Canadian Elevator Contractors Association Maintenance Control Program

Escalator & Moving Walk Devices

A Plan and Procedure Document to Maintain Equipment in Compliance with 8.6

www.ceca-acea.org

Table of Contents
Purpose, Safety Message and Other Notes	4
1	Purpose	4
2	Safety Message	4
3	Appendix A: Disclaimer	4
4	Template for Maintenance Program Tasks and Category Tests	5
Template Task Requirement Number and Name	6
        CAT X- 8.6.X  Test Name	6
5	MCP Updates	6
6	Instructions for Locating a Remote ONSITE MCP:	6
7	Wiring Diagrams	7
8	Record Retention	7
9	Call-backs and Trouble Calls	7
10    Safe Operation and Device Maintenance	7
11    Repairs	8
12    Procedures not prescribed in A17.2	8
Escalator Maintenance Procedures	9
8.6.8    Maintenance and Testing of Escalators and Moving Walks	9
8.6.8.1 Handrails	9
8.6.8.2 Step-to-Skirt Clearance	9
8.6.8.3 Step/Skirt Performance Index	10
8.6.8.4 Combplates	11
8.6.8.5 Escalator Skirt Panels and Skirt Obstruction Devices	11
8.6.8.6 Steps	11
8.6.8.7 Rollers, Tracks, and Chains	12
8.6.8.8 Signs	12
8.6.8.9 Guards at Ceiling Intersections	12
8.6.8.10 Antislide Devices	12
8.6.8.11 Handrail Guards	13
8.6.8.12 Brakes	13
8.6.8.13 Cleaning	13
8.6.8.14 Entrance and Egress Ends	13
Category 1 - Periodic Test Procedures Escalators	14
8.6.8.15 Periodic Test Requirements-Category 1	14
8.6.8.15.1 Machine Space	14
8.6.8.15.2 Stop Switch	14
8.6.8.15.3 Controller and Wiring	15
8.6.8.15.4 Drive Machine and Brake	15
8.6.8.15.5 Speed Governor	16
8.6.8.15.6 Broken Drive-Chain Device	17
8.6.8.15.7 Reversal Stop Switch	17
8.6.8.15.8 Broken Step-Chain or Treadway Device	17
8.6.8.15.9 Step Upthrust Device	18
8.6.8.15.10 Missing Step or Pallet Device	18
8.6.8.15.11 Step or Pallet Level Device	18
8.6.8.15.12 Steps, Pallet, Step or Pallet Chain, and Trusses	19
8.6.8.15.13 Handrail Safety Systems	19
8.6.8.15.14 Heaters and Outdoor Units	20
8.6.8.15.15 Permissible Stretch in Escalator Chains	20
8.6.8.15.16 Disconnected Motor Safety Device	21
8.6.8.15.17 Response to Smoke Detectors (6.1.6.8 or 6.2.6.7) (Items 8.15 and 10.15)	21
8.6.8.15.18 Comb-Step or Comb-Pallet Impact Device	21
8.6.8.15.19 Step/Skirt Performance Index	22
8.6.8.15.20 Clearance Between Step and Skirt (Loaded Gap)	23
8.6.8.15.21 Inspection Controls	23
8.6.8.15.22 Step Lateral Displacement Device (6.1.6.3.14)	24
8.6.8.15.23 Seismic Risk Zones 2 or Greater	24
Moving Walk Maintenance Procedures	25
8.6.9 Maintenance of Moving Walks	25
8.6.9.1 Handrails.	25
8.6.8.2 Step-to-Skirt Clearance	25
8.6.9.2 Combplates	25
8.6.9.3 Pallets	26
8.6.9.2 Combplates	26
8.6.9.5 Belt-Type Treadway	26
8.6.9.6 Signs	27
8.6.9.6 Signs	27
8.6.9.8 Antislide Devices	27
8.6.9.9 Handrail Guards	27
8.6.9.10 Brakes	27
8.6.9.11 Cleaning	28
8.6.9.11 Cleaning	28
8.6.9.13 Clearances	28
Category 1 - Periodic Test Procedures Moving Walks	29
8.6.8.15 Periodic Test Requirements-Category 1	29
8.6.8.15.1 Machine Space	29
8.6.8.15.2 Stop Switch	29
8.6.8.15.3 Controller and Wiring	29
8.6.8.15.2 Stop Switch	30
8.6.8.15.5 Speed Governor	31
8.6.8.15.6 Broken Drive-Chain Device	32
8.6.8.15.8 Broken Step-Chain or Treadway Device	32
8.6.8.15.9 Step Upthrust Device	33
8.6.8.15.10 Missing Step or Pallet Device	33
8.6.8.15.11 Step or Pallet Level Device	33
8.6.8.15.12 Steps, Pallet, Step or Pallet Chain, and Trusses	34
8.6.8.15.13 Handrail Safety Systems	34
8.6.8.15.11 Step or Pallet Level Device	35
8.6.8.15.14 Heaters and Outdoor Units	35
8.6.8.15.15 Permissible Stretch in Escalator Chains	35
8.6.8.15.16 Disconnected Motor Safety Device	36
8.6.8.15.17 Response to Smoke Detectors (6.1.6.8 or 6.2.6.7) (Items 8.15 and 10.15)	36
8.6.8.15.18 Comb-Step or Comb-Pallet Impact Device	36
8.6.8.15.21 Inspection Controls	37
8.6.8.15.23 Seismic Risk Zones 2 or Greater	37
Escalator & Moving Walks Start-up	38

Purpose, Safety Message and Other Notes

1	Purpose

This Maintenance Control Program (MCP) Document shall be constructed with the intent to provide service personnel with the required information to maintain, adjust, repair or replace any component of the prescribed elevator system for which it has been designed. It shall include but not limited to safety procedures to guide the service personnel in performing these tasks such as shutdowns, lockout, securing equipment or counterbalancing.

This document is to be maintained on the physical site of the elevating device for which it has been constructed and shall be made available to registered service personnel, Authorities Having Jurisdiction, Owners and their representatives.

The MCP Document is to include information specific to all components of the elevating system including maintenance and cleaning procedures, troubleshooting procedures, repair and replacement procedures and information pertaining to A17.1/ B44 Code and Code Adoption Document (CAD) required parameters and frequencies.

When constructing this document all attempts shall be made to legally obtain Original Equipment Manufacturer (OEM) maintenance and service manuals. Where OEM manuals are unavailable the constructor of this MCP Document shall include its own best practices procedures based on past history and experiences. These shall be documented and included as part of this MCP.

2	Safety Message

The intent of the Maintenance Control Program is to provide Owners and service personnel with information to keep elevating equipment reliable and prescribe maintenance and repair procedures that will maximize the safety for service and maintenance mechanics and the traveling public, when interacting with the device.

With ever changing technology involving newer elevating devices and thousands of older elevating devices still in existence it has become increasingly difficult for service personnel to keep up with all the different types of equipment, technology and corresponding code requirements. This document is intended to provide elevating device mechanics with specific information about the elevating device equipment, while continuously being revised to ensure all information enclosed is current. The MCP document acts as a device to ensure elevating device mechanics have pertinent information to perform tasks safely, effectively and most importantly correctly to keep all concerned as safe as possible.

3	Appendix A: Disclaimer 

By downloading from CECA’s website any or all of CECA’s MCP Guidelines and Procedures I acknowledge, understand and accept the Terms, Conditions and Limitations set out below regarding CECA’s Notice and Disclaimer of Liability Concerning its MCP Guidelines and Procedures for Elevators (Hydraulic and Electric) and for Escalators, Moving Walks and Dumbwaiters.  

CECA’s Terms, Conditions and Limitations of Use:
CECA’s MCP Task Group, comprised of Member volunteers from the enforcement, engineering, supplier, manufacturer and contractor sectors, has achieved consensus on “Guidelines and Recommended Practices” for the safe institution and use of a Written Maintenance Control Program for elevating devices in compliance with Section 8.6 of the ASME 17.1/CSA B44 Code.  While CECA’s Task Group has facilitated Model or Guideline MCPs and a compliance protocol, it has not independently tested, evaluated or verified the accuracy of any information or the soundness of any procedures referenced in its Guidelines and Recommended Practices.  TSSA involvement in the Task Group has been in a consulting capacity only.  CECA cannot and does not warrant that the Guidelines or MCPs developed are or will be deemed compliant with TSSA inspection and enforcement mandates.
CECA disclaims liability to any Member or end-user person, partnership or corporation for any legal or regulatory actions, charges, directives or compliance orders, and for any bodily injury, personal injury, property or other damage of any nature or kind whatsoever, whether special, direct, indirect, consequential or compensatory, directly or indirectly resulting from the publication, use of, or reliance on CECA’s MCP or its Guidelines and Recommended Practices.  CECA does not guarantee or warrant the accuracy or completeness of any of the information compiled or published herein. CECA does not guarantee or warrant that its Maintenance Control Program or its Guidelines and Recommended Practices meet TSSA requirements.
In making this document available to its Members, in consideration for dues and membership fees paid by Members to CECA, CECA is not undertaking to render professional or other services of or on behalf of any person or entity, and is not entering into any contract for professional or other consulting service.  CECA is not by the provision of its MCP or its Guidelines and Recommended Practices undertaking to perform or alleviate the performance of any duty owed by any person or entity to any other person or corporation.  Anyone using CECA’s Guideline MCP or its Guidelines and Recommended Practices does so based on his or her own independent judgment and at his or her own risk.  Members and users undertake to, as may be appropriate in the individual circumstances of a particular elevating device, job, contract and owner, seek the advice of a competent consultant or professional in determining the accuracy, compliance, suitability and completeness of the MCP document. Modifications made to the CECA MCP document in order to render it suitable for any particular job are made at the risk of the owner of that job and the contractor or consultant responsible for the modifications.
Users of CECA Guidelines and Recommended Practices should consult applicable federal and provincial laws and regulations relating to MCPs for elevators and escalators in Canada.  CECA does not, by the publication of its Guidelines and Recommended Practices support any action or course that is not in compliance with applicable laws.  Its publications may not be construed as doing so.
The CECA MCP Guidelines and Procedures contain our CECA logo. In respect to the work CECA has put forth in developing this, we ask that the logo remain on all documents.

4	Template for Maintenance Program Tasks and Category Tests

The following legend and template is use in this document to record maintenance tasks:
 
Legend:	ESC – ESCALATORS	MW – MOVING WALKS	

Template for Maintenance Program Task
Task Name	Template Task Requirement Number and Name	Scope:	ESC	
Notes	Special instruction	
1		Program Procedures	
1.1		Procedure and sub-requirements	
2		Frequency	
2.1		Recommended or mandated frequency of the task	
3		A17.2 or Other Reference Requirements	
3.1		Relevant publications available to elevator personnel and AHJ’s to evaluate requirements	

Template for Category Testing
Test	CAT X- 8.6.X Test Name	Scope:	ESC	
Notes	Special instruction	
1		Test Procedure	
1.1		See Item XX in A17.2, or script testing requirements	

5	MCP Updates 

A17.1/B44 requirement 8.6.1.2.1(b) requires that the MCP document shall be updated accordingly where a maintenance task or procedure has been updated, or examinations or tests have been updated or revised to the extent that the MCP is reflective of the equipment at the specified location.

6	Instructions for Locating a Remote ONSITE MCP:

8.6.1.2.1(d) where the MCP is maintained remotely from the machine room, machinery space, control room, or control space (see 8.11.1.8) instructions for on-site locating or viewing the MCP either in hard copy or in electronic format shall be posted on the controller or at the means necessary for test (see 2.7.6.4). The instructions shall be permanently legible with characters a minimum of 3mm (0.125in) in height. 

INSTRUCTION FOR LOCATING THE MAINTENANCE CONTROL PROGRAM	
The Maintenance Control Program for this elevating device, 
as required by A17.1/B44 Section 8.6 
is being maintained in a REMOTE ON SITE LOCATION.
The MCP for this device can be found ON SITE at

Specify location:

7	Wiring Diagrams

Elevating Device owners must be aware of and make the following available as required by 8.6 of A17.1/B44:
8.6.1.2.2 On-Site Documentation 
The following documents specified in 8.6.1.2.2 (a), (b), and (c) shall be written and permanently kept on-site in the machine room, machinery space, control room, control space, or in the means necessary for test (2.7.6.4) in hard copy for each unit for elevator personnel. 
(a) Up-to-date wiring diagrams detailing circuits of all electrical protective devices (see 2.26.2) and critical operating circuits (see 2.26.3). 
8	Record Retention

The maintenance and testing records associated with this device are required to be retained for a period of not less than 5 years.

9	Call-backs and Trouble Calls

Call-backs and/or trouble call logs shall be maintained for a period of 1 year, and must be made available to the AHJ upon request. These logs are not required to be maintained at this site.

8.6.1.4.2 includes requirements for: Instructions on how to report any need for corrective action (trouble calls) to the responsible party shall be posted on the controller or at the means necessary for test (see 2.7.6.4). The instructions shall be permanently legible with characters a minimum of 3mm (0.125 in.) in height. 
REPORTING OF TROUBLE CALLS	
This Elevating Device is being Maintained by  
ABC Elevator 
Please Report any problems to
555-555-5555  

For Emergencies call 911	

10	Safe Operation and Device Maintenance

The following A17.1/B44 requirements shall be observed at all times:
8.6.1.6 General Maintenance Methods and Procedures
8.6.1.6.1 Making Safety Devices Inoperative or Ineffective. 
No person shall at any time make inoperative or ineffective any device on which safety of users is dependent, including any electrical protective device, except where necessary during tests, inspections (see 8.10 and 8.11), maintenance, repair, and replacement, provided that the installation is first removed from normal operation. Such devices shall be restored to their normal operating condition in conformity with the applicable requirements prior to returning the equipment to service (see 2.26.7 and 8.6.1.6).
11	Repairs

Repairs shall be made with parts of at least equivalent material, strength, and design (see A17.1/B44 section 8.6.3.1). Replacements shall be made with parts of at least equivalent material, strength, and design. A record of Repairs and/or replacements shall be recorded and kept on site for the following repair / replacement activities:
(1)	Repairs (8.6.2.1- 8.6.2.5) including repairs of components and devices listed in 8.6.4, 8.6.5, 8.6.6, 8.6.7, 8.6.8, 8.6.9, and 8.6.10. 
(2)	Replacements (8.6.3.1 - 8.6.3.11 except 8.6.3.7 and 8.6.3.10) including replacements of components and devices listed in 8.6.4, 8.6.5, 8.6.6, 8.6.7, 8.6.8, 8.6.9, and 8.6.10. 
12	Procedures not prescribed in A17.2

12.1	Unique procedures for the maintenance, inspection and test of; SIL rated devices, unique equipment, and conformance to Code Compliance Documents obtained for an A17.7 certificate shall be provided in the MCP as required.

Escalator Maintenance Procedures

Task Name	8.6.8 Maintenance and Testing of Escalators and Moving Walks	Scope:	ESC	
Notes		
1		Program Procedures: 	
1.1		The maintenance of escalators shall conform to 8.6.1 through 8.6.3 and 8.6.8 of the Code Adoption Document (CAD)	
1.2		Not later than 3 years after the adoption of the code in part 3.1 of the CAD, escalators shall be brought into conformance with the requirements of 8.6.8.2 and 8.6.8.3.3.	
1.2.1		Until that time, escalators installed to CSA B44-75s3 (1982) or earlier, and for escalators where the skirt panels are not made of low-friction material or have not been permanently treated with a friction-reducing material, a friction reducing agent shall be applied monthly by authorized personnel. [241/10]	
1.2.2		Skirt panels brought into conformance with 8.6.8.2 and 8.6.8.3.3 shall be maintained to these requirements and the application of friction-reducing agents will no longer be permitted.	
2		Frequency 	
2.1		Mandated interval 3 months maximum.	
2.2		Application of friction reducing agent to be performed monthly (if required)	
2.3		Category 1 Test to be done annually	
3		A17.2 Requirements	
3.1		Part 7 Escalator- External & Part 8 Escalator- Internal	

Task Name	8.6.8.1 Handrails	Scope:	ESC	
Notes		
1		Program Procedures: 	
1.1		Mark the handrail and monitor it through on complete cycle.	
1.2		Observe the condition of the handrail	
1.2.1		Must be free of cuts, cracks and gouges or anything else which may cause a hazard.	
1.2.2		Any rust or rubber build-up on the guide may be cause for additional inspection.	
1.2.3		Note finger guards are present and in good condition and properly to prevent fingers from being drawn into the newel.	
1.2.4		There are many types of guards in use, ensure they are in good condition and operate as designed.	
1.3		Ride the escalator its entire length holding the handrails on both sides.	
1.3.1		The handrails should move smoothly without jerking and at substantially the same speed as the steps.	
1.3.2		Ensure it does not stall by griping the handrail tightly.	
1.3.3		Observe any noises which may indicate wear.	
1.3.4		Check for loose conditions and horizontal clearances which may indicate guide or interior wear of the handrail.	
2		Frequency 	
2.1		Mandated interval 3 months 	
3		A17.2 Requirements 	
3.1		Item: 7.3.1	

Task Name	8.6.8.2 Step-to-Skirt Clearance	Scope:	ESC	
Notes		
1		Program Procedures: 	
1.1		Verify the skirt panels are smooth.	
1.2		Verify the clearance between skirt panels and steps using a thickness gauge or by laying a small rule on the step edge.	
1.2.1		Several steps should be checked through their entire travel.	
1.2.2		Test the panel at several places during the run and especially near the transition entrance and exit.	
1.2.3		If examination of the panels raises a question about the friction of the skirt panels, the manufacturer’s recommendation should be requested and compared to the treatment schedule if available.	
1.2.4		If skirts are treated, examine the steps to verify that friction- reducing treatment has not been applied on them.	
1.2.5		Skirt deflectors, when provided, shall be checked to ensure that all fasteners are flush and tamper resistant, that rigid elements are smooth, and that exposed surfaces have their low friction material treatment intact and the dimensional, strength, and deflection requirements are met.	
1.3		Clearances shall be maintained as required by code in effect at installation	
1.3.1		The clearance on either side of the steps and between the steps and the adjacent skirt guard shall not exceed 4 mm (0.16 in.) and the sum of the clearances on both sides shall not exceed 7 mm (0.28 in.).	
1.3.2		CSA B44 Requirements	
1.3.2.1		B44-1960 through B44S3-1982 not more than 4.8 mm (0.1875 in.) on each side. Sum of both sides not more than 6.4 mm (0.25 in.).	
1.3.2.2		B44-1985 through B44S2-1998-Not more than 5 mm (0.197 in.) on each side. Sum of both sides not more than 6 mm (0.236 in.).	
1.3.2.3		For equipment installed under CSA B44-00 not more than 4 mm (0.157 in.) on each side. Sum of both sides not more than 7 mm (0.28 in.)	
1.3.2.4		For equipment installed under CSA B44-00 Update 1 and later editions-clearance (loaded gap) shall be not more than 5 mm(0.2 in.) when 110 N (25 lbf) force is laterally applied from the step to the adjacent skirt panel. See 6.1.3.3.5.	
2		Frequency 	
2.1		Mandated interval 3 months	
2.2		2.3.2.4 loaded gap testing is to be done annually unless normal checks indicate problems.	
3		A17.2 Requirements 	
3.1		Item: 7.17.1	

Task Name	8.6.8.3 Step/Skirt Performance Index	Scope:	ESC	
Notes		
1		Program Procedures:	
1.1		Perform maintenance task 8.6.8.2 Step-to-Skirt Clearance	
1.2		When required due to conditions observed or as required by code verify the Step/Skirt Performance Index.	
1.3		The step/skirt performance index, when the escalator is subjected to the test specified in 8.6.8.15.19, shall be the maximum value of the recorded instantaneous step/skirt index ey/(ey + 1), where 	
2		(SI Units)
e =2.7183
y =-3.77 + 2.37 (_) + 0.37 (Lg)
µ = the sliding coefficient of friction of a polycarbonate test specimen on the skirt panel at the measurement point calculated when subjected to a 110 N normal load. The coefficient of friction shall be measured without addition of any field-applied lubricant.
Lg = the clearance between the step and the adjacent skirt panel when 110 N is applied from the step to skirt panel, mm
The applied load shall not deviate from 110 N by more than ±11 N. The load shall be distributed over a round or square area not less than 1 940 mm2 and not more than 3 870 mm2.	(Imperial Units)
e =2.7183
y =-3.77 + 2.37 (_) + 9.3 (Lg)
µ = the sliding coefficient of friction of a polycarbonate test specimen on the skirt panel at the measurement point calculated when subjected to a 25 lbf normal load. The coefficient of friction shall be measured without addition of any field-applied lubricant.
Lg = the clearance between the step and the adjacent skirt panel when 25 lbf is applied from the step to skirt panel, in.
The applied load shall not deviate from 25 lbf by more than ±2.5 lbf. The load shall be distributed over a round or square area not less than 3 in.2 and not more than 6 in.2	
2.1		The step/skirt performance index polycarbonate test specimen shall conform to the following specifications:	
2.1.1		Material: Polycarbonate without fillers	
2.1.2		Color: Natural, no pigments	
2.1.3		Finish: Glossy (roughness less than 0.8m (32in.))	
2.1.4		Area in contact with skirt panel: 2 900 ± 325 mm2 (4.5 ± 0.5 in.2) and at least 0.8 mm (0.03 in.) thick	
2.1.5		Specification: GE Lexan 100 series or equivalent polycarbonate	
2.2		The escalator step/skirt performance index shall be one of the following, whichever is applicable:	
2.2.1		≤ 0.15	
2.2.2		≤ 0.25 for escalators installed under ASME A17.1a-2002/CSA B44-00 Update 1 and later editions and when a skirt deflector device complying with the requirements of 6.1.3.3.7 is provided	
2.2.3		≤ 0.4 for escalators installed under ASME A17.1-2000/CSA B44-00 and earlier editions and a skirt deflector device is provided	
3		Frequency 	
3.1		Mandated interval 12 months	
4		A17.2 Requirements 	
4.1		Item: 7.17.1	

Task Name	8.6.8.4 Combplates	Scope:	ESC	
Notes		
1		Program Procedures:	
1.1		Inspect the comb for missing teeth and proper mesh with each steps tread.	
1.2		Verify proper mesh with step treads.	
1.2.1		Teeth should mesh and the leading edge should be below the tread surface.	
1.2.2		Any comb segment with missing teeth should be replaced.	
1.3		For escalators installed under A17.1c–1986 and later editions, the comb surfaces must contrast visibly by color, pattern, or texture	
2		Frequency 	
2.1		Mandated interval 3 months 	
3		A17.2 Requirements 	
3.1		Item: 7.7.1	

Task Name	8.6.8.5 Escalator Skirt Panels and Skirt Obstruction Devices	Scope:	ESC	
Notes		
1		Program Procedures:	
1.1		Test the skirt obstruction device	
1.2		Escalators installed under A17.1–1971 and later editions and A17.3	
1.2.1		Manually trip the skirt obstruction device switches on each side of steps at each landing while the escalator is running.	
1.2.2		This can be done by placing an object such as a wooden stick between the steps and the skirt as the step moves by the switch.
A soft material should always be used to prevent damage to the equipment.
Kicking the panel does not verify proper operation of the skirt switch.	
1.3		Escalators installed under A17.1b–1983 and later editions	
1.3.1		The maximum stopping distance should not exceed the distance from the location of the switch to the combplate for any load up to the rated load.	
1.4		Escalators installed under A17.1–1971 through 1978 editions.	
1.4.1		Required skirt obstruction devices only at the lower landing.	
1.5		Prior to A17.1–1971 skirt obstruction devices were not required but were sometimes installed.
If they are installed, they should be tested.	
2		Frequency 	
2.1		Mandated interval 3 months 	
3		A17.2 Requirements 	
3.1		Item: 7.11.1	

Task Name	8.6.8.6 Steps	Scope:	ESC	
Notes		
1		Program Procedures:	
1.1		Mark one of the steps with chalk, then run the escalator through one complete revolution. Check that each step is present, clean, free of debris, and that the step treads and risers are in good condition.	
1.2		Check at least every tenth step, by riding on it, to verify that the following requirements are met:	
1.2.1		There is no excessive movement or play in the direction of travel, at right angles to the direction of travel and vertically. While standing on the step, a lateral shift of weight should not cause the step to strike the skirt panels.	
1.2.2		Escalators installed prior to A17.1–1971	
1.2.2.1		Verify that the clearance between step treads on the horizontal run is not more than 5⁄32 in. (4 mm	
1.2.3		Escalators installed under A17.1–1971 and later editions,	
1.2.3.1		Cleated step risers are required and they must mesh with the slots of adjacent step treads.	
1.2.4		Escalators installed under A17.1–2000/B44-00 and later editions.	
1.2.4.1		Check that the clearance between the steps on the horizontal run does not exceed 0.25 in. (6 mm).	
1.2.5		Use a level to check if the steps are horizontal.	
1.2.6		The tread surface should be slotted in the direction parallel to the travel so that they mesh with the combplate teeth.	
1.2.6.1		Verify that a cleat is formed adjacent to the skirt panel on each side of the step.	
1.2.7		Check risers, cleats, and step tread surfaces. Special consideration should be given to excessive clearance and sharp edges.	
1.2.8		While standing on the step tread, verify that it provides a secure foothold.	
1.2.9		A jerking motion on the steps and excessive noise in the machinery space indicates that the drive and support system should be examined to discover the source or cause.	
2		Frequency 	
2.1		Mandated interval 3 months 	
3		A17.2 Requirements 	
3.1		Item: 7.9.1	

Task Name	8.6.8.7 Rollers, Tracks, and Chains	Scope:	ESC	
Notes 		
1		Program Procedures:	
1.1		Rollers, tracks, and chains shall be examined, repaired, or replaced when necessary to ensure required clearances.	
2		Frequency 	
2.1		Mandated interval 3 months 	
3		A17.2 Requirements 	
3.1		Section 8.12.1	

Task Name	8.6.8.8 Signs	Scope:	ESC	
Notes		
1		Program Procedures:	
1.1		Escalators installed under A17.1–1981 and later editions and escalators that are required to comply with A17.3	
1.1.1		Verify that the required caution signs are located at both landings readily visible to boarding passengers.	
1.2		Escalators installed under A17.1–1993 and later editions	
1.2.1		Verify that any additional signs are located at least 10 ft (3.05 m) horizontally from the end of the newels and that they do not impede traffic or otherwise cause persons to stop.	
2		Frequency 	
2.1		Mandated interval 3 months 	
3		A17.2 Requirements 	
3.1		Item: 7.6.1	

Task Name	8.6.8.9 Guards at Ceiling Intersections	Scope:	ESC	
Notes		
1		Program Procedures:	
1.1		Escalators installed under A17.1–1978 and later editions	
1.1.1		Ceiling intersection guards are required where the clearance of the exterior deck and the ceiling or soffit is 12 in. (305 mm) or less or where the projected intersection of the exterior deck and ceiling or soffit is 24 in. (610 mm) or less from the adjacent handrail centerline.	
1.1.2		This requirement was restricted to high decks for escalators installed under A17.1a–1982 and later editions and A17.3 (see Fig. 7.16.1).	
1.2		Escalators installed under A17.1a–1982 and later editions and A17.3.	
1.2.1		On low decks where the centerline of the handrail is 14 in. (356 mm) or less from the ceiling or soffit, guards are also required.	
1.3		Inspect the guards for damage and secure attachment.	
2		Frequency 	
2.1		Mandated interval 3 months 	
3		A17.2 Requirements 	
3.1		Item: 7.16.1	

Task Name	8.6.8.10 Antislide Devices	Scope:	ESC	
Notes		
1		Program Procedures:	
1.1		Escalators installed under the A17.1c–1986 and later editions.	
1.1.1		For low deck check to see that deck barricades are firmly in place and in good condition at each end when the outer deck width exceeds 5 in. (127 mm). The barrier must extend to 4 in. (102 mm) below the handrail top.	
1.2		Escalators installed to A17.1b–1995 and later editions. 	
1.2.1		If the escalator is not located at the edge of a floor surface, check that the barricade(s) is in place, properly located, and firmly secured on the outer deck.	
1.3		Escalators installed under A17.1–1981 and later editions and A17.3.	
1.3.1		On high deck check that antislide devices, where required, are in place and secure.	
2		Frequency 	
2.1		Mandated interval 3 months 	
3		A17.2 Requirements 	
3.1		Item: 7.8.1	

Task Name	8.6.8.11 Handrail Guards	Scope:	ESC	
Notes		
1		Program Procedures:	
1.1.1		See 8.6.8.1 Requirements	
2		Frequency 	
2.1		Mandated interval 3 months 	
3		A17.2 Requirements 	
3.1		Item: 7.3.1	

Task Name	8.6.8.12 Brakes	Scope:	ESC	
Notes		
1		Program Procedures:	
1.1		Brakes shall be maintained in compliance with the applicable requirements of 8.6.4.6, and adjusted to the torque shown on the data plate, where provided.	
1.2		The escalator stopping distance shall be tested during each scheduled maintenance visit and the results of the test shall be recorded in a maintenance log book.	
2		Frequency 	
2.1		Mandated interval 3 months 	
3		A17.2 Requirements 	
3.1		Item: 8.4.1 & DR247-11	

Task Name	8.6.8.13 Cleaning	Scope:	ESC	
Notes		
1		Program Procedures:	
1.1		The interiors of escalators and their components shall be cleaned to prevent an accumulation of oil, grease, lint, dirt, and refuse. The frequency of the cleaning will depend on service and conditions, but an examination to determine if cleaning is necessary shall be required at least once a year.	
2		Frequency 	
2.1		Recommended as needed or minimum interval 12 months 	
3		A17.2 Requirements 	
3.1		Item: 8.1.1 & DR247-11	

Task Name	8.6.8.14 Entrance and Egress Ends	Scope:	ESC	
Notes		
1		Program Procedures:	
1.1		The floor surfaces adjacent to the landing plates must be continuous with the top of the landing plate, with no abrupt changes in elevation of more than 1⁄4 in. (6.4 mm). Access to an egress from the escalator should be free of obstacles and tripping hazards. Check that the pit covers are present and in good condition.	
1.2		Escalators installed under the A17.1a–1988 and later editions and A17.3.	
1.2.1		A safety zone should be maintained free of obstacles. These Code dimensions are minimums and traffic patterns may require larger distances.	
1.3		While standing on the unit, verify that the landing and combplates provide a secure foothold and outdoor units should provide a secure foothold when wet.	
2		Frequency 	
2.1		Recommended as needed or minimum interval 12 months 	
3		A17.2 Requirements 	
3.1		Item: 7.4.1	
Category 1 - Periodic Test Procedures Escalators

Task Name	8.6.8.15 Periodic Test Requirements-Category 1	Scope:	ESC	
Notes		
1		Program Procedures:	
1.1			
2		Frequency 	
2.1		For test frequency, see 8.11.1.3.	
3		A17.2 Requirements 	
3.1		Section 7 Escalator External & Section 8 Escalator Internal	

Task Name	8.6.8.15.1 Machine Space	Scope:	ESC	
Notes		
1		Program Procedures:	
1.1		Determine that the means of access is securely fastened in place	
1.1.1		A17.3b–1995 requires that access plates be fastened in place when no more than 30 lbf (311 N) effort is required to open them.	
1.2		If a door is used, verify that it is kept locked and the key is available only to authorized personnel.	
1.3		Check the lighting and test the receptacle.	
1.4		Escalators installed under A17.1–1981 and later editions	
1.4.1		In remote machine space, check that lighting at floor level is at least 10 fc (108 lx).	
1.5		Verify that the space is clean of dirt and rubbish and free of oil and combustibles.	
1.6		Items unrelated to escalator maintenance or operation shall not be stored in machine space.	
1.7		No lubricant or solvent with a flashpoint less than 110°F (43°C) shall be stored in such space.	
1.8		Water should not have accumulated on the floor of the space.	
1.9		Verify that jumpers are not stored in the machine space, hoistway, or pit.	
1.10		Escalators installed under A17.1–1978 to A17.1a–2005.	
1.10.1		Verify that the two fluorescent demarcation lamps are clean, green, and in good condition at each landing.	
1.11		Verify that no penetrations exist through the sides and undersides of the machinery space and truss that compromises its fire resistance or allows physical contact with moving parts.	
1.12		Escalators installed under A17.1–2000/B44-00 and later editions.	
1.12.1		Check that a fixed guard is in place to protect against accidental contact with the moving steps.	
2		Frequency 	
2.1		Mandated interval 12 months	
3		A17.2 Requirements 	
3.1		Item: 8.1.2	

Task Name	8.6.8.15.2 Stop Switch	Scope:	ESC	
Notes		
1		Program Procedures:	
1.1		Test the operation of machine space stop switch(es) by placing them in the stop position. Then, make sure that everyone is clear and attempt to start the escalator with the key switch.	
1.2		Escalators installed under A17.1–2000/B44-00 and later editions	
1.2.1		Check the operation of the inspection control device from each end.	
1.2.2		The device only permits movement by a constant pressure means, and clearly indicates the direction of travel.	
1.3		If a plug in control station is used, verify that it is stored in the upper landing machinery space.	
1.3.1		Have the unit operated with the inspection control device.	
1.3.2		Check that the device only permits movement by a constant pressure means and clearly indicates the direction of travel.	
2		Frequency 	
2.1		Mandated interval 12 months.	
3		A17.2 Requirements 	
3.1		Item: 8.2.2	

Task Name	8.6.8.15.3 Controller and Wiring	Scope:	ESC	
Notes		
1		Program Procedures:	
1.1		Examine the controller visually to verify that it is clean and that the switches, contactors, and relays and their electrical connections are in good condition.	
1.2		Check that the fuses are in place, of the proper type and rating, and have not been jumped or otherwise tampered with.	
1.3		Check for jumper wires or other changes which may indicate that safety devices have been defeated or altered.	
1.4		Visually examine wiring for damage and all components for evidence of overheating.	
1.5		Operate the main line circuit breakers or disconnect switch to verify that all power is removed from the drive machine.	
1.6		Verify that all electrical components are enclosed to prevent accidental contact.	
1.7		If heaters are present (see Item 7.18.2), verify that they are operational.	
1.8		Escalators installed under A17.1–1965 through A17.1a–1985.	
1.8.1		Verify that the circuit breakers will not be automatically opened by the fire alarm.	
2		Frequency 	
2.1		Mandated interval 12 months.	
3		A17.2 Requirements 	
3.1		Item: 8.3.2	

Task Name	8.6.8.15.4 Drive Machine and Brake	Scope:	ESC	
Notes		
1		Program Procedures:	
1.1		Verify that the driving machine is properly secured, lubricated, clean, and in good condition.	
1.2		Visually check the driving-machine fastenings and bearing caps to verify that they are tight.	
1.3		Verify that the driving machine is connected to the main drive shaft by toothed gearing, a mechanical coupling, or a chain and that it is in good condition.	
1.4		Look for evidence of any excessive backlash in the driving gears or chains. If a chain is used to connect the driving machine to a sprocket on the main drive shaft, visually examine the chain and sprockets for wear, excessive slack, and proper lubrication.	
1.5		Lack of lubrication for a chain may be indicated by rouge (red rust deposits) on the side plates of the links.	
1.6		Escalators installed under A17.1a–1988 and later editions.	
1.6.1		Verify that cast iron links are not used.	
1.6.2		If the links appear to be cast iron, have a small hole drilled (in a low stress area) and observe the drill cuttings.	
1.6.3		If the cuttings are a fine powder, cast iron is indicated.	
1.6.4		If the cuttings are shavings, then the links are not cast iron.	
1.7		Inspect any drive belts and sheaves for damage and wear.	
1.8		Check for proper belt tension and reasonable equality of tension in a set of belts.	
1.9		Visually examine the components for signs of overheating.	
1.10		Verify that an electrically released brake is present and automatically applied when power is interrupted.	
1.11		Units installed under A17.1–1955 through A17.1a–1957 and A17.1c–1986 and later editions.	
1.11.1		It is to be located on the driving machine.	
1.11.2		Other editions allowed the brake to be on the main drive shaft.	
1.12		Escalators installed under A17.1b–1983 and later editions.	
1.12.1		Verify that the driving-machine brake is located on the gear reducer of main drive shaft if means other than a continuous shaft mechanical coupling or toothed gearing is used to connect the motor to the gear reducer.	
1.13		Escalators installed under A17.1b–1983 and later editions and A17.3.	
1.13.1		The brake may be magnetically applied using a ceramic permanent magnet.	
1.13.2		Prior to this, a mechanically applied brake was required.	
1.14		Visually inspect the condition of the brake pads, drums, and discs.	
1.14.1		Escalators installed to A17.1b-1983 and later editions.	
1.14.1.1		This brake must stop a down-running escalator with a retardation not exceeding 3 ft/s2 (0.91 m/s2).	
1.14.2		Escalators installed to A17.1b–1983 through A17.1–2000.	
1.14.2.1		This was a maximum rate.	
1.14.3		Escalators installed to A17.1a–2002 and later editions.	
1.14.3.1		It is an average rate, but there is an additional restriction on the peak horizontal retardation, which is not intended to be field verified.	
1.14.4		It is not required to measure the actual retardation; the brake torque will provide verification that those requirements are met in addition to other brake requirements.	
1.14.5		Visually inspect all mechanisms for condition and operation.	
1.14.6		Escalators installed under A17.1b–1983 and later editions.	
1.14.6.1		Have a nameplate or data plate that specifies the required brake torque.	
1.14.7		Escalators installed under A17.1a–1988 and later editions.	
		Require that the nameplate or data plate torque be specified as breakaway, the maximum torque required to cause the brake to begin moving, or dynamic, the torque required to keep the shaft moving very slowly at a steady rate.	
1.14.8		The location where the torque is to be measured is required to be clearly indicated.	
1.14.8.1		Escalators installed under A17.1a–1991 and later editions, the nameplate or data plate is required to specify the range of brake torque.	
1.14.9		Escalators installed to A17.1–2000 and later editions.	
1.14.9.1		It must also indicate the minimum distance from the skirt obstruction device to the combplate.	
1.14.10		Escalators installed to A17.1-2004 and later editions.	
1.14.10.1		It must also indicate the type of brake (fixed or variable). While the range of brake torque is still required to be indicated for fixed torque brakes, for variable torque brakes the minimum brake torque for a loaded escalator and minimum stopping distance for an unloaded escalator must be indicated.	
1.14.10.2		Have the torque tested to verify that the torque complies and check the minimum stopping distance for variable torque brakes. Note that temperature can affect the brake torque.	
1.14.11		The torque wrench should have a current calibration certificate traceable to the National Bureau of Standards and have a range of at least 25% higher than the required torque.	
1.15		If the driving-machine brake is separated from the main drive shaft by a chain, check for the presence of a second brake that is required on the main drive shaft.	
1.15.1		The requirements for this additional brake on the main drive shaft are:	
1.15.1.1		A17.1–1960 through A17.1a–1982 required that it be electrically released if an electrically released brake was not provided on the driving machine.	
1.15.1.2		A17.1–1955 through A17.1a–1982 required that it be mechanically applied, while A17.1b–1983 and later editions required that it be either mechanically or magnetically (ceramic permanent magnet) applied.	
1.15.1.3		A17.1b–1983 through A17.1d–2000 required that it stop a down-running escalator with rated load at a rate not to exceed 3 ft/sec2 (0.91 m/s2).	
1.15.1.4		A17.3 requires the brake to be mechanically or magnetically (permanent magnet) applied and capable of stopping a down-running escalator with rated load.	
2		Frequency 	
2.1		Mandated interval 12 months.	
3		A17.2 Requirements 	
3.1		Item: 8.4.2	

Task Name	8.6.8.15.5 Speed Governor	Scope:	ESC	
Notes		
1		Program Procedures:	
1.1		When a speed governor is required, test it to verify that it is functioning.	
1.2		Manually operate the switch or use any testing mechanisms (such as flywheel weights) that may be provided.	
1.3		The flyballs and all operating mechanisms must be present and in good operating condition. When the switch is opened, it should interrupt power to the driving machine.	
1.4		Escalators installed under A17.1–1990 and later editions.	
1.4.1		Verify that the escalator cannot be started by the starting switch until the device is manually reset.	
1.4.2		Units installed under A17.1b–1995 and later editions.	
1.4.2.1		When a manual reset is required turn the power off and then back on, and then try the start switch to check that the device will not reset.	
1.4.3		Also, some indication that the device has been activated needs to be provided.	
2		Frequency 	
2.1		Mandated interval 12 months.	
3		A17.2 Requirements 	
3.1		Item: 8.3.2	

Task Name	8.6.8.15.6 Broken Drive-Chain Device	Scope:	ESC	
Notes		
1		Program Procedures:	
1.1		If the driving machine is connected to the main drive shaft by a chain, check the broken drive chain device to verify that it will apply the main shaft brake and stop the drive machine if the drive chain parts.	
1.2		All parts of the device should be in good condition and show freedom to move. Have the switch manually operated and verify that it will open the drive motor circuit.	
1.3		Common devices include a block that is held in tension by the drive chain that activates the switch when tension is lost, or a plate that depresses a switch when the drive chain strikes it.	
1.4		Escalators installed under A17.1–1990 and later editions.	
1.4.1		Verify that the escalator cannot be started by the starting switch until the device is manually reset.	
1.5		Units installed under A17.1b–1995 and later editions.	
1.5.1		When a manual reset is required for, turn the power off and then back on, and then try the start switch to check that the device will not reset.	
1.5.2		Also, some indication that the device has been activated needs to be provided.	
1.6		If the drive motor is attached to a gear reducer by means other than a continuous shaft, coupling, or toothed gearing, check that the device provided will apply the brake if the motor becomes disconnected from the gear reducer. Have the switch manually operated and verify that all operating mechanisms are present, clean, lubricated, and in good condition.	
1.7		Escalators installed under A17.1–1990 and later editions.	
1.7.1		Verify that the escalator cannot be started by the starting switch until the device is manually reset.	
1.8		Units installed under A17.1b–1995 and later editions.	
1.8.1		When a manual reset is required turn the power off and then back on, and then try the start switch to check that the device will not reset. Also, some indication that the device has been activated needs to be provided.	
2		Frequency 	
2.1		Mandated interval 12 months.	
3		A17.2 Requirements 	
3.1		Item: 8.6.2	

Task Name	8.6.8.15.7 Reversal Stop Switch	Scope:	ESC	
Notes		
1		Program Procedures:	
1.1		Manually operate the device and verify that all operating mechanisms are present and in good condition and that the device will open the circuits to the driving machine motor and brake to stop an ascending escalator from reversing its direction of travel.	
1.2		Escalators installed under A17.1–1990 and later editions.	
1.2.1		Verify that the escalator cannot be started by the starting switch until the device is manually reset.	
1.3		Units installed under A17.1b–1995 and later editions.	
1.3.1		When a manual reset is required for, turn the power off and then back on, and then try the start switch to check that the device will not reset.	
1.4		Also, some indication that the device has been activated needs to be provided.	
1.5		There are several different types of devices that are used (friction reversal devices, speed monitoring, etc.). Therefore, the type of device will dictate the testing procedure. If the device cannot be manually operated, a written procedure must be provided by the person or firm performing the test.	
2		Frequency 	
2.1		Mandated interval 12 months.	
3		A17.2 Requirements 	
3.1		Item: 8.7.2	

Task Name	8.6.8.15.8 Broken Step-Chain or Treadway Device	Scope:	ESC	
Notes		
1		Program Procedures:	
1.1		Manually operate the broken step chain devices to verify that each will interrupt power to the driving machine and brake.	
1.2		Visually inspect each device to verify that they are in position to operate and will activate when either step chain breaks, and (where automatic tensioning is not provided) when excessive sag occurs in either step chain.	
1.3		Escalators installed under A17.1–1990 and later editions.	
1.3.1		Verify that the escalator cannot be started by the starting switch until the device is manually reset.	
1.4		Units installed under A17.1b–1995 and later editions.	
1.4.1		When a manual reset is required, turn the power off and then back on, and then try the start switch to check that the device will not reset.	
1.4.2		Also, some indication that the device has been activated needs to be provided.	
2		Frequency 	
2.1		Mandated interval 12 months.	
3		A17.2 Requirements 	
3.1		Item: 8.8.2	

Task Name	8.6.8.15.9 Step Upthrust Device	Scope:	ESC	
Notes		
1		Program Procedures:	
1.1		Escalators installed under A17.1b–1980 and later editions and those required to comply with A17.3.	
1.1.1		Have the operation of the step upthrust device tested as follows:	
1.1.1.1		With the escalator running down, apply an upthrust force to a step to resist leveling as it enters the lower curve. This should stop the escalator.	
1.1.2		If this will not operate the upthrust device, it should be checked more closely during the internal inspection described in Item 8.9.2 and a meter should be used to verify that the safety circuit is opened when the upthrust device operates.	
1.2		Escalators required to comply with A17.3 that have smooth risers.	
1.2.1		Test the operation of the upthrust at both the upper and lower curves.	
1.3		Test the lower curve with the escalator running down and the upper curve with the escalator running up. This may require two pair of pliers gripping on both sides at the front of the step tread.	
1.4		While the steps are removed (Item 8.12.2), manually move the mechanism and visually inspect the components of the upthrust device. Visually examine the upthrust tabs on each step for damage, alignment, and attachment (see Fig. 8.9.2).	
2		Frequency 	
2.1		Mandated interval 12 months.	
3		A17.2 Requirements 	
3.1		Item: 7.9.2 & 8.9.2	

Task Name	8.6.8.15.10 Missing Step or Pallet Device	Scope:	ESC	
Notes		
1		Program Procedures:	
1.1		Escalators installed under A17.1b–1989 and later editions.	
1.1.1		Test the missing step device by running the escalator with a step missing on the underside of the escalator.	
1.1.2		The device must stop the escalator before the gap resulting from the missing step emerges from the combplate.	
1.1.3		Escalators installed under A17.1–1990 and later editions.	
1.1.3.1		Verify that the escalator cannot be started by the starting switch until the device is manually reset.	
1.1.4		Units installed under A17.1b–1995 and later editions.	
1.1.5		When a manual reset is required, turn the power off and then back on, and then try the start switch to check that the device will not reset. Also, some indication that the device has been activated needs to be provided.	
2		Frequency 	
2.1		Mandated interval 12 months.	
3		A17.2 Requirements 	
3.1		Item: 10.9.2	

Task Name	8.6.8.15.11 Step or Pallet Level Device	Scope:	ESC	
Notes		
1		Program Procedures:	
1.1		Escalators installed under A17.1–1990 and later editions.	
1.1.1		Visually inspect the step level devices at each end and on both sides to verify that it is in place and able to function. Have the switch manually operated to verify that it will open the safety circuit and stop the escalator.	
1.2		Escalators installed under A17.1–1990 and later editions.	
1.2.1		Verify that the escalator cannot be started by the starting switch until the device is manually reset.	
1.3		Units installed under A17.1b–1995 and later editions.	
1.3.1		When a manual reset is required for, turn the power off and then back on, and then try the start switch to check that the device will not reset. Also, some indication that the device has been activated needs to be provided.	
2		Frequency 	
2.1		Mandated interval 12 months.	
3		A17.2 Requirements 	
3.1		Item: 8.11.2	

Task Name	8.6.8.15.12 Steps, Pallet, Step or Pallet Chain, and Trusses	Scope:	ESC	
Notes		
1		Program Procedures:	
1.1		Have at least half of the steps removed, and then move the remaining steps to the upper half of the escalator.  Some escalators use the steps as the side guide means and require every sixth step to be left in to prevent the chain from falling off.	
1.2		Visually inspect the drip pans, undersides of steps, trusses, roller tracks, chains, handrails, and the interiors of balustrades, skirts, and newels. Verify that they are present, in good condition, clean of dirt and rubbish, and free of oil and combustibles.	
1.3		Visually inspect for any damage to the fire-resistive material on the escalator enclosure.	
1.4		Visually inspect the chains for lubrication and build-up of dirt and grease. Lack of lubrication may be indicated by rouge (red rust deposits) on the side plates of the links.	
1.5		Escalators installed under A17.1–1978 and later editions.	
1.5.1		Verify that cast iron links are not used on.	
1.5.1.1		Have a small hole drilled (in a low stress area) and observe the drill cuttings.	
1.5.1.2		If the cuttings are a fine powder, cast iron is indicated.	
1.5.1.3		If the cuttings are shavings, then the links are not cast iron.	
1.6		Check the operation of any escalator step-chain tension devices. If they are of the automatically operated “tension-weight”-type, verify that the truss is provided with a positive means to retain the weights in the truss if the weights are released.	
1.7		Move the remaining steps to the lower half of the escalator and inspect the upper half in the same manner.	
1.8		Inspect each of the steps for evidence of structural damage, condition of the step rollers and upthrust tabs and material. Verify that the step tread material is non-combustible or that the undersides are properly covered with fire-resistive materials.	
1.9		Escalators installed under A17.1–1955 through A17.1–1993.	
1.9.1		Require that step frames be made of non-combustible materials.	
1.10		A17.1a–1994 and later editions.	
1.11		Specifically required that step frames, treads, and risers, excluding any attachments or inserts, be made of metal (except magnesium alloys) or meet certain flammability requirements.	
2		Frequency 	
2.1		Mandated interval 12 months.	
3		A17.2 Requirements 	
3.1		Item: 8.12.2	

Task Name	8.6.8.15.13 Handrail Safety Systems	Scope:	ESC	
Notes		
1		Program Procedures:	
1.1		Examine the handrail drive systems to ensure that all chains, pulleys, gears, rollers, and belts are present and in good condition. The operation should be free of excessive noise and slack, which indicates wear.	
1.2		Escalators installed under A17.1a–1988 through A17.1b–1992.	
1.2.1		Test the operation of the stopped handrail device. Have the handrail motion sensor mechanically disconnected while the unit is off and then run the unit, or grab the handrail and stall it while the escalator is running.	
1.2.2		Verify that the alarm sounds immediately and the escalator stops within 15 sec.	
1.2.3		Escalators installed under A17.1–1993 and later editions.	
1.2.3.1		Check the operation of the handrail speed monitoring device. An alarm must sound immediately.	
1.3		For escalators installed to A17.1–2000 and later editions.	
1.3.1		The person or firm maintaining the equipment must provide a written checkout procedure and demonstrate that the handrail speed does not change when a retarding force, up to the maximum required by Code, is applied opposite to the direction of travel. 
Note that it may be easier to retard the handrail motion when the handrail is traveling in the down direction (i.e., the retarding force will oppose the handrail drive system).	
2		Frequency 	
2.1		Mandated interval 12 months.	
3		A17.2 Requirements 	
3.1		Item: 8.13.2 & 7.3.2	

Task Name	8.6.8.15.14 Heaters and Outdoor Units 	Scope:	ESC	
Notes		
1		Program Procedures:	
1.1		Escalators installed under A17.1a–1988 and later editions.	
1.1.1		Heaters are required for only if steps are subject to snow or freezing rain. Check that heaters are operational. Heaters may be located inside the unit.	
2		Frequency 	
2.1		Mandated interval 12 months.	
3		A17.2 Requirements 	
3.1		Item: 7.18.2	

Task Name	8.6.8.15.15 Permissible Stretch in Escalator Chains	Scope:	ESC	
Notes		
1		Program Procedures:	
1.1		Have at least half of the steps removed and then move the remaining steps to the upper half of the escalator. Some escalators use the steps as the side guide means and require every sixth step to be left in to prevent the chain from falling off.	
1.2		Visually inspect the drip pans, undersides of steps, trusses, roller tracks, chains, handrails, and the interiors of balustrades, skirts, and newels. Verify that they are present, in good condition, clean of dirt and rubbish, and free of oil and combustibles.	
1.3		Visually inspect for any damage to the fire-resistive material on the escalator enclosure.	
1.4		Visually inspect the chains for lubrication and build-up of dirt and grease. Lack of lubrication may be indicated by rouge (red rust deposits) on the side plates of the links.	
1.5		Escalators installed under A17.1–1978 and later editions.	
1.5.1		Verify that cast iron links are not used on. 	
1.5.1.1		Have a small hole drilled (in a low stress area) and observe the drill cuttings.	
1.5.1.2		If the cuttings are a fine powder, cast iron is indicated.	
1.5.1.3		If the cuttings are shavings, then the links are not cast iron.	
1.6		Check the operation of any escalator step-chain tension devices. If they are of the automatically operated “tension-weight”-type, verify that the truss is provided with a positive means to retain the weights in the truss if the weights are released.	
1.7		Move the remaining steps to the lower half of the escalator and inspect the upper half in the same manner.	
1.8		Inspect each of the steps for evidence of structural damage, condition of the step rollers and upthrust tabs and material. Verify that the step tread material is non-combustible or that the undersides are properly covered with fire-resistive materials.	
1.9		Escalators installed under A17.1–1955 through A17.1–1993.	
1.9.1		Require that step frames be made of non-combustible materials.	
1.10		A17.1a–1994 and later editions.	
1.10.1		Require that step frames, treads, and risers, excluding any attachments or inserts, be made of metal (except magnesium alloys) or meet certain flammability requirements.	
2		Frequency 	
2.1		Mandated interval 12 months.	
3		A17.2 Requirements 	
3.1		Item: 8.12.2	

Task Name	8.6.8.15.16 Disconnected Motor Safety Device	Scope:	ESC	
Notes		
1		Program Procedures:	
1.1		If the driving machine is connected to the main drive shaft by a chain, check the broken drive chain device to verify that it will apply the main shaft brake and stop the drive machine if the drive chain parts.	
1.2		All parts of the device should be in good condition and show freedom to move.	
1.3		Have the switch manually operated and verify that it will open the drive motor circuit.	
1.4		Common devices include a block that is held in tension by the drive chain that activates the switch when tension is lost, or a plate that depresses a switch when the drive chain strikes it.	
1.5		Escalators installed under A17.1–1990 and later editions.	
1.5.1		Verify that the escalator cannot be started by the starting switch until the device is manually reset.	
1.6		Units installed under A17.1b–1995 and later editions.	
1.6.1		When a manual reset is required, turn the power off and then back on, and then try the start switch to check that the device will not reset. Also, some indication that the device has been activated needs to be provided.	
1.7		If the drive motor is attached to a gear reducer by means other than a continuous shaft, coupling, or toothed gearing, check that the device provided will apply the brake if the motor becomes disconnected from the gear reducer.	
1.8		Have the switch manually operated and verify that all operating mechanisms are present, clean, lubricated, and in good condition.	
1.9		Escalators installed under A17.1–1990 and later editions.	
1.10		Verify that the escalator cannot be started by the starting switch until the device is manually reset.	
1.11		Units installed under A17.1b–1995 and later editions.	
1.11.1		When a manual reset is required for, turn the power off and then back on, and then try the start switch to check that the device will not reset. Also, some indication that the device has been activated needs to be provided.	
2		Frequency 	
2.1		Mandated interval 12 months.	
3		A17.2 Requirements 	
3.1		Item: 8.6.2	

Task Name	8.6.8.15.17 Response to Smoke Detectors (6.1.6.8 or 6.2.6.7) (Items 8.15 and 10.15)	Scope:	ESC	
Notes		
1		Program Procedures:	
1.1		Units installed under A17.1a–1994 and later editions.	
1.1.1		When smoke detectors are provided that will shut down a running unit, verify that the emergency stop button alarm will sound and the unit does not shut down for at least 15 s. The unit may be tested by activating the smoke detector or by other means.
CAUTION: If the sensing system is connected to a central fire alarm system, notify proper authorities before activating.	
2		Frequency 	
2.1		Mandated interval 12 months.	
3		A17.2 Requirements 	
3.1		Item: 8.15.2	

Task Name	8.6.8.15.18 Comb-Step or Comb-Pallet Impact Device	Scope:	ESC	
Notes		
1		Program Procedures:	
1.1		Units installed under A17.1b–1992 and later editions.	
1.1.1		Have the operation of combplate impact devices tested as follows:	
1.1.1.1		Have a vertical force applied to the center front edge of the combplate until the device trips. Record the force required to trip the device and verify the unit will not start until manually reset.	
1.1.1.2		Have a force applied in the direction of travel at the front center of the combplate, increasing the force until the device trips. Record the force required to trip the device and verify the unit will not start until manually reset.	
1.1.1.3		Have a force applied in the direction of travel on one side of the front of the combplate, increasing the force until the device trips. Record the force required to trip the device and verify the unit will not start until manually reset. Repeat this test for the opposite side.	
1.1.2		Escalators installed to A17.1b–1992 through A17.1–1996.	
1.1.2.1		Note that while the maximum horizontal forces were 112 lbf (500 N) at each side and 225 lbf (1 000 N) at the center of the combplate.	
1.1.3		 A17.1a–1997 and later editions.	
1.1.3.1		It is permitted to have the maximum horizontal forces at higher values.	
2		Frequency 	
2.1		Mandated interval 12 months.	
3		A17.2 Requirements 	
3.1		Item: 7.7.2	

Task Name	8.6.8.15.19 Step/Skirt Performance Index	Scope:	ESC	
Notes		
1		Program Procedures:	
1.1		Visually inspect the condition of step/skirt panel gap while the escalator is stationary.	
1.2		Mark a step and operate the escalator to bring other steps into view as required until every step on the escalator has been examined.	
1.3		Document any outstanding conditions, such as step/skirt gaps, damaged steps, damaged step treads, damaged skirt panels, mismatched skirt panel joints, or sharp edges on the edge of the step or skirt panel. Pay particular attention to the gaps between the riser portion of the step and the skirt panel.	
1.4		Run the escalator in its normal direction of travel for at least two cycles of steps. If the escalator is operated in both directions, run the escalator for at least two cycles of steps in both the up and down directions.	
1.5		Visually examine the step/skirt gaps along the entire length of the escalator. Pay particular attention to the gaps at the transitions. Note any abnormal operation of the escalator such as jumping steps, irregular step movement, step/skirt panel interference, or skirt panel misalignments.	
1.6		Step/Skirt Performance Index Test (Moving Step). Select two steps to conduct this test. One step should be selected as a representative step. It should appear similar to the majority of the other steps on the escalator. A second step should be chosen to represent any unusual step or group of steps. Steps that appear to have been replaced, exhibit wear, show signs of damage, or move in irregular ways are candidates for the second test step.	
1.6.1		If all the steps appear similar, then the steps should be randomly selected. In any case, the test steps should be separated by at least eight steps. If the escalator is a “DOWN” escalator, or the escalator is operated in both directions, the test step should be moved to the top of the escalator before the curved skirt panels prior to each test run, and run down during the test. If the escalator is normally operated as an “UP” escalator, then the test step should be moved to the bottom of the escalator just before the curved skirt panels prior to each test run, and run up during the test.	
1.6.2		Install the test apparatus on the step to be tested. Install a polycarbonate test specimen on the test apparatus.	
1.6.3		Orient a frictional force transducer to match the angle of the skirt panel as shown in Fig. 7.17.2.	
1.6.4		Using the test apparatus apply a 25 lbf (110 N) load between the step and skirt. The load should be maintained throughout the test.	
1.6.5		Start a new test and begin acquiring data as soon as the escalator is operating at rated speed. Data obtained prior to the escalator operating at rated speed is to be discarded. A coefficient of friction and a loaded gap measurement should be recorded every 6 in. (150 mm) at a minimum. 	
1.6.6		Run the escalator continuously until the test step and apparatus reach the curved skirt panel at the opposite end of the escalator. Stop collecting data.
Process the collected data.
Fig. 7.17.2 Angle of Skirt Panel
	
1.6.7		Repeat steps (1) through (6) for both sides of both test steps.	
1.6.7.1		Use a new polycarbonate test specimen for each run. The index values obtained should not exceed the values specified by ASM E A17.1 and/or A17.3 Codes.	
2		Frequency 	
2.1		Mandated interval 12 months.	
3		A17.2 Requirements 	
3.1		Item: 7.17.2	

Task Name	8.6.8.15.20 Clearance between Step and Skirt (Loaded Gap)	Scope:	ESC	
Notes		
1		Program Procedures:	
1.1		This test will be conducted in the curved portions of the escalator where moving step testing was not conducted. The steps selected for this test can be the same as those used for the coefficient of friction and loaded gap moving step tests. The escalator should be stationary while these measurements are taken.	
1.1.1		Move the step to be tested to the flat portion of the escalator at the bottom of the escalator. The edge of the combplate should be approximately 6 in. (150 mm) from the edge of the test step.	
1.1.2		Install the test apparatus on the step to be tested. Install a polycarbonate test specimen on the portion of the apparatus that touches the skirt panel.	
1.1.3		Using the test apparatus apply a 25 lbf (110 N) load between the step and the skirt.	
1.1.4		Measure and record the loaded gap.	
1.1.5		Remove the 25 lbf (110 N) load and advance device or escalator so that the device moves approximately 12 in. (300 mm) further away from the combplate.	
1.2		Repeat steps (3) through (5) until the test apparatus has reached the point where the coefficient of friction and loaded gap moving step test begins.	
1.3		Repeat steps (1) through (6) for the opposite skirt panel.	
1.4		Repeat the previous seven steps, but this time start at the top of the escalator and gradually move the escalator down until the apparatus has reached the area where moving step measurements were made. The recorded loaded gap measurements should not exceed the values specified by ASME A17.1 and/or ASME A17.3 Codes. A17.1 and/or A17.3 Codes.	
2		Frequency 	
2.1		Mandated interval 12 months.	
3		A17.2 Requirements 	
3.1		Item: 7.7.2	

Task Name	8.6.8.15.21 Inspection Controls 	Scope:	ESC	
Notes		
1		Program Procedures:	
1.1		Each escalator shall be equipped with inspection controls not accessible to the general public during normal operation to provide constant pressure operation during maintenance, repair, or inspection by means of a manually operated control device.	
1.2		General Requirements:	
1.2.1		Switches for transferring the control of the escalator to inspection operation shall be provided or a switch shall be provided at each landing in a portable control station; the switch(es) shall function as follows:	
1.2.1.1		be through a contact that shall be positively opened mechanically and whose opening shall not depend solely on springs	
1.2.1.2		be manually operated	
1.2.1.3		be labelled “INSPECTION”	
1.2.1.4		have two positions, labelled “INSPECTION” or “INSP” and “NORMAL” or “NORM”	
1.2.1.5		when in the “INSPECTION” position, it shall cause the movement of the escalator to be solely under the control of constant pressure operating devices at that landing or in that portable control station	
1.2.1.6		be arranged so that if more than one inspection transfer switch is in the “INSPECTION” position, then all constant pressure operating devices at all locations shall be inoperative	
1.2.1.7		be protected against accidental contact	
1.2.2		Constant pressure operating devices shall:	
1.2.2.1		allow movement of the escalator only by constant application of manual pressure	
1.2.2.2		be distinctly recognizable from indications on the device as to the direction of travel controlled	
1.2.2.3		be protected against accidental contact	
1.2.2.4		be located so that the escalator steps are within sight	
1.2.3		A stop switch conforming to 6.1.6.3.15 shall be provided adjacent to the constant pressure operating devices.	
1.2.4		When portable control stations are used, the cord length shall not exceed 3 000mm(120 in.) in length.	
1.2.5		Plug-in Portable Control Station. A plug-in portable control station shall be permitted, provided that:	
1.3		either a transfer switch conforming to 6.1.6.2.2(a)(1) is complied with, or when plugged in, the escalator shall automatically transfer to inspection operation	
1.3.1		when the switch, if provided, is in the “INSPECTION” position, or when the control station is plugged in, it shall cause the movement of the escalator to be solely under the control of constant pressure operating devices contained in the portable unit	
1.3.2		the plug-in portable control station is stored at the upper landing machinery space	
2		Frequency 	
2.1		Mandated interval 12 months.	
3		A17.2 Requirements 	
3.1		Item: 6.1.6.2.2	

Task Name	8.6.8.15.22 Step Lateral Displacement Device (6.1.6.3.14)	Scope:	ESC	
Notes		
1		Program Procedures:	
1.1		Escalators installed under A17.1b–1980 and later editions and those required to comply with A17.3.	
1.1.1		Have the operation of the step upthrust device tested as follows:	
1.1.1.1		With the escalator running down, apply an upthrust force to a step to resist levelling as it enters the lower curve. This should stop the escalator.	
1.1.1.2		If this will not operate the upthrust device, it should be checked more closely during the internal inspection described in Item 8.9.2 and a meter should be used to verify that the safety circuit is opened when the upthrust device operates.	
1.1.1.3		For escalators required to comply with A17.3 that have smooth risers, test the operation of the upthrust at both the upper and lower curves. Test the lower curve with the escalator running down and the upper curve with the escalator running up. This may require two pair of pliers gripping on both sides at the front of the step tread.	
1.2		For curved escalators, manually test the device.	
2		Frequency 	
2.1		Mandated interval 12 months.	
3		A17.2 Requirements 	
3.1		Item: 7.9.2	

Task Name	8.6.8.15.23 Seismic Risk Zones 2 or Greater	Scope:	ESC	
Notes		
1		Program Procedures:	
1.1		Check the operation of the seismic switch where provided.	
2		Frequency 	
2.1		Mandated interval 12 months.	
3		A17.2 Requirements 	
3.1		Item: 7.20.2	
Moving Walk Maintenance Procedures
Task Name	8.6.9 Maintenance of Moving Walks	Scope:	MW	
Notes		
1		Program Procedures: 	
1.1		The maintenance of moving walks shall conform to 8.6.1 through 8.6.3 and 8.6.9.	
1.1.1		Procedure Sub-Point as required 	
1.2		Insert Program Procedure	
2		Frequency 	
2.1		Mandated interval 3 months maximum.	
2.2		Category 1 Test to be done annually	
3		A17.2 Requirements 	
3.1		Part 9 Escalator- External & Part 10 Escalator- Internal	

Task Name	8.6.9.1 Handrails.	Scope:	MW	
1		Program Procedures: 	
1.1		Mark the handrail and monitor it through on complete cycle.	
1.2		Observe the condition of the handrail	
1.2.1		Must be free of cuts, cracks and gouges or anything else which may cause a hazard.	
1.2.2		Any rust or rubber build-up on the guide may be cause for additional inspection.	
1.2.3		Note finger guards are present and in good condition and properly to prevent fingers from being drawn into the newel.	
1.2.4		There are many types of guards in use, ensure they are in good condition and operate as designed.	
1.3		Ride the escalator its entire length holding the handrails on both sides.	
1.3.1		The handrails should move smoothly without jerking and at substantially the same speed as the steps.	
1.3.2		Ensure it does not stall by griping the handrail tightly.	
1.3.3		Observe any noises which may indicate wear.	
1.3.4		Check for loose conditions and horizontal clearances which may indicate guide or interior wear of the handrail.	
2		Frequency 	
2.1		Mandated interval 3 months 	
3		A17.2 Requirements 	
3.1		Item: 9.3.1	

Task Name	8.6.8.2 Step-to-Skirt Clearance	Scope:	MW	
Notes		
1		Program Procedures: 	
1.1		Verify the clearance between skirt panels and treadway using a thickness gauge or by laying a small rule on the step edge.	
1.1.1		Several treadways should be checked through their entire travel	
1.2		Clearances shall be maintained as required by code in effect at installation	
2		Frequency 	
2.1		Mandated interval 3 months 	
3		A17.2 Requirements 	
3.1		Item: 9.17.1	

Task Name	8.6.9.2 Combplates	Scope:	MW	
Notes		
1		Program Procedures:	
1.1		Inspect the comb for missing teeth and proper mesh with each steps tread.	
1.2		Verify proper mesh with step treads.	
1.2.1		Teeth should mesh and the leading edge should be below the tread surface.	
1.2.2		Any comb segment with missing teeth should be replaced.	
1.3		For moving walks installed under A17.1a–1988 and later editions and moving walks required to conform to A17.3a–1994, the comb surfaces must contrast visibly by color, pattern, or texture.	
2		Frequency 	
2.1		Mandated interval 3 months 	
3		A17.2 Requirements 	
3.1		Item: 9.7.1	
Task Name	8.6.9.3 Pallets	Scope:	MW	
Notes		
1		Program Procedures:	
1.1		Mark one of the treadways with chalk, and then run the moving walk through one complete revolution. Check that each step is present, clean, free of debris, and that the step treads and risers are in good condition.	
1.2		Check at least every tenth pallet or a distance of approximately one-tenth the entire length, by riding on it, to verify that the following requirements are met:	
1.2.1		There is no excessive movement or play in the direction of travel, at right angles to the direction of travel, and vertically. While standing on the treadway, a shift of weight should not cause the treadway to strike the skirt panels.	
1.2.1.1		Belt Type. The treadway consists of an integral belt of uniform width and thickness, made or spliced in one continuous piece forming a loop.	
1.2.1.2		Pallet Type. The treadway consists of closely coupled meshing pallets, or small platforms. This is similar to an escalator step without a riser.	
1.2.1.3		Belt Pallet Type. For moving walks installed under A17.1–1987 and earlier editions, this type was permitted. The treadway consists of a continuous integral belt supported on coupled pallets. The pallets may not ordinarily be visible when standing on the treadway.	
1.2.2		Alternate cleats on adjacent pallets should mesh so that no continuous transverse gap exists between pallets. Mesh can be verified by trying to fit a thin piece of stiff paper or business card between treadways while the moving walk is moving in the up direction. The check should be made across the entire width.	
1.2.3		The tread surface should be slotted in the direction parallel to the travel so that they mesh with the combplate teeth. Verify that a cleat is formed adjacent to the skirt panel on each side of the treadway.	
1.2.4		The cleats in the treadway tread surfaces should not be damaged, broken, or worn. Special consideration should be given to excessive clearance and sharp edges. While standing on the treadway tread, verify that it provides a secure foothold.	
1.2.5		A jerking motion on the treadways and excessive noise in the machinery space indicates that the drive and support system should be examined to discover the source or cause.	
1.2.6		Use a straight edge to verify that adjacent pallets do not vary more than 1⁄16 in. (1.6 mm) in elevation (vertical displacement). On belt-pallet-type treadways, verify that the fasteners that attach the belt to the pallets do not project above the exposed treadway surfaces. Inspect the splices in belt-type treadways to verify that they produce a continuous unbroken treadway.	
1.2.6.1		For moving walks required to conform to A17.3a–1994, check that the splices of belt-type treadways are continuous and unbroken.	
2		Frequency 	
2.1		Mandated interval 3 months 	
3		A17.2 Requirements 	
3.1		Item: 9.9.1	

Task Name	8.6.9.2 Combplates	Scope:	MW	
Notes		
1		Program Procedures:	
1.1		Rollers, tracks, and chains shall be examined, repaired, or replaced when necessary to ensure required clearances.	
2		Frequency 	
2.1		Mandated interval 3 months 	
3		A17.2 Requirements 	
3.1		Item: 10.12.1	
	
Task Name	8.6.9.5 Belt-Type Treadway	Scope:	MW	
Notes		
1		Program Procedures:	
1.1		See 8.6.9.3 requirements.	
2		Frequency 	
2.1		Mandated interval 3 months 	
3		A17.2 Requirements 	
3.1		Item: 9.9.1	

Task Name	8.6.9.6 Signs	Scope:	MW	
Notes		
1		Program Procedures:	
1.1		Moving walks installed under A17.1–1981 and later editions and moving walks required to conform to A17.3a–1994	
1.1.1		Verify that the required caution signs are located at both entrances readily visible to boarding passengers.	
1.2		For moving walks installed under A17.1–1996 through A17.1d–2000	
1.2.1		Verify that any additional signs are located at least 10 ft (3.05 m) horizontally from the end of the newels and that they do not impede traffic or otherwise cause persons to stop.	
2		Frequency 	
2.1		Mandated interval 3 months 	
3		A17.2 Requirements 	
3.1		Item: 9.6.1	

Task Name	8.6.9.6 Signs	Scope:	MW	
Notes		
1		Program Procedures:	
1.1		Moving walks installed under A17.1–1981 and later editions.	
1.2		Ceiling intersection guards are required where the clearance of the exterior deck and the ceiling or soffit is 12 in. (305 mm) or less or where the projected intersection of the exterior deck and ceiling or soffit is 24 in. (610 mm) or less from the handrail centerline.	
1.2.1		This requirement was restricted to high decks for moving walks installed under A17.1–1987 and later editions and moving walks required to conform to A17.3a–1994.	
1.3		Moving walks installed under A17.1–1987 and later editions and moving walks required to conform to A17.3a–1994	
1.3.1		On low decks for where the centerline of the handrail is 14 in. (356 mm) or less from the ceiling or soffit, guards are also required.	
1.3.2		Inspect the guards for damage and secure attachment.	
2		Frequency 	
2.1		Mandated interval 3 months 	
3		A17.2 Requirements 	
3.1		Item: 9.16.1	

Task Name	8.6.9.8 Antislide Devices	Scope:	MW	
Notes		
1		Program Procedures:	
1.1.1		Moving walks installed under A17.1a–1988 and later editions. and moving walks required to comply with A17.3a–1994	
1.1.2		For low deck check to see that deck barricades, when required, are firmly in place and in good condition when the outer deck exceeds 5 in. (125 mm) and the deck is more than 36 in. (915 mm) above any part of the floor. The barrier must extend to 4 in. (102 mm) below the handrail top.	
2		Frequency 	
2.1		Mandated interval 3 months 	
3		A17.2 Requirements 	
3.1		Item: 9.8.1	

Task Name	8.6.9.9 Handrail Guards	Scope:	MW	
Notes		
1		Program Procedures:	
1.1.1		See 8.6.9.1 Requirements.	
2		Frequency 	
2.1		Mandated interval 3 months 	
3		A17.2 Requirements 	
3.1		Item: 9.3.1	

Task Name	8.6.9.10 Brakes	Scope:	MW	
Notes		
1		Program Procedures:	
1.1.1		Brakes shall be maintained in compliance with the applicable requirements of 8.6.4.6, and adjusted to the torque shown on the data plate, where provided.	
2		Frequency 	
2.1		Mandated interval 3 months 	
3		A17.2 Requirements 	
3.1		Item: 10.4.1	

Task Name	8.6.9.11 Cleaning	Scope:	MW	
Notes		
1		Program Procedures:	
1.1.1		The interiors of moving walks and their components shall be cleaned to prevent an accumulation of oil, grease, lint, dirt, and refuse. The frequency of the cleaning will depend on service and conditions, but an examination to determine if cleaning is necessary shall be required at least once a year.	
2		Frequency 	
2.1		Recommended as needed or minimum interval 12 months 	
3		A17.2 Requirements 	
3.1		Item: 10.1.1	

Task Name	8.6.9.11 Cleaning	Scope:	MW	
Notes		
1		Program Procedures:	
1.1		The floor surfaces adjacent to the landing plates must be continuous with the top of the landing plate, with no abrupt changes in elevation of more than 1⁄4 in. (6.4 mm).	
1.2		Access to and egress from the moving walk should be free of obstacles and tripping hazards.	
1.3		Check that the pit covers are present and in good condition	
1.4		Moving walks installed under A17.1–1965 through A17.1b–1989 editions.	
1.4.1		The landing plate should be smooth from the line of intersection of the teeth and the treadway surface for a distance not to exceed 4 in. (102 mm) and not less than 1 in. (25 mm).	
1.5		Moving walks installed under the A17.1b–1989 and later editions.	
1.5.1		A safety zone should be maintained free of obstacles. These Code dimensions are minimums and traffic patterns may require larger distances.	
1.6		While standing on the unit, verify that the landing and combplates provide a secure foothold and that outdoor units provide a secure foothold when wet.	
2		Frequency 	
2.1		Recommended as needed or minimum interval 12 months 	
3		A17.2 Requirements 	
3.1		Item: 9.4.1	

Task Name	8.6.9.13 Clearances	Scope:	MW	
Notes		
1		Program Procedures:	
1.1		Check the clearance between the skirt panel and the treadway using a thickness gauge or by laying a small rule on the side of the treadway to read the distance. The treadways should be checked at several points along its entire travel.	
1.2		Moving walks installed under A17.1–1971 and later editions and moving walks required to conform to A17.3a–1994.	
1.2.1		The horizontal clearance between the treadway and skirt panels should not exceed 1⁄4 in. (6.4 mm). For skirtless balustrades installed under A17.1–1965, the vertical clearance between the top of the treadway and the underside of the balustrade should not exceed 1⁄8 in. (3.2 mm).	
1.3		For units installed under A17.1–1971 and later editions and moving walks required to conform to A17.3a–1994, the vertical clearance between the top of the treadway and the underside of the balustrade should not exceed 1⁄4 in. (6.4 mm). See Fig. 9.17.1. Verify that skirt panels are smooth for movingwalks installed under A17.1a–1988 and later editions and moving walks required to conform to A17.3a–1994.	
2		Frequency 	
2.1		Recommended as needed or minimum interval 12 months 	
3		A17.2 Requirements 	
3.1		Item: 9.15.1	

Category 1 - Periodic Test Procedures Moving Walks

Task Name	8.6.8.15 Periodic Test Requirements-Category 1	Scope:	MW	
Notes		
1		Program Procedures: 	
2		Frequency 	
2.1		For test frequency, see 8.11.1.3	
3		A17.2 Requirements 	
3.1		Section 9 Moving Walk External & Section 10 Moving Walk Internal	

Task Name	8.6.8.15.1 Machine Space	Scope:	MW	
Notes		
1		Program Procedures:	
1.1		Determine that the means of access is securely fastened in place.	
1.2		If a door is used, verify that it is kept locked and the key is available only to authorized personnel.	
1.3		Check the lighting and test the receptacle.	
1.4		Moving walks installed under A17.1–1981 and later editions.	
1.4.1		In remote machine space, check that the lighting is at least 10 fc (108 lx).	
1.5		Verify that the space is clean of dirt and rubbish and free of oil and combustibles.	
1.6		Combustible items unrelated to moving walk maintenance or operation with a flashpoint less than 110°F (43°C) should not be present.	
1.7		Water should not have accumulated on the floor of the space.	
1.8		Verify that jumpers are not stored in the machine space, hoistway, or pit.	
1.9		Verify that no penetrations exist through the sides and undersides of the machinery space and truss that compromises its fire resistance rating or allows contact with moving parts by the public.	
1.10		Moving walks installed under A17.1–2000/B44-00 and later editions	
1.11		Check that a guard is in place to protect against accidental contact with the moving pallets or treadway.	
2		Frequency 	
2.1		Mandated  interval 12 months 	
3		A17.2 Requirements 	
3.1		Item: 10.1.2	

Task Name	8.6.8.15.2 Stop Switch	Scope:	MW	
Notes		
1		Program Procedures: 	
1.1		Test the operation of machine space stop switch(es) by placing them in the stop position, then make sure that everyone is clear and attempt to start the moving walk with the key switch.	
1.2		Moving walks installed under A17.1–2000/B44-00 and later editions.	
1.2.1		Check the operation of the inspection control device from each end.	
1.2.2		The device only permits movement by a constant pressure means, and clearly indicates the direction of travel.	
1.3		If a plug in control station is used, verify that it is stored in the upper landing machinery space.	
1.3.1		Have the unit operated with the inspection control device.	
1.3.2		Check that the device only permits movement by a constant pressure means, and clearly indicates the direction of travel.	
2		Frequency 	
2.1		Mandated interval 12 months.	
3		A17.2 Requirements 	
3.1		Item: 10.2.2	

Task Name	8.6.8.15.3 Controller and Wiring	Scope:	MW	
Notes		
1		Program Procedures: 	
1.1		Examine the controller visually to verify that it is clean and that the switches, contactors, and relays and their electrical connections are in good condition.	
1.2		Check that the fuses are in place, of the proper type and rating, and have not been jumped or otherwise tampered with.	
1.3		Check for jumper wires or other changes, which may indicate that safety devices have been defeated or altered.	
1.4		Visually examine wiring for damage and all components for evidence of overheating.	
1.5		Operate the main line circuit breakers or disconnect switch to verify that all power is removed from the drive machine.	
1.6		Verify that all electrical components are enclosed to prevent accidental contact.	
1.7		If heaters are present (see Item 9.18.2), verify that they are operational.	
1.8		Moving walks installed under A17.1–1965 through A17.1c–1986.	
1.8.1		Verify that the circuit breakers will not be automatically opened by the fire alarm.	
2		Frequency  	
2.1		Mandated interval 12 months.	
3		A17.2 Requirements 	
3.1		Item: 10.3.2	

Task Name	8.6.8.15.2 Stop Switch	Scope:	MW	
Notes		
1		Program Procedures: 	
1.1		Determine whether the driving machine is properly secured, lubricated, clean, and in good condition.	
1.2		Visually check the driving-machine fastenings and bearing caps to verify that they are secure and in place.	
1.3		Verify that the driving machine is connected to the main drive shaft by toothed gearing, a mechanical coupling, or a chain and that it is in good condition.	
1.4		Look for evidence of any excessive backlash in the driving gears or chains. If a chain is used to connect the driving machine to a sprocket on the main drive shaft, visually examine the chain and sprockets for wear, excessive slack, and proper lubrication.	
1.5		Lack of lubrication for a chain may be indicated by rouge (red rust deposits) on the side plates of the links.	
1.6		Moving walks installed under A17.1a–1988 and later editions.	
1.6.1		Verify that cast iron links are not used.	
1.6.2		If the links appear to be cast iron, have a small hole drilled (in a low stress area) and observe the drill cuttings.	
1.6.3		If the cuttings are a fine powder, cast iron is indicated. If the cuttings are shavings, then the links are not cast iron.	
1.6.4		Inspect any drive belts and sheaves for damage, wear, belt tension, and reasonable equality of tension in a set of belts.	
1.6.5		Visually examine the components for signs of overheating.	
1.6.6		Verify that an electrically released brake is present and automatically applied when power is interrupted.	
1.6.6.1		Units installed under A17.1–1987 and earlier editions.	
		A brake was not required for if the unit would not run in the down direction under rated load with the power off.	
1.6.6.2		Units installed under A17.1a–1988 and later editions and moving walks required to conform to A17.3a–1994.	
		The brake is to be located on the driving machine.	
		Earlier editions allowed the brake to be on the drive shaft.	
1.6.6.3		Moving walks installed under the A17.1–1981 through A17.1–1987 editions and A17.3.	
		The brake may be applied to specially attached braking surfaces directly on the treadway.	
1.6.6.4		Moving walks installed under A17.1a–1988 and later editions and moving walks required to conform to A17.3a–1994.	
		Where means other than a continuous shaft, mechanical coupling, or toothed gearing is used to connect the motor to the reduction gear, verify that the brake is located on the gear reducer or main drive shaft.	
1.6.6.5		A17.3a–1994.	
		Requires this brake on the main drive shaft or a specially attached braking surface attached directly to the treadway.	
1.6.7		Moving walks installed under A17.1a–1988 and later editions, and moving walks required to conform to A17.3a–1994.	
1.6.7.1		The brake may be magnetically applied using a ceramic permanent magnet. Prior to this, a mechanically applied brake was required. Visually inspect the condition of the brake pads, drums, and discs.	
1.6.8		Moving walks installed to A17.1a–1988 and later editions	
1.6.8.1		This brake must stop a down or horizontal running moving walk with a retardation not to exceed 3 ft/s2 (0.91 m/s2).	
1.6.9		Moving walks installed to A17.1a–1988 through A17.1–2000.	
1.6.9.1		This was a maximum rate.	
1.6.10		Moving walks installed to A17.1a–2002 and later editions.	
1.6.10.1		It is an average rate, but there is an additional restriction on the peak horizontal retardation, which is not intended to be field verified.	
1.6.11		It is not required to measure the actual retardation; the brake torque will provide verification that those requirements are met in addition to other brake.	
1.6.12		Moving walks installed under A17.1a–1988 and later editions.	
1.6.12.1		Have a nameplate or data plate that specifies the required brake torque.	
1.6.13		Moving walks installed under A17.1b–1989 and later editions.	
1.6.13.1		Require that the nameplate or data plate torque be specified as breakaway, the maximum torque required to cause the brake to begin moving, or dynamic, the torque required to keep the shaft moving very slowly at a steady rate. The location where the torque is to be measured is required to be clearly indicated.	
1.6.14		Moving walks installed under A17.1a–1991 and later editions.	
1.6.14.1		The nameplate or data plate is required to specify the range of brake torque.	
1.6.15		Moving walks installed under A17.1–2000 and later editions.	
1.6.15.1		The minimum stopping distance with no load must be indicated.	
1.6.16		Have the torque tested to verify that the torque complies and check the minimum stopping distance.	
1.6.17		Note that temperature can affect the brake torque.	
1.6.18		The torque wrench should have a current calibration certificate traceable to the National Bureau of Standards and have a range of at least 25% higher than the required torque.	
1.6.19		If the driving-machine brake is separated from the main drive shaft by a chain and the moving walk is capable of running by gravity with any load, check for presence of a second brake that is required on the main drive shaft. The requirements for this brake are	
1.6.19.1		A17.1–1965 through A17.1-1987	
		Required this brake to be electrically released unless an electrically released brake was provided on the driving machine.	
1.6.19.2		A17.1a–1988 and later editions.	
		Required the brake to be mechanically or magnetically applied (ceramic permanent magnets), and allowed it to be located either on the main drive shaft or a special braking surface attached to the treadway.	
1.6.19.3		Moving walks installed under the A17.1a–1988 through A17.1d–2000.	
1.6.19.4		The brake is required to stop horizontal or a down-running moving walk at a rate not greater than 3 ft/sec2 (0.91 m/s2).	
2		Frequency 	
2.1		Mandated interval 12 months.	
3		A17.2 Requirements 	
3.1		Item: 10.4.2	

Task Name	8.6.8.15.5 Speed Governor	Scope:	MW	
Notes		
1		Program Procedures: 	
1.1		Test speed governor when provided to verify that it is functioning.	
1.2		Manually operate the switch or use any testing mechanisms (such as flywheel weights) that may be provided.	
1.3		The flyballs and all operating mechanisms must be present and in good operating condition. When the switch is opened, it should interrupt power to the driving machine.	
1.4		Moving walks installed under A17.1–1990 and later editions.	
1.4.1		Verify that the moving walk cannot be started by the starting switch until the device is manually reset.	
1.5		A17.3a–1994.	
1.5.1		Requires that the speed governor activate when the speed exceeds 20% above the rated speed.	
1.6		A17.1–1965 and later editions.	
1.7		Require that the speed governor activate when the speed exceeds 40% above the rated speed.	
1.8		Units installed under A17.1b–1995 and later editions.	
1.8.1		When a manual reset is required for, turn the power off and then back on, and then try the start switch to check that the device will not reset.	
1.8.2		Also, some indication that the device has been activated needs to be provided.	
2		Frequency 	
2.1		Mandated interval 12 months.	
3		A17.2 Requirements 	
3.1		Item: 10.5.2	
Task Name	8.6.8.15.6 Broken Drive-Chain Device	Scope:	MW	
Notes		
1		Program Procedures: 	
1.1		If the driving machine is connected to the main drive shaft by a chain, check the broken drive chain device to verify that it will apply the main shaft brake and stop the drive machine if the drive chain parts.	
1.2		All parts of the device should be in good condition and show freedom to move. Have the switch manually operated and verify that it will open the drive motor circuit. Common devices include a block that is held in tension by the drive chain that activates the switch when tension is lost, or a plate that depresses a switch when the drive chain strikes it.	
1.3		For moving walks installed under A17.1–1990 and later editions.	
1.3.1		Verify that the moving walk cannot be started by the starting switch until the device is manually reset.	
1.4		Units installed under A17.1b–1995 and later editions.	
1.4.1		When a manual reset is required for, turn the power off and then back on, and then try the start switch to check that the device will not reset. Also, some indication that the device has been activated needs to be provided.	
1.5		If the drive motor is attached to a gear reducer by means other than a continuous shaft, coupling, or toothed gearing, check that the device provided will apply the brake if the motor becomes disconnected from the gear reducer. Have the switch manually operated and verify that all operating mechanisms are present, clean, lubricated, and in good condition.	
1.6		Moving walks installed under A17.1–1990 and later editions.	
1.6.1		Verify that the moving walk cannot be started by the starting switch until the device is manually reset.	
1.7		Units installed under A17.1b–1995 and later editions.	
1.7.1		When a manual reset is required for, turn the power off and then back on, and then try the start switch to check that the device will not reset. Also, some indication that the device has been activated needs to be provided.	
2		Frequency 	
2.1		Mandated interval 12 months.	
3		A17.2 Requirements 	
3.1		Item: 10.6.2	

Task Name	8.6.8.15.6 Broken Drive-Chain Device	Scope:	MW	
Notes		
1		Program Procedures: 	
1.1		Manually operate the reverse stop switch to verify that all operating mechanisms are present and in good condition and that the device will open the circuits to the driving-machine motor and brake to stop an ascending moving walk from reversing its direction of travel.	
1.2		Moving walks installed under A17.1–1990 and later editions.	
1.2.1		Verify that the moving walk cannot be started by the starting switch until the device is manually reset.	
1.3		Units installed under A17.1b–1995 and later editions.	
1.3.1		When a manual reset is required for, turn the power off and then back on, and then try the start switch to check that the device will not reset.	
1.4		Also, some indication that the device has been activated needs to be provided.	
1.5		There are several different types of devices that are used (friction reversal devices, speed monitoring, etc.). Therefore, the type of device will dictate the testing procedure. If the device cannot be manually operated, a written procedure must be provided by the person or firm performing the tests.	
2		Frequency 	
2.1		Mandated interval 12 months.	
3		A17.2 Requirements 	
3.1		Item: 10.7.2	

Task Name	8.6.8.15.8 Broken Step-Chain or Treadway Device	Scope:	MW	
Notes		
1		Program Procedures: 	
1.1		Manually operate the broken treadway devices to verify that each will interrupt power to the driving machine and brake.	
1.2		Visually inspect each device to verify that they are in position to operate and that either will activate when the connecting means breaks between pallets or belt.	
1.3		Moving walks installed under A17.1–1990 and later editions.	
1.4		Verify that the moving walk cannot be started by the starting switch until the device is manually reset.	
1.5		Units installed under A17.1b–1995 and later editions.	
1.5.1		When a manual reset is required for, turn the power off and then back on, and then try the start switch to check that the device will not reset.	
1.5.2		Also, some indication that the device has been activated needs to be provided (fault finder, etc.).	
2		Frequency 	
2.1		Mandated interval 12 months.	
3		A17.2 Requirements 	
3.1		Item: 10.8.2	

Task Name	8.6.8.15.9 Step Upthrust Device	Scope:	MW	
Notes		
1		Program Procedures: 	
1.1		Escalators installed under A17.1b–1980 and later editions and those required to comply with A17.3.	
1.1.1		Have the operation of the step upthrust device tested as follows:	
1.1.1.1		With the escalator running down, apply an upthrust force to a step to resist leveling as it enters the lower curve. This should stop the escalator.	
1.1.2		If this will not operate the upthrust device, it should be checked more closely during the internal inspection described in Item 8.9.2 and a meter should be used to verify that the safety circuit is opened when the upthrust device operates.	
1.2		Escalators required to comply with A17.3 that have smooth risers.	
1.2.1		Test the operation of the upthrust at both the upper and lower curves.	
1.3		Test the lower curve with the escalator running down and the upper curve with the escalator running up. This may require two pair of pliers gripping on both sides at the front of the step tread.	
1.4		While the steps are removed (Item 8.12.2), manually move the mechanism and visually inspect the components of the upthrust device. Visually examine the upthrust tabs on each step for damage, alignment, and attachment (see Fig. 8.9.2).	
2		Frequency 	
2.1		Mandated interval 12 months.	
3		A17.2 Requirements 	
3.1		Item: 7.9.2 & 8.9.2	

Task Name	8.6.8.15.10 Missing Step or Pallet Device	Scope:	MW	
Notes		
1		Program Procedures: 	
1.1		Moving walks installed under A17.1b–1989 and later editions.	
1.1.1		Test the missing pallet device by running the moving walk with a pallet missing on the underside of the moving walk.	
1.1.2		The device must stop the moving walk before the gap resulting from the missing pallet emerges from the combplate.	
1.1.3		Moving walks installed under A17.1–1990 and later editions.	
1.1.4		Verify that the moving walk cannot be started by the starting switch until the device is manually reset.	
1.1.5		Units installed under A17.1b–1995 and later editions.	
1.1.5.1		When a manual reset is required, turn the power off and then back on, and then try the start switch to check that the device will not reset. Also, some indication that the device has been activated needs to be provided.	
2		Frequency 	
2.1		Mandated interval 12 months.	
3		A17.2 Requirements 	
3.1		Item: 10.10.2	

Task Name	8.6.8.15.11 Step or Pallet Level Device	Scope:	MW	
Notes		
1		Program Procedures: 	
1.1		Moving walks installed under A17.1–1990 and later editions that are equipped with pallets and trail wheels.	
1.1.1		Visually inspect the pallet level devices at each end and on both sides to verify that it is in place and able to function. Have the switch manually operated to verify that it will open the safety circuit and stop the moving walk.	
1.2		Moving walks installed under A17.1–1990 and later editions.	
1.2.1		Verify that the moving walk cannot be started by the starting switch until the device is manually reset.	
1.3		Units installed under A17.1b–1995 and later editions.	
1.3.1		When a manual reset is required for, turn the power off and then back on, and then try the start switch to check that the device will not reset. Also, some indication that the device has been activated needs to be provided.	
2		Frequency 	
2.1		Mandated interval 12 months.	
3		A17.2 Requirements 	
3.1		Item: 10.11.2	

Task Name	8.6.8.15.12 Steps, Pallet, Step or Pallet Chain, and Trusses	Scope:	MW	
Notes		
1		Program Procedures: 	
1.1		Have at least half of the pallets removed, then move the remaining pallets to one end of the moving walk.	
1.2		Visually inspect the drip pans, undersides of pallets, trusses, roller tracks, chains, handrails, and the interiors of balustrades, skirts, and newels to verify that they are present, in good condition, clean of dirt and rubbish, and free of oil and combustibles.	
1.3		Visually inspect for any damage to the fire-resistive material on the moving walk enclosure.	
1.4		Visually inspect the chains for lubrication and build-up of dirt and grease. Lack of lubrication may be indicated by rouge (red rust deposits) on the side plates of the links.	
1.5		Moving walks installed under A17.1–1978 and later editions.	
1.5.1		Verify that cast iron links are not used on.	
1.5.1.1		Have a small hole drilled (in a low stress area) and observe the drill cuttings.	
1.5.1.2		If the cuttings are a fine powder, cast iron is indicated.	
1.5.1.3		If the cuttings are shavings, then the links are not cast iron.	
1.6		Check the operation of any moving walk pallet chain tension devices. If they are of the automatically operated “tension-weight” type, verify that the truss is provided with a positive means to retain the weights in the truss if the weights are released.	
1.7		Move the remaining pallets to the opposite end of the moving walk and inspect the other half in the same manner.	
2		Frequency 	
2.1		Mandated interval 12 months.	
3		A17.2 Requirements 	
3.1		Item: 10.12.2	

Task Name	8.6.8.15.13 Handrail Safety Systems	Scope:	MW	
Notes		
1		Program Procedures: 	
1.1		Examine the handrail drive systems to ensure that all chains, pulleys, gears, rollers, and belts are present and in good condition. The operation should be free of excessive noise and slack, which indicates wear.	
1.2		For moving walks installed under A17.1b–1989 through A17.1b–1992.	
1.2.1		Test the operation of the stopped handrail device.
Have the handrail motion sensor mechanically disconnected while the unit is off and then run the unit, or grab the handrail and stall it while the moving walk is running.
Verify that the alarm sounds immediately and the moving walk stops within 15 sec.	
1.3		Moving walks installed under A17.1–1993 and later editions.	
1.3.1		Check the operation of the handrail speed monitoring device. An alarm must sound immediately if the speed of either handrail deviates from the step speed by 15% or more; and the unit must shut down if the speed deviation is continuous for 2 sec to 6 sec.	
1.3.2		If holding the moving handrail cannot activate the device, then it will be necessary to activate the device by another means (disconnecting the speed sensor, changing dip switch settings on the controller, etc.).	
1.3.3		Verify that the unit cannot be started until the device is manually reset.	
1.4		For units installed under A17.1b–1995 and later editions.	
1.4.1		Turn the power off and then back on and then try the start switch to check that the device will not reset.
Also, some indication that the device has been activated needs to be provided.	
1.5		Moving walks installed under A17.1b–1992 and later editions.	
1.5.1		Test the operation of the handrail entry device by having a soft object that will not damage the unit inserted between the handrail and hand guard.	
1.5.2		After the unit stops, verify that it cannot be restarted with the key switch until the device has been manually reset.	
1.5.3		The device need only operate in the direction of the handrail travel.	
1.5.4		Units installed under A17.1a–1997 and later editions.	
1.5.4.1		 The device must operate regardless of the direction of travel of the handrail where an opening is created in the balustrade to prevent entrapment.	
1.5.5		Units installed under A17.1b–1995 and later editions.	
1.5.6		When a manual reset is required, turn the power off and then back on and then try the start switch to check that the device will not reset. Also, some indication that the device has been activated needs to be provided.	
1.6		For moving walks installed to A17.1-2000 and later editions, the person or firm maintaining the equipment must provide a written checkout procedure and demonstrate that the handrail speed does not change when a retarding force, up to the maximum required by Code, is applied opposite to the direction of travel.
Note that it may be easier to retard the handrail motion when the handrail is traveling in the down direction (i.e., the retarding force will oppose the handrail drive system).	
2		Frequency 	
2.1		Mandated interval 12 months.	
3		A17.2 Requirements 	
3.1		Item: 10.11.2	

Task Name	8.6.8.15.11 Step or Pallet Level Device	Scope:	MW	
Notes		
1		Program Procedures: 	
1.1		Moving walks installed under A17.1–1990 and later editions that are equipped with pallets and trail wheels.	
1.1.1		Visually inspect the pallet level devices at each end and on both sides to verify that it is in place and able to function. Have the switch manually operated to verify that it will open the safety circuit and stop the moving walk.	
1.2		Moving walks installed under A17.1–1990 and later editions.	
1.2.1		Verify that the moving walk cannot be started by the starting switch until the device is manually reset.	
1.3		Units installed under A17.1b–1995 and later editions.	
1.3.1		When a manual reset is required for, turn the power off and then back on, and then try the start switch to check that the device will not reset. Also, some indication that the device has been activated needs to be provided.	
2		Frequency 	
2.1		Mandated interval 12 months.	
3		A17.2 Requirements 	
3.1		Item: 10.13.2 & 9.3.2	

Task Name	8.6.8.15.14 Heaters and Outdoor Units	Scope:	MW	
Notes		
1		Program Procedures: 	
1.1		Moving walks installed under A17.1b–1989 and later editions.	
1.1.1		Heaters are required for only if treadways are subject to snow or freezing rain. Check that heaters are operational. The heaters may be located inside the units.	
2		Frequency 	
2.1		Mandated interval 12 months.	
3		A17.2 Requirements 	
3.1		Item: 9.18.2	

Task Name	8.6.8.15.15 Permissible Stretch in Escalator Chains	Scope:	MW	
Notes		
1		Program Procedures: 	
1.1		Have at least half of the pallets removed, then move the remaining pallets to one end of the moving walk.	
1.1.1		Visually inspect the drip pans, undersides of pallets, trusses, roller tracks, chains, handrails, and the interiors of balustrades, skirts, and newels to verify that they are present, in good condition, clean of dirt and rubbish, and free of oil and combustibles.	
1.1.2		Visually inspect for any damage to the fire-resistive material on the moving walk enclosure.	
1.1.3		Visually inspect the chains for lubrication and buildup of dirt and grease. Lack of lubrication may be indicated by rouge (red rust deposits) on the side plates of the links.	
1.1.4		Moving walks installed under A17.1–1978 and later editions.	
1.1.4.1		Verify that cast iron links are not used.	
1.1.4.2		Have a small hole drilled (in a low stress area) and observe the drill cuttings.	
1.1.4.3		If the cuttings are a fine powder, cast iron is indicated.	
1.1.4.4		If the cuttings are shavings, then the links are not cast iron.	
1.2		Check the operation of any moving walk pallet chain tension devices. If they are of the automatically operated “tension-weight” type, verify that the truss is provided with a positive means to retain the weights in the truss if the weights are released.	
1.3		Move the remaining pallets to the opposite end of the moving walk and inspect the other half in the same manner..	
2		Frequency 	
2.1		Mandated interval 12 months.	
3		A17.2 Requirements 	
3.1		Item: 10.12.2	

Task Name	8.6.8.15.16 Disconnected Motor Safety Device	Scope:	MW	
Notes		
1		Program Procedures: 	
1.1		If the driving machine is connected to the main drive shaft by a chain, check the broken drive chain device to verify that it will apply the main shaft brake and stop the drive machine if the drive chain parts.	
1.2		All parts of the device should be in good condition and show freedom to move.	
1.3		Have the switch manually operated and verify that it will open the drive motor circuit.	
1.4		Common devices include a block that is held in tension by the drive chain that activates the switch when tension is lost, or a plate that depresses a switch when the drive chain strikes it.	
1.5		Moving walks installed under A17.1–1990 and later editions.	
1.5.1		Verify that the moving walk cannot be started by the starting switch until the device is manually reset.	
1.6		Units installed under A17.1b–1995 and later editions.	
1.6.1		When a manual reset is required for, turn the power off and then back on, and then try the start switch to check that the device will not reset. Also, some indication that the device has been activated needs to be provided.	
1.7		If the drive motor is attached to a gear reducer by means other than a continuous shaft, coupling, or toothed gearing, check that the device provided will apply the brake if the motor becomes disconnected from the gear reducer.	
1.8		Have the switch manually operated and verify that all operating mechanisms are present, clean, lubricated, and in good condition.	
1.9		Moving walks installed under A17.1–1990 and later editions.	
1.10		Verify that the moving walk cannot be started by the starting switch until the device is manually reset.	
1.11		Units installed under A17.1b–1995 and later editions.	
1.11.1		When a manual reset is required for, turn the power off and then back on, and then try the start switch to check that the device will not reset. Also, some indication that the device has been activated needs to be provided.	
2		Frequency 	
2.1		Mandated interval 12 months.	
3		A17.2 Requirements 	
3.1		Item: 10.6.2	

Task Name	8.6.8.15.17 Response to Smoke Detectors (6.1.6.8 or 6.2.6.7) (Items 8.15 and 10.15)	Scope:	MW	
Notes 		
1		Program Procedures: 	
1.1		Units installed under A17.1a–1994 and later editions.	
1.1.1		When smoke detectors are provided that will shut down a running unit, verify that the emergency stop button alarm will sound and the unit does not shut down for at least 15 sec. The unit may be tested by activating the smoke detector or by other means.
CAUTION: If the sensing system is connected to a central fire alarm system, notify proper authorities before activating.	
2		Frequency 	
2.1		Mandated interval 12 months.	
3		A17.2 Requirements 	
3.1		Item: 10.15.2	

Task Name	8.6.8.15.18 Comb-Step or Comb-Pallet Impact Device	Scope:	MW	
Notes		
1		Program Procedures: 	
1.1		Units installed under A17.1b–1992 and later editions.	
1.1.1		Have the combplate impact devices tested as follows:	
1.1.1.1		Have a vertical force applied to the center front edge of the combplate until the device trips.	
1.1.1.2		Record the force required to trip the device and verify the unit will not start until manually reset.	
1.1.1.3		Have a force applied in the direction of travel at the front center of the combplate, increasing the force until the device trips.	
1.1.1.4		Record the force required to trip the device and verify the unit will not start until manually reset.	
2		Frequency 	
2.1		Mandated interval 12 months.	
3		A17.2 Requirements 	
3.1		Item: 9.7.2	

Task Name	8.6.8.15.21	Scope:	MW	
Notes 		
1		Program Procedures: 	
1.1		Each moving walk shall be equipped with inspection controls not accessible to the general public during normal operation to provide constant pressure operation during maintenance, repair, or inspection by means of a manually operated control device.	
1.2		General Requirements	
1.2.1		Switches for transferring the control of the moving walk to inspection operation shall be provided or a switch shall be provided at each landing in a portable control station; the switch(es) shall function as follows:	
1.2.1.1		be through a contact that shall be positively opened mechanically and whose opening shall not depend solely on springs	
1.2.1.2		be manually operated	
1.2.1.3		be labeled “INSPECTION”	
1.2.1.4		have two positions, labeled “INSPECTION” or “INSP” and “NORMAL” or “NORM”	
1.2.1.5		when in the “INSPECTION” position, it shall cause the movement of the moving walk to be solely under the control of constant pressure operating devices at that landing or in that portable control station	
1.2.1.6		be arranged so that if more than one inspection transfer switch is in the “INSPECTION” position, then all constant pressure operating devices at all locations shall be inoperative	
1.2.1.7		be protected against accidental contact	
1.2.2		Constant pressure operating devices shall	
1.2.2.1		allow movement of the moving walk only by constant application of manual pressure	
1.2.2.2		be distinctly recognizable from indications on the device as to the direction of travel controlled	
1.2.2.3		be protected against accidental contact	
1.2.2.4		be located so that the moving walk treadway surface is within sight	
1.2.3		A stop switch conforming to 6.2.6.3.12 shall be provided adjacent to the constant pressure operating devices.	
1.2.4		When portable control stations are used, the cord length shall not exceed 3000 mm(120 in.) in length.	
1.2.5		Plug-in Portable Control Station. A plug-in portable control station shall be permitted provided that	
1.3		either a transfer switch conforming to 6.2.6.2.2(a)(1)(a), (a)(1)(b), and (a)(1)(c) is complied with, or when plugged in, the moving walk shall automatically transfer to inspection operation	
1.3.1		when the switch, if provided, is in the “INSPECTION” position, or when the control station is plugged in, it shall cause the movement of the moving walk to be solely under the control of constant pressure operating devices contained in the portable unit	
1.3.2		the plug-in portable control station is stored at the upper landing machinery space.	
2		Frequency 	
2.1		Mandated interval 12 months.	
3		A17.2 Requirements 	
3.1		Item: 6.2.6.2.2	

Task Name	8.6.8.15.23 Seismic Risk Zones 2 or Greater	Scope:	MW	
Notes		
1		Program Procedures: 	
1.1		Check the operation of the seismic switch where provided.	
2		Frequency 	
2.1		Mandated interval 12 months.	
3		A17.2 Requirements 	
3.1		Item: 9.20.2	

Escalator & Moving Walks Start-up
8.6.11.6 Escalator or Moving Walk Start-up	
8.6.11.6.1	
Escalators and moving walks shall be started only by authorized personnel (see 1.3) trained in compliance with the procedures specified in 8.6.11.6.2 through 8.6.11.6.5.	
8.6.11.6.2	
The following procedure shall be utilized when starting an escalator or moving walk:	
(a) Prior to starting the unit, observe the steps or pallets and both landing areas to ensure no persons are on the unit or about to board. Run the unit away from the landing.	
(b) Verify correct operation of the starting switch.	
(c1) Verify correct operation of the stop buttons.	
(c2) Observe steps stop within the distance on the daily stopping distance check sign (usually one step length or less).	
(d) Verify correct operation of each stop button cover alarm, if furnished.	
(e) Visually examine the steps or treadway for damaged or missing components; combplates for broken or missing teeth; skirt or dynamic skirt panels and balustrades for damage.	
(f) Verify that both handrails travel at substantially the same speed as the steps or the treadway, are free from damage or pinch points, and that entry guards are in place.	
(g) Visually verify that all steps, pallets, or the treadway is properly positioned.	
(h) Verify that ceiling intersection guards, anti-slide devices, deck barricades, and caution signs are securely in place.	
(i) Verify that demarcation lighting is illuminated, if furnished.	
(j) Check for uniform lighting on steps/tread not contrasting with surrounding areas.	
(k) Verify that the safety zone is clear of obstacles and that the landing area and adjacent floor area are free from foreign matter and slipping or tripping hazards.	
(l) Check for any unusual noise or vibration during operation.	
(m) Perform the daily stopping distance check. (DR247-11)	
If any of these conditions are unsatisfactory in 8.6.11.6.2(a) through (m), the unit shall be placed out of service. Barricade the landing areas and notify the responsible party of the problem.	
8.6.11.6.3	
Escalators and moving walks subject to 24 h operation shall be checked daily by authorized personnel.	
8.6.11.6.4	
A record of authorized personnel trained as specified in 8.6.11.6.2 shall be kept on the premises where the escalator(s) or moving walk(s) or both is located and shall be available to the authority having jurisdiction.