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How to maintain escalators

- Sep 21, 2017 -

Escalator maintenance content and requirements

1 to understand the operation of escalators

Technical procedures: 

① to the party in charge of personnel, maintenance personnel and escalator driver, asked the operation of this escalator and failure conditions; 

② access to escalator emergency records.

Inspection standards: 

① access to escalator failure and repair records; 

② access to maintenance records and work visas.

2 Establish necessary maintenance safety measures

Technical procedures: 

① maintenance, you must first set the safety railings and "escalator is prohibited to use the maintenance of the" brand (up and down each one); 

② maintenance, if necessary, can cut off the power switch, and hung on the switch is being repaired 

(3) If the maintenance of the steps have been removed from the escalator, only to use the "maintenance box" to repair the speed of operation escalator jogging, steps are not allowed to stand; 

④ maintenance end, you must check the escalator Do not leave any debris and tools.

Inspection standards: 

① requirements railings and obstacles can be eye-catching and effectively prevent people from entering the scene; 

② to ensure that the escalator in the maintenance does not casually start; 

③ especially in the ladder when someone can cut off the power switch, if necessary lock.

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3 Prioritize emergencies

Technical procedures: in case of failure due to stop when the first troubleshooting.

4 ladder system maintenance

Technical procedures:

① remove the three maintenance stairs; 

② observe the step rails; 

③ check the cascade chain and tension; 

④ check the rung by one; 

⑤ see the step subsidence protection device; 

⑥ check the two sides of the step and the wheel gap.

Inspection standards

① smooth running, no abnormal noise; 

② step into the comb plate can be aligned center, comb teeth into the depth of the ladder meet the standard; 

③ check the distance of the pole is in line with the standard; The distance between the two sides of the step must be adjusted to the specified distance.

5 handrail system maintenance

(3) check the handrail belt with the entrance and exit; Steering wheel; 

⑥ check the armrest pulley group and roller; 

⑦ check the armrest with friction wheel; 

⑧ handrail with the table cleaning work.

Inspection standards: 

① observe the handrail belt, the next operation, whether in the middle of the mouth; 

② running speed and run the difference is consistent with the enterprise standards; 

③ check the handrail with no wire exposed and scar sources, and excluded; 

④ Whether the tension of the handrail with the enterprise standards, do not meet the adjustment can be; 

⑤ pulley group and roller must be running freely, smooth, no noise. Friction wheel wear.

6 Check the safety protection device

Technical instructions: 

① handrail with a broken safety switch; 

② skirt safety switch; 

③ cascade subsidence protection switch; 

④ cascade chain break chain switch; 

⑤ speed protection switch; 

⑥ handrail with entrance protection switch; 

⑦ comb plate safety switch; The main drive chain chain protection switch; 

⑨ non-operation reversal protection switch; 

⑩ step on the jump switch; 

⑾ off the wrong phase protection; 

⑿ thermal overload protection.

Inspection standards: 

① each safety switch must be performance *, sensitive, switch freely; 

② switch and gear distance in line with the enterprise product requirements.

7 Maintenance Adjust the transmission parts

Technical procedures: 

① reducer operating status check; 

② brake maintenance, the appropriate adjustment of the brake spring to ensure braking torque; 

③ sprocket inspection; 

④ main drive chain inspection; 

⑤ handrail chain maintenance.

Inspection standards: 

① reducer is smooth; 

② whether the abnormal noise; 

③ brakes with the wear and tear check; 

④ active sprocket and passive wheel wear; 

⑤ active transmission chain tension; 

⑥ latch is complete, there are No shedding; 

⑦ handrail transmission chain tension is consistent with the standards of the enterprise.

8 protection panels, inside and outside the cover, apron plate cleaning work (some units are Party A self)

Technical procedures: 

① armrest clean and clean; 

② protective panels bright and clean, can be washed with a clean cloth after cleaning with a dry cloth; 

③ inside and outside the cover seam formation, no gap; 

④ apron plate.

Inspection standards: 

① no garbage, no grease, no dust; 

② upper and lower ends of the security label intact; 

③ cover seams no obvious steps.

9 Check the control lighting system

① up and down the key switch; 

② upper and lower emergency stop switch; 

③ maintenance box and up and down maintenance socket; 

④ lighting control switch; 

⑤ overhaul lighting; 

⑥ armrest lighting and cascade clearance lighting.

Inspection standard: 

① the direction of the key switch and run the same direction; 

② emergency stop switch is valid; 

③ maintenance switch must be used when the key switch interlock; 

④ lamp, bulb shell without damage.

10 ladder cleaning work

Technical procedures: 

① in the demolition of the three maintenance stalls neutral, do the rail cleaning work; 

② with cotton cloth wipe the main and auxiliary rails, if garbage or hard dirt with a blade scraper.

Inspection standards: 

① main steps in the track on the track when the track without noise, no beating; 

② rail on the clean, no grease.

11 cascade cleaning work and overall inspection

Technical rules: 

① runway pedal and arc plate at no grease, dust; 

② runway alveeds intact; 

③ run the slider thickness to meet the standard; 

④ step main and vice round complete, non-destructive, smooth operation.

Inspection standards: 

① rungs must be intact, clean and no pollution; 

② runway main and auxiliary shaft diameter and bearing must meet the enterprise standards, no noise; 

③ runner slider wear in line with standards.

12 on the next room cleaning work

Technical procedures: 

① the upper and lower room should not be placed with the escalator has nothing to do with the items; 

② all machines, control cabinet clean no pollution, no water, oil accumulation, fouling; 

③ clear line, tied firmly, Parts of the friction phenomenon.

Inspection standards: 

① upper and lower engine room, cover plate, the front edge of the groove are clean no grease; 

② line, no broken, off line, peeling.

13 Lubricant replenishment and replacement

Technical instructions: 

① gear box lubricating oil level inspection; 

② refueling device inspection; 

③ cascade chain, drive chain, armrest drive chain of lubricating oil supplement; 

④ cascade slider and apron plate between the lubrication; 

⑤ all rotation, Active parts, easy to rust parts of the oiling work.

Inspection standards: 

① requirements of the added lubricating oil label accurate, excellent oil quality, the amount of oil appropriate; 

② motor, gear box running no noise, no abnormal heat; 

③ all the drive chain pin and ball parts are maintained with appropriate lubricants ; 

⑤ rotation, the activities of parts such as brake arm, pin, screw parts are no rust, dry lack of oil phenomenon.

14 end the end of the work

Technical procedures: 

① installed on the three maintenance steps; 

② test run; 

③ cover the upper and lower front cover; 

④ fill in the maintenance records and escalator maintenance cycle table; 

⑤ pay a unit to use, and apply for registration procedures.

Inspection standards: 

① complete delivery, clean, full-featured escalator; 

② form to fill clearly, maintenance of people, accept the signature, to receive correct.


① escalators must be specially trained by the qualified professional maintenance personnel.

Escalator maintenance content and requirements

② maintenance cycle is generally 1 to 2 weeks time (also according to the actual situation).

③ maintenance work mainly as follows: a. Wipe the parts, electrical components; b. Check the work of the mechanical and electrical parts; c. Need to lubricate the parts to be refueling.

④ medium maintenance: generally six months to once a year, maintenance cleaning replacement parts.

⑤ large maintenance: the general cycle of 3 years.

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