COMB PLATE LEFT NAT. ALUM., OTIS XO508

Escalator Comb Plate Installation Instructions

1. Pre-Installation Safety & Preparation
2. Cut off the escalator main power supply and hang a safety warning sign to prevent accidental startup.
3. Prepare matching comb plate, fixing bolts, gaskets, wrench and protective gloves.
4. Inspect the new comb plate for broken teeth, cracks or deformation; confirm the model fits your escalator.
5. Clean the comb support base, remove dirt, rust and debris that may affect fitting.
6. Remove Damaged Old Comb Plate
7. Locate the fixing bolts on both sides of the old comb plate.
8. Unscrew all bolts and take down the worn comb plate slowly.
9. Check the support bracket and safety contact switch under the plate for damage or failure.
10. Replace deformed brackets or faulty safety switches before installing new parts.
11. Install New Comb Plate
12. Place the new comb plate flat on the support base, align the comb teeth with step grooves perfectly.
13. Insert gaskets and tighten fixing bolts evenly on both sides to avoid uneven stress.
14. Fine-tune the plate position to keep a uniform gap between comb teeth and step surface.
15. Reconnect and test the comb plate safety switch to guarantee normal trigger function.
16. Inspection & Test Run
17. Manually turn the escalator driving wheel to circulate steps fully.
18. Check friction or collision between steps and comb teeth; adjust the plate position if any scraping occurs.
19. Reinstall all escalator side covers after passing manual inspection.
20. Switch on power and run the escalator with no load for 10 minutes, recheck the comb plate operation status.
21. Safety Precautions
22. Only professional certified escalator maintenance technicians can perform installation.
23. Power must be completely cut off before any disassembly and assembly work.
24. Do not use comb plates with cracked or missing teeth to avoid safety hazards.
25. Stop operation immediately if abnormal scraping, jamming or safety switch alarm appears during testing.