Elevator Compensation Chain Daily Maintenance and Care

1. The traction sheave groove and traction steel wire rope should be clean, free of severe grease, and evenly tensioned.

2. The speed limiter groove and speed limiter steel wire rope should be clean, free of severe grease.

3. The transmission steel wire rope in the car door system should be cleaned and adjusted according to the manufacturer's requirements.

4. The wear of the traction sheave groove should not exceed the requirements of the manufacturer.

5. The wear and number of broken wires of the traction steel wire rope and compensation steel wire rope should not exceed the requirements.

6. The traction steel wire rope head assembly nuts should be tightened and not loose.

7. The wear and number of broken wires of the speed limiter steel wire rope should not exceed the requirements of the manufacturer.

(I) The suspension steel wire rope and compensation steel wire rope should be scrapped if any of the following occur:

1. Cage-like distortion, core extrusion, twisting, partial flattening, or bending appears.
2. Broken wires are scattered throughout the steel wire rope, with more than 4 broken wires in any single strand within a lay length; or broken wires are concentrated in a part or strand of the steel wire rope, with a total number of broken wires greater than 12 within a lay length (for a 6-strand wire rope) or greater than 16 (for an 8-strand wire rope).
3. The diameter of the worn steel wire rope is less than 90% of the nominal diameter of the steel wire rope. For other types of suspension devices, the wear and deformation should not exceed the scrapping indicators set by the manufacturer.
4. The steel wire rope shows severe rust.

(II) The rope head assembly should be judged as scrapped if any of the following situations occur and are irreparable:

1. The cone sleeve or rod appears cracked.
2. The wedge-type rope head appears cracked or welded open.
3. The self-locking wedge-type rope set cannot tighten the steel wire rope, and the steel wire rope slips within the wedge set.
4. The threads of the rope head screw and nut are damaged, and the nut cannot be tightened.