1. The single-arm elevator and the double-arm  elevator should be used in couple. It has to used in couple. The match links: the lentgh < 4,5m, the match error < 4mm the lenght > 4,5 m, the match error < 6mm.

2.   They should be packed in couple, and not be separated in transportion and deposited.

3.  Right installation: ensure the ends the side be installed in correct position. The link can swing in certain range and shouldn’t be block.

4.  The actual load should not exceed the working load limit.
5.   Check the diameter and the leght when use. Reject when the diameter vary.
 

6. Keep them clean, no impact on them.
7.   In transportation, the should be moistureproof and fasten firmly the products to avoid being damaged in transportation.
8.  Stock in dry, ventilation, non-corrosion.