1: You need to carefully check whether the explosion -proof hand stretching the heavy chain is too much wear, corrosion, deformation and external damage.

2: Check whether the rotor of all rotors of the explosion -proof hand pulling the gourd is flexible, and the fastener must not be loose.

3: Check the wear and deformation of the hook. The hook should be harmful, corrosion, warp, and reversing.

4: Each transmission parts of explosion -proof hand stubburies should be checked regularly. The friction surface of the brakes must be kept clean and no oil is polluted to ensure reliable braking performance.

5: When using explosion -proof hand pour gourds, you should often apply lubricating oil when using heavy chains. You should not stick to the soil and other debris, so as not to bring into the heavy sprocket and deposit in the concave, affecting the meshing of the political party.

6: In the use of explosion -proof hands to stract the gourd, it should be placed in a dry place. It should be properly protected and properly properly protected and properly placed for a long time.