1. Chain block non-overload use is prohibited other than the power of human action.

2. In the use, be sure that parts intact, transmission parts and lifting the chain oiled, idling situation to normal.

3. Chain block checked before lifting the upper and lower hook is hanging in prison. Weight suspended from the tip is strictly prohibited errors such operations. Lifting chain should be hung vertically, without twisting the wrong link, double chain hook frame shall turn next.

4. The operator should stand on the same plane with the bracelet round hands pulled the chain, the bracelet round clockwise, you can make the weight increase; reverse hands pull chain, heavy objects can be slowly decreased.

5. In lifting weights, strictly prohibited in any work under heavy loads or walk to avoid injury.

6. In the lifting process, regardless of weight up or down, hands pulled the chain, the force should be uniform gentle, not too much force, so as not to beat or hand chain ring.

7. Chain block the operator found to be greater than the normal hand-pull tension, they should immediately stop using. Hand chain to prevent wear and tear.