Use explosion-proof chain hoists note the following nine factors

1, the operation must be scrutinized before proof  manual hoist   individual components and parts, including each link of the chain, in good time before use. In equipment shaft, gear daub amount of grease to reduce wear and improve extended equipment life.
2, are not allowed to use overload proof chain hoists.
3, lifting chain requires vertical hanging weights. Chain link between individual shall have the wrong button.

4 Pull the zipper, the zipper direction must be in the same plane with the chain sprocket.
5, is strictly prohibited stayed chain block s to prevent card chain.
6, pulling force must be smooth to avoid jumping chain or card chain. When they find driving difficulties, should promptly check the reason, not deadlift, but not allowed to add people afterburner, so pull off a chain or pin.
7, use a tripod, the tripod must maintain relative spacing, feet between applications rope ties a rope on the ground when the contact time, pay attention to prevent workers tripping.
8, lifting height shall not exceed the standard value,wire rope winch to prevent the chain pull off the pin, causing the accident.
9, lifting personnel are forbidden to do any work under heavy loads and walk around to avoid accidents resulting in personal injury.