1.Do not increase staff or pull the chain. The most important thing not to do in all operations is to suddenly increase the pull or call a few staff and pull the chain together. This operation is wrong, not only causing more damage to the equipment, but also causing harm to the staff. This may be a chain jamming or blocked chain.
2.Check the chain hoist if it is overload.
3.Check each part of the chain block carefully. As long as the user does the first two steps, the overall security of the chain block is guaranteed. Then, the overall performance of the device is checked to find out the cause of the failure.