In the beginning of the use of 12 months, the crane must be carried out regular safety and technical inspection, in addition to careful inspection of the crane’s cut parts. Load test should also be carried out.
The crane’s controller should be turned on gradually. Before the machinery completely stops running, it is forbidden to reverse the controller from the down position directly to the reverse position for braking, but it can be used to prevent accidents from happening.
When the crane motor suddenly stops or line voltage drops sharply, all controllers are pulled to zero position as soon as possible. The main switch of the driver’s room must be cut off. If there is a heavy load on the crane hook during a power failure, the driver and hooker should warn anyone not allowed to pass under the heavy load.