What is the problem when the trolley of the tower crane does not move?
1 Answers
The immobility of the tower crane trolley may be caused by the motor burning out, the trolley fuse in the distribution panel blowing, the control line of the trolley transfer switch in the control panel breaking, or a phase loss due to a broken trolley power line. Here is additional information: Transfer switch damage: If there is simply no forward or backward movement, it may be caused by a damaged transfer switch or contactor. Failure of the lifting mechanism to start: Check for wiring errors in the control circuit by comparing with the wiring diagram. If the fuse is blown, check if the fuse capacity is too small and replace it with a larger one if necessary. Short circuit, grounding, or open circuit in the motor winding: Locate the short or open circuit and repair it.