Ring chain electric hoist control failure how to solve?

Since the electric chain hoist car comes with moving can be realized in the vertical beams of the left and right, particularly widespread use in the field, greatly improving the work efficiency, but in the course will inevitably encounter problems, such as malfunctioning and so is the issue of the recent customers reflect First, the following summary for everyone to solve electric chain hoist operation failures common methods:
1, the power supply voltage is too low.
Solution: measured voltage value is less than 10% more than the scale of the supply voltage.
2. Check whether the power of the original wire phase wrong as wrong can lead to start the protective effect of the phase can not be manipulated.
Workaround: swap two phases of the power cable to each other.
3, chain hoist control circuit fuse burned.
Solution: Check and replace the fuse accurate
4, power supply or blown fuse no fuse breaker tripped.
Solution: Check whether the current demand, replace a fuse or restarting a suitable no-fuse switches.
5, wire or power line control circuit break or connected.
Workaround: poor contact wire breakage and repair or replacement.
6, electric hoist motor sound, but it did not rotate.
Solution: Check the accuracy of the motor phases - repair and make insulation action.
7, the emergency switch is pressed.
Solution: Make sure the emergency switch is pressed reasons.
8, contactor coil shorted.
Solution: Replace the contactor
9, bad contacts.
Workaround: Manually operated hoist, chain hoist if normal operation, represents the control coil wire or poor contact, find the bad location and repair.