Common Faults and Solutions of Electric Chain Hoist
Common Faults and Solutions of Electric Chain Hoist
Electric Chain Hoist is a very common tool. Many customers improperly operate during use, which will cause many problems. The solutions are as follows:
1. The phase of the electrical line is connected incorrectly, which causes the phase protection function to start, so it cannot be operated.
Solution: swap the power cords of the two phases with each other.
2. The fuse of the power supply has blown or the non-fuse switch has tripped.
Solution: Check whether the current demand is met, replace a suitable fuse or restart the no-fuse switch.
3. The fuse of the control circuit is burned out.
Solution: Check and replace the correct fuse.
4. The power cord or control circuit wire is broken or not connected properly.
Solution: Repair or replace the broken or poorly contacted wire.
5. The voltage of the power supply is too low.
Solution: Measure whether the voltage value is lower than 10% of the standard power supply voltage.
6. The motor makes a sound, but it does not rotate.
Solution: Check whether the motor phase is correct-repair and perform insulation actions.
7. The emergency switch is pressed.
Solution: Confirm the reason for pressing the emergency switch.
8. Bad contactor.
Solution: Manually operate the hoist. If the electric chain hoist operates normally, it means that the control coil or wire has poor contact-find out the position of the poor contact and repair it; if the electric chain hoist still cannot be operated by manual operation, then It is necessary to check whether the main power supply is normal. If the main power supply does not have a title, the contactor is defective and cannot output normally, and the contactor needs to be replaced.
