1. Symptom: The iron remover cannot be excited. Approach:
 Check if the main circuit contactor is damaged and if the control circuit fuse is damaged.
 Check that the rectifier diode is in good condition. Use a multimeter to measure the forward and reverse resistance of each diode in turn and compare them. 1. Failure symptoms: The iron remover cannot be excited. Approach:
 Check if the main circuit contactor is damaged and if the control circuit fuse is damaged.
 Check that the rectifier diode is in good condition. Use a multimeter to measure the forward and reverse resistance of each diode in turn, and perform a comparative analysis to determine whether the diode is intact.
 Check whether the DC main circuit fuse is burned, and whether the fuse circuit breaker is actuated.
Check if the disk separator is in working position.

2. Symptom: The iron remover trips. Approach:
Check whether the wiring in the control cabinet is good and whether the insulation is normal.
Check whether the resistor is normal.
Check whether the insulation of the cable is normal and whether the water in the junction box is damp or not. If necessary, perform the drying treatment.

3. Fault phenomenon: limit alarm. Treatment method: Check whether the travel limit and the proximity switch cooperate well. The distance should not be too far or too close. When the distance is too far, the time limit can not operate correctly. If it is too close, it will damage the proximity switch.