Why the water pump trips during operation

It is inevitable that the pump will encounter some special conditions after a long working time, such as tripping. If this problem occurs, how should we solve it, and what are the reasons?

Eliminate the tripping phenomenon of the water pump. After removing the structural fault of the switch, check that the cable, secondary circuit wiring, all relays and their settings are normal according to the conventional method, check whether the restart is successful, and change the operation on the control panel. This phenomenon will still occur, which needs further inspection.

In order to determine whether the water pump trips, observe the changes of each meter during the closing of the switch to confirm the cause of the challenge, test the voltmeter to monitor the microcomputer trip circuit, check whether the equipment can operate normally through the ammeter, monitor the thermal protection circuit through the ammeter, and test after starting the water pump to see whether the start is tripped. If the pointer deflection direction of the milliammeter is observed, whether the trip is caused by improper protection, It is easy to find the cause.