How to troubleshoot a pump?

The following faults usually occur during use of the pump:
1. The water pump leaks.
2. The pump does not operate.
3. There is abnormal sound when the pump works.
The exclusion method is:
1. Water leakage from the overflow hole below the water pump shaft is generally caused by wear of the water seal and poor sealing capacity. The water seal should be replaced.
2. Water leakage from the pump housing or gasket is caused by damage to the pump housing, gasket damage, or loosening of the fixing screws and should be repaired or replaced separately.
3. The pump does not operate and should be removed for inspection.
4. The abnormal sound of the water pump is generally caused by loose or lack of oil in the shaft bearing of the water pump. The retaining ring of the water pump shaft is not installed or not installed, the bearing oscillates, the back of the impeller collides with the water pump cover, and the resulting vibration of the pulley and the fan impeller is caused. Sounds. If the abnormal noise can not be eliminated through lubrication, it should be removed for maintenance. If the bearings, impellers and other mechanical parts are damaged, they need to be replaced with new ones.

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