Common faults of water pumps
please see the table below:
| Symptom | Possible Cause | Solution |
| Mechanical seal leakage | Impurities in the medium | Improve media filtration and replace or clean the filter (core) promptly. |
| Air mixed in the medium | Increase exhaust flow and install automatic exhaust valves in the pipeline. | |
| Pump inlet pressure too low, causing cavitation | Improve inlet conditions and increase inlet pressure. | |
| Flow rate deviation, pump head too high | Adjust the pump's operating point to an appropriate value. | |
| Incompatibility between the medium and the mechanical seal material, improper mechanical seal selection | Replace the appropriate type of mechanical seal. | |
| Improper flushing or cooling pipe installation | Re-adjust the installation. | |
| Pump noise and vibration | Air entering the pump | Install an automatic air vent at the highest point in the pipeline |
| Cavitation in the pump | Improve inlet conditions, increase inlet pressure, and reduce the outlet valve | |
| Foreign matter in the pump | Disassemble the pump and remove foreign matter | |
| Lack of oil in the pump or motor bearings | Lubricate more thoroughly and replace bearings if necessary | |
| Poor coupling alignment | Realign and replace damaged coupling components if necessary | |
| Motor temperature too high | Ambient temperature too high | Increase pump room ventilation |
| Pump flow rate deviation, causing motor overcurrent | Control the pump operating point within a reasonable range | |
| Voltage too low or too high | Improve power supply voltage | |
| Motor bearing failure | Lubricate or replace bearings | |
| Motor fan failure | Troubleshoot fan failure | |
| Coupling misalignment | Realign |
Maintenance of water pump system