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Pump Troubleshooting Guide: Common Faults, Causes, and Solutions
IHF Fluoroplastic Alloy Chemical Pump Single Stage
This guide provides a clear overview of frequently encountered pump operating faults, their likely causes, and practical corrective actions. It is designed for industrial operators and maintenance technicians to diagnose problems efficiently and restore normal pump performance.
1. Pump Fails to Discharge Liquid
Possible causes:
- Incorrect motor rotation direction
- Insufficient liquid stored inside the pump casing
- Air leakage entering the suction pipeline
Recommended solutions:
- Correct the motor rotation direction
- Refill the pump with sufficient liquid
- Eliminate air leaks and fully vent the suction pipeline
2. Pump Fails to Prime (Cannot Draw Liquid)
Possible causes:
- Foot valve not opened or blocked
- Suction lift too high or suction pipeline too long
- Debris obstructing the suction line
Recommended solutions:
- Inspect, correct, or replace the foot valve
- Reduce suction lift or shorten the suction pipeline
- Remove debris and clear blockages
3. Insufficient Pump Flow
Possible causes:
- Impeller damaged or worn
- Blockage at the suction or discharge section
- Insufficient motor power or low rotational speed
Recommended solutions:
- Replace the impeller
- Remove obstructions in the suction or discharge passages
- Inspect the motor and increase the pump speed
4. Insufficient Pump Head (Low Pressure)
Possible causes:
- Impeller damaged or worn
- Air present in the transported medium
- Insufficient pump speed
Recommended solutions:
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