How to Fix a Continuously Running Self-Priming Pump?
1 Answers
It is likely that there is air leakage in the water valve of the pressure well. The best solution is to install a separate pipe for the self-priming pump into the well. If this is not feasible, install a valve at the bottom of the pressure water device and close it when the device is not in use. This prevents air from entering the pipeline, allowing the self-priming pump to function properly. Solutions for self-priming pump motor malfunctions: 1. Pump does not work after power is connected: This could be due to issues with the power plug or wiring, such as insufficient power or a short circuit. 2. Difficult to start or noise during startup: During inspection, gently move the fan blade with a small bamboo stick. If the motor runs normally, the starting winding may be damaged. Replace the capacitor with one of the same capacity or repair the starting winding. If the motor is stuck, it may be due to faults in the motor or pump head, such as bearing damage or impeller blockage. 3. Motor runs but at a slow speed, with overheating and a burning smell: This could be caused by a motor short circuit. Open the motor to assess the damage and repair accordingly. 4. Excessive noise and vibration during operation: This is often due to bearing damage or improper fit between the bearing and the motor casing. Disassemble the motor for inspection. If the bearing is damaged, replace it. If the bearing "runs outer circle," notch the pump casing's fitting surface. If the bearing "runs inner circle," notch the worn part of the motor shaft. For severe wear, use welding followed by turning to repair.
