Why Does My Submersible Pump Keep Tripping Out?

Submersible pumps are indispensable for various applications, from irrigation to water well systems. However, if your submersible pump keeps tripping out, it can be frustrating and disruptive. Understanding the common causes and effective solutions can help you restore optimal pump performance.

Common Causes of Tripping Submersible Pumps

There are several reasons why your submersible pump might keep tripping out. Below, we explore some of the most common causes and their respective solutions.

1. Overload

Overloading occurs when the pump is working harder than it should, leading to overheating. This can happen if the pump is undersized for the application.

Check Pump Sizing: Ensure the pump is properly sized for the application. An improperly sized pump can strain and potentially damage the motor. Monitor Water Flow: Verify that the pump is receiving adequate water flow, as insufficient water can cause overloading.

2. Electrical Issues

Electrical problems can also trigger the tripping of submersible pumps. These issues include voltage fluctuations and faulty wiring.

2.1 Voltage Fluctuations

Stable Power Supply: Ensure the power supply is stable and within the pump's voltage range. Fluctuations can cause tripping. Monitor Voltage: Use a voltage meter to check if the supply voltage is within the acceptable range for the pump.

2.2 Faulty Wiring

Inspect Power Cord: Check the power cord and connections for damage or corrosion. Damaged wiring can cause short circuits. Replace Faulty Components: If you notice damage, replace the faulty wiring or components to prevent further issues.

3. Blocked Intake

A blocked intake caused by debris can make the pump work harder, leading to overheating.

Regular Cleaning: Periodically check and clean the intake screen to ensure it is free from blockages. Remove Debris: If debris is present, disassemble the intake and clean it thoroughly.

4. Dry Running

If the pump is running without water, it can overheat and trip the circuit. Proper submersion is crucial for safe and effective pump operation.

Proper Submersion: Ensure the pump is properly submerged in water to avoid dry running. Check Intake: Verify that the intake port is not completely blocked or submerged incorrectly.

5. Faulty Components

Submersible pumps often contain several components that can fail individually, leading to tripping.

5.1 Capacitor Issues

Failing Capacitor: A faulty capacitor can cause the motor to draw too much current, leading to tripping. Check Capacitors: Regularly inspect the capacitors and replace them if necessary.

5.2 Pump Bearings

Worn Bearings: Worn bearings can create friction, causing the motor to overheat. Inspect and Replace Bearings: If the bearings are worn, consider replacing them rather than attempting repairs.

6. Thermal Overload Protection

Thermal overload protection is a safety feature that trips the pump when the motor overheats. Frequent tripping of this protection indicates a persistent issue.

Check Troubleshooting: Evaluate the condition of the pump and its components to identify the root cause. Consult a Professional: If the problem persists, it may be best to consult a professional for a more thorough diagnosis.

7. Improper Installation

Incorrect installation can also lead to operational issues, including tripping of the pump.

Follow Manufacturer Guidelines: Ensure that the pump is installed according to the manufacturer's guidelines. Double-Check Connections: Verify that all connections are secure and properly made.

Conclusion

Addressing the issues mentioned above can help prevent your submersible pump from tripping out frequently. Regular maintenance, troubleshooting, and following the manufacturer's guidelines are key to ensuring a reliable and efficient pump system.

Addressing Specific Issues

If the circuit trips, it typically indicates a problem with the wiring. However, if the motor just stops without tripping the breaker, the issue might be with the klixon, a tiny device that can be located within the motor windings.

Klixon and Motor Issues

Common issues with the klixon include:

A klixon failure can occur if there is junk, such as string or debris, wrapped around the impeller shaft. To fix this, disconnect the device first before cleaning the area around the impeller and shaft. Inspect the shaft for free rotation and address any bearing problems, as replacement is often the best solution.

By understanding and implementing these solutions, you can ensure your submersible pump operates efficiently and minimizes the occurrence of tripping.