How to Repair a Deep Well Submersible Pump
A deep well submersible pump is an essential component of many water systems, particularly in rural areas where surface water sources may be scarce. These pumps are designed to operate underwater, pushing water to the surface from significant depths. Like any mechanical system, they can encounter issues that may require repair or maintenance. If you find yourself dealing with a malfunctioning deep well submersible pump, follow these steps to identify the problem and carry out necessary repairs.
Step 1 Safety First
Before attempting any repairs, it’s crucial to prioritize safety. Make sure to disconnect the power supply to the pump to avoid electric shock. Use appropriate safety gear, such as gloves and goggles, when handling any tools or mechanical parts.
Step 2 Diagnose the Problem
The first step in repairing your submersible pump is identifying the issue. Common problems include
- Pump Won't Start Check for power supply issues. Is the circuit breaker tripped? Is there a blown fuse? Ensure that the wiring is intact and that there are no loose connections.
- Pump Running Continuously This could indicate a problem with the pressure switch or a leak in the system. Inspect the pressure tank and lines for any signs of water loss.
- Low Water Output This might be due to a worn impeller, blockage, or if the water level has dropped significantly. You may need to remove the pump and check its components.
- Strange Noises Grinding, rattling, or other unusual sounds can signal mechanical issues such as worn bearings or misaligned parts.
Step 3 Removal of the Pump
If you determine that the pump needs to be removed for repairs, follow these guidelines
1. Drain the Well Before pulling the pump out, ensure that the well is drained to avoid flooding. 2. Disconnect the Pump Disconnect the electrical wiring and any piping connected to the pump. It’s helpful to take photos of the connections to ensure correct reassembly.
3. Pulling the Pump Use a pipe wrench or a winch to carefully pull the pump from the well. Be cautious to avoid damaging the pump or the well casing.
Step 4 Inspection and Repair
Once the pump is out, conduct a thorough inspection
- Check Cables and Connections Look for any signs of wear or damage in the electrical cables and connectors. - Inspect the Impeller and Diffuser Remove these components for cleaning and check for any cracks or wear. If they are damaged, they will need replacing.
- Examine the Motor If the motor is overheating or not functioning, evaluate the bearings and the rotor. Sometimes, replacing bearings can resolve the issue.
Step 5 Reassembly and Testing
After completing necessary repairs, it’s time to reassemble the pump
1. Reattach Components Reinstall the impeller, diffuser, and any other parts you removed. Ensure all seals are tight to prevent leaks.
2. Reconnect Electrical Wiring Use your earlier photographs to correctly reconnect the wires.
3. Lower the Pump Back Carefully lower the pump back into the well. Ensure it sits properly at the designated depth.
4. Power On and Test Turn the power back on and check the operation of the pump. Monitor for any unusual noises or malfunctions during the initial operation.
Conclusion
Repairing a deep well submersible pump can be a manageable DIY task if you approach it systematically. However, if you encounter significant issues or are uncomfortable performing repairs, it’s advisable to hire a professional. Regular maintenance and periodic checks can also prolong the life of your submersible pump and reduce the likelihood of future problems. Always remember, safety comes first, so don’t hesitate to call in the experts when needed!