How to Fix an Air Lock in a Water Pump
An air lock in a water pump prevents water from flowing correctly. Fortunately, there are several ways to resolve this common problem.
An air lock occurs when air becomes trapped within the pump's system, interrupting the continuous flow of water. This can be caused by a variety of factors, including:
- Initial Installation: Air might be trapped during the initial setup or after maintenance.
- Low Water Levels: Insufficient water in the supply tank can lead to air being drawn into the pump.
- Leaks: Leaks in the system can allow air to enter.
- Faulty Check Valves: A malfunctioning check valve can allow water to flow back, creating a vacuum and drawing in air.
Here are some effective solutions to fix an air lock:
1. Baiting the Pump with Water
This is a simple and effective method.
- Procedure: Take a container filled with water and directly connect the suction hose to this container. Turn on the pump and let it run for several minutes. This forces water into the system, displacing the trapped air. This method is mentioned in a December 2023 source.
2. Priming the Pump Through a Winterizing Port (RV Systems)
- Procedure: Fill the water tank. Then connect the fill hose to the winterizing port, open the valve, and send water to the pump inlet. Turn on the pump. This approach is noted in a Forest River Forums discussion from July 2021.
3. Disconnecting and Re-Connecting
- Procedure: Disconnect the discharge hose from the pump. Turn on the pump; you should see water coming out of the discharge port. Turn off the pump and reconnect the hose. This method was suggested in an Airstream Forums thread from December 2011.
4. Check Valves and Other Components
If the above methods fail, it's crucial to check for:
- Check Valve Function: A faulty check valve is a common culprit. Repair or replace as needed (suggested in an HVAC-Talk forum post from June 2017).
- Leaks: Inspect all connections and hoses for leaks allowing air ingress.
- Clogged Filters: A clogged filter can restrict water flow and indirectly contribute to air lock issues (mentioned in a JustAnswer plumbing Q&A).
Conclusion
Addressing an air lock usually involves simple troubleshooting steps. By systematically trying these solutions, you can restore proper water flow. Remember, if the issue persists after trying these techniques, consult a qualified plumber or technician for further assistance.
