Why Does My Pool Pump Keep Sucking Air?
If your pool pump keeps sucking air, it can be caused by several issues. Here are the most common reasons and solutions:
1. Air Leak in the Pump or Plumbing
Cause: Air can enter the pump if there are cracks or loose connections in the pump, hoses, or plumbing system. This is often the most common cause.
Solution: Check all connections for leaks, including the pump lid, hoses, and O-rings. Make sure the pump lid is properly tightened and the O-ring is intact and lubricated.
2. Low Water Level
Cause: If the water level in your pool is too low, the pump can suck air instead of water. This can happen if there has been significant evaporation, or the pool water level was lowered for maintenance.
Solution: Ensure the water level is at least halfway up the skimmer opening. Add water to bring the level back up.
3. Clogged or Dirty Skimmer or Pump Basket
Cause: If your skimmer or pump basket is clogged with debris, it can cause a loss of prime and let air into the system.
Solution: Clean the skimmer basket, pump basket, and the skimmer line to ensure there's no blockage.
4. Faulty Pump Lid or Seal
Cause: The pump lid or seal may not be sealing correctly, allowing air to enter the pump.
Solution: Check the pump lid for any cracks or damage. Also, inspect the seal (O-ring) and replace it if necessary.
5. Blocked or Dirty Filter
Cause: A clogged filter (especially if it's a sand or cartridge filter) can restrict water flow, causing air to be sucked into the system.
Solution: Backwash or clean the filter to restore normal flow. Be sure to follow the manufacturer’s guidelines for maintenance.
6. Suction Line Blockage
Cause: A blockage or partial clog in the suction line (the line that brings water into the pump) can cause air to be drawn in.
Solution: Inspect the suction line for any visible obstructions, and clear them if necessary.
7. Priming Issues
Cause: If the pump is not priming properly, it could result in air being pulled into the system.
Solution: Try manually priming the pump by filling the pump basket with water before turning the pump on.
8. Pump Position
Cause: If your pump is located higher than the pool, air can get sucked into the system because the pump is not primed properly.
Solution: Ensure your pump is installed at the correct level and follow proper installation guidelines to avoid air being drawn into the system.
9. Faulty Check Valve
Cause: A check valve is meant to prevent water from flowing backward into the system. If it's faulty, air can enter the pump.
Solution: Inspect and replace the check valve if it's broken or malfunctioning.
10. Pump Running Dry
Cause: If the pump has been running with low or no water, it can result in air getting into the system.
Solution: Turn off the pump immediately and check the water supply, ensuring it’s properly primed and no air is trapped.
Steps to Fix:
Turn off the pump to prevent damage.
Inspect all connections for air leaks or cracks.
Check the water level and ensure it’s sufficient.
Clean the baskets and remove any debris.
Inspect the O-rings, pump lid, and seals for any wear or damage.
Check the filter and clean it if necessary.
If you are unable to identify the issue or fix the problem on your own, it may be time to give Mick’s Pool Care a call for further investigation.