Davey
Cavitation Due to High Suction Lift or Restriction
Pump is unusually loud with a cavitation-like crackling noise, especially at high speed.
Advertisements
Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
Advertisements
Possible Causes
Suction line too long or undersized, Partially closed suction valve, Blocked skimmer or main drain, Pump running at excessive speed for plumbing design
How to Fix / Troubleshooting
Safety first: Cavitation can damage the impeller over time. Reduce speed while diagnosing.
Step-by-step checks:
- 1. Open suction valves fully: Ensure maximum water supply to the pump.
- 2. Clean suction points: Clear skimmer and main drain of debris.
- 3. Reduce speed: On variable speed Davey pumps, lower the speed until the noise subsides.
- 4. Review installation: If the pump is installed far above water level or with long, narrow suction lines, consult an installer about reconfiguring the plumbing.
Advertisements
Repair Difficulty
Medium
3/5
Advertisements