Davey
Hydraulic Efficiency Loss
Pump performance has gradually decreased over months; longer run times needed to keep pool clean.
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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.
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Possible Causes
Impeller wear or erosion, Build-up of scale or biofilm in impeller and volute, Partially blocked internal passages, Aging motor running below rated speed
How to Fix / Troubleshooting
Safety first: Isolate power and close valves before disassembling the pump.
Step-by-step checks:
- 1. Service filter and baskets: Ensure the decline is not due to a dirty filter or baskets.
- 2. Inspect impeller and volute: Remove the wet end cover and check for scale, calcium deposits, or worn impeller vanes. Clean with appropriate descaling solution if needed.
- 3. Replace worn impeller: If the impeller shows significant wear or erosion, replace it with a genuine Davey impeller for your model.
After reassembly, re-prime and check flow and pressure.
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Repair Difficulty
Medium
3/5
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