Davey
Loose Impeller or Worn Diffuser Components
Pump makes a rattling or clicking noise, especially at start-up.
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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 not fully tightened on shaft, Broken diffuser vanes, Loose debris in volute, Worn impeller eye or wear ring
How to Fix / Troubleshooting
Safety first: Isolate power and close valves before disassembling the wet end.
Step-by-step checks:
- 1. Remove wet end cover: Follow Davey service instructions to remove the volute/diffuser cover.
- 2. Inspect impeller: Check that the impeller is firmly attached to the shaft and not wobbling. Tighten if necessary.
- 3. Check diffuser: Inspect the diffuser for broken pieces or wear; replace if damaged.
- 4. Remove debris: Clear any loose objects from the volute.
Reassemble carefully, ensuring all gaskets are correctly seated.
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Repair Difficulty
Medium
3/5
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