CMA Dishmachines
Motor or Pump Bearing Wear
High-pitched squealing or whine during operation.
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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
Worn wash pump bearings, Misaligned motor shaft, Debris contacting rotating parts, Failing rinse pump bearings
How to Fix / Troubleshooting
Safety first: Disconnect power before touching any rotating components.
Step-by-step checks:
- Isolate the source: Listen carefully to determine if the noise is from the wash pump, rinse pump, or another rotating part.
- Inspect for rubbing: Check that wash and rinse arms are not rubbing against the tank or racks.
- Check pump play: With power OFF, gently move the pump shaft or impeller. Excessive play or roughness indicates bearing wear.
- Plan replacement: Schedule replacement of the noisy pump or motor assembly before it fails completely.
When to call a technician: Bearing and motor replacements require proper tools and alignment; contact a CMA service technician.
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Repair Difficulty
Medium
3/5
Required Part
Wash Pump Motor
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