Tuff Spas Circulation Pump Bearing or Cavitation Noise

Circulation pump is very noisy, rattling, or grinding during operation.

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.

Possible Causes

Worn bearings in Tuff Spas circulation pump, Air in circulation line, Debris in pump impeller, Pump mounted loosely to base

Safety: Turn off power before touching the pump or plumbing.

Step 1 – Check for air: Bleed the circulation pump union to remove trapped air. Restore power and listen again.
Step 2 – Inspect mounting: Ensure the pump is securely fastened to the equipment base and rubber mounts are intact.
Step 3 – Clean impeller: With power off and valves closed, remove the pump wet end and inspect the impeller for debris.

Persistent grinding or squealing indicates bearing failure; replace the circulation pump with a Tuff Spas-compatible unit.

Medium 3/5

Circulation Pump

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