Certikin Stiff Seals and Deposits After Lay‑Up

Pump performance drops significantly after winter or long period of inactivity.

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

Scale build‑up on impeller and volute, partially seized mechanical seal, corrosion on motor shaft (for older models)

Safety: Isolate power and close valves before dismantling.

Manual rotation: Try to rotate the shaft by hand before starting after long lay‑up. If stiff, do not force with power.
Clean wet end: Disassemble the Certikin pump wet end and descale the impeller and volute using a suitable descaling solution compatible with pump materials.
Inspect seal: Check the mechanical seal for sticking or damage and replace if necessary.

Medium 3/5

Certikin mechanical shaft seal

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