Onga General Wear / Efficiency Loss

Pump performance has gradually declined over months; longer run times needed to keep pool clean.

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

Eroded impeller, worn diffuser or wear ring, partially blocked internal passages, aging motor losing torque

Safety: Isolate power before disassembly.

Internal inspection: Open the Onga pump wet end and inspect the impeller, diffuser, and internal passages for wear or scale buildup. Clean and descale as needed.
Replace worn parts: Fit a new impeller, diffuser, and wear ring if significant wear is visible.
Motor check: Listen for bearing noise and check current draw. An aging motor may be less efficient and benefit from replacement.

Restoring internal components often returns the pump close to original performance.

Medium 3/5

Onga impeller and diffuser kit

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