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www.pond-planet.co.uk£91.19Visit shop Oase Aquamax Eco Classic 11500/12000C Impeller Assembly - 21900
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The Oase AquaMax Eco Classic Impeller Assembly is an essential maintenance component designed for pond owners using the AquaMax Eco Classic 11500 and 12000C pump models. This genuine replacement part is ideal for restoring lost flow rate or correcting motor noise caused by a worn or damaged rotor, offering a cost-effective alternative to replacing the entire pump unit. While it is built for long-term durability, please note that installation requires basic manual dexterity and internal access to the pump housing.
| Model Part Number | 21900 |
|---|---|
| Brand | Oase |
No, this part (MPN 21900) is designed specifically for the 11500 and 12000C models only.
No, most Oase AquaMax pumps use a tool-free housing design, though a standard screwdriver may be needed for specific housing clips.
The impeller should be replaced if you notice physical wear on the blades, persistent rattling, or a significant drop in flow rate.
The assembly focuses on the impeller and rotor unit; check your existing ceramic shaft for cracks or pitting when you replace the impeller.
The AquaMax Eco Classic is designed primarily for freshwater pond use; consult your manual if your specific water chemistry contains high mineral or salt concentrations.
Check the impeller chamber for debris or obstructions and ensure the new assembly is seated correctly on the shaft.
Verify that the impeller assembly is not obstructed and that the ceramic shaft is intact and properly aligned.
Ensure the power cable is connected and the impeller spins freely by hand before engaging the motor.
Before starting, always disconnect the pump from the electrical power supply to ensure safety. To install, remove the pump housing cover and carefully extract the old impeller assembly. It is recommended to clean the internal pump chamber of any sludge or debris before inserting the new assembly. This part is compatible strictly with the Oase AquaMax Eco Classic 11500 and 12000C. Regular cleaning of the pump intake screen will help protect this new impeller from premature wear caused by sand or gravel intake.
