AllPondSolutions 400-HO, Manual

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It is vital that o-rings are regularly inspected and replaced
as the rubber watertight seal will perish over time, which
may cause your canister to leak. Before replacing your o-
rings, ensure they are well lubricated.
O-rings
Impeller and Shaft
A clogged impeller is often the primary cause of all filter
faults, so it is extremely important to clean and inspect
your impeller every month to ensure it is functioning
correctly and remove any debris. Keeping the impeller
clean will improve the performance of your filter and
lengthen the life of the motor. The impeller itself is a
perishable part and will be subject to wear and tear
overtime. As a result, it is also very important to replace
your impeller and ceramic shaft annually.
Switch off your filter at the mains and unplug the unit.
Pour out water from inside the HO+ filter.
Remove your HO+ filter from your aquarium.
Detach the motor from the filter unit by gently twisting
the motor 90 degrees to release from the filter body.
To clean the impeller, gently lift the blue impeller
from the base of the motor and clear any debris or
residue. When reinserted into the motor, the impeller
‘fan’ piece should rotate half way and stop. If it can
rotate completely 360 degrees then the impeller is
damaged and will need replacing.
Re-insert the motor back into the filter unit, and gently
twist the motor 90 degrees to lock back into place.
You should hear the motor click into place.
Return your filter into your aquarium and switch on.
Note: Handle the ceramic shaft with care as this can
break very easily during the cleaning process.