AquaScape Ultra 400 Instructions page 7

Replacing the Impeller
• The impeller assembly is the only moving part on the
Ultra Water Pump and will experience wear and tear. If
™
you've cleaned the pump, as described above, and still
experience poor pump performance, it is most likely time
to replace the impeller. Replacing the impeller is extremely
easy. Replacement impeller kits are available through your
local Aquascape dealer.
1. Note the orientation of parts in the photo below.
The replacement impeller kits include all parts shown.
Make sure to remove all of the original parts from
the inside of the pump before installing the replacement
impeller kit.
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Centering Bushing
Bearing Washer
2. A centering bushing is required on both ends of the
impeller shaft; one bushing is located inside the pump
and an outer bushing sits in the water chamber cover.
3. Slide the fi rst interior bearing washer onto the ceramic shaft.
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4. Place the ceramic impeller shaft into the pump, checking
to be sure the centering bushing seats inside the pump.
5. Carefully slide the impeller back onto the shaft. Use
caution: the impeller assembly is magnetic and will be
pulled forcefully back into the pump.
aquascapeinc.com | CAN 1-866-766-3426 |
Impeller
Ceramic Shaft
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US 1-866-877-6637
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6. Install second outer bearing washer over the
impeller shaft.
7. Replace water chamber cover containing the impeller
shaft centering bushing by sliding it over the impeller shaft
and then rotating it clockwise to lock it
into place over the tabs on the pump housing.
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8. Replace the pre-fi lter sponge and fi lter screen by
snapping them back onto the pump housing.
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