. . . Air in the filter?
Cause Solution
Filter location. The top edge of the pump head should be at least 10 cm beneath the
surface of the water. It is better to place it underneath the aquarium.
Air is being sucked in via the Check that hose connector is fitted properly, and may be check
hose installation. whether hoses leak.
Additional air supply (membrane pump). Do not install diffuser in the vicinity of the suction pipe.
Filter media heavily soiled. Clean filter media.
Filter media have been placed in net bags. Never put long-term filter media in net bags or nylon stockings.
. . . The pump causes loud operating noise?
Cause Solution
Ceramic sleeve not or incorrectly installed. Correctly install or, if required, replace the ceramic sleeve.
Ceramic axis broken. Replace the ceramic axis.
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Storage
1. Uninstall the device from the aquarium.
2. Clean the appliance.
3. Store the appliance in a frost-proof place.
Disposal
When disposing of the appliance, heed the respective statutory regulations. Information on the disposal of elec-
trical and electronic appliances in the European Union: Within the European Union, disposal of electrically ope-
rated appliances is governed by national regulations that are based on the EU Directive 2012/19/EU on waste
electrical and electronic equipment (WEEE). The appliance may no longer be disposed of with the municipal or
household waste. The appliance will be accepted free of charge at municipal collection points or recycling cen-
tres. The product packaging is made up of recyclable materials. Dispose of them in an environmentally respon-
sible manner and take them for recycling.
10 Decommissioning and disposal
See page 213
11 Technical data
See page 214
12 Spare parts
Cause Solution
Water is not circulating properly. Take filter into operation by priming (as described in the instructions).
Make sure that the water runback (delivery side) is above the surface
of the water during filling so that air is optionally bled from the device.
Too many accessories installed Connected accessories reduce filter performance. Check and remove
on the hose system. unnecessary accessories or operate via a separate water system.
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