Filter Operation and Troubleshooting
Noise reduction / secondary air
The inlet and the surface water intake connected to it in particular have to be checked for tightness
and adjusted according to the aquarium water level. In case of this being impossible due to technical
reasons, seal the surface water intake in order to prevent secondary air from getting into the filter.
Venting the filter system
Remove the backflow hose (conducting the water from the filter into the tank) from the aquarium and
place it inside a clean bucket placed on a level lower than that where the filter is on. Leave the hose
within the bucket and start the venting pro cess by using the button to manually operate the pump.
Make sure that both inlet and outlet flow adjusters are set to “open” and enable a maximum flow of wa-
ter. Once there are no more bubbles visible, seal the hose with your finger and reinstall it in order for
the pump to continue its operation.
Leakage after installation or cleaning
A slight leakage after the filter installation or filter cleaning indicates an issue with the tightness of the
connection between hose connector and filter head.
The adjusters connecting the hose to the filter head are equipped with two O-rings ensuring the tight-
ness of the filter head. In case of these gaskets being polluted, displaced or damaged, tightness can
no longer be ensured and water may enter the filter head. Water entering the filter head will usually es-
cape through the claps located on the filter head sides, responsible for securely connecting it to the
casing of the filter. In order to solve this problem, simply check the integrity of the O-rings and ensure
that they are clean and have been placed accordingly. It is also important to ensure that the seating of
the O-rings is free from dirt as the formation of algae or sand accumulated can impair the tightness of
the gaskets.
Make sure to regularly clean this area in order to prevent the growth of algae or the accumulation of
sand and other particles. Thorough cleaning is thereby required in order to ensure that the parts in
question are completely clean and capable of preventing leakage.
Check the condition of the O-rings located inside the adjusters if thorough cleaning will not stop leak-
age from occurring at the clasps. In order to do so, the adjusters have to be opened.
© by WilTec Wildanger Technik GmbH
Item 50369, 50370
Page 8
http://www.WilTec.de
http://www.aoyue.eu
11 2020
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