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Seite 8
Noise reduction/ external air
Especially the suction intake /inlet and the connected suction surface must be
checked for tightness and adjusted according to the water level of the aquarium.
In case this is not possible due to aquarium technical reasons, seal the whole
suction surface so that no external air can get into the filter.
De-aerating/ evacuating air
Take the return-flow hose that conducts the water from the filter to the tank and
lead it into a clean bucket that is placed below the filter. Lead the hose into the
bucket and carry out the dearation process (evacuate the air) by activating the
manual pump. Please make sure that the possible maximal flow is adjusted to
the inlet-outlet connector. As soon as no air bubbles can be seen, seal the hose
with a finger und and install it again as intended on the return pipe at the top
edge of the aquarium.
Leakage after installation or cleaning
In case of a slight leakage still persists after the installation or the cleaning of
the filter, this indicates that the problem is most likely the sealing between the
hose connector adaptor and the filter head (cover lid)
The plug-in adaptor, to which the hoses are connected, has on the lower side
two O-rings that must seal the connection inside the filter lid. If these O-Rings
are dirty, displaced (out of place) or damaged they cannot seal properly anymore
and water escapes in the filter lid/cover of the aquarium filter.
The leak point is then the lowest point of the filter cover/lid and appears typically
at the lateral clamping points that connect the cover lid with the filter tank/canis-
ter.
The remedy is here as simple as the failure itself. You have to rinse and check
the O-rings. Make sure that the spots where the O-rings have to be inserted and
positioned are free of dirt. On these particular spots algae formation can appear
and impair or damage the O-rings’ sealing if no regularly cleaning is carried out.
This problem can also appear in case of a new installing because of sand, for
instance.
Filter operation and problem solving
