9
Replacing the Fresh Air O
2
-Filtersystem
washable HEPA
Open the filter box lid. Remove O
2
-Filter (and
clean if necessary). Remove the fresh air activat-
ed charcoal filter by the tabs. Insert new filter
and O
2
-Filter. Close filter box lid.
Cleaning the O
2
-Filter
Open the filter box lid and remove the O
2
-Filter.
Wash out the soiled filter insert only under
warm, running water. Do not user any cleaner,
and, as far as possible, do not touch the delicate
filter surface. Tap the filter frame gently to
remove any remaining water. Insert O
2
-Filter
and close the filter box lid.
Changing the Hygiene Filter
Hygiene filter, 2 layer with white fleeced
fabric
Open the dust compartment lid and remove the
hygiene filter frame. Remove the used hygiene
filter. The filter can be disposed of in the house-
hold rubbish without problems. Insert the new
hygiene filter with the white surface towards
the grille, slide the filter frame into the retain-
ing bracket.
Upgrading to Fresh Air Activated Charcoal/
Ultra/O
2
-Filter and Fresh Air Micro-Filter
(depending on model)
If you want to upgrade your appliance to one of
these filter systems, please proceed as follows:
Open the filter flap and remove the microfilter.
Remove the lower grill and the insulation mate-
rial underneath it.
Also remove the upper grill with the aid of a
screwdriver. Insert the new filter system and the
fresh air microfilter, close the filter lid.
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