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8. Maintenance
8.1 Maintenance by the user
The maintenance to be carried out by the
user is restricted to regular cleaning and
exchanging the filter. The filter only needs to
be cleaned if the text "FIL" appears in the
display. The filters have to be changed
annually. The unit should not be operated
without a filter.
1
Switch the unit off at the operating panel
by pressing and holding the "OK" and "-"
buttons down at the same time for 3
seconds. Open the filter shutter.
2
Pull the filter out and replace it. Take note
of the direction in which the filter was
pulled out.
3. Insert the filter in the same way in which
the previous one was pulled out.
4
Close the filter shutter and switch the unit
on at the operating panel by pressing and
holding the "OK" and "+" buttons down at
the same time for 3 seconds.
5
The filter status display has to be reset
after cleaning or exchanging the filter by
pressing the "OK" button for 1 second.
The display flashes briefly to confirm and
then reverts to operational mode.
27
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