compartment lid into the housing until the latch
engages.
9.3.2 Change fine filter
The fine filter needs changing when it has gone dark, but in any event after no more than
1000 operating hours. In the latter case, the filter change indicator
appears in the
display.
Acknowledge the message by pressing the alarm
acknowledgement key . The filter change symbol
then appears permanently in the status line.
Proceed as follows to change the fine filter:
1. Press on the latch of the filter compartment lid and
take it off.
2. Replace the fine filter with a new fine filter
WM 15026. Dispose of the old filter in normal
domestic waste.
3. Put the filter compartment lid into the cutout in the
housing bottom edge first. Then push the filter
compartment lid into the housing until the latch
engages.
Reset filter change indicator
After you have changed the fine filter, you must reset the filter change indicator. This is
necessary even if the filter was changed before 1000 operating hours expired so the filter
change symbol was not in the display.
1. To reset the filter change indicator, press the menu key
and use the the dial to select Filter change from
the patient menu. Press the dial to call up the Filter
change menu.
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