Weinmann VENTIlogic LS Instructions For Use Manual page 93

9.3.4 Change fan filter
Proceed as follows to change the fan filter.
1. Turn the device over so that the underneath points upwards.
2. Grasp the fan filter with your fingertips and pull it out of the opening.
1. To reset the filter change indicator, press the menu
and use the the dial to select Filter change
key
from the patient menu. Press the dial to call up the
Filter change menu.
2. The question Reset filter change? appears. Select
YES with the dial and confirm the selection by pressing
the dial.
If you want to cancel the process, select NO with the
dial and press the dial. The process is cancelled.
If you select and confirm YES with the dial, the
message Filter change reset!appears for approx. 3
seconds.
3. Take a new clean filter and put it in. Ensure that the
fan filter is straight and that the corners are not tilted
by the opening.
4. Turn the device back over so that the top points
upwards.
5. Dispose of the used filter with domestic waste.
Maintenance and safety checks
EN 93