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4.3. FILTER CHANGE
18
Here as well, how frequently the filter needs to be exchanged is determined by the operating duration, set
operating level and degree of impurities in the air.
A built-in operating hours counter incl. visual FILTER display alerts the operator when the filter needs to be
changed. (For important notes, see point 3.1 Filter function)
Filter replacement
1
4
7
RESETTING the filter exchange timer
10
CAUTION:
Press the filter button during normal operation briefly to display the completed operating hours. First the
thousands are displayed, then hundreds, then tens, then the ones. The example below shows the display
for 2802 operating hours:
Cleaning the particle sensor
13
2
5
8
5 sec!
11
14
3
6
9
12
NOTE:
Clean the door covering of the
particle sensor with a vacuum
cleaner or hair dryer.
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