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Maintenance measures
130
Resetting the op-
erating hours
counter
The maximum permitted number of operating hours is preset in the
controls for all filters. After a filter has been changed, the operating
hours counter must be reset.
Open the menu as follows:
button
Additional settings
Filter maintenance
Coarse filter
and/or
HEPA filter
The operating-hours counter must only be reset when the filter
has been changed.
Coarse filter replaced?
Fine filter cleaned?
Yes
No
Yes
No
-
Yes
The operating-hours counter will be reset for the new filter.
-
No
The counter will not be reset.
Use the
and
arrow buttons to select an option.
Confirm your selection with
OK
.
Filter life remaining
10 h
The remaining operating hours for this filter type are shown in the dis-
play.
Confirm the message with
OK
.
Then you will be asked if you wish to reset the operating-hours
counter.