12
Preventive maintenance
Introduction
In order for the unit to run reliably, it is necessary to perform preventive maintenance by
changing the filter and cleaning the unit.
Changing the filter Change the filter when the filter alarm is displayed in the control panel (the LED blinks
yellow) and the acoustic filter alarm beeps (once an hour).
+
Step
Action
1
Disconnect power to the unit
2
Open the top door and pull out the door sup-
port
3
Remove the insulation panels in front of the
filters.
Note that the smooth side of the panel faces
the front door
4
Replace the filters and dispose of the used fil-
ters in an environmentally responsible manner
(flammable material).
Ensure that the arrows on the filters are facing
downward!
The filter opening must only be used for
filters!
5
Replace the filter insulation panels so that the hard, smooth side faces out,
and the soft side faces in towards the filters
6
Reconnect the power supply
7
Reset the filter alarm by pressing and holding
the button for 2 seconds, and then close the
door again.
Ensure that the LED on the control panel lights
up green
Continued overleaf
Flashing
G4 (exhaust)
G4/F7 supply air
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