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Main switch on the back
4 Service Plan
Only the pre-filter is changed by the customer, the interval is three months. To determine when the
filter needs to be changed, the unit has an internal timer. When the pre-filter needs to be changed, a
message appears on the display.
4.1 Pre-filter exchange
The door for the prefilter is opened and the frame is pulled out together with the old prefilter. The
dirty pre-filter is packed in a plastic bag and disposed of in the trash. The new pre-filter is placed in
the frame with the blue side down. Then push the frame back into the unit and close the door.
Caution: Dirt has collected in the pre-filter during operation.
collected in the prefilter. Wear respiratory protection when changing the
prefilter. Do not shake the prefilter and wash your hands thoroughly afterwards.
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blue side
The unit is connected to the mains at the rear.
The unit can be switched on and off with the main switch.
When switched off, the unit does not need any power.
When it is switched on, the unit always requires a small
standby current.
When the pre-filter has been replaced, the corresponding message
message can be confirmed in the display. The internal timer is reset.
The unit can be operated for a few days even though the pre-filter
due for a pre-filter change. For the optimum service life of the unit and
hygiene, the Interwall must be maintained.
