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8.2 Maintenance by the installer
The maintenance to be carried out by the
installer covers cleaning the heat exchanger
and and the fans. Depending on the
operating conditions, this maintenance work
needs to be done every three years.
1
Switch the unit off at the operating panel
by pressing and holding the "OK" and "-"
buttons down at the same time for 3
seconds and switch off the mains power
supply. Open the filter shutter.
2
Pull the filter out.
28
3
Remove the front cover.
4
Pull the heat exchanger out. Be careful
not to damage the foam components in
the unit.
5
Clean the heat exchanger with warm
water (max. 55 °C) and standard washing
up liquid. Rinse off the heat exchanger
with warm water.
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