31
6.6. Inspection/Cleaning valves
Check the valves regularly (approximately once every 3 months)
for contamination. If soiled, clean the valves.
Clean the valves as follows.
In case of slight soiling, wipe the valves with a slightly damp cloth.
If necessary, use a solution of a mild detergent such as washing-
up liquid or all-purpose cleaner.
In case of strong adhesion of dirt, remove the valves completely
from the canal.
a) Remove the foam sealing tape.
b) Completely immerse the valves in a solution of a mild
detergent (e.g. dish soap or all-purpose cleaner). If necessary,
the valves can be cleaned in the dishwasher.
c) Remove the valves with a cloth or soft brush.
d) Dry the valves. Place the foam sealing tape back on the valve.
e) Place each valve back into the duct of origin.
6.7. Inspect and clean fans
Go through the following steps when inspecting and cleaning the
fans:
a) Disconnect the ventilation unit from the power supply.
b) Remove the connection cap with power cable from the
ventilation unit.
c) Remove both filter holders.
ä
Warning!
The frost channel must remain free at all times! Nothing may be
placed on the frost channel.
ä Attention
!
Pay attention to protruding duct sections when removing or
replacing valves and gratings. These can be very sharp!
ä Attention
!
When cleaning, do not adjust the setting of the valves and put the
valves back in the duct of origin.
