OPERATING AND INSTALLATION MANUAL HEAT PUMP COMBI UNIT PKOM4 PAGE 41
USER
GENERALSPECIALIST PERSONNEL
15.3 CHECK AND CLEANING OF FANS Cleaning may be required depending on the
fans’ level of soiling.
Maintenance and cleaning work is restrict-
ed to the fan housing and rotor.
Use a soft brush to clean the rotor. The fan
housing can be cleaned with a vacuum
cleaner.
The motor housing may be
opened and works performed on
the motor's electrical compo-
nents by the manufacturer of the fan only.
If the fan is defective in any way, it must be
replaced with a new, original fan.
Be absolutely sure to avoid caus-
ing damage to the fan blades. Do
not remove or damage existing
balancing weights, since this may
cause increasing noise and vibrations while
the rotor is running.
15.4
CHECK AND CLEANING HEAT
EXCHANGER AND CONDENSATE
TRAYS
Use only lukewarm water to clean the
supply air and exhaust air parts of the heat
exchanger.
Do not expose electrical compo-
nents such as expansion valves,
solenoids and frequency convert-
ers to water! Under no circumstances use
aggressive cleaning agents. Blowing out
with compressed air may destroy the heat
exchanger.
Preferably use a moist cloth to clean the
condensate trays.
Fig.: Heat exchanger and condensate trays
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