393930-2 Rev 0: 01.04.2020
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12.3 Maintenance and cleaning of rotary heat exchanger
This must be done by a qualified person.
If the unit is placed high under a ceiling, then it might be an advantage to get help from another person to
hold the rotor exchanger in correct position untill all four “safety” screws are loosen.
Disconnect the 5-poled plug , and then unscrew those four “safety” screws that are holding the rotor
exchanger in place.
(Sketch shows AHU-300 HH, but the principle
is the same for AHU-300 HV and AHU-400
HH/HV)
Can be pulled out of the ventilation unit without the
need for any tools.
Rotor exchanger can easily be removed for cleaning by
unscrewing 12 screws that hold it together.
Clean parts with mild soap and water.
Do not expose the rotor motor or connector to
moisture/water.
The exchanger you also can clean with mild soap
and water. Do not use ammonia-containing
detergent, as this will prey on and discolor
aluminum in rotary heat exchanger. Flushed with
hand shower and blow gently clean with
compressed air.
Ensure that all 12 screws are tightened
sufficiently so that they do not come
loose during operation.
Preferably use a screwdriver to tight the screws. If
use of electrical screwdriver, make sure that you
use low torque to prevent destroying the threads in
the sheet metal parts.
To make sure that the drive belt can adjust itself
into correct position you must rotate manually the
exchanger some turns. Then insert back into the
ventilation unit. Be sure that rotor exchanger is
properly inserted in all the guides inside the unit. If
not, this can lead to vibration in the system and
internal air leakage in the unit. Make sure that all
four “safety” screws are tightened so that there is
no danger that they loosen during operation.
Summary of Contents for AHU 200B
Page 1: ...User manual and Installation Guide InoVent AHU 200 700 ...
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