16
16
Preheater
Inspect the preheater for dirt and make sure that the
connectors and the heater are intact.
Fan
Check the two fan wheels for dirt. If they are dirty, they can
be cleaned with a brush, bottle washer or similar.
Supply air and exhaust air valves
Clean the valves by wiping them with a dry cloth.
Make sure that the valve does not rotate, thus causing a
change in the air volume.
Important!
When reinstalling the front plate on the ventilation unit, do
not use power tools to tighten the screws, as this may
result in damage to the threaded connections. Carefully
tighten all the screws until the front plate is firmly fitted on
the cabinet of the ventilation unit.
