10.2.2
Fans
9
The condition of the air filters must be checked regularly. Very
dirty filters must be replaced immediately; depending on
outdoor air pollution, filtersgenerally need replacing bi-annually.
9
Only original replacement filters of the specified quality class
may be used.
9
Never operate the ventilation unit without air filters for the
outdoor and extract air!
9
If ventilation units are shut down for extended periods, air filters
should be replaced for hygienic reasons prior to starting up
again!
9
Before removing the air filters from the unit, release the filter
stentering frames by pulling forward. Only then may the air
filters be gently lifted out and replaced.
When inserting the new filters, ensure they seal well and that
clamping between air filter and filter stentering frame is
adequate, in order to avoid high filter bypass leakage.
When replacing the air filters, avoid soiling the unit and its
components. Dirty air filters must be immediately and suitably
disposed of. It is advisable to package the air filters in an
airtight container immediately after removal to avoid
contamination of the ventilation system and the unit.
Observe air direction indicated on the air filter!
Use a soft brush to clean the fan blades and the fan
housing. Use a vacuum cleaner to remove the dust under
the fan.
Avoid damaging the fan blades. Do not remove or damage
existing balancing weights, since this may unbalance the
fan, increasing noise and vibrations.
A fan with this kind of damage must be replaced with a
new, original fan.
O P E R A T I N G A N D I N S T A L L A T I O N I N S T R U C T I O N S L G
7 5 0 - L G 6 0 0 0
P A G E 4 7
