• Before service, maintenance or repair begins, the fan
must be tension free and the impeller must have
stopped.
• Consider the weight of the fan when removing or
opening larger fans to avoid jamming and contu-
sions.
• The fan must be cleaned when needed, at least once
per year to maintain the capacity and to avoid unba-
lance which may cause unnecessary damages on the
bearings.
• The fan bearings are maintenance-free and should
be renewed only when necessary.
• When cleaning the fan, pressure wash or strong dis-
solvent must not be used. Cleaning should be done
without dislodging or damaging the impeller
.
• Make sure that there is no noise from the fan.
H O W T O H A N D L E
54
The fan is easy to open for
cleaning and service with the
swing-out design.
Loosen the screws a few
turns, without removing
them.
Turn the motor bracket to the
right so the screws can go
through the key holes. Open
the motor bracket.
When closing, turn the motor
bracket to the left so the
screws go into the smaller
part of the keyholes.
Tighten the screws.
OPEN
OPEN
CLOSE
CLOSE
O P E R A T I O N
Before starting, make sure that:
• the current does not exceed more than +5% of what
is stated on the label.
• the connecting voltage is in b6% to –10%
of the rated voltage.
• no noise appears when starting the fan.
M A I N T E N A N C E
• The fan must be transported in its packing until in-
stallation. This prevents transport damages, scrat-
ches and the fan from getting dirty.
• Attention, look out for sharp edges and corners.
•
Attention!
Temperatures up to 85°C can be pre-
sent on the controller housing (only for EC motor).
•
Waiting period of at least 3 minutes!
(only for
EC motor) Because of internal capacitors, danger of
death exists even after switching off the device
through directly touching the energized parts or due
to parts that have become energized due to faults.
The controller housing may only be removed or
opened when the power line has been switched off
and a period of three minutes has elapsed since swit-
ching it off.
• Avoid extreme heat or cold (temperature range for
storage and transport.
• Avoid prolonged storage; we recommend a maxi-
mum of one year (consult the manufacturer before
starting if stored for longer).