8
FAULT DETECTION
1. Make sure that the power is connected to the fan.
2. Disconnect the power and verify that the impeller
is not blocked.
3. Check the thermo-contact (for AC). If it is triggered
the cause of overheating must be investigated and
taken care of. To restore the manual thermo-
contact, the power must be disconnected for a
couple of minutes. In case of automatic themo-
contact the resetting will be done automatically
when the motor has cooled down.
4. Make sure that the capacitor is connected according
to the wiring diagram (for AC).
5. If the fan still does not work, the first thing to do is
to replace the capacitor (for AC).
6. If the previous steps doesn´t solve the problem,
contact your fan supplier.
7. If the fan is returned to the supplier, it must be
cleaned, the motor cable must be undamaged and a
detailed fault description must be enclosed.
ENGLISH
WARRANTY
The warranty is only valid under condition that the
fan is used according to this “Directions for use” and
a regular maintenance has been made and record.
The warrantor is responsible only for the operation if
approved accessories are used. The warranty does not
cover product failures caused by accessories/equipme-
nt from other manufacturers.
MAINTENANCE
• Before service, maintenance or repair, disconnect
power and wait until the impeller has stopped.
• Attention, look out for sharp edges.
• Consider the weight of the fan when removing or
opening larger fans to avoid injury and damage.
• 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 switching it off.
• When cleaning and maintaining, the fan always
have to be secured when open, so it can’t fall
down and cause injury.
• The fan must be cleaned regularly, at least once
per year, to maintain the capacity and to avoid
unbalance which may cause unnecessary damage
to the bearings.
• When cleaning the fan, high-pressure cleaning or
strong dissolvent must not be used.
• Cleaning should be done without displacing or
damaging the impeller.
• The fan bearings are maintenance-free and should
be replaced only when necessary.
• Notice the weight of the fan when closing after
inspection/cleaning.
• Mount back all details in reverse order. Check that
the fan is closed and locked before starting.
• Make sure that there is no noise from the fan.
