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M A I N T E N A N C E
•
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, high-pressure cleaning or
strong dissolvent must not be used.
•
Cleaning should be done without dislodging or
damaging the impeller.
•
Make sure that there is no noise from the fan.
F A U L T D E T E C T I O N
1.
Make sure that there is tension to the fan.
2.
Cut the tension and verify that the impeller is not
blocked.
3.
Check the thermo-contact/motor protector. If it is
disconnected the cause of overheating must be
taken care of, not to be repeated. To restore the
manual thermo-protector the tension will be cut for
a couple of minutes. Larger motors than 1,6 A may
have manual resetting on the motor. If it has auto-
matic thermo-protector the resetting will be done
automatically when the motor is cold.
4.
Make sure that the capacitor is connected, (single
phase only) according to the wiring diagram.
5.
If the fan still does not work, the first thing to do
is to change the capacitor.
6.
If nothing of this works, contact your fan supplier.
7.
If the fan is returned to the supplier, it must be
cleaned, the motor cable undamaged and a
detailed nonconformity report enclosed.