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Notes for removing faults
Fault
The fan does not
start.
The fan is noisy.
The fan vibrates
too much.
Important:
Opening up and repairing the unit may only be carried out by a specialist!
Remedy
Check the fuses/trips at the main box and other connections.
Check the fan connection to the mains.
Check that fuses/trips in the connection box are correctly inserted.
Check that all bolts and screws have been tightened.
Run in the fan and the bearings for 24 hours. Most noises disappear after
this time.
All blades have been weighed and grouped according to weight.
Their density can vary and therefore cause vibration even when all blades
are of the same weight. The following methods can contribute to preventing
most vibrations. Check the vibration before each procedure. Please note
that a small amount of vibration is normal and does not pose a problem.
Most vibrations occur when one of the blades is not in alignment with
the others. Aligning the blades is simply carried out with the aid of a flat
ruler. Place the ruler vertically upwards against the ceiling and alongside
the blade tip. Mark the distance between the blade side and ceiling.
Turn the blades slowly by hand and carry out the same measurements with
the other blades. If one of the blades is not correctly aligned, it can be
remedied by lightly pressing their holders upwards or downwards in order
to align them with the others.
Check that the mounting plate is firmly anchored to the ceiling.
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