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Type 3-4-5-6-7-8:
•
Loosen the belts tension by unloosing the screw
1
•
Remove the belt
5
•
Using an hexagonal bar spanner
2
, unloose the grains
3
of the sheave
4
movable part.
•
Rotate the sheave of the movable part until the desired original diameter is reached.
•
Firmly tighten the screws
3
at the hub cavity
•
Install the belt
5
and stretch it.
In the case of models equipped with more than one motor, each motor must be adjusted
and its electrical absorption must be checked independently.
New belts, after a certain period of operation, tend to get longer. It is therefore
advisable to recheck correct tensioning of the belts after a short operating time of the
appliance.
Never pull the belts too tightly, as the fan shaft may break. When you press the two
sides of the belt with your hands it must be able to bend about 20-30 mm.
