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IOM_ACVBA-ACVA_351a2402_207958_180109_EN
ACVBA-ACVA
PACKAGED VERTICAL COMPACT UNITS
AIR-AIR
OPERATION
INDOOR FAN TRANSMISSION ADJUSTMENT
Adjust transmission in such a way that the indoor motor consumption comes to its normal value.
If the consumption is lower than the nominal value it means that the unit air flow is too low.
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How to change the fan speed
:
1. Remove the belt. Move the motor along its track (or loosen the tensor set screw) in order to release it.
2. Loose the set screws of the motor pulley and turn the movable flange. Open or close depending on the needs
(Open: speed decreases).
3. Tighten set screws.
Place the belt in the pulley channel. The closure or opening of the pulley could void the size of the prior belt. In
this case, replace it for other belt of the same profile and with the appropriate length.
4. Tighten the belt by using a tensor screw or by sliding the motor, depending on the case.
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Align fan and motor pulleys:
1. Loose the fan pulley set screws.
2. Slide fan pulley along the shaft and align it with motor by using a ruler in order to ensure that is parallel to the
belt.
3. Tighten the fan pulley set screws.
-
Adjust belt tension
:
1. Loose motor mounting plate bolt and slide it.
2. Dividing S estimates belt flexion millimetres by 40.
1.
Motor
2.
Motor pulley
3.
Transmission
belt
4.
Fan pulley
5.
Tensor set screw
6.
Set screw
7.
Fixed flange
8.
Movable flange
