21
IOM ACHA-ACHBA_201a1201_208000_180901_EN
ACHA / ACHBA
PACKAGED COMPACT
HORIZONTAL AIR - AIR
OPERATION
INDOOR FAN TRANSMISSION ADJUSTMENT
Adjust transmission in such a way that the indoor motor consumption comes to its normal value.
If consumption is below nominal value it means that unit air flow is too low.
-
Change 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.
4. 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.
5.
Tighten the belt by using tensor screw or sliding the motor, depending on the case.
-
Align fan and motor pulleys:
1. Loose 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 fan pulley set screws
.
1.
Motor
2.
Motor pulley
3.
Transmission belt
4.
Fan pulley
5.
Tensor set screw
6.
Set screw
7.
Fixed flange
8.
Movable flange
