Fan Rotation
Fan Pulley Alignment -
Align as follows:
1. Loosen setscrews on pulleys.
2. Align pulleys visually and tighten setscrews on fan pulley to lock it in place.
3. Use the methods shown in
Fan Pulley Adjustments to check proper pulley alignment.
4. If pulleys are not in correct alignment, loosen the motor holddown bolts and slide the motor axially until the pulleys
are aligned.
5. Tighten motor holddown bolts.
Fan Pulley Adjustments
Pulley and Drive Adjustment --
To obtain desired fan speed, refer to the fan motor and drive data in and adjust fan
motor pulley as follows:
1. Remove belt from fan motor pulley after loosening motor from motor base.
2. Loosen setscrew in moveable flange of pulley. Screw moveable flange toward fixed flange to increase the fan
speed and away from fixed flange to reduce speed. Before tightening setscrew, make certain that setscrew is over
nearest flat surface of pulley hub as shown in Fan Pulley Adjustments
.
UNIT OPERATION HAZARD
Failure to follow this caution could cause equipment damage.
Increasing fan speed produces a greater load on motor. Do not exceed rated capacity of motor.
WARNING
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