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Fan
Pulley(s)
Belts
Motor
Pulley(s)
Mounting
Bolts
Fan Rotation
Correct fan rotation with respect to fan outlet is shown in
Fig. 28.
To reverse the direction of rotation of a 3-phase fan motor,
reverse any 2 of the power leads. Refer to the connection
diagram on the inside of motor terminal box cover for proper
reversing procedure of a single-phase motor.
Air
Discharge
Cutoff
Plate
Fan
Wheel
Fig. 28 — Fan Rotation
Fan Pulley Alignment
Align as follows:
1. Loosen setscrews on pulleys.
2. Align pulleys visually and tighten setscrews on fan pul-
ley to lock it in place.
3. Use the methods shown in Fig. 29 to check proper pul-
ley alignment.
26
Fig. 27 — Fan Motor Mounting
Pulleys
Fan
Housing
4. If pulleys are not in correct alignment, loosen the motor
5. Tighten motor holddown bolts.
Specifications subject to change without notice.
Straight Edge Must
Be Parallel
With Belt
Setscrews
Single Groove
Motor and Fan Shafts
Must Be Parallel
Fig. 29 — Fan Pulley Adjustments
holddown bolts and slide the motor axially until the pul-
leys are aligned.
Slot
Adjustable Flanges
Setscrews
Fixed Flanges
Two Grooves
FASFHS150-180-01SI
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