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27
Fig. 25 —
Fan Motor Mounting
Fan Rotation
Correct fan rotation with respect to fan outlet is shown in Fig. 26.
Fig. 26 —
Fan Rotation
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.
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 Fig. 27 to check proper pulley
alignment.
Fig. 27 —
Fan Pulley Adjustments
4. If pulleys are not in correct alignment, loosen the motor hold
-
down bolts and slide the motor axially until the pulleys are
aligned.
5. Tighten motor holddown bolts.
Fan
Pulley(s)
Belts
Motor
Pulley(s)
Mounting
Bolts
Slot
Air
Discharge
Cutoff
Plate
Fan
Wheel
Fan
Housing
Adjustable Flanges
Setscrews
Straight Edge Must
Be Parallel
With Belt
Fixed Flanges
Two Grooves
Single Groove
Motor and Fan Shafts
Must Be Parallel
Pulleys
Setscrews
Summary of Contents for 40RU 25
Page 3: ...3 Fig 1 Dimensions Size 25...
Page 4: ...4 Fig 1 Dimensions Size 25 cont...
Page 5: ...5 Fig 2 Dimensions Sizes 28 and 30...
Page 6: ...6 Fig 2 Dimensions Sizes 28 and 30 cont...
Page 37: ......