Pulley And Drive Adjustment - Carrier FAS150 Installation, Start-Up And Service Instructions Manual

Pulley and Drive Adjustment

To obtain desired fan speed, refer to the fan motor, drive
data and performance data in Tables 15-34 and adjust fan
motor pulley as follows:
1. Remove belt from fan motor pulley after loosening
motor from motor base.
2. Loosen setscrew in movable flange of pulley. Screw
movable 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. (See Fig. 29.)
CAUTION
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.
Table 15 — Fan Motor Data, FAS Standard Motor,
Two Speed — English
UNIT
208/230-3-60 and 460-3-60
Speed (rpm)
Hp
Frame (NEMA)
Shaft Dia (in.)
575-3-60
Speed (rpm)
Hp
Frame (NEMA)
Shaft Dia (in.)
Table 16 — Fan Motor Data, FAS Alternate Motor,
Two Speed — English
UNIT
208/230-3-60 and 460-3-60
Speed (rpm)
Hp
Frame (NEMA)
Shaft Dia (in.)
575-3-60
Speed (rpm)
Hp
Frame (NEMA)
Shaft Dia (in.)
Table 17 — Motor Efficiency FAS —
Two-Speed Motor
MOTOR HP EPACT MINIMUM (%)
2.4 —
2.9 —
3.7 —
5.0 89.5
LEGEND
EPACT — Energy Policy and Conservation Act of 1992
FASFHS150-180-01SI
FAS150 FAS180
1735 1750
2.9 3.7
56HY 56HY
7/8 7/8
1710 1710
3.7 3.7
56HY 56HY
7/8 7/8
FAS150 FAS180
1750 1755
3.7 5.0
56HY 184T
7/8 1-1/8
1755 1755
5.0 5.0
184T 184T
1-1/8 1-1/8
MOTOR EFFICIENCY
(%)
80.0
86.5
83.6
89.5
Specifications subject to change without notice.
Table 18 — Fan Motor Data, FAS Standard Motor,
Two Speed — SI
UNIT
208/230-3-60 and 460-3-60
Speed (r/s)
Shaft kW
Frame (NEMA)
Shaft Dia (mm)
575-3-60
Speed (r/s)
Hp
Frame (NEMA)
Shaft Dia (mm)
Table 19 — Fan Motor Data, FAS Alternate Motor,
Two Speed — SI
UNIT
208/230-3-60 and 460-3-60
Speed (r/s)
Shaft kW
Frame (NEMA)
Shaft Dia (mm)
575-3-60
Speed (r/s)
Hp
Frame (NEMA)
Shaft Dia (mm)
Table 20 — Fan Motor Data, FHS Standard Motor,
Two Speed — English
UNIT
208/230-3-60 and 460-3-60
Speed (rpm)
Hp
Frame (NEMA)
Shaft Dia (in.)
575-3-60
Speed (rpm)
Hp
Frame (NEMA)
Shaft Dia (in.)
Table 21 — Fan Motor Data, FHS Alternate Motor,
Two Speed — English
UNIT
208/230-3-60 and 460-3-60
Speed (rpm)
Hp
Frame (NEMA)
Shaft Dia (in.)
575-3-60
Speed (rpm)
Hp
Frame (NEMA)
Shaft Dia (in.)
FAS150 FAS180
28.92 29.17
2.16 2.76
56HY 56HY
22.2 22.2
28.50 28.50
2.76 2.76
56HY 56HY
22.2 22.2
FAS150 FAS180
29.17 29.25
2.76 3.73
56HY 184T
22.2 28.6
29.25 29.25
3.73 3.73
184T 184T
28.6 28.6
FHS180
1750
3.7
56HY
7/8
1710
3.7
56HY
7/8
FHS180
1755
5.0
184T
1-1/8
1755
5.0
184T
1-1/8
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