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To align fan and motor pulleys:
1. Loosen fan pulley setscrews.
2. Slide fan pulley along fan shaft.
3. Make angular alignment by loosening motor from
mounting.
To adjust belt tension:
1. Loosen fan motor mounting nuts.
2. Slide motor mounting plate away from fan scroll for proper
belt tension (
1
⁄
2
-in. deflection with one finger).
3. Tighten motor mounting nuts.
4. Adjust bolt and tighten nut to secure motor in fixed
position.
Table 3 — Fan Rpm at Motor Pulley Settings*
UNIT
48TJ
MOTOR PULLEY TURNS OPEN
0
1
⁄
2
1
1
1
⁄
2
2
2
1
⁄
2
3
3
1
⁄
2
4
4
1
⁄
2
5
004†
1090
1055
1025
990
960
925
890
860
825
795
760
005†
1185
1150
1115
1080
1045
1015
980
945
910
875
840
006†
1300
1260
1220
1180
1140
1100
1060
1020
980
940
900
007**
1460
1420
1380
1345
1305
1265
1225
1185
1150
1110
1070
*Approximate fan rpm shown.
†Indicates alternate motor and drive package.
**Indicates standard motor and drive package.
Table 4 — Motor Data
UNIT
48TJ
EVAPORATOR-FAN
MOTOR
MAXIMUM
CONTINUOUS
BHP*
MAXIMUM
OPERATING
WATTS*
UNIT
VOLTAGE
MAXIMUM AMP
DRAW
004
Std
.34
440
208/230
2.9
460
1.4
575
1.4
Alt
1.00
1000
208/230
5.1
460
2.3
575
2.3
005
Std
.75
850
208/230
3.7
460
1.9
575
1.9
Alt
1.00
1000
208/230
5.1
460
2.3
575
2.3
006
Std
1.20
1340
208/230
6.2
570
3.4
575
3.4
Alt
1.80
1921
208/230†
9.2
208/230**
6.1
460
4.7
575
4.7
007
Std
2.40
2120
208/230
6.1
460
2.7
575
2.7
LEGEND
Bhp — Brake Horsepower
*Extensive motor and electrical testing on these units ensures that the full horsepower and watts
range of the motors can be utilized with confidence. Using your fan motors up to the ratings
shown in this table will not result in nuisance tripping or premature motor failure. Unit warranty
will not be affected.
†Single-phase motor.
**3-phase motor.
19
Summary of Contents for 48TJD Series
Page 40: ...Fig 47 Typical Wiring Diagram and Component Arrangement 40...
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