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Table 9 — Fan Rpm at Motor Pulley Setting*; Standard Motor/Drive
*Approximate fan rpm shown.
Table 10 — Fan Rpm at Motor Pulley Setting*; High-Static Motor/Drive
*Approximate fan rpm shown.
Table 11 — Evaporator-Fan Motor Data — Standard Motor
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.
UNIT
551B
MOTOR PULLEY TURNS OPEN
0
1
/
2
11
1
/
2
22
1
/
2
33
1
/
2
44
1
/
2
55
1
/
2
6
090,102 1085 1060 1035 1010 985 960 935 910 890 865 840 — —
120 1080 1060 1035 1015 990 970 950 925 905 880 860 — —
150 1130 1112 1087 1062 1037 1212 987 962 937 912 887 862 830
UNIT
551B
MOTOR PULLEY TURNS OPEN
0
1
/
2
11
1
/
2
22
1
/
2
33
1
/
2
44
1
/
2
55
1
/
2
6
090 1080 1025 1007 988 970 952 933 915 897 878 860 — —
102 1080 1025 1007 988 970 952 933 915 897 878 860 — —
120 1130 1112 1087 1062 1037 1212 987 962 937 912 887 862 830
UNIT
551B
UNIT
PHASE
MAXIMUM
CONTINUOUS BHP*
MAXIMUM
OPERATING WATTS*
UNIT VOLTAGE
MAXIMUM
AMP DRAW
090,102 Three 2.90 2615
208/230 8.6
460 3.9
575 3.9
120 Three 3.70 3775
208/230 12.2
460 5.5
575 5.5
150 Three 5.25 4400
208/230 17.3
460 8.5
575 8.5
Fig. 38 — Typical Belt-Drive Motor Mounting for
Sizes 102-150
Fig. 39 — Indoor-Fan Pulley Adjustment