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APPLICATION DATA — 524A (cont)
FAN MOTOR DATA (cont)
ALTERNATE MOTOR
LEGEND
NEMA — National Electrical Manufacturers Association
STANDARD DRIVE DATA
*Four belts shipped with unit. Use correct set of 2 belts sized according to the pulley setting.
UNIT SIZE 524A 072 090 120 150 180 240 300
208/230-1-60
Speed (rpm) 1725 1725 — — — — —
Hp 2.42.4—————
Frame (NEMA) 56Y 56Y — — — — —
ShaftDia(in.)
5
/
8
5
/
8
—————
230-3-60 and 460-3-60
Speed (rpm) 1725 1725 1725 1725 1725 1745 1745
Hp 2.9 2.9 3.7 3.7 5.0 7.5 10.0
Frame (NEMA) 56Y 56Y Y56Y Y56Y S184T S213T S215T
ShaftDia(in.)
7
/
8
7
/
8
7
/
8
7
/
8
1
1
/
8
1
3
/
8
1
3
/
8
575-3-60
Speed (rpm) 1725 1725 1725 1745 1745 1755 1750
Hp 2.0 3.0 3.0 5.0 5.0 7.5 10.0
Frame (NEMA) 56HZ 56HZ 56HZ 184T 184T S213T D215T
ShaftDia(in.)
7
/
8
7
/
8
7
/
8
1
1
/
8
1
1
/
8
1
3
/
8
1
3
/
8
UNIT SIZE 524A 072 090 120 150 180 240 300
MOTOR DRIVE
Motor Pulley Pitch Diameter (in.) 2.4-3.4 2.8-3.8 3.4-4.4 2.8-3.8 2.8-3.8 3.7-4.7 4.3-5.3
Pulley Factory Setting
Full Turns Open
2.5 2.5 2.5 2.5 2.5 3.0 3.0
FAN DRIVE
Pulley Pitch Dia (in.) 8.8 8.8 8.8 9.0 9.0 9.4 11.0
Pulley Bore (in.) 1111
7
/
16
1
7
/
16
1
7
/
16
1
15
/
16
Belt No. — Section 1—A 1—A 1—A 1—A 1—A 1—B 2—B*
Belt Pitch (in.) 40.3 41.3 42.3 42.3 42.3 41.8
(2) 42.8
(2) 43.8
FAN SPEEDS (rpm)
Factory Settings 568 647 764 632 632 771 752
Range 470-666 549-745 666-863 537-728 537-728 679-863 682-841
Max Allowable Speed (rpm) 1200 1200 1200 1200 1200 1200 1100
Change per
1
/
2
turn of
Moveable Motor Pulley
Flange
19.6 19.6 19.7 19.1 19.1 15.3 13.1
MAX FULL TURNS FROM
CLOSED POSITION
5555566
SHAFTS CENTER DISTANCE (in.)
10.44-
12.32
10.44-
12.32
10.44-
12.32
10.44-
12.32
10.44-
12.32
9.12-
10.99
6.67-
9.43
50TFQ004-012
524A072-300