Bryant 524J Series Installation, Start-Up And Service Instructions Manual page 27

UNIT
MOTOR DRIVE
Motor Pulley Pitch Diameter (in.)
Pulley Factory Setting
Full Turns Open
FAN DRIVE
Pulley Pitch Dia (in.)
Pulley Bore (in.)
Belt No. — Section
Belt Pitch (in.)
FAN SPEEDS (rpm)
Factory Setting
Range
Maximum Allowable Speed
(rpm)
Change Per 1/2 Turn of
Moveable Motor Pulley Flange
MAXIMUM FULL TURN FROM
CLOSED POSITION
SHAFTS CENTER DISTANCE (in.)
NOTE(S):
a. It is possible to adjust drive so that fan speed exceeds maximum allowable. DO NOT exceed 1200 rpm.
UNIT
MOTOR DRIVE
Motor Pulley Pitch Diameter
(mm)
Pulley Factory Setting
Full Turns Open
FAN DRIVE
Pulley Pitch Dia (mm)
Pulley Bore (mm)
Belt No. — Section
Belt Pitch (mm)
FAN SPEEDS (r/s)
Factory Setting
Range
Maximum Allowable Speed (r/s)
Change Per 1/2 Turn of
Moveable Motor Pulley
Flange
MAXIMUM FULL TURN FROM
CLOSED POSITION
SHAFTS CENTER DISTANCE
(mm)
NOTE(S):
a. Four belts shipped with unit. Use correct set of 2 belts sized according to the pulley setting.
Table 17 — High-Static Drive Data, 60 Hz — English
524J*25A
524J*25H
4.3-5.3
3.0
7.4
1-7/16
2 — B
36.8
1118
1014-1200
a
1200
19.4
6
8.16-10.02
Table 18 — Standard Drive Data, 60 Hz — SI
524J*25A
524J*25H
94.0-119.4
3.0
239
36.5
2 — B
1062
12.9
11.3-14.4
20.0
0.255
6
232-279
27
524J*28A
4.3-5.3
3.0
8.6
1-15/16
2 — B
378
1024
873-1075
1100
16.7
6
6.67-9.43
524J*28A
109.2-134.6
3.0
279
49.2
2 — B
a
(2) 1987
(2) 1113
12.5
11.4-14.0
18.3
0.218
6
169-240
524J*30A
4.3-5.3
3.0
8.6
1-15/16
2 — B
37.8
1024
873-1075
1100
16.7
6
6.67-9.43
524J*30A
109.2-134.6
3.0
279
49.2
2 — B
a
(2) 1987
(2) 1113
12.5
11.2-13.9
18.3
0.218
6
169-240