Bryant 524J manual E - Medium-StaticDrive Data, 60 Hz - SI, F - High-StaticDrive Data, 60 Hz - SI

Table 9E - Medium-Static Drive Data, 60 Hz — SI

UNIT	524J*25A	524J*28A	524J*30A
	524J*25H
MOTOR DRIVE
Motor Pulley Pitch Diameter (mm)	109.2--- 134.6	109.2--- 134.6	109.2--- 134.6
Pulley Factory Setting	3.0	3.0	3.0
Full Turns Open
FAN DRIVE
Pulley Pitch Dia (mm)	239	239	239
Pulley Bore (mm)	36.5	49.2	49.2
Belt No. — Section	1—B	2—B†	2—B†
Belt Pitch (mm)	1062	(2) 986	(2) 986
		(2) 1011	(2) 1011
FAN SPEEDS (r/s)
Factory Setting	14.7	14.7	14.7
Range	13.3--- 16.4	13.3--- 16.4	13.3--- 16.4
Max Allowable Speed (r/s)	20.0	18.3	18.3
Change per 1/ Turn of
2	0.255	0.255	0.255
Moveable Motor Pulley
Flange
MAX FULL TURNS FROM	6	6	6
CLOSED POSITION
SHAFTS CENTER DISTANCE (mm)	232--- 279	169--- 240	169--- 240

†Four belts shipped with unit. Use correct set of 2 belts sized according to the pulley setting.

Table 9F - High-Static Drive Data, 60 Hz — SI

UNIT	524J*25A	524J*28A	524J*30A
	524J*25H
MOTOR DRIVE
Motor Pulley Pitch Diameter (mm)	109.2--- 134.6	109.2--- 134.6	109.2--- 134.6
Pulley Factory Setting	3.0	3.0	3.0
Full Turns Open
FAN DRIVE
Pulley Pitch Dia (mm)	188	203†	203
Pulley Bore (mm)	36.5	49.2	49.2
Belt No. — Section	2—B	2—B	2—B
Belt Pitch (mm)	935	935	960
FAN SPEEDS (r/s)
Factory Setting	18.6	17.1	17.1
Range	16.9--- 20.0†	14.6--- 17.9	14.6--- 7.9
Max Allowable Speed (r/s)	20.0	18.3	18.3
Change per 1/ Turn of
2	0.323	0.278	0.278
Moveable Motor Pulley
Flange
MAX FULL TURNS FROM	6	6	6
CLOSED POSITION
SHAFTS CENTER DISTANCE (mm)	207--- 255	169--- 240	169--- 240

†It is possible to adjust drive so that fan speed exceeds maximum allowable. DO NOT exceed 20 r/s

524J

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