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Table 17 — Standard Drive Data, 60 Hz — English
UNIT
40RUA*25
40RUQ*25
40RUS*25
40RUA*28
40RUS*28
40RUA*30
40RUS*30
Motor Drive
Motor Pulley Pitch Diameter (in.)
3.7-4.7
4.3-5.3
4.3-5.3
Pulley Factory Setting
Full Turns Open
3.0
3.0
3.0
Fan Drive
Pulley Pitch Dia (in.)
9.4
11.0
11.0
Pulley Bore (in.)
1-7/16
1-15/16
1-15/16
Belt No. — Section
2 — B
2 — B
a
NOTE(S):
a. Four belts shipped with unit. Use correct set of 2 belts sized according to the pulley setting.
2 — B
a
Belt Pitch (in.)
41.8
(2) 42.8
(2) 43.8
(2) 42.8
(2) 43.8
Fan Speeds (rpm)
Factory Setting
771
752
752
Range
679-863
682-841
674-831
Maximum Allowable Speed
(rpm)
1200
1100
1100
Change per 1/2 Turn of
Moveable Motor Pulley
Flange
15.3
13.1
13.1
Maximum Full Turn From Closed
Position
6
6
6
Shafts Center Distance (in.)
9.12-10.99
6.67-9.43
6.67-9.43
Table 18 — Medium-Static Drive Data, 60 Hz — English
UNIT
40RUA*25
40RUQ*25
40RUS*25
40RUA*28
40RUS*28
40RUA*30
40RUS*30
Motor Drive
Motor Pulley Pitch Diameter (in.)
4.3-5.3
4.3-5.3
4.3-5.3
Pulley Factory Setting
Full Turns Open
3.0
3.0
3.0
Fan Drive
Pulley Pitch Dia (in.)
9.4
9.4
9.4
Pulley Bore (in.)
1-7/16
1-15/16
1-15/16
Belt No. — Section
1 — B
2 — B
a
NOTE(S):
a. Four belts shipped with unit. Use correct set of 2 belts sized according to the pulley setting.
2 — B
a
Belt Pitch (in.)
41.8
2) 38.8
(2) 39.8
2) 38.8
(2) 39.8
Fan Speeds (rpm)
Factory Setting
881
881
881
Range
798-984
798-984
798-984
Maximum Allowable Speed
(rpm)
1200
1100
1100
Change per 1/2 Turn of
Moveable Motor Pulley
Flange
15.3
15.3
15.3
Maximum Full Turn From Closed
Position
6
6
6
Shafts Center Distance (in.)
9.12-10.99
6.67-9.43
6.67-9.43
Summary of Contents for 40RU 25
Page 3: ...3 Fig 1 Dimensions Size 25...
Page 4: ...4 Fig 1 Dimensions Size 25 cont...
Page 5: ...5 Fig 2 Dimensions Sizes 28 and 30...
Page 6: ...6 Fig 2 Dimensions Sizes 28 and 30 cont...
Page 37: ......