Carrier 5H User Manual
Page 12
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CONTROL OIL
PRESSURE
ORIFICE ■
TO OTHER
, UNLOADER
f
POWER
ELEMENTS
FROM COMPRESSOR
Oil PUMP
RANGE-----------
ADJUSTMENT
SPRING
TRAVELING ’
NUT
CAPACITY
CONTROL
VALVE
SUCTION VALVE
DISC
LIFTER SPRINGS
AND PINS,
PISTON
UNLOADER
POWER ELEMENT
OIL
DRAIN
FROM
CRANKCASE
PRESSURE
(SUCTION OF
OIL PUMP)
ñi
—
w~
_J
UNLOADER
SLEEVE
■ CYLINDER
SLEEVE
CONTROL OIL
PRESSURE
CRANKCASE
PRESSURE
OIL PUMP
PRESSURE
Fig. 6 - Capacity Control - 5H120
Table 10 - Capacity Control Steps and Bhp Requirements
MACHINE SIZE
NUMBER OF
CONTROLLED
CYLINDERS
CAPACITY STEPS IN PERCENT
100
87-1/2
83-1/3
75
66-2/3
62-1/2
50
37-1/2
33-1/2
25
Percent Full Load Bhp
100
90
86
80
74
71
60
50
45
38
Number of Active Cylinders
5F20
1
of 2
2
_
—
_
_
_
1
_
_
_
5F30*
2of 3
3
_
-
~
2
-
-
-
1
-
5F40, 5H40, 46
3of 4
4
-
-
3
-
-
2
-
-
1
5F60, 5H60
4 of 6
6
-
5
-
4
-
3
-
2
-
5H80
6
of 8
8
7
-
-
5
-
3
-
2
5H120
8
of 12
12
-
10
-
8
-
6
-
4
-
''Standard unloading compressor package has only one-step reduction (66-2/3%). Two-step reduction available on request
SECTION
PAGE
DATE
5F,H-1XA
12
10-66
Printed in U.S.A.
S U P E R S E D E S
SECTION
5F,H-1X
PAGES
1-42
DATE
11-63