Mechanical Design
14
Capacity Control
Four and six cylinder compressors offer integrated capacity control that makes use of the
principle of suction shut-off.
The following combinations are possible:
In full-load operation the solenoid coil is de-energized, and suction gas flows to all cylinders.
The gas ports in the valve plate and cylinder head are open. In part-load operation, the solenoid
is energized, and the suction port in the corresponding cylinder head is shut off, thereby causing
the cylinder bank to run idle, without gas pressure.
Compressor Type Possible Unloaded Capacity
Number of Unloaders
4-Cylinder
50%
1
66% 1
6-Cylinder
66% and 33%
2
75%
1
8-Cylinder
75% and 50%
2
Summary of Contents for Ingersoll Rand
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Page 191: ...Dimensions 1...
Page 192: ...Dimensions 2...
Page 193: ...Dimensions 3...
Page 194: ...Dimensions 4...
Page 212: ...Electrical Data 12 Control Circuit Wiring Schematics Figure 1 Motor protector SE B1 shown...
Page 213: ...Electrical Data 13 Figure 2 Motor protector SE B2 shown...
Page 214: ...Electrical Data 14 Figure 3 Motor protector and oil failure control module INT69 70 shown...
Page 215: ...Mechanical Design 1 Ingersoll Rand Impact Semi Hermetic Reciprocating Compressors...
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Page 265: ...Aftermarket 5 IR Impact Compressor 4 hour Distribution Map...
Page 285: ...Aftermarket 25 Compressor Exploded View IR2C0173 to IR4C1385...
Page 286: ...Aftermarket 26 Compressor Optional Heads Exploded View IR2C0173 to IR4C1385...
Page 287: ...Aftermarket 27 Compressor Exploded View IR4C1480 to IR4C2397...
Page 288: ...Aftermarket 28 Compressor Optional Heads Exploded View IR4C1480 to IR4C2397...
Page 289: ...Aftermarket 29 Compressor Exploded View IR4B2707 to IR6B6462...
Page 290: ...Aftermarket 30 Compressor Optional Heads Exploded View IR4B2707 to IR6B6462...
Page 291: ...Aftermarket 31 Compressor Exploded View IR8C7863 to IR8C9400...
Page 292: ...Aftermarket 32 Compressor CR Head Exploded View IR8C7863 to IR8C9400...
Page 297: ...Aftermarket 37...
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