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Copeland Screw
™
CompressorsCompressors
CompressorsCompressors
Compressors
Semi-Hermetic Compact Semi-Hermetic Compact
Semi-Hermetic Compact Semi-Hermetic Compact
Semi-Hermetic Compact
Application ManualApplication Manual
Application ManualApplication Manual
Application Manual
1 General1 General
1 General1 General
1 General
2 Design and functions2 Design and functions
2 Design and functions2 Design and functions
2 Design and functions
2.1 Design features
2.2 Compression process Vi control
2.3 Capacity control and start unloading
2.4 Hydraulic control
2.5 Starting the compressor
2.6 Infinite capacity control
Oil circulation
3 Lubricants3 Lubricants
3 Lubricants3 Lubricants
3 Lubricants
4 Integration into the refrigeration circuit4 Integration into the refrigeration circuit
4 Integration into the refrigeration circuit4 Integration into the refrigeration circuit
4 Integration into the refrigeration circuit
1.1 Mounting the compressor
1.2 System layout
1.3 Guide lines for special system
variations
1.4 Additional cooling by liquid injection
1.5 Additional cooling by external oil
cooler
5 Economizer operation5 Economizer operation
5 Economizer operation5 Economizer operation
5 Economizer operation
5.1 General
5.2 Operation principal
5.3 ECO operation with subcooling circuit
5.4 ECO operation with intermediate
pressure receiver
5.5 Layout and selection
recommendations
5.6 Additional components
5.7 Control
6 Electrical connections6 Electrical connections
6 Electrical connections6 Electrical connections
6 Electrical connections
6.1 Motor design
6.2 Selection of electrical components
6.3 Compressor protection system
6.4 Schematic wiring diagrams
AE4-1322
April 2002
SCH2 & SCA2SCH2 & SCA2
SCH2 & SCA2SCH2 & SCA2
SCH2 & SCA2
High Temp Compressors
35 – 140 Horsepower
Contents
© 2002 Copeland Corporation
Issued 4-2002
Printed in U.S.A.
™
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