SRC Service Manual
Revision 02
Aug 2007
Table of Contents
1. General Description 4
2. Specifications 5
2.1 Model Range 5
2.2 Operating Limits 5
2.3 Technical Specifications 6
2.4 Weight & Dimensions 7
3. System Design 8
3.1 The Air Circuit 9
3.1.1 Air-To-Air Heat Exchanger 10
3.1.2 Air-To-Coolant Heat Exchanger 10
3.1.3 Demister Separator 10
3.1.4 Condensate Chamber 10
3.1.5 Dew Point Temperature Sensor 11
3.1.6 Level Sensor 11
3.2 The Coolant Circuit 11
3.2.1 The Thermal Mass Concept 12
3.2.2 Coolant-to-Refrigerant Heat Exchanger 13
3.2.3 Coolant Tank 14
3.2.4 Coolant Pump 14
3.2.5 Coolant Pressure Relief Valve 15
3.2.6 Coolant Expansion Tank 15
3.3 Refrigeration Circuit 15
3.3.1 Compressor 16
3.3.2 Condenser & Fan 16
3.3.3 Refrigerant Filter 17
3.3.4 Expansion Device 17
3.3.5 Refrigerant 17
3.3.6 High Pressure Switch 18
3.3.6 Low Pressure Switch 18
3.3.7 Fan Pressure Switch 18
3.4 Physical Arrangements 19
3.4.1 SRC-150 to 200 19
3.4.2 SRC-250 to 500 19
3.4.3 SRC-700 to 1000 20
(Continued on following page…)
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