SRL Service Manual
Revision 00
July 2007
Page 1 of 56
Table of Contents
1. General Description
4
2. Specifications
5
2.1
Model
Range
5
2.1.1 60 Hz Models
5
2.1.2 50 Hz Models
6
2.2
Operating
Limits
6
2.3
Technical
Specifications
7
2.3.1 60 Hz Air Cooled Models
7
2.3.2 60 Hz Water Cooled Models
8
2.3.3 50 Hz Air Cooled Models
9
2.3.4 50 Hz Water Cooled Models
10
2.4 Weight & Dimensions
11
2.4.1 60 Hz Models
11
2.4.2 50 Hz Models
12
3. System Design
13
3.1 The Air Circuit
14
3.1.1 Air-To-Air
Heat
Exchanger
15
3.1.2 Air-To-Refrigerant Heat Exchanger
15
3.1.3
Demister
Separator
15
3.1.4
Condensate
Chamber
15
3.1.5 Dew Point Temperature Sensor
16
3.1.6
Condensate
Level
Sensor
16
3.2
Refrigeration
Circuit
16
3.2.1 The Thermal Mass Concept
17
3.2.2
Compressor
17
3.2.3
Condenser
18
3.2.4
Refrigerant
Filter
18
3.2.5
Expansion
Device
19
3.2.6
Refrigerant
19
3.2.7
High
Pressure
Switch
19
3.2.8
Low
Pressure
Switch
19
3.2.9 Fan Pressure Switch (Air Cooled Units)
20
3.2.10 Water Regulating Valve (Water Cooled Units)
20
3.2.11 Hot Gas Bypass Valve
20
3.2.12
Liquid
Accumulator
21
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