Cgam Operating Principles; General - Trane CGAM Installation & Operation Manual

CGAM Operating Principles

This section contains an overview of the operation of
CGAM air-cooled liquid chiller equipped with
microcomputer-based control systems. It describes the
overall operating principles of the CGAM water chiller.
Note: To ensure proper diagnosis and repair, contact a
qualified service organization if a problem should
occur.

General

The Model CGAM units are scroll compressor air-cooled
liquid chillers.These units are equipped with unit-
mounted starter/control panels and operates with R-410A
refrigerant.
Figure 68. Slant 20-35 ton component location
Discharge line
Ball valve High pressure side
Schrader
Figure 69. V 40-70 ton component location - circuit 1
High pressure side
Schrader
90
Service valves
High pressure side
Low pressure side
Schrader
Discharge line
Low pressure
Ball valve
side Schrader
The basic components of an CGAM unit are:
• Unit-mounted panel containing starter andTracer
CH530 controller and Input/Output LLIDS
• Scroll compressors
• Brazed plate evaporator
• Air-cooled condenser with subcooler
• Electronic expansion valve
• Optional partial heat recovery
• Related interconnecting piping.
Components of a typical CGAM unit are identified in the
following diagrams.
Vent
Flow
valve
switch
Schrader
Drain
valve
CG-SVX17E-EN