OVERVIEW
This section details the refrigeration process by
tracking the refrigerant flow through the system
components. Oil separation and return is
explained.
Super Plus™ Refrigeration System...............2
Basic Refrigeration........................................4
Heat Reclaim.................................................6
Receiver Pressure and Vapor Temperature
Regulation ...............................................6
Koolgas Defrost.............................................7
Oil System.....................................................8
Subcooling
Autosurge ................................................9
Mechanical ............................................10
Demand Cooling™......................................11
The Super Plus
T M
is designed with twin
receivers for increased receiver volume. The
compact design reduces height and width
requirements, yet provides convenient access to
components for easy maintenance and service.
Because service is of prime interest, it should be
noted that the low center of gravity inherent
with the twin receiver design minimizes
vibration, extending system life and reducing
service needs.
In this instruction the following constants are
maintained to assist the reader:
In the diagrams, refrigerant flow direction is
generally clockwise.
Electrical solenoid valves carry the same initial
abbreviations as in the electrical schematics.
Refrigeration lines not actually in the cycle
being discussed are shown closed or removed.
Each specific refrigerant state and pressure
maintains the same fill pattern throughout the
instruction.
Pressures in oil lines will also retain a fixed
pattern.
Revised August 1, 1996 P/N 340272A
2 - 1
SUPER PLUS REFRIGERATION PROCESS
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 • Printed in USA
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