Refrigeration System - GE GTRS0 Series Technical Service Manual

REFRIGERATION SYSTEM

The major components of the refrigeration
system are a reciprocating-type compressor,
condenser, condenser loop, dryer, and a spine-
fin evaporator. These components, except for
the condenser loop, are all replaceable
separately.
Compressor
The compressor is a reciprocating type. Refer
to the mini-manual for the BTU/hour rating and
the compressor capacity test specification.
A 1/4-in. O.D. copper process tube is provided
for access to the low-pressure side of the
refrigeration system.
The channel that the compressor is mounted in
must be disengaged from the cabinet to remove
the compressor.
Note: Capillary tube must be clipped to
compressor suction line near the dryer. If
capillary tube is not clipped to suction line, a
knocking noise may occur during compressor
operation.
Refer to the compressor replacement
instructions included with the replacement
compressor.
No-Clean Condenser
The Condenser is a No-Clean, "jelly roll" style
condenser made of 3/16-in. O.D. steel tubing.
The outlet of the condenser is connected to a
copper jumper tube that is connected to the inlet
of the condenser loop. The No-Clean
condenser is accessed from the rear of the
cabinet and is designed to be more tolerant of
lint buildup than previous condensers. The
consumer, in normal operating conditions, will
never have to clean the condenser. If
necessary, only an ordinary appliance brush is
used. Air is drawn in from the outside diameter
of the condenser. A condenser fan baffle is
located at the rear to direct airflow through the
condenser. Functionally, the condenser does
the same job as previous models. Air is drawn
into the condenser from the front left and rear
left of the cabinet. Air exits only from the right
side of the cabinet.
Condenser Loop
The condenser loop, made of 5/32-in. O.D.
copper tubing, is foamed in place behind the
breaker frame and across the mullion. It is not
accessible for replacement. The tubing is
routed from the rear of the machine
compartment forward to the mullion, across the
mullion, across the right side of the freezer
compartment, across the top of the freezer
compartment, down the right side of the freezer,
and back to the rear of the machine
compartment. The outlet of the condenser loop
is connected to the dryer inlet.
Dryer
The dryer is positioned vertically in the center of
the machine compartment. A 1/4-in. O.D.
copper process tube, connected to the inlet of
the dryer, provides access to the high-pressure
side of the refrigeration system. The capillary is
connected to the outlet of the dryer.
Replacement of filter dryer requires additional
refrigerant when installed (0.5 oz).
Note: The dryer is wrapped in mastic as a
sound reducer and foam tape for shipping
purposes. When replacing the dryer, the mastic
must be reinstalled to reduce sound. It is not
necessary to reinstall the foam tape.
Evaporator
The spine-fin evaporator, made of aluminum
tubing and formed into hairpin spirals, is located
below the evaporator fan housing at the back of
the freezer compartment. The replacement
evaporator is furnished without a heat
exchange.
Evaporator (Soldering Method)
1. Recover the refrigerant.
2. Remove the evaporator cover.
3. Remove the defrost thermostat.
4. Remove the defrost heater.
5. Disconnect the ground wire from the
evaporator and position all wiring to allow for
evaporator removal.
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