Sealed System Information
600 Series
(Prior to #1810000)
4-5
#3756270 - Revision B - January, 2006
Capillary Tube (Part of Heat Exchanger) (Figure 4-4)
The high-pressure/warm liquid refrigerant travels through
the long skinny capillary tube which is attached to the
suction line. (These two tubes soldered together create
the heat exchanger.) As the high-pressure/warm liquid
refrigerant travels through the capillary tube it gives up
heat to the cool refrigerant gas traveling through the suc-
tion line and the pressure drops, so it is a low-
pressure/cool liquid before it enters the evaporator.
Evaporator (Figure 4-5)
As the low-pressure/cool liquid refrigerant enters the
evaporator, it vaporizes. This is caused by a dramatic
pressure change which occurs when the refrigerant
enters the larger diameter evaporator tubing from the
smaller diameter capillary tubing. This vapor travels
through the evaporator absorbing heat from the compart-
ment, gradually converting it to a cool gas. This cool gas
then enters the suction line.
Suction Line (& Heat Exchanger) (Figure 4-6)
The cool gas travels through the suction line which is
attached to the capillary tube. (As mentioned earlier,
these two tubes soldered together create the heat
exchanger.) As this cool refrigerant gas travels through
the suction line it absorbs heat from the warm liquid
refrigerant traveling through the capillary tube, making it a
luke warm gas. The lukewarm refrigerant gas returns to
the compressor where the process begins again.
Figure 4-4. Capillary Tube (Part of Heat Exchanger)
4
Figure 4-6. Suction Line (Part of Heat Exchanger)
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Figure 4-5. Evaporator
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Capillary Tube
Evaporator Accumulator
Suction Line
Heat
Exchanger
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