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Section 3 - Service and Repair
1175R/1115R
1175WC/1115WC
1175BEV/ADA24R
GENERAL
Refrigerant is pumped from the compressor to the condenser as a
high pressure, high temperature vapor.
As the refrigerant cools in the high pressure condenser, the vapor
condenses to liquid. During this phase change, a great amount of
heat is rejected with the help of the condenser fan.
The liquid then flows to the dryer where it is strained and filtered.
From the dryer, the refrigerant flows through the capillary tube
which meters the liquid refrigerant to the evaporator. The
pressure of the refrigerant is reduced to the evaporating or low
side pressure.
The reduction of pressure on the liquid refrigerant causes it to boil
or vaporize until it reaches saturation temperature. As the low
temperature refrigerant passes through the evaporator coil, it
continues to absorb a lot of heat, causing the boiling action to
continue until the refrigerant is completely vaporized. It is during
this phase that the most heat is absorbed (the cooling takes place)
in the refrigerator.
The refrigerant vapor leaving the evaporator travels through the
suction line to the compressor inlet. The compressor takes the
low pressure vapor and compresses it, increasing both pressure
and temperature. The hot high pressure gas is pumped out the
discharge line and into the condenser. The cycle continues
Figure 23. 1175R/1115R/1175WC//1115WC1175BEV/ADA24R Normal Vapor/Compression Cycle
These are some additional general notes and exceptions: • The unit is equipped with a four-minute compressor off cycle.
CAPILLARY TUBE
DRYER
CONDENSER
COMPRESSOR
EVAPORATOR
ULIN_0280_A