Compressor Information - U-Line U-3018RFOL-00 Service Manual

Troubleshooting

Compressor Information

Cooling process
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.
CONDENSER
24
COMPRESSOR
DRYER
CAPILLARY TUBE
U-Line Service
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
EVAPORATOR