Service Manual

N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
Air, Water or Remote Service Manual
December 2014
Page 28
Air Cooled Refrigeration
The compressor concentrates the heat from ice
making into high pressure, hot discharge gas. The
high pressure forces the gas to the water cooled
condenser.
At the condenser, refrigerant gas ows through a
serpentine tube that is connected to ns. Room air
is forced by a fan motor through the ns. As the
relatively cooler air comes in contact with the ns and
tubing, heat ows from the hot refrigerant gas into the
ns and tubing and into the cooler air passing over
them. When the refrigerant cools, it condenses into a
liquid.
From the condenser the high pressure liquid
refrigerant ows through the liquid line to the metering
device - a thermostatic expansion valve.
At the expansion valve, liquid refrigerant passes from
a high pressure zone to one of relatively low pressure,
and in the low pressure zone it evaporates.
The low pressure zone where the refrigerant
evaporates is the evaporator. The evaporator is a
vertical metal tube surrounded by a coil of tubing,
which the refrigerant ows through. As refrigerant
evaporates in the coil, it absorbs heat from the metal
parts of the evaporator and the water inside it. As the
auger inside the evaporator turns, ice is continuously
forced out of the evaporator and make up water ows
in.
From the evaporator, the refrigerant, carrying the
heat from ice making, ows back to the compressor
through the suction line, and the cycle continues
Discharge Line
Suction Line
TXV
Evaporator
Compressor
Liquid Line
Air Cooled Condenser
Refrigeration Schematic