Refrigeration; Cooling Thermostat; Compressor; Condenser - Cornelius 15 Gallon Single-Flavor Visual Display Dispenser J15 Training Manual

3. R
EFRIGERATION

3.1 Cooling Thermostat

There is one thermostat on all of the cold product units. This thermostat is located
against the evaporator coil of the unit. On the JT20 and JT30 units the thermostat is
mounted against the right hand evaporator coil when facing the front of the unit.
The cooling or frost pattern for the JT30 flows from the center to the left then to
the right. Upon reaching a predetermined temperature, the unit will cycle. All ther-
mostats are factory set and normally need no adjustment.

3.2 Compressor

Moves the refrigerant through the system. Pressurizes the refrigerant for heat dissi-
pation in the condenser and ultimately heat removal by evaporation in the bowl's
evaporator.

3.3 Condenser

Dissipates heat from the compressor and prepares the high pressure refrigerant for
the capillary tube and ultimately the evaporator.

3.4 Condenser Cleaning

It is very important to do this on an annual basis and as required. The condenser
can be cleaned with a brush or compressed air. There are commercial condenser
cleaners on the market that are acceptable.

3.5 Filter Replacement

The Jet Spray unit comes with a foam type filter mounted on the inside of the side
panel assembly. JT30 models have a filter mounted inside the rear panel of the
chassis. These filters should be periodically removed and washed in warm soapy
solution to remove dust and derbies.

3.6 Condenser Fan

Draws air through the condenser coils and over the compressor to facilitate heat
removal.

3.7 Dryer

Cleans and removes moisture from the refrigeration system. The dryer should
always be replaced whenever servicing or opening a refrigeration system. When
ordering a dryer, specify model number and refrigerant type (or serial number) to
insure the correct dryer is received.
© 2000, IMI Cornelius Inc.
Jet Spray (Cold) Training Manual
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