Cornelius Quantum 1000 Información técnica descargar pdf (Pagina 18)

Wilshire Juice Training Manual

5. REFRIGERATION

The two evaporators in our design are independently controlled so that they don’t both

cool at once. This prevents the cabinet or water thermostats from over-cooling one evapo-

rator while trying to satisfy the other. This is accomplished by using two thermostats wired

parallel, a control relay to connect them to the compressor and a liquid line solenoid valve

to isolate the water cooling evaporator during cabinet cooling cycles. During a cabinet

(concentrate) cooling cycle, the water may require cooling. When this occurs, the water

thermostat closes, sending current to the control relay. At this point, the compressor is

already running, so the current is passed on via the red wire leading to the refrigerant sole-

noid valve. Once this valve is opened, refrigerant flow is diverted to the water coil for

cooling. The cooling cycle is relatively short for average incoming water temperatures. If

incoming water is warm, it may become necessary to hook up to a chilled water line from

a beverage system, in order to keep up with peak or high demand periods. Setting the

water thermostat to a colder temperature does not increase the efficiency of the water coil

and may result in the freeze-up of the water coil during off peak hours. Once the water

thermostat is satisfied, the refrigerant solenoid will close and cooling will be restored to

the cabinet.

Water Thermostat

Controls the refrigerant solenoid valve and the cooling of the water evapo-

rator coil. Connects to the normally closed relay terminal.

Concentrate Thermostat

Controls cooling of the concentrate compartment and operation of the start

relay. Connects to the normally open relay terminal and the relay coil.

Note: These thermostats are of different sensitivities and must not be sub-

stituted for one another. The same two parts are used in all models

(all years).

Control Relay

Allows thermostats to individually control compressor operation without

short cycling. This relay is also used in all models (all years).

Refrigerant Solenoid Valve

Cuts off the flow of refrigerant to the water-cooling coil when the water

thermostat is satisfied.

Heat Exchanger Assembly

Consists of the capillary tubes for the concentrate compartment and the

suction line and insulation. The capillary tube is soldered to the suction line

to prevent condensation and balance system pressure. If replacement

becomes necessary, the entire assembly must be replaced as one.

SYSTEM DETAILS

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Cornelius Quantum 1000 Información técnica Pagina 18