Sharp R-323T Spezifikationen PDF herunterladen (Seite 5)

Operation

The controls are designed so that each mode of

operation is independent of the other. All electricity

could be cut off and the refrigerator still operate in

the GAS mode. 12 Volts is not necessary to operate

the control circuit.

Gas Mode

The GAS mode uses a thermocouple system to

produce a self-generating power (milli-volts). The

Thermocouple, when heated by the burner flame,

produces enough milli-volts to hold the safety valve

open. A loss of flame de-energizes the safety valve

and shuts the propane gas down.

An Interrupter device is coupled in series with the

thermocouple so that the milli-amps cannot flow to

the Safety Valve (part of the Control Valve) until the

Interrupter contacts are shunted (jumpered). The

shunt is provided by the Selector switch when it is

switched to GAS mode.

The Selector switch not only serves as a mode se-

lector but also as an interlock between modes so

that two sources of power cannot be energized si-

multaneously.

The GAS mode utilizes an adjustable GAS con-

trol. The control can be manually adjusted to me-

ter the fixed amount of propane gas to the burner

thereby acting as a temperature control to main-

tain cabinet temperature.

Important: Unlike an automatic gas control, this con-

trol does not cycle the flame from high

fire to low fire as with other types of RV

refrigerators. If the cooling load changes,

the GAS control must be manually ad-

justed to maintain the same temperature.

The gas ignition method uses a piezo spark ignitor

- requiring a manual ignition of the burner. See the

Lighting Instructions.

Electric Modes

The AC mode, and DC mode in the case of the 3-

Way model, is thermostatically controlled by a non-

adjustable thermostat. The Thermostat has a capil-

lary sensor attached to the cooling fin. The electric

heater (AC or DC) will cycle in response to the fin

temperature to maintain the cabinet temperature.

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