Whirlpool SF385PEE W/N, SF395LEE Q/Z/B, TGS325E W, SF385PEE Q/Z, SF372BEE Q/Z Dual GAS Safety Valve

DUAL GAS SAFETY VALVE

Description

The purpose of the gas safety valve is to control gas to the bake and broil burners.

The dual gas safety valve has one gas input and two gas outlets, one for the bake burner, and one for the broil burner. It uses two iden- tical electrically-operated devices, one for each outlet, to control the gas flow. The devices are made of an electric heater coil wrapped around a bimetal strip. One end of the bimetal is riveted to the plate of the valve, and the other end has a rubber seal attached to it that cov- ers a gas outlet. At room temperature, the spring force of the bimetal presses the rubber seal against the gas outlet. When current flows through the heater, heat is applied to the bimetal strip. The amount of heat necessary to warp the bimetal enough to open the valve, requires a minimum of 3.2 amps of current flow in the circuit. The reason the valve is designed not to open below 3.2 amps, is to insure that the temperature of the oven igniter is above 1800˚ F before the valve opens. Only one burner in the oven may be in operation at one time.

Test Procedure

WARNING

Electrical Shock Hazard

Disconnect from electrical supply before ser- vicing unit.

Failure to do so could result in death or electrical shock.

1.Broil burner operates, but the bake burner will not come on.

a)Place the oven in the BAKE mode, set the oven thermostat to 350 degrees, and observe the bake igniter. If the igniter glows, go to step c. If the igniter does not glow, go to step b.

b)Disconnect power, remove the wires from the bake side of the gas safety valve, and connect an ohmmeter across the terminals of the gas safety

valve. If the meter reads approximately 1 Ω, the problem is in another compo- nent of the bake circuit. If the meter reads infinity, replace the gas safety valve.

c)Connect an ampmeter to the bake cir- cuit. If the meter reads less than 3.2 amps, replace the bake igniter. If the meter reads over 3.2 amps, replace the gas safety valve.

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