Testing A Gas Safety Valve - Whirlpool 4322452 Service Manual

TESTING A GAS SAFETY VALVE

Some gas ranges use an electrically-controlled gas safety valve to control the flow of gas to the
oven burner. The electric safety valve controls the gas flow by means of a bimetal-controlled
diaphragm. Self-clean models have a single inlet, dual outlet, bimetal-operated safety valve. To
prevent miswiring, the bake and broil terminals are sized differently. Several typical safety valves
are shown in Figures 6-9 through 6-11. To test a gas safety valve:
1. Turn off the gas and electrical power to the range.
2. Set the ohmmeter to the R x 1 position.
3. Disconnect the wires from the bake and broil terminals.
4. Touch the meter leads to each set of terminals. The meter should indicate a low resistance
reading of between 1Ω and 5Ω. If the meter indicates an open circuit, or a high resistance,
replace the valve.
Figure 6-9
Figure 6-11
Orifice Hood
Heater Sensing
Bulb & Capillary Tube
Standing-Pilot Safety Valve
Terminals
Figure 6-10
Combination Bake/Broil
Gas Safety Valve
Broil Terminals
Dual Gas Safety Valve
Page 6-9
Gas Inlet
Bake Terminals