Whirlpool SF372BEE W/N, SF395LEE Q/Z/B, TGS325E W, SF350BEE W Theory of Operation, Cooktop Burners

Cooking Products Service Manual

Original July, 1996	4321891
© 1996 Whirlpool Corporation	Page 2-1

THEORY OF OPERATION

THE COOKTOP BURNERS

Refer to the illustration below while you read this description.

When a surface burner control knob is turned to the “lite” position, the gas valve r opens, and gas from the pressure regulator s flows into the manifold t, and through the open valve. As gas passes through the valve and its orifice, it is directed into the venturi u, where it mixes with air to create the proper mixture necessary for combustion.

At the same time, line voltage is applied through the ignitor switch v to the ignitor module w, which produces high-voltage pulses to all of the burner ignitors x. The pulses cause a spark y to occur between the burner ignitor and the grounded burner cap z, which ignites the gas and air mixture at the burner head, and produces a flame.

IGNITOR

MODULE 7

BURNER CAP

PRESSURE

REGULATOR

3

GAS INLET

FLOW GAS

10

120 VAC	HIGH VOLTAGE
LINE VOLTAGE
	PULSES

TO BURNER

IGNITOR

IGNITOR SWITCH

			GAS
4	6		FLOW
		2
GAS			5
MANIFOLD		GAS VALVE
			VENTURI
	OFF	LITE

9

SPARK

BURNER IGNITOR

8

BURNER

BURNER FLAME

1

BURNER

CONTROL

KNOB

2-1