Theory Of Operation - Whirlpool SF3000SE W Service Manual

THEORY OF OPERATION

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.
PRESSURE
REGULATOR
3
GAS INLET
THE COOKTOP BURNERS
WITH ELECTRONIC IGNITION
LINE VOLTAGE
IGNITOR SWITCH
4
GAS
MANIFOLD
Cooking Products Service Manual
Original July, 1996
© 1996 Whirlpool Corporation
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
120 VAC
TO BURNER
IGNITOR
6
2
GAS VALVE
VENTURI
OFF
1
BURNER
CONTROL
KNOB
2-1
4321890
Page 2-1
BURNER CAP
10
BURNER FLAME
5
9
SPARK
BURNER
IGNITOR
8
BURNER