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FULL SIZE GAS CONVECTION OVENS - ELECTRICAL OPERATION
F32700 (February 2006) Page 30 of 64
Temperature Probe ............ Senses the oven temperature for the solid state temperature control or the
computer control. On WKGD/WKGDX models, converts the temperature
into a resistance valve which is monitored by the temperature control board.
The probe is an RTD (resistance temperature detector) of the Thermistor
type. As temperature increases the resistance value decreases.
On WKGC/WKGCX models, the probe is a J type thermocouple.
Gas Valve (Dual Solenoid)....... Allows gas flow to the burner when the 1
st
valve (safety) and 2
nd
valve
(main) solenoid coils are both energized.
Cooling Fan................... Circulates cooler air from rear of oven forward to cool components in the
control area.
Mechanical Temperature Control
KX Thermostat (WKG/WKGX) .... Regulates the oven cavity temperature by controlling the heat relay (R3)
through the blower motor centrifugal switch contacts. On ROAST & HOLD
models only, power is first connected through one set of (R4) normally
closed contacts (N.C.) then through the centrifugal switch contacts on the
motor.
Hold Thermostat (KX) .......... Holds the oven cavity temperature at 160°F after ROAST (then hold) time
expires. For the oven to operate on the Hold thermostat, the ROAST &
HOLD timer must be used and the Function Switch (S3) must be set to.
Available on models with Roast & Hold option only.
COMPONENT LOCATION