Wolf WKGC 126622, WKGX 126623 Roast & Hold Standard on Computer Model, Roast Cycle Normal Cooking

FULL SIZE GAS CONVECTION OVENS - ELECTRICAL OPERATION

2. Power Switch (S1) turned to OVEN COOL.						a. Power (24VAC) to one side of
NOTE: With door switch contacts OPEN (doors						the following components: heat
						relay (R3) normally open (N.O.)
open), the convection fan motor will still run and
						contacts, high limit --- connected
continue to cool the oven. However, power would be
						through the normally closed
removed from the following components: Power ON
						(N.C.) contacts to the 1st valve
light (goes out), Normal ROAST timer, ROAST &						(safety) on the dual solenoid gas
HOLD timer, transformer T1 (de-energized) and to
						valve.
the component cooling fan.
						a) 1st valve (safety) on the gas
A.	Power to motor speed (Hi/Low) relay (R1)
						valve energized.
	normally open (N.O.) contacts and to
	common (C) on hold relay (R2). Power is					NOTE: Gas does not flow to the
	then connected through hold relay (R2)					burner until the 2nd valve (main)
	normally closed (N.C.) contacts to motor					is energized.
	speed (Hi/Low) relay (R1) coil.					3) Component cooling fan.
	1) Motor speed (Hi/Low) relay (R1) is
				4.	The oven will remain in this condition until the
	energized and contacts change state.
					power switch (S1) is turned to the OFF or ON
	a. Power is connected through
					position.
	motor speed (Hi/Low) relay			WKGC, WKGCX
	normally open (N.O.) contacts,
				(Roast & Hold Standard on Computer Model)
	through function switch (S3) to
	Convection fan motor.			Schematic diagram 10835 will be used to explain the
	a)	Convection fan motor
				electrical sequence of operation for both the ROAST
		energized.		cycle (normal cooking) and the ROAST & HOLD
	NOTE: If function switch (S3) is			cycle.
	set to Normal ROAST cycle, fan			Roast Cycle (Normal Cooking)
	speed will be high; if set to			1.	Conditions.
	ROAST & HOLD cycle, fan
	speed will be low.				A.	Oven connected to correct voltage.
	b) When Convection fan motor					1) L1 (HOT) to power switch (S1).
		reaches operating speed the				2) L2 (NEUTRAL or SECOND LINE) to
		centrifugal switch on the
						one side of the following components:
		motor closes but no power
						oven cavity lights, convection fan
		is available for connection to
						motor common (C), transformer
		other components.
						primary (T1), component cooling fan
B. Power to one side of the hold thermostat
						and the heat relay coil (R1).
	contacts but is not transferred to other				B.	Oven properly grounded.
	components due to oven cavity
	temperature above 160°F (thermostat					1) Ground (GND) to one side of the
	OPEN).					following components: computer
C.	Power to terminal 7 on the solid state					control case, NO IGNITION light,
						transformer secondary (T1), ignition
	temperature control but is not transferred
						control module, the 1st valve (safety)
	to other components due to temperature					and 2nd valve (main) on the dual
	control not being powered.					solenoid gas valve and computer
3. If door switch is CLOSED (doors closed), power
						control pin 9 (C3-9).
is supplied to one side of the following					C.	Gas supply valve ON.
components: Power ON light (Amber), oven
light switch (S2), Normal ROAST timer terminal					D.	Gas combination control valve ON.
1, ROAST & HOLD timer terminal 1,					E.	Power switch (S1) OFF.
transformer primary (T1) and component
cooling fan.					F.	Computer control is setup properly and
	1) Power ON light (Amber) comes ON.					ready to use.
					G.	Oven light switch (S2) ON/OFF (position
	2) Transformer (T1) energized.
						has no affect on the function of the ROAST
						cycle).
					H.	High limit switch CLOSED.
F32700 (February 2006)			Page 44 of 64