Wolf WKGCX 126625 WKGD, Wkgdx With Roast & Hold Option Solid, State Temperature Control

FULL SIZE GAS CONVECTION OVENS - ELECTRICAL OPERATION

		trial cycle repeats after a 15			E.	Power switch (S1) OFF.
		second purge between			F.	Function switch (S3) set to Normal ROAST
		cycles for two additional
						cycle.
		tries before locking out. To
					G.	Oven light switch (S2) ON/OFF (position
		reset after a lockout, turn
		power switch (S1) OFF then				has no affect on the function of the Normal
		ON.				ROAST cycle).
5. Oven reaches the fixed HOLD temperature and					H.	Temperature control dial set to lowest
	the hold thermostat opens.					temperature (fully counterclockwise).
	A. Heat light goes out.				I. High limit switch CLOSED.
	B. Power removed from heat relay (R3) and				J. Roast timer (normal cooking) in the OFF
		the contacts open (N.O.).				position.
		1) Ignition control module de-energized.			K. Roast and Hold timer in the OFF position.
		a. Power removed from 2nd valve			L.	Oven doors Closed.
		(main) on the gas valve and gas				1) Door switch contacts CLOSED.
		flow to the burner stops.
					M.	Oven cavity temperature below 140°F.
	C. Power is also removed from motor speed
				2.	Set temperature control dial to desired ROAST
		relay (R1).
		1) Convection fan motor de-energized			then HOLD temperature (Roast & Hold
					cooking).
		and fan stops rotating.
				3.	Power switch (S1) turned ON.
6.	The oven will continue to cycle on the hold
					A.	Component cooling fan energized.
	thermostat until the ROAST & HOLD timer is
	turned to the OFF position, the function switch				B.	Power ON light (Amber) comes ON.
	(S3) is changed back to ROAST (normal
					C.	Power to one side of the following
	cooking) or the power switch (S1) is turned to
	the OFF or OVEN COOL position.					components: Normal ROAST timer
WKGD, WKGDX With Roast & Hold Option (Solid						terminal 1, ROAST & HOLD timer terminal
						1, transformer primary (T1).
State Temperature Control)
					NOTE: Power is available to the oven light
Schematic diagram 10834 will be used to explain the
					switch (wire #20) to turn the oven cavity lights
electrical sequence of operation for both the Normal
					ON when the light switch is turned ON; and
ROAST cycle (normal cooking) and the ROAST &
					power is available to the normally open N.O.
HOLD cycle.
					side (wire #28) of the door switch contacts and
Normal Roast Cycle					connects power to additional components when
1.	Conditions.				the door switch contacts are CLOSED (door
					closed).
	A.	Oven connected to correct voltage.
						1) Transformer (T1) energized.
		1) L1 (HOT) to power switch (S1).
						a. Power (24VAC) to one side of
		2) L2 (NEUTRAL or SECOND LINE) to				the following components: heat
		one side of the following components:				relay (R3) normally open (N.O.)
		power ON light, heat light,				contacts, high limit --- connected
		temperature control board terminal 9				through the normally closed
		(120VAC) or terminal 10 (208-				(N.C.) contacts to the 1st valve
		240VAC), oven cavity lights, buzzer,				(safety) on the dual solenoid gas
		ROAST timer motor (normal cooking),				valve.
		ROAST & HOLD timer motor, heat				a) 1st valve (safety) on the gas
		relay coil (R3), convection fan motor				valve energized.
		common (C), transformer primary
						NOTE: Gas does not flow to the
		(T1), motor speed (Hi/Low) relay coil
		(R1), hold relay coil (R2) and the				burner until the 2nd valve (main)
		component cooling fan.				is energized.
	B.	Oven properly grounded.				2) With door switch closed, power is
	C.	Gas supply valve ON.				applied to motor speed (Hi/Low) relay
						(R1) normally open (N.O.) contacts
	D. Gas combination control valve ON.					and hold relay (R2) common (C).
			Page 39 of 64				F32700 (February 2006)