Wolf WKG 126620, WKGDX 126624, WKGX 126623, WKGC 126622 Sequence of Operation, Normal Roast Cycle

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FULL SIZE GAS CONVECTION OVENS - ELECTRICAL OPERATION

SEQUENCE OF OPERATION

WKG, WKGX With Roast & Hold Option

(Mechanical KX Thermostat)

Schematic diagram 10832 will be used to explain the electrical sequence of operation for both the Normal ROAST cycle (normal cooking) and the ROAST & HOLD cycle.

Normal Roast Cycle

1.Conditions.

A.Oven connected to correct voltage.

1)L1 (HOT) to power switch (S1).

2)L2 (NEUTRAL or SECOND LINE) to one side of the following components: power ON light, heat light, oven cavity lights, buzzer, ROAST timer motor (normal cooking), ROAST & HOLD timer motor, heat relay coil (R3), convection fan motor common (C), transformer primary (T1), relay coil (R4), motor speed (Hi/Low) relay coil (R1), hold relay coil (R2) and the component cooling fan.

B.Oven properly grounded.

C.Gas supply valve ON.

D.Gas combination control valve ON.

E.Power switch (S1) OFF.

F.Function switch (S3) set to Normal ROAST cycle.

G.Oven light switch (S2) ON/OFF (position has no affect on the function of the Normal ROAST cycle).

H.Control thermostat dial in the OFF position (OPEN).

I.High limit switch CLOSED.

J.Roast timer (normal cooking) in the OFF position.

K.Roast and Hold timer in the OFF position.

L.Oven doors CLOSED.

1)Door switch contacts CLOSED.

M.Oven cavity temperature below 140°F.

2.Set thermostat to desired Normal ROAST temperature (normal cooking).

A.Internal contacts close.

3.Power switch (S1) turned ON.

A.Power to motor speed (Hi/Low) relay (R1) normally open (N.O.) contacts and hold relay (R2) common (C).

B.Component cooling fan energized.

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C.Power ON light (Amber) comes ON.

D.Power to one side of the following components: Normal ROAST timer terminal 1, ROAST & HOLD timer terminal 1, transformer primary (T1).

NOTE: Power is available to the oven light switch (wire #20) to turn the oven cavity lights ON when the light switch is turned ON; and power is available to the normally open N.O. side (wire #28) of the door switch contacts and connects power to additional components when the door switch contacts are CLOSED (door closed).

1)Transformer (T1) energized.

a.Power (24VAC) to one side of the following components: heat relay (R3) normally open (N.O.) contacts, high limit --- connected through the normally closed (N.C.) contacts to the 1st valve (safety) on the dual solenoid gas valve.

a)1st valve (safety) on the gas valve energized.

NOTE: Gas does not flow to the burner until the 2nd valve (main) is energized.

2)With door switch closed, power is connected back through a second set of contacts on the power switch (S1), through the thermostat contacts, through one set of relay R4 normally closed (N.C.) contacts, to one side of the centrifugal switch on the convection fan motor.

a.Heat light (clear) comes ON.

3)Power is also connected through the other set of relay R4 normally closed (N.C.) contacts to the other side of motor speed relay (R1).

a.Motor speed relay (R1) energized, contacts change state and the normally open (N.O.) set of contacts close.

a)Power is connected through the function switch (S3) contacts and the convection fan motor is energized (fan speed Hi).

F32700 (February 2006)

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Contents WKG Series Full Size GAS Convection Ovens Table of Contents Computer Control Models Only Tools Installation Operation Cleaning LubricationSpecifications IntroductionControl Panel Covers and PanelsTop Front Cover Bottom Front CoverControl Panel Components Removable Components ProcedureComponent Panel Components GAS Burner Temperature Probe WKGD/WKGDXGAS Solenoid Valve GAS OrificeSpark Igniter Flame Sense Ignition Control ModuleBlower and Motor Oven Doors and Bearings Independent Doors Oven Doors Simultaneous Doors Assembly RemovalDoor Window Door Catch Ball Assembly Independent DoorsDisassembly Door Switch Lamp High Limit ThermostatInterior Lights Cooling FAN Lamp AssemblySolid State Temperature Control Calibration WKGD/WKGDX Service Procedures and AdjustmentsMechanical Thermostat Calibration WKG/WKGX Solid State TemperatureTemperature Probe Test WKGD/WKGDX Temperature Probe Test WKGD/WKGDXTemp F Ohms GAS Pressure AdjustmentVerification of Spark AT Ignitor Door Switch AdjustmentBlower Adjustment Door Catch Ball Adjustment Independent Doors Door AdjustmentIntroduction ProcedureComputer Control WKGC/WKGCX Operation Setup ModeSolid State Relay Test Computer Control Calibration WKGC/WKGCXProbe Test Component Function Function Switch S3Door Switch Computer Control Solid State Temperature ControlBlower Motor Motor Speed Relay R1Gas Valve Dual Solenoid Temperature ProbeMechanical Temperature Control Component LocationWKG/WKGX Plug, Socket and Components Standard Controls WKGD/WKGDX Plug, Socket and Components Standard Controls Full Size GAS Convection Ovens Electrical Operation WKGC/WKGCX Plug, Socket and Components Roast & Hold Standard Normal Roast Cycle Sequence of OperationWKG, Wkgx With Roast & Hold Option Mechanical KX Thermostat Roast and Hold Cycle Timer Cycle Normal Roast CookingFull Size GAS Convection Ovens Electrical Operation Timer Cycle Roast & Hold Cooking WKGD, Wkgdx With Roast & Hold Option Solid State Temperature ControlTimer Cycle Normal Roast Cooking Roast and Hold Cycle Timer Cycle Roast & Hold Cooking Oven Cool Cycle Solid State Temperature Control Roast Cycle Normal Cooking Roast & Hold Standard on Computer ModelFull Size GAS Convection Ovens Electrical Operation Oven Cool Cycle Computer Control Model Temperature and Time Cycle CookingWKG, Wkgx Mechanical KX Controls SchematicsWKG, Wkgx Mechanical KX Controls, Roast & Hold Option WKGD, Wkgdx Solid State Temperature Control Full Size GAS Convection Ovens Electrical Operation WKGC, Wkgcx Computer Control Roast & Hold Standard Wiring Diagrams Full Size GAS Convection Ovens Electrical Operation WKG, Wkgx Mechanical KX Controls, Roast & Hold Option Full Size GAS Convection Ovens Electrical Operation WKGD, Wkgdx Solid State Temperature Control Full Size GAS Convection Ovens Electrical Operation Full Size GAS Convection Ovens Electrical Operation Full Size GAS Convection Ovens Electrical Operation WKGC, Wkgcx Computer Control Roast & Hold Standard Full Size GAS Convection Ovens Electrical Operation ALL Models TroubleshootingComputer Control Models only Error CodesDescription Condensed Spare Parts List
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