Wolf WKGX 126623, WKGDX 126624, WKGC 126622 Full Size GAS Convection Ovens Electrical Operation

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FULL SIZE GAS CONVECTION OVENS - ELECTRICAL OPERATION

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 controlling thermostat to desired ROAST then Hold temperature (Roast & Hold cooking).

NOTE: This is considered first stage cooking in the ROAST & HOLD cycle.

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.

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 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 another 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)Convection fan motor energized (fan speed low).

NOTE: In the ROAST & HOLD cycle, the fan speed is fixed at low.

b.When the convection fan motor reaches operating speed, the centrifugal switch on the motor closes. The heat relay (R3) is then energized, R3 relay contacts normally open (N.O.) close and the heating circuit is powered.

a)Ignition control module is energized.

b)No ignition light (red) comes ON, module performs a self diagnostic test for 4 seconds, 2nd valve (main) on the gas valve is energized. Gas starts to flow to the burner, sparking begins, the NO IGNITION light goes out and burner lights. Sparking continues for up to 7 seconds or until a flame is established. If a flame is SENSED, the NO IGNITION light stays out and burner remains lit.

If a flame is not SENSED after 7 seconds of sparking, the NO IGNITION light comes back on, 2nd valve (main) on the gas valve is de-energized and gas flow to the burner stops. Ignition trial cycle repeats after a 15 second purge between cycles for two additional tries before locking out. To reset after a lockout, turn power switch (S1) OFF then ON.

4.Oven reaches set temperature and controlling thermostat opens.

A.Heat light goes out.

B.Power removed from heat relay (R3).

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F32700 (February 2006)

 

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Contents WKG Series Full Size GAS Convection Ovens Table of Contents Computer Control Models Only Specifications Installation Operation Cleaning LubricationIntroduction ToolsTop Front Cover Covers and PanelsBottom Front Cover Control PanelControl 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 RemovalDisassembly Door Catch Ball Assembly Independent DoorsDoor Window Door Switch Interior Lights High Limit ThermostatLamp 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 ModeProbe Test Computer Control Calibration WKGC/WKGCXSolid State Relay Test Door Switch Function Switch S3Component Function Blower Motor Solid State Temperature ControlMotor Speed Relay R1 Computer ControlMechanical Temperature Control Temperature ProbeComponent Location Gas Valve Dual SolenoidWKG/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 WKG, Wkgx With Roast & Hold Option Mechanical KX Thermostat Sequence of OperationNormal Roast Cycle 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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