Wolf WKGX 126623, WKGDX 126624, WKGC 126622 Oven Cool Cycle Solid State Temperature Control

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FULL SIZE GAS CONVECTION OVENS - ELECTRICAL OPERATION

a.Power to one side of hold thermostat.

NOTE: When temperature is above 160°F (±12) the hold thermostat contacts are open.

3)Motor speed relay (R1) de-energized, (R1) contacts change state and the normally open (N.O.) contacts OPEN.

a.Convection fan motor stops and centrifugal switch (N.O.) on motor OPENS.

a)Heat relay (R3) de- energized, relay (R3) contacts open and oven heating stops.

NOTE: This is considered second stage cooking in the ROAST & HOLD cycle where the stored heat in the oven continues to cook the product.

4.Oven temperature falls below 160°F (±12) and hold thermostat contacts close.

A.Heat light comes ON.

B.Motor speed relay (R1) is energized, (R1) contacts change state and the normally open (N.O.) contacts CLOSE.

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

C.Power is also applied to one side of the centrifugal switch on the convection fan motor through the temperature control internal relay (N.O.) contacts.

D.When the convection fan motor reaches operating speed, the centrifugal switch on the motor closes.

1)Heat relay (R3) is energized.

a.Heat relay (R3) contacts (N.O.) close and the heating circuit is powered.

a)Ignition 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.

5.Oven reaches the FIXED hold temperature and hold thermostat opens.

A.Heat light goes out.

B.Power removed from heat relay (R3) and the contacts open (N.O.).

1)Ignition control module de-energized.

a.Power removed from 2nd valve (main) on the gas valve and gas flow to the burner stops.

C.Power is also removed from motor speed relay (R1).

1)Convection fan motor de-energized and fan stops rotating.

6.The oven will continue to cycle on the hold thermostat until the ROAST & HOLD timer is turned to the OFF position and the function switch (S3) is change back to ROAST (normal cooking) or the power switch (S1) is turned to the OFF or OVEN COOL position.

Oven Cool Cycle (Solid State Temperature Control)

NOTE: The electrical sequence of operation for the OVEN COOL cycle is written for ovens with the ROAST & HOLD option.

1.Conditions.

A.Oven is ON.

B.Oven cavity temperature needs to be lowered.

C.Doors are open.

1)Door switch contacts OPEN.

D.Roast and Hold timer in the OFF position.

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

F.Function switch (S3) set to either Normal ROAST cycle or ROAST & HOLD cycle.

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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 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 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 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 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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