Wolf WKGDX 126624, WKGX 126623, WKGC 126622, WKGCX 126625 Service Procedures and Adjustments

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FULL SIZE GAS CONVECTION OVENS - SERVICE PROCEDURES AND ADJUSTMENTS

SERVICE PROCEDURES AND ADJUSTMENTS

WARNING: CERTAIN PROCEDURES IN THIS SECTION REQUIRE ELECTRICAL TEST OR MEASUREMENTS WHILE POWER IS APPLIED TO THE MACHINE. EXERCISE EXTREME CAUTION AT ALL TIMES. IF TEST POINTS ARE NOT EASILY ACCESSIBLE, DISCONNECT POWER AND FOLLOW LOCKOUT/TAGOUT PROCEDURES, ATTACH TEST EQUIPMENT AND REAPPLY POWER TO TEST.

SOLID STATE TEMPERATURE

CONTROL CALIBRATION

(WKGD/WKGDX)

1.Place a thermocouple in the geometric center of the oven cavity.

2.Set the ON-OFF-OVEN COOL switch to ON.

3.Set the temperature control dial to 350°F.

4.Allow the oven temperature to stabilize (normally 3 cycles).

5.Record the temperature at which the Heat lamp goes OFF and comes ON for at least two complete heating cycles.

6.Calculate the differential by subtracting the temperature indicated when the lamp goes out from the temperature indicated when the lamp comes on.

A.The differential calculated should be less than 20 °F.

1)If the differential is less than 20 °F, the temperature control circuit is functioning properly.

a.Proceed to step 7.

2)If the differential is more than 20 °F:

a.Check the temperature probe as outlined under TEMPERATURE PROBE TEST (WKGD/WKGDX).

b.If the probe is functioning properly then temperature control is malfunctioning.

a)Install a replacement temperature control and check calibration.

7.Calculate the average temperature by adding the temperature indicated when the lamp goes out to the temperature indicated when the lamp comes on and dividing this answer by 2.

A.If the average temperature is less than

10 °F from the dial setting, the thermostat is properly calibrated.

B.If the average temperature is more than

10 °F from the dial setting, the thermostat calibration must be adjusted.

1)Loosen the temperature control knob set screw and remove the knob from the stem.

2)Loosen temperature control mounting screws only enough to rotate the control.

a.Place thumb and forefinger on the head of the mounting screws, apply pressure and slightly rotate the screw heads (body of control) in the slot. Rotate clockwise to increase temperature and counterclockwise to decrease.

b.Center the stem in the opening and re-tighten the temperature control mounting screws.

c.Replace knob and re-tighten set screw .

d.Rotate the knob to the lowest temperature setting then back to 350°F.

e.Repeat the average temperature calculation in step 7.

NOTE: Allow the oven to cycle at least two times between adjustments before performing the calculation.

a)If the average temperature still differs more than 10 °F from the dial setting, adjust the thermostat calibration until the average temperature is within tolerance.

C.If the above adjustment cannot be obtained, replace the temperature control and check calibration.

F32700 (February 2006)

 

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Contents WKG Series Full Size GAS Convection Ovens Table of Contents Computer Control Models Only Introduction Installation Operation Cleaning LubricationSpecifications ToolsBottom Front Cover Covers and PanelsTop Front Cover Control PanelRemovable Components Procedure Control Panel ComponentsComponent Panel Components Temperature Probe WKGD/WKGDX GAS BurnerGAS Orifice GAS Solenoid ValveIgnition Control Module Spark Igniter Flame SenseBlower and Motor Oven Doors and Bearings Independent Doors Assembly Removal Oven Doors Simultaneous DoorsDoor Catch Ball Assembly Independent Doors DisassemblyDoor Window Door Switch High Limit Thermostat Interior LightsLamp Lamp Assembly Cooling FANService Procedures and Adjustments Solid State Temperature Control Calibration WKGD/WKGDXSolid State Temperature Mechanical Thermostat Calibration WKG/WKGXTemperature Probe Test WKGD/WKGDX Temperature Probe Test WKGD/WKGDXGAS Pressure Adjustment Temp F OhmsDoor Switch Adjustment Verification of Spark AT IgnitorBlower Adjustment Door Adjustment Door Catch Ball Adjustment Independent DoorsProcedure IntroductionOperation Setup Mode Computer Control WKGC/WKGCXComputer Control Calibration WKGC/WKGCX Probe TestSolid State Relay Test Function Switch S3 Door SwitchComponent Function Motor Speed Relay R1 Solid State Temperature ControlBlower Motor Computer ControlComponent Location Temperature ProbeMechanical Temperature Control 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 Sequence of Operation WKG, Wkgx With Roast & Hold Option Mechanical KX ThermostatNormal Roast Cycle Timer Cycle Normal Roast Cooking Roast and Hold CycleFull Size GAS Convection Ovens Electrical Operation Timer Cycle Roast & Hold Cooking State Temperature Control WKGD, Wkgdx With Roast & Hold Option SolidTimer Cycle Normal Roast Cooking Roast and Hold Cycle Timer Cycle Roast & Hold Cooking Oven Cool Cycle Solid State Temperature Control Roast & Hold Standard on Computer Model Roast Cycle Normal CookingFull Size GAS Convection Ovens Electrical Operation Temperature and Time Cycle Cooking Oven Cool Cycle Computer Control ModelSchematics WKG, Wkgx Mechanical KX ControlsWKG, 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 Troubleshooting ALL ModelsError Codes Computer Control Models onlyCondensed Spare Parts List Description
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