Vulcan-Hart SG4D service manual High Limit Thermostat, Interior Lights, Lamp Assembly

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HIGH LIMIT THERMOSTAT

Disconnect the electrical power to the machine and follow lockout / tagout procedures.

1.Remove the top four racks from the oven.

2.Remove the high limit thermostat cover/ mounting plate. It is located at the top of the oven cavity.

3.Disconnect the lead wires from the high limit thermostat. Remove the high limit thermostat from the cover mounting plate.

INTERIOR LIGHTS

Disconnect the electrical power to the machine and follow lockout / tagout procedures.

1.Remove the racks from the oven.

2.Unscrew the glass lens for the light being replaced, then unscrew the bulb.

LENS

LENS

OVEN CAVITY

PL-56054

3.Replace bulb, then reverse the procedure to install.

Lamp Assembly

1.Remove the lens and bulb.

2.Remove the springs from the retaining tabs (two places) on the socket.

RETAINING TABS
SPRING
CROSS SECTIONAL VIEW	PL-56055

4.	Remove the old RTV silicone from the cover	3.	Depress the retaining tabs and pull the socket
4.	Remove the old RTV silicone from the cover		out from the oven, far enough to disconnect
	and mating surfaces inside the oven cavity,		out from the oven, far enough to disconnect
	and mating surfaces inside the oven cavity,		the lead wires.
	and apply new RTV silicone before installing.		the lead wires.
	and apply new RTV silicone before installing.
5.	Reverse procedure to install.	4.	Remove the socket from the oven.
5.	Reverse procedure to install.

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Contents SG4 & SG6 Series Full Size GAS Convection Ovens VULCAN-HART Table of Contents Table of Contents General Removal and Replacement of Parts Component LocationBottom Front Cover Covers and PanelsTop Front Cover Right Side PanelControl Panel Components SG4D/SG6D SG4C/SG6CComponent Panel Components Temperature Probe SG4C/SG6C Temperature Probe ShownGAS Burners GAS Orifice GAS Solenoid ValveIgnition Control Module Spark Igniter and Flame SenseBlower and Motor Oven Doors and Bearings Roller Latch Assembly Independent Doors Door Catch Roller Assembly Independent DoorsDoor Window Door Switch Lamp Assembly High Limit ThermostatInterior Lights Fan Installation Tips Cooling FANService Procedures and Adjustments Solid State Temperature Controller Test SG4D/SG6DTest Steps Solid State Temperature Control Calibration SG4D/SG6D Calibration StepsTemperature Probe Test SG4D/SG6D Temp F OhmsOperation Setup Mode Computer Controller SG4C/SG6CProbe Test Computer Control Calibration SG4C/SG6C Solid State Relay TestGAS Pressure Adjustment Door Switch Adjustment Verification of Spark AT IgnitorBlower Adjustment Flame Current MeasurementDoor Adjustment Door Strike Adjustment Independent DoorsDoor Catch Roller Adjustment Electrical Operation Component DescriptionFront View Plug, Socket and Components SG4D/SG6DControl Panel Component Panel Front ViewPlug, Socket and Components SG4C/SG6C SG4D/SG6D with Solid State Temperature Controller Sequence of OperationsCook Cycle Timer Cycle Cool Down Cycle Solid State Temperature ControllerSG4C/SG6C with Computer Controller Normal Cook CyclePage Temperature and Time Cycle Normal Cooking Roast and Hold CycleWiring Diagrams 426574 Rev. C Schematics ThermostatGAS Convection Oven SG4 with Watlow 734 Control Troubleshooting Symptoms Possible CausesComputer Control Models only Symptom Possible Causes Symptoms Possible CausesError Codes Probable Cause Solution Problem