Vulcan-Hart SG4D service manual Ignition Control Module, Spark Igniter and Flame Sense

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IGNITION CONTROL MODULE

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

1.Remove the right side cover as outlined under Covers and Panels.

2.Loosen the screws securing the mounting bracket to the component panel and remove the bracket.

3.Disconnect the lead wires and igniter cables from the ignition module board.

4.Remove the ignition module board from the mounting bracket.

5.Reverse the procedure to install the replacement ignition module board.

6.Check for proper operation.

SPARK IGNITER AND FLAME SENSE

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

Shut off the gas before servicing the oven.

1.Remove the two gas burners as outlined under Gas Burners.

2.Remove the screws securing the igniter and flame sense to each burner. Remove the assembly.

3.The spark gap is 1/8" from the inside of the spark rod to the inside to the ground rod. The ground rod (the end of the spark) is 1/8" above the burner. If the gap is not correct or poor sparking is occurring, then adjust accordingly.

4.Reverse the procedure to install the assembly and check for proper operation.

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Contents SG4 & SG6 Series Full Size GAS Convection Ovens VULCAN-HART Table of Contents Table of Contents General Component Location Removal and Replacement of PartsTop Front Cover Covers and PanelsBottom Front Cover Right Side PanelSG4D/SG6D SG4C/SG6C Control Panel ComponentsComponent Panel Components SG4C/SG6C Temperature Probe Shown Temperature ProbeGAS Burners GAS Solenoid Valve GAS OrificeSpark Igniter and Flame Sense Ignition Control ModuleBlower and Motor Oven Doors and Bearings Door Catch Roller Assembly Independent Doors Roller Latch Assembly Independent DoorsDoor Window Door Switch High Limit Thermostat Lamp AssemblyInterior Lights Cooling FAN Fan Installation TipsSolid State Temperature Controller Test SG4D/SG6D Service Procedures and AdjustmentsTest Steps Calibration Steps Solid State Temperature Control Calibration SG4D/SG6DTemp F Ohms Temperature Probe Test SG4D/SG6DComputer Controller SG4C/SG6C Operation Setup ModeProbe Test Solid State Relay Test Computer Control Calibration SG4C/SG6CGAS Pressure Adjustment Verification of Spark AT Ignitor Door Switch AdjustmentFlame Current Measurement Blower AdjustmentDoor Strike Adjustment Independent Doors Door AdjustmentDoor Catch Roller Adjustment Component Description Electrical OperationPlug, Socket and Components SG4D/SG6D Front ViewFront View Control Panel Component PanelPlug, Socket and Components SG4C/SG6C Sequence of Operations SG4D/SG6D with Solid State Temperature ControllerCook Cycle Cool Down Cycle Solid State Temperature Controller Timer CycleNormal Cook Cycle SG4C/SG6C with Computer ControllerPage Roast and Hold Cycle Temperature and Time Cycle Normal CookingWiring Diagrams 426574 Rev. C Thermostat SchematicsGAS Convection Oven SG4 with Watlow 734 Control Symptoms Possible Causes TroubleshootingSymptoms Possible Causes Computer Control Models only Symptom Possible CausesError Codes Probable Cause Solution Problem