Vulcan-Hart SG4D service manual GAS Burners

Page 11

GAS BURNERS

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

Shut off the gas before servicing the oven.

1.Remove the lower front cover as outlined under Covers and Panels.

2.There are two burners located on the bottom left and right side of the oven. Disconnect the ignition cable and the flame sense lead from each burner.

3.Remove the bolts securing the gas manifold and place manifold aside.

4. Grasp the burner and lift out.

5.Reverse the procedure to install and check for proper operation.

A. Ensure the spacers are in place on the ignition wires. The spacers are intended to keep the ignition wires from laying flat on the oven chassis.

B.Ensure that the bracket on the back of the burner is inserted into the slot at the rear of the burner chamber.

Note: Check the flame current by following the Flame Current Measurement procedures under the Procedures and Adjustments Section of this manual.

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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 PartsRight Side Panel Covers and PanelsTop Front Cover Bottom Front CoverSG4D/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 Window Roller Latch Assembly Independent DoorsDoor Catch Roller Assembly Independent Doors Door Switch Interior Lights Lamp AssemblyHigh Limit Thermostat Cooling FAN Fan Installation TipsTest Steps Service Procedures and AdjustmentsSolid State Temperature Controller Test SG4D/SG6D Calibration Steps Solid State Temperature Control Calibration SG4D/SG6DTemp F Ohms Temperature Probe Test SG4D/SG6DProbe Test Operation Setup ModeComputer Controller SG4C/SG6C 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 ViewPlug, Socket and Components SG4C/SG6C Control Panel Component PanelFront View Cook Cycle SG4D/SG6D with Solid State Temperature ControllerSequence of Operations 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