Vulcan-Hart SG4D service manual General

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GENERAL

INTRODUCTION

Procedures in this manual will apply to all models unless specified. Pictures and illustrations can be of any model unless the picture or illustration needs to be model specific. All models are equipped with a two-speed 1/2 HP electric motor, porcelain interior and two 30,000 BTU/hr burners as standard equipment. A power level control permits variable burner input from 15,0000 BTU/hr to 60,000 BTU/hr.

Models SG4D and SG6D are equipped with solid state-controls and a 60-minute timer (a 5-hour timer is optional). Models SG4C and SG6C have a computer control with built-in Roast & Hold.

Models SG6D and SG6C have a 4" deeper cavity than models SG4D and SG4C.

INSTALLATION

Generally, installations are made by the dealer or contracted by the dealer or owner. Detailed installation instructions are included in the Installation & Operation Manual which is sent with each unit.

Gas Data

Model

Input BTU/hr

Manifold Pressure

SG4D,

Natural

LP Gas

Natural

LP Gas

SG4C,

 

 

 

 

SG6D,

60,000

60,000

3.5" W.C.

10" W.C.

SG6C

(0.9 kPa)

(2.2 kPa)

 

 

 

 

 

 

 

OPERATION

Detailed operation instructions are included with each oven.

CLEANING

Detailed cleaning procedures are included in the Installation & Operation Manual for the appropriate model.

LUBRICATION

Motor bearings are sealed and prelubricated.

SPECIFICATIONS

Electrical Data

Model

Volts

Hertz

Phase

Amps

 

 

 

 

 

SG4D

120

60

1

7.5

SG4C

 

 

 

 

208

60

1

3.6

SG6D

 

 

 

 

SG6C

240

60

1

3.75

 

 

 

 

 

TOOLS

Standard

•Hand tools (standard set).

•VOM with AC current tester (any quality VOM with a sensitivity of at least 20,000 ohms per volt can be used).

•Gear puller to remove blower.

Special

•Temperature tester (thermocouple type).

•Manometer

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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 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
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