Vulcan-Hart VC4GC Page 34 Service Manual Download | Manualshive

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FULL SIZE GAS CONVECTION OVENS - ELECTRICAL OPERATION

F24682 (Rev. B, October 2007)

Page 34 of 68

VC4GD/6GD - Plug, Socket and Components (Standard Controls)

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Summary of Contents for VC4GC

Page 1: ...ibed in this manual This manual is not intended to be all encompassing If you have not attended a Vulcan Service School for this product you should read in its entirety the repair procedure you wish t...

Page 2: ...Simultaneous Doors 13 Roller Latch Assembly 14 Door Catch Ball Assembly Independent Doors 15 Door Window 15 Door Switch 16 Mechanical KX Thermostat VC4GS 6GS 16 High Limit Thermostat 16 Interior Ligh...

Page 3: ...46 Cool Down Cycle Computer Control Model 49 Schematics 50 VC4GS VC6GS Mechanical KX Controls 50 VC4GS VC6GS Mechanical KX Controls Roast Hold Option 51 VC4GD VC6GD Solid State Temperature Control 52...

Page 4: ...eous doors are optional with or w o window 2 Stainless steel doors w o window standard 3 Stainless steel doors with window standard INSTALLATION Refer to the Installation and Operation Manual for deta...

Page 5: ...trol Panel 1 Remove three 3 screws on the right side which secure the control panel then pull the panel away from the oven NOTE If the oven has a mechanical KX type thermostat it must be removed from...

Page 6: ...tober 2007 Page 6 of 68 CONTROL PANEL COMPONENTS Removable Components Procedure 1 Remove the control panel as outlined under COVERS AND PANELS 2 Remove the component being replaced 3 Reverse the proce...

Page 7: ...right side panel as outlined under COVERS AND PANELS NOTE If right side panel is not accessible this component can be serviced by removing the control panel as outlined under COVERS AND PANELS 2 Disc...

Page 8: ...l and into the control panel area NOTE The hole in the oven cavity wall does not line up straight with the oven cavity outer shell therefore the probe must be removed at an angle 6 Reverse the procedu...

Page 9: ...ld to the side 3 Remove the gas orifice from the spud on the manifold and replace with the correct orifice for the given altitude 4 Reverse procedure to install and check for proper operation GAS SOLE...

Page 10: ...ODULE Shut off the gas before servicing the unit 1 Remove the right side panel as outlined under COVERS AND PANELS NOTE If right side panel is not accessible this component can be serviced by removing...

Page 11: ...servicing the unit 1 Take out the racks and rack supports 2 Remove screws securing the SNORKEL and remove the snorkel 3 Remove screws securing baffle panel and remove the panel 4 If replacing A Blower...

Page 12: ...ts only 11 Reconnect lead wires at the motor replace conduit and junction box cover NOTE Check data plate on motor for wiring schematic The motor must rotate clockwise when viewed from the shaft end 1...

Page 13: ...r flat to prevent damage 7 The top and bottom bearings are now accessible for inspection and or replacement if needed A If bearings are ok proceed to step 8 B If replacing the top bearing remove the t...

Page 14: ...MENT in SERVICE PROCEDURES AND ADJUSTMENTS Disassembly 1 Remove the door assembly as outlined in OVEN DOORS SIMULTANEOUS under ASSEMBLY REMOVAL 2 Remove the door chain by loosening one of the turnbuck...

Page 15: ...DOOR WINDOW 1 Remove the screws at the top and bottom of door 2 Independent doors A Remove the door handle then remove the outer door panel B Lift out the inner door panel and window assembly NOTE Lef...

Page 16: ...b and mounting screws from the control panel and then remove the control panel 3 Remove the probe guard from the oven cavity wall NOTE When installing the probe should not extend beyond the probe guar...

Page 17: ...2 Unscrew the glass lens for the light being replaced then unscrew the bulb 3 Replace bulb then reverse the procedure to install Lamp Assembly 1 Remove the lens and bulb 2 Remove the springs from the...

Page 18: ...ir deflector to the fan then loosen the tab screw holding the fan to the component panel Rotate the tab so that the fan will clear and remove the fan 4 Reverse the procedure to install the replacement...

Page 19: ...mperature 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...

Page 20: ...wer by 2 A If the average temperature is less than 15EF from the dial setting the thermostat is properly calibrated B If the average temperature is more than 15EF of the dial setting the thermostat ca...

Page 21: ...GD 8 Set the temperature control to the minimum setting NOTE Oven temperature must be above 300 F 9 Check for zero 0 volts AC across terminals 6 9 120VAC or 6 10 208 240VAC for no output from the inte...

Page 22: ...COVERS AND PANELS 2 Remove the plug from the manifold pressure port 3 Install hose barb adapter and attach manometer tube 4 Remove adjustment screw cap from the gas valve and turn gas supply to the o...

Page 23: ...though the sparking circuit is functioning properly 4 Plug the oven in and set the temperature control to the maximum setting 5 Turn the power switch ON 6 Sparking should occur after a 4 second delay...

Page 24: ...e motor mounting bolts 3 Adjust the motor position until the blower is parallel to and 1 4 inch away from the motor mounting plate Check for squareness of the blower to the motor mounting plate at the...

Page 25: ...necessary DOOR STRIKE ADJUSTMENT INDEPENDENT DOORS NOTE For units with serial number starting with 48 made after 8 12 07 and serial number starting with 54 made after 8 26 07 1 Remove top front cover...

Page 26: ...ly to lubricate the internal spring See LUBRICATION under GENERAL 5 Close the doors and check them for proper alignment A Doors should be centered and parallel at the top and bottom in the oven cavity...

Page 27: ...of the sprocket C At the rear of the sprocket one open link of the chain should be partially engaged with a tooth on the sprocket the next open link should not be engaged completely empty and the last...

Page 28: ...l return to operation mode 3 Listed are the parameters and data you should find MENU ALTERNATING ON DISPLAY PARAMETER DATA Celsius_Fahrenheit C_F F Guard Band gb 4000 Temperature Compensation tcnP OFF...

Page 29: ...e variance more than 5 F indicates an adjustment is needed 1 To make the adjustment proceed to step 6 2 If temperature variance is less than 5 F computer control is functioning properly 6 Enter the se...

Page 30: ...e function switch S3 is set to ROAST HOLD this timer must used for ROAST HOLD cooking When the ROAST then hold time expires and the function switch is set to ROAST HOLD this timer is used to transfer...

Page 31: ...ion control module A flame sense current of 0 7 micro amp minimum is required to maintain burner ignition Power On Light Lit whenever the power switch S1 is turned to ON or Cool Down mode Heat Light L...

Page 32: ...FULL SIZE GAS CONVECTION OVENS ELECTRICAL OPERATION F24682 Rev B October 2007 Page 32 of 68 COMPONENT LOCATION...

Page 33: ...FULL SIZE GAS CONVECTION OVENS ELECTRICAL OPERATION F24682 Rev B October 2007 Page 33 of 68 VC4GS 6GS Plug Socket and Components Standard Controls...

Page 34: ...FULL SIZE GAS CONVECTION OVENS ELECTRICAL OPERATION F24682 Rev B October 2007 Page 34 of 68 VC4GD 6GD Plug Socket and Components Standard Controls...

Page 35: ...FULL SIZE GAS CONVECTION OVENS ELECTRICAL OPERATION F24682 Rev B October 2007 Page 35 of 68 VC4GS 6GS VC4GD 6GD Plug Socket and Components Roast Hold Option...

Page 36: ...FULL SIZE GAS CONVECTION OVENS ELECTRICAL OPERATION F24682 Rev B October 2007 Page 36 of 68 VC4GC 6GC Plug Socket and Components Roast Hold Standard...

Page 37: ...Power to motor speed Hi Low relay R1 normally open N O contacts and hold relay R2 common C B Component cooling fan energized C Power ON light Amber comes ON D Power to one side of the following compo...

Page 38: ...pened or the power switch S1 is turned to the OFF or COOL DOWN position Timer Cycle Normal Roast Cooking NOTE The ROAST timer normal cooking operates independently of the heating cycle Additional time...

Page 39: ...onnected through a second set of contacts on the power switch S1 through the thermostat contacts through one set of relay R4 normally closed N C contacts to one side of the centrifugal switch on the c...

Page 40: ...ming stops B Contacts 1 4 close 1 If the oven was heating then the gas burner and heat light go out If the oven was not heating then the gas burner and heat light remain out 2 Hold relay R2 is energiz...

Page 41: ...ower switch S1 2 L2 NEUTRAL or SECOND LINE to one side of the following components power ON light heat light temperature control board terminal 9 120VAC or terminal 10 208 240VAC oven cavity lights bu...

Page 42: ...energize its internal relay The normally open N O contacts close and apply power to the following components a Heat light clear comes ON b Power is connected through the centrifugal switch contacts on...

Page 43: ...ROAST HOLD cycle G Oven light switch S2 ON OFF position has no affect on the function of the ROAST HOLD cycle H Temperature control dial set to lowest temperature fully counterclockwise I High limit...

Page 44: ...D after 7 seconds of sparking the NO IGNITION light comes back on 2nd valve main on the gas valve is de energized and gas flow to the burner stops Ignition trial cycle repeats after a 15 second purge...

Page 45: ...nergized R1 contacts change state and the normally open N O contacts CLOSE 1 Convection fan motor energized fan speed low C Power is also applied to one side of the centrifugal switch on the convectio...

Page 46: ...lly open N O contacts through function switch S3 to Convection fan motor a Convection fan motor energized NOTE If function switch S3 is set to Normal ROAST cycle fan speed will be high if set to ROAST...

Page 47: ...f the following components heat relay R1 normally open N O contacts high limit connected through the normally closed N C contacts to the 1st valve safety on the dual solenoid gas valve a 1st valve saf...

Page 48: ...ently of the heating cycle Additional time can be set or the timer can be stopped and re started throughout the cooking cycle Refer to the Instructions Manual for specific operating instructions of th...

Page 49: ...L DOWN NOTE With door switch contacts OPEN doors open the convection fan motor will still run and continue to cool the oven A Power is connected through power switch S1 to the convection fan motor hig...

Page 50: ...FULL SIZE GAS CONVECTION OVENS ELECTRICAL OPERATION F24682 Rev B October 2007 Page 50 of 68 SCHEMATICS VC4GS VC6GS Mechanical KX Controls...

Page 51: ...FULL SIZE GAS CONVECTION OVENS ELECTRICAL OPERATION F24682 Rev B October 2007 Page 51 of 68 VC4GS VC6GS Mechanical KX Controls Roast Hold Option...

Page 52: ...FULL SIZE GAS CONVECTION OVENS ELECTRICAL OPERATION F24682 Rev B October 2007 Page 52 of 68 VC4GD VC6GD Solid State Temperature Control...

Page 53: ...FULL SIZE GAS CONVECTION OVENS ELECTRICAL OPERATION F24682 Rev B October 2007 Page 53 of 68 VC4GD VC6GD Solid State Temperature Control Roast Hold Option...

Page 54: ...FULL SIZE GAS CONVECTION OVENS ELECTRICAL OPERATION F24682 Rev B October 2007 Page 54 of 68 VC4GC VC6GC Computer Control Roast Hold Standard...

Page 55: ...FULL SIZE GAS CONVECTION OVENS ELECTRICAL OPERATION F24682 Rev B October 2007 Page 55 of 68 N O T E S...

Page 56: ...FULL SIZE GAS CONVECTION OVENS ELECTRICAL OPERATION F24682 Rev B October 2007 Page 56 of 68 WIRING DIAGRAMS VC4GS VC6GS Mechanical KX Controls...

Page 57: ...FULL SIZE GAS CONVECTION OVENS ELECTRICAL OPERATION F24682 Rev B October 2007 Page 57 of 68...

Page 58: ...FULL SIZE GAS CONVECTION OVENS ELECTRICAL OPERATION F24682 Rev B October 2007 Page 58 of 68 VC4GS VC6GS Mechanical KX Controls Roast Hold Option...

Page 59: ...FULL SIZE GAS CONVECTION OVENS ELECTRICAL OPERATION F24682 Rev B October 2007 Page 59 of 68...

Page 60: ...FULL SIZE GAS CONVECTION OVENS ELECTRICAL OPERATION F24682 Rev B October 2007 Page 60 of 68 VC4GD VC6GD Solid State Temperature Control...

Page 61: ...FULL SIZE GAS CONVECTION OVENS ELECTRICAL OPERATION F24682 Rev B October 2007 Page 61 of 68...

Page 62: ...FULL SIZE GAS CONVECTION OVENS ELECTRICAL OPERATION F24682 Rev B October 2007 Page 62 of 68 VC4GD VC6GD Solid State Temperature Control Roast Hold Option...

Page 63: ...FULL SIZE GAS CONVECTION OVENS ELECTRICAL OPERATION F24682 Rev B October 2007 Page 63 of 68...

Page 64: ...FULL SIZE GAS CONVECTION OVENS ELECTRICAL OPERATION F24682 Rev B October 2007 Page 64 of 68 VC4GC VC6GC Computer Control Roast Hold Standard...

Page 65: ...FULL SIZE GAS CONVECTION OVENS ELECTRICAL OPERATION F24682 Rev B October 2007 Page 65 of 68...

Page 66: ...oes not ignite No spark No Ignition Light ON 1 Shorted electrode on ignitor flame sense 2 Ignitor cable high voltage OPEN 3 Heat relay R3 malfunction 4 Transformer T1 inoperative 5 High limit thermost...

Page 67: ...ng off gas burner 1 Probe malfunction 2 Control malfunction Oven not hot enough 1 Probe malfunction 2 Control range high rH1 setting to low See SETUP MODE under COMPUTER CONTROL VC4GD VC6GD 3 Control...

Page 68: ...ck the InP1 setup parameter Verify it matches your sensor Check sensor and connections for a reversed or open sensor If the condition causing the error is resolved the error will clear Er10 Stack over...

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