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This Manual is prepared for the use of trained Vulcan Service
Technicians and should not be used by those not properly
qualified.
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 to perform to
determine if you have the necessary tools, instruments and skills
required to perform the procedure. Procedures for which you do
not have the necessary tools, instruments and skills should be
performed by a trained Vulcan Service Technician.
The reproduction, transfer, sale or other use of this Manual,
without the express written consent of Vulcan, is prohibited.
This manual has been provided to you by ITW Food Equipment
Group LLC ("ITW FEG") without charge and remains the property
of ITW FEG, and by accepting this manual you agree that you will
return it to ITW FEG promptly upon its request for such return at
any time in the future.
A product of Vulcan-Hart
SERVICE MANUAL
VC3ED FULL SIZE ELECTRIC
CONVECTION OVEN
VC3ED
- NOTICE -
3600 North Point Blvd Baltimore, MD 21222
ML-137013
F45534 Rev. A (0415)
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Table of Contents
Summary of Contents for Vulkan VC3ED
- Page 1 SERVICE MANUAL VC3ED FULL SIZE ELECTRIC CONVECTION OVEN VC3ED ML-137013 - NOTICE - This Manual is prepared for the use of trained Vulcan Service Technicians and should not be used by those not properly qualified. This manual is not intended to be all encompassing. If you have...
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Page 2: Table Of Contents
VC3ED FULL SIZE ELECTRIC CONVECTION OVEN TABLE OF CONTENTS GENERAL ....................3 INTRODUCTION . -
Page 3: General
VC3ED FULL SIZE ELECTRIC CONVECTION OVEN - GENERAL GENERAL INTRODUCTION FEATURES TEMPERATURE MODEL CAVITY DEPTH DOORS (50/50) COOK TIMER CONTROL VC3ED 26.5" Solid State Independent 1-Hour Dial NOTE: Stainless steel doors with window (standard) • HUSKEY™ TF-1000 grease or equivalent high INSTALLATION temperature non-stick grease. - Page 4 VC3ED FULL SIZE ELECTRIC CONVECTION OVEN - GENERAL AMPERAGE - 1 PHASE/ 60HZ RECOMMENDED CIRCUIT TOTAL PER LINE PROTECTION MODEL POWER (KW) 208V 240V 480V 208V 240V 480V VC3ED 12.5 Amperage values in the table are nominal. Tolerance is +5/-10%.
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Page 5: Removal And Replacement Parts
VC3ED FULL SIZE ELECTRIC CONVECTION OVEN - REMOVAL AND REPLACEMENT PARTS REMOVAL AND REPLACEMENT PARTS COVERS AND PANELS Disconnect the electrical power to the machine and follow lockout / tagout procedures. Bottom Front Cover The bottom front cover is secured with four (4) screws, two on each side of cover. - Page 6 VC3ED FULL SIZE ELECTRIC CONVECTION OVEN - REMOVAL AND REPLACEMENT PARTS Loosen screws on left side of front panel and top cover screw. Remove screws along right side and bottom of front panel. Fig. 5 Slide right side rear panel up and to the right to remove.
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Page 7: Control Panel Components
VC3ED FULL SIZE ELECTRIC CONVECTION OVEN - REMOVAL AND REPLACEMENT PARTS CONTROL PANEL COMPONENTS Disconnect the electrical power to the machine and follow lockout / tagout procedures. Removable Components Remove the CONTROL PANEL. Remove the component being replaced. Reverse the procedure to install the replacement component, then check oven for proper operation. -
Page 8: Heating Elements
VC3ED FULL SIZE ELECTRIC CONVECTION OVEN - REMOVAL AND REPLACEMENT PARTS Fig. 10 Remove probe by pushing it through the oven wall and down through upper panel into the control panel area. Fig. 8 Remove upper panel and pull out insulation cut- away. -
Page 9: Blower And Motor
VC3ED FULL SIZE ELECTRIC CONVECTION OVEN - REMOVAL AND REPLACEMENT PARTS BLOWER AND MOTOR Disconnect the electrical power to the machine and follow lockout / tagout procedures. Take out the racks and rack supports. Lift off FAN COVER. If replacing:... -
Page 10: Door Switch
VC3ED FULL SIZE ELECTRIC CONVECTION OVEN - REMOVAL AND REPLACEMENT PARTS Remove motor mounting bolts and flat washers 14. Replace the baffle panel. then lift the motor from the mounting plate. 15. Remove cardboard from the bottom of the oven Position the replacement motor on the motor cavity. -
Page 11: Roller Latch Assembly (Independent Doors)
VC3ED FULL SIZE ELECTRIC CONVECTION OVEN - REMOVAL AND REPLACEMENT PARTS Reverse the procedure to install the replacement ROLLER LATCH ASSEMBLY door and check oven for proper operation. (INDEPENDENT DOORS) HIGH LIMIT THERMOSTAT Disconnect the Disconnect the electrical power to the machine and follow lockout / tagout procedures. -
Page 12: Interior Lights
VC3ED FULL SIZE ELECTRIC CONVECTION OVEN - REMOVAL AND REPLACEMENT PARTS INTERIOR LIGHTS Disconnect the electrical power to the machine and follow lockout / tagout procedures. Do not touch the Halogen lamp with bare hands. If lamp is exposed to oil from the skin, the life will be reduced. - Page 13 VC3ED FULL SIZE ELECTRIC CONVECTION OVEN - REMOVAL AND REPLACEMENT PARTS Fig. 23 Loosen the tab screw holding the fan to the component panel. Rotate the tab so that the fan will clear and remove the fan. Reverse the procedure to install the replacement fan and check for proper operation.
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Page 14: Service Procedures And Adjustments
VC3ED FULL SIZE ELECTRIC CONVECTION OVEN - SERVICE PROCEDURES AND ADJUSTMENTS SERVICE PROCEDURES AND ADJUSTMENTS SOLID STATE TEMPERATURE CONTROL TEST Certain procedures in this section require electrical test or measurements while power is applied to the machine. Exercise extreme caution at all times and follow Arc Flash procedures. -
Page 15: Temperature Probe Test (Solid State Control)
VC3ED FULL SIZE ELECTRIC CONVECTION OVEN - SERVICE PROCEDURES AND ADJUSTMENTS If output voltage from the internal relay NOTE: If right side panel is not accessible, this is correct proceed to step 8. If output component can be serviced by removing CONTROL voltage from the internal relay is not PANEL. - Page 16 VC3ED FULL SIZE ELECTRIC CONVECTION OVEN - SERVICE PROCEDURES AND ADJUSTMENTS If the control differential is less than 20°F, the temperature control circuit is functioning properly. Proceed to step 7. If the control differential is more than 20°F, check the temperature probe as outlined under Temperature Probe Test.
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Page 17: Heating Element Test
VC3ED FULL SIZE ELECTRIC CONVECTION OVEN - SERVICE PROCEDURES AND ADJUSTMENTS HEATING ELEMENT VALUES HEATING ELEMENT TEST AMPS PER KW PER OHMS PER ELEMENT VOLT. ELEMENT ELEMENT Certain procedures in 1 PH 3 PH this section require electrical test or measurements while power is applied 16.5... -
Page 18: Door Strike Adjustment Independent Doors)
VC3ED FULL SIZE ELECTRIC CONVECTION OVEN - SERVICE PROCEDURES AND ADJUSTMENTS Fig. 26 Fig. 28 Open and close the doors several times while observing the roller latch and strike plate operation. Replace roller latch if malfunctioning as outlined under ROLLER LATCH ASSEMBLY (INDEPENDENT DOORS) and adjust as outlined in this procedure. -
Page 19: Electrical Operation
VC3ED FULL SIZE ELECTRIC CONVECTION OVEN - ELECTRICAL OPERATION ELECTRICAL OPERATION COMPONENT FUNCTION Power Switch (S1) ..Determines the mode of operation; ON, OFF, or COOL down. Oven Light Switch Controls the oven cavity lights. (S3) .... -
Page 20: Component Location
VC3ED FULL SIZE ELECTRIC CONVECTION OVEN - ELECTRICAL OPERATION COMPONENT LOCATION Fig. 29 F45534 Rev. A (0415) Page 20 of 31... - Page 21 VC3ED FULL SIZE ELECTRIC CONVECTION OVEN - ELECTRICAL OPERATION Fig. 30 Page 21 of 31 F45534 Rev. A (0415)
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Page 22: Sequence Of Operation
VC3ED FULL SIZE ELECTRIC CONVECTION OVEN - ELECTRICAL OPERATION Fig. 31 Oven doors closed (door switch contacts SEQUENCE OF OPERATION CLOSED). Oven cavity temperature below 140°F. Cook Cycle Power switch (S1) turned ON. Conditions. Power ON light (Amber) comes ON. - Page 23 VC3ED FULL SIZE ELECTRIC CONVECTION OVEN - ELECTRICAL OPERATION Blower motor energized. Contacts 1 & 4 close. NOTE: Motor speed (Hi/Low) depends on position of Buzzer energized and sounds. fan speed switch (S2). NOTE: The buzzer continues to sound until the timer Component cooling fan energized.
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Page 24: Schematics And Wiring Diagrams
VC3ED FULL SIZE ELECTRIC CONVECTION OVEN - ELECTRICAL OPERATION SCHEMATICS AND WIRING DIAGRAMS VC3ED 208-240V Wire Diagram F45534 Rev. A (0415) Page 24 of 31... - Page 25 VC3ED FULL SIZE ELECTRIC CONVECTION OVEN - ELECTRICAL OPERATION VC3ED 208-240V WIRE DIAGRAM TABLE ITEM DESCRIPTION SWITCH, TOGGLE S.P.S.T FAN SWITCH, TOGGLE D.P.D.T LIGHT, 250V, CLEAR LIGHT, 250V, CLEAR WIRE SET, LIMIT SWITCH TEMP. CONTROL - NCC TIMER, 230 VOLT (1-HR, 60 HZ.) (5-HR, 60 HZ.)
- Page 26 VC3ED FULL SIZE ELECTRIC CONVECTION OVEN - ELECTRICAL OPERATION VC3ED 208-240V SCHEMATIC F45534 Rev. A (0415) Page 26 of 31...
- Page 27 VC3ED FULL SIZE ELECTRIC CONVECTION OVEN - ELECTRICAL OPERATION VC3ED 480V Wire Diagram VC3ED 480V WIRE DIAGRAM TABLE ITEM DESCRIPTION SWITCH, TOGGLE S.P.S.T FAN SWITCH, TOGGLE D.P.D.T LIGHT, 250V, CLEAR LIGHT, 250V, CLEAR Page 27 of 31 F45534 Rev. A (0415)
- Page 28 VC3ED FULL SIZE ELECTRIC CONVECTION OVEN - ELECTRICAL OPERATION VC3ED 480V WIRE DIAGRAM TABLE ITEM DESCRIPTION TEMP. CONTROL - NCC TIMER, 230 VOLT (1-HR, 60 HZ.) (5-HR, 60 HZ.) BUZZER 230 VOLT DOOR SWITCH, 2HP BLOCK,PORCELIAN ASSEMBLY LIMIT CONTROL 550F LCOE ELEMENT ASSY, 12.5 KW (208 VOLT) (240 VOLT)
- Page 29 VC3ED FULL SIZE ELECTRIC CONVECTION OVEN - ELECTRICAL OPERATION VC3ED 480V SCHEMATIC Page 29 of 31 F45534 Rev. A (0415)
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Page 30: Troubleshooting
VC3ED FULL SIZE ELECTRIC CONVECTION OVEN - TROUBLESHOOTING TROUBLESHOOTING Certain procedures in this section require electrical test or measurements while power is applied to the machine. Exercise extreme caution at all times and follow Arc Flash procedures. If test points are not easily accessible, disconnect power and follow Lockout/Tagout procedures, attach test equipment and reapply power to test. - Page 31 VC3ED FULL SIZE ELECTRIC CONVECTION OVEN - TROUBLESHOOTING SYMPTOMS POSSIBLE CAUSES Convection fan motor speed/direction. Air flow baffle missing or damaged. Line voltage incorrect. High limit thermostat malfunction. Contactor malfunction. Uneven Cooking. Heating element(s) malfunction. Doors out of adjustment. Door roller out of adjustment or broken.
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