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VC3ED 208-240V SCHEMATIC

VC3ED FULL SIZE ELECTRIC CONVECTION OVEN - ELECTRICAL OPERATION

F45534 Rev. A (0415)

Page 26 of 31

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Summary of Contents for VC3ED

Page 1: ...red 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 o...

Page 2: ...HIGH LIMIT THERMOSTAT 11 INTERIOR LIGHTS 12 COOLING FAN 12 SERVICE PROCEDURES AND ADJUSTMENTS 14 SOLID STATE TEMPERATURE CONTROL TEST 14 TEMPERATURE PROBE TEST SOLID STATE CONTROL 15 SOLID STATE TEMP...

Page 3: ...ent high temperature non stick grease TOOLS Standard Standard set of hand tools VOM with ability to measure micro amp current VOM with minimum of NFPA 70E CAT III 600V UL CSA TUV listed Sensitivity of...

Page 4: ...480V 208V 240V 480V VC3ED 12 5 60 52 26 80 70 35 NOTES 1 Amperage values in the table are nominal Tolerance is 5 10 2 Complied in accordance with National Electric Code ANSI NFPA 70 latest edition SPE...

Page 5: ...lockout tagout procedures Control Panel 1 Remove three 3 screws on the right side which secure the control panel then left up and pull away Control Panel Cover 2 Disconnect temperature probe leads fro...

Page 6: ...3 Remove bottom screws on rear panel 4 Loosen top and bottom screw along right side of rear panel Fig 5 5 Slide right side rear panel up and to the right to remove 6 Reverse procedure to install Disc...

Page 7: ...er to the machine and follow lockout tagout procedures Removable Components 1 Remove the RIGHT SIDE FRONT PANEL NOTE If right side panel is not accessible this component can be serviced by removing th...

Page 8: ...rse the procedure to install the replacement probe 7 Adjust the temperature control as outlined under SOLID STATE TEMPERATURE CONTROL CALIBRATION under Service Procedures and Adjustments HEATING ELEME...

Page 9: ...ng puller remove blower from motor shaft 1 Reverse procedure to install and adjust blower position as outlined under BLOWER ADJUSTMENT under Service Procedures and Adjustments B Motor perform step 3A...

Page 10: ...motor mounting plate as outlined under BLOWER ADJUSTMENT under Service Procedures and Adjustments 13 Position motor mounting plate on the rear wall and secure with screws and washers 14 Replace the ba...

Page 11: ...er operation HIGH LIMIT THERMOSTAT Disconnect the electrical power to the machine and follow lockout tagout procedures 1 Take out racks from the oven 2 Remove the high limit thermostat cover mounting...

Page 12: ...ssembly Replacement 1 Remove racks in cavity 2 Pull lamp cover off 3 Remove RIGHT SIDE REAR PANEL Insert screw driver and push lamp assembly out into cavity Fig 22 4 Disconnect wires 5 Reverse procedu...

Page 13: ...the replacement fan and check for proper operation NOTE The fan must be installed so air is pulled from outside the rear of the oven and blown into the control area The arrow on the fan body indicates...

Page 14: ...es before checking the control Use the correct terminals for the corresponding voltage 5 Turn the power switch to ON Fig 24 6 Check for proper voltage across terminals COM AC to 120VAC or COM AC to 20...

Page 15: ...move the RIGHT SIDE FRONT PANEL NOTE If right side panel is not accessible this component can be serviced by removing CONTROL PANEL 2 Place a shielded thermocouple in the geometric center of the oven...

Page 16: ...oven temperature is not within 5 F calibration is recommended 8 Loosen the set screw on the temperature controller and carefully remove the knob from the shaft without rotating the shaft This will exp...

Page 17: ...he power switch OFF and disconnect the electrical supply to the oven 2 Remove the lead wires from the heating element and check resistance ohms See Heating Elements Values table 3 Check for proper ope...

Page 18: ...peration A Replace roller latch if malfunctioning as outlined under ROLLER LATCH ASSEMBLY INDEPENDENT DOORS and adjust as outlined in this procedure 3 Each oven door should open with a force of 8 to 2...

Page 19: ...s when the control calls for heat High Limit Thermostat Protects the oven from temperatures above 550 F by removing power from the heating circuit Auto resets at 500 F 1C Provides power to heating ele...

Page 20: ...COMPONENT LOCATION Fig 29 VC3ED FULL SIZE ELECTRIC CONVECTION OVEN ELECTRICAL OPERATION F45534 Rev A 0415 Page 20 of 31...

Page 21: ...Fig 30 VC3ED FULL SIZE ELECTRIC CONVECTION OVEN ELECTRICAL OPERATION Page 21 of 31 F45534 Rev A 0415...

Page 22: ...mit thermostat CLOSED E Oven doors closed door switch contacts CLOSED F Oven cavity temperature below 140 F 2 Power switch S1 turned ON A Power ON light Amber comes ON B Solid state temperature contro...

Page 23: ...r to desired time A Contacts 1 3 close timer motor is energized and timing down begins 3 Time expires on Cook timer A Contacts 1 3 open timer motor is de energized and timing stops B Contacts 1 4 clos...

Page 24: ...SCHEMATICS AND WIRING DIAGRAMS VC3ED 208 240V Wire Diagram VC3ED FULL SIZE ELECTRIC CONVECTION OVEN ELECTRICAL OPERATION F45534 Rev A 0415 Page 24 of 31...

Page 25: ...HZ 5 HR 60 HZ G BUZZER 230 VOLT H DOOR SWITCH 2HP J BLOCK PORCELIAN ASSEMBLY K LIMIT CONTROL 550F L ELEMENT ASSY 12 5 KW 240 VOLT 208 VOLT P PROBE THERMISTOR R FUSE HOLDER 15A S TERMINAL BLOCK 3 POLE...

Page 26: ...VC3ED 208 240V SCHEMATIC VC3ED FULL SIZE ELECTRIC CONVECTION OVEN ELECTRICAL OPERATION F45534 Rev A 0415 Page 26 of 31...

Page 27: ...D 480V WIRE DIAGRAM TABLE ITEM DESCRIPTION A SWITCH TOGGLE S P S T B FAN SWITCH TOGGLE D P D T C LIGHT 250V CLEAR C1 LIGHT 250V CLEAR VC3ED FULL SIZE ELECTRIC CONVECTION OVEN ELECTRICAL OPERATION Page...

Page 28: ...NTROL 550F L LCOE ELEMENT ASSY 12 5 KW 208 VOLT 240 VOLT P PROBE THERMISTOR R FUSE HOLDER 15A S TERMINAL BLOCK 3 POLE T CONTACTOR 40A 3 POLE V MOTOR 1 2 HP 2 SPEED G E X SWITCH TOGGLE D P D T CO Y OVE...

Page 29: ...VC3ED 480V SCHEMATIC VC3ED FULL SIZE ELECTRIC CONVECTION OVEN ELECTRICAL OPERATION Page 29 of 31 F45534 Rev A 0415...

Page 30: ...r switch malfunction 2 Fan speed switch S2 malfunction 3 Interconnecting wiring malfunction 4 Motor inoperative Blower motor doesn t run in Cool Down but runs OK in ON position 1 Power switch S1 malfu...

Page 31: ...bient temperatures Oven will not turn on 1 Line voltage incorrect 2 Control circuit fuses OPEN 3 Power switch S1 inoperative 4 Transformer inoperative 480V only No heat convection fan motor runs 1 Hig...

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