Vulcan-Hart VC3ED User Manual

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 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 3600 North Point Blvd Baltimore, MD 21222

F45534 (0415)

VC3ED FULL SIZE ELECTRIC CONVECTION OVEN

TABLE OF CONTENTS

GENERAL .................................................................................................. 3

INTRODUCTION ....................................................................................... 3

INSTALLATION ........................................................................................ 3

OPERATION ........................................................................................... 3

CLEANING ............................................................................................. 3

LUBRICATION ......................................................................................... 3

TOOLS ................................................................................................. 3

SPECIFICATIONS ...................................................................................... 3

REMOVAL AND REPLACEMENT PARTS ................................................................... 5

COVERS AND PANELS ................................................................................ 5

CONTROL PANEL COMPONENTS ..................................................................... 7

COMPONENT PANEL COMPONENTS ................................................................. 7

TEMPERATURE PROBE ............................................................................... 7

HEATING ELEMENTS .................................................................................. 8

BLOWER AND MOTOR ................................................................................ 9

DOOR SWITCH ....................................................................................... 10

ROLLER LATCH ASSEMBLY (INDEPENDENT DOORS) ............................................... 11

DOOR REMOVAL ..................................................................................... 11

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 TEMPERATURE CONTROL CALIBRATION ............................................ 15

HEATING ELEMENT TEST ............................................................................ 17

BLOWER ADJUSTMENT .............................................................................. 17

DOOR STRIKE ADJUSTMENT INDEPENDENT DOORS) .............................................. 18

ELECTRICAL OPERATION ................................................................................ 19

COMPONENT FUNCTION ............................................................................ 19

COMPONENT LOCATION ............................................................................. 20

SEQUENCE OF OPERATION ......................................................................... 22

SCHEMATICS AND WIRING DIAGRAMS .............................................................. 24

TROUBLESHOOTING ..................................................................................... 30

VC3ED ................................................................................................ 30

F45534 (0415) Page 2 of 31

VC3ED FULL SIZE ELECTRIC CONVECTION OVEN - GENERAL

GENERAL

INTRODUCTION

FEATURES

MODEL CAVITY DEPTH

VC3ED 26.5" Solid State Independent 1-Hour Dial

NOTE: Stainless steel doors with window (standard)

INSTALLATION

TEMPERATURE CONTROL

• HUSKEY™ TF-1000 grease or equivalent high

DOORS (50/50) COOK TIMER

temperature non-stick grease.

Refer to OPERATORS MANUAL for procedures related to Installation, Operation and Cleaning.

OPERATION

Refer to OPERATORS MANUAL for procedures related to Installation, Operation and Cleaning.

CLEANING

Refer to OPERATORS MANUAL for procedures related to Installation, Operation and Cleaning.

LUBRICATION

• Cavity blower motor has sealed bearings and requires no additional lubrication.

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 at least 20,000 ohms per volt. Meter leads must also be rated at CAT III 600V.

• Gear Puller to remove blower

• Temperature tester (thermocouple type)

• Manometer

• RTV sealant, 736 DOW silicone high temp (P/N

542133) or equivalent

TOOLS

SPECIFICATIONS

AMPERAGE - 3 PHASE/ 60HZ

TOTAL

MODEL

VC3ED 12.5 35 33 15 45 40 20

NOTES:

POWER

(KW)

Amperage values in the table are nominal. Tolerance is +5/-10%.

Complied in accordance with National Electric Code, ANSI/NFPA 70, latest edition

208V 240V 480V 208V 240V 480V

PER LINE

RECOMMENDED CIRCUIT

PROTECTION

Page 3 of 31 F45534 (0415)

VC3ED FULL SIZE ELECTRIC CONVECTION OVEN - GENERAL

AMPERAGE - 1 PHASE/ 60HZ

RECOMMENDED CIRCUIT

PROTECTION

MODEL

TOTAL

POWER

(KW)

PER LINE

208V 240V 480V 208V 240V 480V

VC3ED 12.5 60 52 26 80 70 35

NOTES:

Amperage values in the table are nominal. Tolerance is +5/-10%.

Complied in accordance with National Electric Code, ANSI/NFPA 70, latest edition.

SPECIFICATION SHEET

F45534 (0415) Page 4 of 31

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

1. The bottom front cover is secured with four (4) screws, two on each side of cover. Remove these screws then remove cover from oven.

Fig. 1

2. Reverse procedure to install. Verify bottom cover is seated under front plate.

Fig. 2

Disconnect the

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

Control Panel

Control Panel Cover

2. Disconnect temperature probe leads from solid state temperature control.

3. Disconnect fuse wires.

4. Unplug wire harness connector to control panel components.

5. Reverse procedure to install.

Disconnect the

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

1. Remove three (3) screws on the right side which secure the control panel then left up and pull away.

Page 5 of 31 F45534 (0415)

Right Side - Front Panel

1. Loosen two screws near front of oven, which secure bottom front cover.

VC3ED FULL SIZE ELECTRIC CONVECTION OVEN - REMOVAL AND REPLACEMENT PARTS

2. Loosen screws on left side of front panel and top cover screw.

3. Remove screws along right side and bottom of front panel.

Fig. 4

4. Slide right side front panel out.

5. Reverse procedure to install.

Disconnect the

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

Right Side - Rear Panel

1. Remove two middle screws along right side of rear panel.

2. Remove screws along left side of rear panel.

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.

Disconnect the

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

Left Side Panel

1. Remove screws along right side, middle left side, and bottom on left side panel.

2. Loosen screws on top and bottom on left side of panel.

3. Loosen two screws near front of oven, which secure bottom front cover.

F45534 (0415) Page 6 of 31

VC3ED FULL SIZE ELECTRIC CONVECTION OVEN - REMOVAL AND REPLACEMENT PARTS

Fig. 6

4. Lift up and pull away to remove.

5. Reverse procedure to install.

CONTROL PANEL COMPONENTS

Disconnect the

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

Removable Components

1. Remove the CONTROL PANEL.

2. Remove the component being replaced.

3. Reverse the procedure to install the replacement component, then check oven for proper operation.

COMPONENT PANEL

COMPONENTS

Disconnect the

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

Fan Cover

1. Remove racks.

2. Lift fan cover up and out of oven.

Fan Cover Removal

3. Reverse procedure to install.

Disconnect the

electrical power 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 the CONTROL PANEL.

2. Disconnect the wire leads to the component being replaced.

3. Remove the component.

4. Reverse the procedure to install the replacement component and check oven for proper operation.

TEMPERATURE PROBE

Disconnect the

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

1. Remove the RIGHT SIDE - FRONT PANEL.

NOTE: If right side - front panel is not accessible, this component can be serviced by removing the CONTROL PANEL.

Disconnect the probe leads from the solid state temperature control.

Page 7 of 31 F45534 (0415)

VC3ED FULL SIZE ELECTRIC CONVECTION OVEN - REMOVAL AND REPLACEMENT PARTS

Fig. 8

2. Remove upper panel and pull out insulation cutaway.

Fig. 10

5. Remove probe by pushing it through the oven wall and down through upper panel into the control panel area.

6. Reverse the procedure to install the replacement

7. Adjust the temperature control as outlined under

Fig. 9

3. Remove the racks from inside cavity.

4. Remove the probe guard.

1. Remove RIGHT SIDE - REAR PANEL.

2. Disconnect element wire connectors.

F45534 (0415) Page 8 of 31

Fig. 11

probe.

SOLID STATE TEMPERATURE CONTROL CALIBRATION under Service Procedures and Adjustments.

HEATING ELEMENTS

Disconnect the

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

VC3ED FULL SIZE ELECTRIC CONVECTION OVEN - REMOVAL AND REPLACEMENT PARTS

Fig. 12

3. Remove racks from cavity.

4. Remove FAN COVER.

Loosen element screws on side wall.

5. Remove screws on back wall holding brackets.

BLOWER AND MOTOR

Disconnect the

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

1. Take out the racks and rack supports.

2. Lift off FAN COVER.

3. If replacing:

A. Blower Only - Loosen bolts on blower hub

and using a bearing 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 and continue

procedure.

4. Remove bolts that secure the motor mounting plate to the rear wall.

6. Pull elements forward, then away from right wall.

Heating Element

7. Reverse the procedure to install the replacement heating element.

Fig. 14

5. Place a piece of cardboard on the bottom of the oven cavity to protect its surface from any damage during motor assembly removal.

6. Pull the motor assembly into the oven cavity and place it on the cardboard.

7. Remove the junction box cover from the motor, disconnect lead wires and remove the conduit.

Page 9 of 31 F45534 (0415)

VC3ED FULL SIZE ELECTRIC CONVECTION OVEN - REMOVAL AND REPLACEMENT PARTS

8. Remove motor mounting bolts and flat washers then lift the motor from the mounting plate.

9. Position the replacement motor on the motor mounting plate and install mounting bolts and washers. Hand tighten mounting bolts only.

Fig. 15

10. 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.

14. Replace the baffle panel.

15. Remove cardboard from the bottom of the oven cavity.

16. Check oven for proper operation then replace rack guides and racks.

DOOR SWITCH

Disconnect the

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

1. Remove the BOTTOM FRONT COVER.

2. Unscrew nut holding door switch.

3. Pull door switch and washer out through bottom panel opening.

Fig. 16

11. Slide blower onto motor shaft until hub is flush with end of shaft then tighten bolts.

12. Adjust motor position until blower is parallel to 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.

F45534 (0415) Page 10 of 31

4. Disconnect the lead wires to the door switch.

5. Reverse procedure to install the replacement

Fig. 17

switch.

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