Vulcan-Hart VC5ED User manual

VC5ED FULL SIZE ELECTRIC
CONVECTION OVEN
VC5ED
- 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.
SERVICE MANUAL
A product of Vulcan-Hart 3600 North Point Blvd Baltimore, MD 21222
F45652 (0217)

TABLE OF CONTENTS
GENERAL .................................................................................................. 3
INTRODUCTION ....................................................................................... 3
OPERATION ........................................................................................... 3
CLEANING ............................................................................................. 3
LUBRICATION ......................................................................................... 3
SPECIFICATIONS ...................................................................................... 3
TOOLS ................................................................................................. 3
REMOVAL AND REPLACEMENT OF PARTS ............................................................... 5
COVERS AND PANELS ................................................................................ 5
FAN COVER ........................................................................................... 6
CONTROL PANEL COMPONENTS ..................................................................... 7
COMPONENT PANEL COMPONENTS ................................................................. 7
TEMPERATURE PROBE ............................................................................... 8
HEATING ELEMENTS .................................................................................. 8
BLOWER AND MOTOR ................................................................................ 9
DOOR SWITCH ....................................................................................... 10
ROLLER LATCH ASSEMBLY (INDEPENDENT DOORS) ............................................... 10
DOOR REMOVAL ..................................................................................... 11
HIGH LIMIT THERMOSTAT ........................................................................... 11
INTERIOR LIGHTS .................................................................................... 11
COOLING FAN ........................................................................................ 12
SERVICE PROCEDURES AND ADJUSTMENTS ........................................................... 14
TEMPERATURE CONTROL CALIBRATION ........................................................... 14
SOLID STATE TEMPERATURE CONTROL TEST ..................................................... 15
TEMPERATURE CONTROL BOARD FAULT INDICATOR .............................................. 15
TEMPERATURE PROBE TEST ....................................................................... 16
HEATING ELEMENT TEST ............................................................................ 16
BLOWER ADJUSTMENT .............................................................................. 17
DOOR STRIKE ADJUSTMENT (INDEPENDENT DOORS) ............................................. 17
ELECTRICAL OPERATION ................................................................................ 18
COMPONENT FUNCTION ............................................................................ 18
COMPONENT LOCATION ............................................................................. 19
SEQUENCE OF OPERATION ......................................................................... 24
WIRING DIAGRAMS .................................................................................. 26
TROUBLESHOOTING ..................................................................................... 30
VC5ED ................................................................................................ 30
VC5ED FULL SIZE ELECTRIC CONVECTION OVEN
© VULCAN 2017
F45652 (0217) Page 2 of 31

GENERAL
INTRODUCTION
FEATURES
MODEL CAVITY DEPTH TEMPERATURE
CONTROL DOORS (50/50) COOK TIMER
VC5ED 26.5" Solid State Independent Digital
NOTE: Stainless steel doors with window (standard).
OPERATION
Refer to Installation & Operation manual for
procedures related to Installation, Operation and
Cleaning. https://my.vulcanfeg.com/resourcecenter/
vulcanwolfberkel/default.aspx
CLEANING
Refer to Installation & Operation manual for
procedures related to Installation, Operation and
Cleaning. https://my.vulcanfeg.com/resourcecenter/
vulcanwolfberkel/default.aspx
LUBRICATION
• Cavity blower motor has sealed bearings and
requires no additional lubrication.
• HUSKEY™ TF-1000 grease or equivalent high
temperature non-stick grease.
SPECIFICATIONS
AMPERAGE - 3 PHASE/ 60HZ
MODEL
TOTAL
POWER
(KW)
PER LINE 1RECOMMENDED CIRCUIT
PROTECTION 2
208V 240V 480V 208V 240V 480V
VC5ED 12.5 35 33 15 45 40 20
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
AMPERAGE - 1 PHASE/ 60HZ
MODEL
TOTAL
POWER
(KW)
PER LINE 1RECOMMENDED CIRCUIT
PROTECTION 2
208V 240V 480V 208V 240V 480V
VC5ED 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.
SPECIFICATION SHEET TOOLS
Standard
VC5ED FULL SIZE ELECTRIC CONVECTION OVEN - GENERAL
Page 3 of 31 F45652 (0217)

1. Standard set of hand tools.
2. VOM with minimum of NFPA-70E CATIII 600V,
UL/CSA/TUV listed. Sensitivity of at least
20,000 ohms per volt. Meter leads must also be
rated at CAT III 600V.
3. Clamp on type amp meter with minimum of
NFPA-70E CAT III 600V,UL/CSA/TUV listed.
4. Temperature tester (thermocouple type).
5. ESD (Electrostatic discharge) Protection Kit.
Special
1. Gear Puller to remove blower.
2. RTV sealant, 736 DOW silicone high temp (P/N
542133) or equivalent.
VC5ED FULL SIZE ELECTRIC CONVECTION OVEN - GENERAL
F45652 (0217) Page 4 of 31

REMOVAL AND REPLACEMENT OF PARTS
COVERS AND PANELS
Disconnect the
electrical power to the machine and
follow lockout / tagout procedures.
Bottom Front Cover
1. Remove four screws, two from each side of
bottom cover, then remove cover from oven.
Fig. 1
2. Reverse procedure to install. Verify bottom cover
is seated under front plate.
Fig. 2
Right Side - Front Panel
Disconnect the
electrical power to the machine and
follow lockout / tagout procedures.
1. Loosen two screws near front of oven, which
secure bottom front cover.
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. 3
4. Slide right side front panel out.
5. Reverse procedure to install.
Right Side - Rear Panel
Disconnect the
electrical power to the machine and
follow lockout / tagout procedures.
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.
VC5ED FULL SIZE ELECTRIC CONVECTION OVEN - REMOVAL AND REPLACEMENT OF PARTS
Page 5 of 31 F45652 (0217)

Fig. 4
5. Slide right side rear panel up and to the right to
remove.
6. Reverse procedure to install.
Left Side Panel
1. Remove screws along right side, middle left side,
and bottom.
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.
Fig. 5
4. Lift up and pull away to remove.
5. Reverse procedure to install.
Control Panel
Disconnect the
electrical power to the machine and
follow lockout / tagout procedures.
1. Remove three screws on right side which secure
control panel, then lift up and pull away.
Fig. 6
2. Disconnect temperature probe leads from solid-
state temperature control.
3. Unplug wire harnesses connector to control
panel components.
4. Unplug Ground wire from control panel.
5. Reverse procedure to install.
FAN COVER
Disconnect the
electrical power to the machine and
follow lockout / tagout procedures.
1. Remove racks.
VC5ED FULL SIZE ELECTRIC CONVECTION OVEN - REMOVAL AND REPLACEMENT OF PARTS
F45652 (0217) Page 6 of 31

2. Lift fan cover up and out of oven.
Fig. 7
3. Reverse procedure to install.
CONTROL PANEL COMPONENTS
Disconnect the
electrical power to the machine and
follow lockout / tagout procedures.
1. Remove CONTROL PANEL.
2. Remove component being replaced.
3. Reverse procedure to install replacement
component.
4. Check oven for proper operation.
Fig. 8
NOTE: Panel with standard controls shown.
COMPONENT PANEL
COMPONENTS
Disconnect the
electrical power to the machine and
follow lockout / tagout procedures.
1. Remove RIGHT SIDE PANEL.
NOTE: If right side panel is not accessible, this
component can be service by removing CONTROL
PANEL.
2. Disconnect wire leads to component being
replaced.
3. Remove component.
4. Reverse procedure to install component.
5. Check oven for proper operation.
VC5ED FULL SIZE ELECTRIC CONVECTION OVEN - REMOVAL AND REPLACEMENT OF PARTS
Page 7 of 31 F45652 (0217)

TEMPERATURE PROBE
Disconnect the
electrical power to the machine and
follow lockout / tagout procedures.
1. Remove RIGHT SIDE PANEL.
NOTE: If right side - front panel is not accessible, this
component can be serviced by removing CONTROL
PANEL.
2. Disconnect the probe leads (1, Fig. 9) from the
solid state temperature control.
Fig. 9
3. Remove the racks from inside cavity.
4. Remove the probe guard.
Fig. 10
5. Remove probe by pushing it through the oven
wall opening (2, Fig. 9) in control panel area.
6. Reverse the procedure to install the replacement
probe.
7. Adjust the temperature control. Refer to: SOLID
STATE TEMPERATURE CONTROL TEST .
HEATING ELEMENTS
Disconnect the
electrical power to the machine and
follow lockout / tagout procedures.
1. Remove RIGHT SIDE - REAR PANEL.
2. Disconnect element wire connectors.
Fig. 11
3. Remove racks from cavity.
4. Remove FAN COVER.
Loosen element screws on side wall.
5. Remove screws on back wall holding brackets.
VC5ED FULL SIZE ELECTRIC CONVECTION OVEN - REMOVAL AND REPLACEMENT OF PARTS
F45652 (0217) Page 8 of 31

6. Pull elements forward, then away from right wall.
Fig. 12
7. Reverse the procedure to install the replacement
heating element.
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
perform BLOWER ADJUSTMENT.
B. Motor - perform step 3A and continue
procedure.
4. Remove bolts that secure the motor mounting
plate to the rear wall.
Fig. 13
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.
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. 14
10. Reconnect lead wires at the motor, replace
conduit and junction box cover.
VC5ED FULL SIZE ELECTRIC CONVECTION OVEN - REMOVAL AND REPLACEMENT OF PARTS
Page 9 of 31 F45652 (0217)

NOTE: Check data plate on motor for wiring
schematic. The motor must rotate clockwise when
viewed from the shaft end.
Fig. 15
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, Refer to: BLOWER
ADJUSTMENT.
13. Position motor mounting plate on the rear wall
and secure with screws and washers.
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 BOTTOM FRONT COVER.
2. Unscrew nut (Fig. 16) holding door switch.
3. Pull door switch and washer out through bottom
panel opening.
Fig. 16
4. Disconnect lead wires to door switch.
5. Reverse procedure to install replacement switch.
ROLLER LATCH ASSEMBLY
(INDEPENDENT DOORS)
Disconnect the
electrical power to the machine and
follow lockout / tagout procedures.
1. Remove the screws that attach roller latch
assembly to door.
VC5ED FULL SIZE ELECTRIC CONVECTION OVEN - REMOVAL AND REPLACEMENT OF PARTS
F45652 (0217) Page 10 of 31

Fig. 17
2. Reverse procedure to install.
DOOR REMOVAL
1. Open door to a 90° angle.
2. Lift door up off hinges to remove.
Fig. 18
3. Reverse the procedure to install the replacement
door and check oven for proper 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
plate from inside the oven cavity at the top.
Fig. 19
3. Disconnect lead wires from high limit thermostat.
NOTE: Remove the old RTV sealer from the cover
and mating surfaces inside the oven cavity and apply
new high temperature RTV sealer before installing.
4. Reverse procedure to install.
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. Ensure lamp is free from oil and dirt
before replacing.
Bulb Replacement
1. Pull lamp cover off.
2. Grasp lamp using a clean cloth and remove from
lamp assembly.
VC5ED FULL SIZE ELECTRIC CONVECTION OVEN - REMOVAL AND REPLACEMENT OF PARTS
Page 11 of 31 F45652 (0217)

Fig. 20
3. Reverse procedure to install new bulb.
Lamp Assembly 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. 21
4. Disconnect wires.
5. Reverse procedure to install new lamp assembly.
COOLING FAN
Disconnect the
electrical power to the machine and
follow lockout / tagout procedures.
1. Remove RIGHT SIDE FRONT PANEL.
NOTE: If right side - front panel is not accessible, this
component can be serviced by removing the
CONTROL PANEL.
2. Remove wire nuts from fan wire connections.
VC5ED FULL SIZE ELECTRIC CONVECTION OVEN - REMOVAL AND REPLACEMENT OF PARTS
F45652 (0217) Page 12 of 31

Fig. 22
3. 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
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 "air flow"
direction and should be pointing toward the controls.
VC5ED FULL SIZE ELECTRIC CONVECTION OVEN - REMOVAL AND REPLACEMENT OF PARTS
Page 13 of 31 F45652 (0217)

SERVICE PROCEDURES AND ADJUSTMENTS
TEMPERATURE CONTROL
CALIBRATION
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.
NOTE: The temperature control module has a
programmable offset that can be applied to the set
temperature. This can be adjusted in 5 degree
increments up to 20 degrees in either direction.
1. Place a thermocouple in geometric center of
oven cavity.
2. Remove RIGHT SIDE FRONT PANEL to view
back of temperature control board.
3. Turn oven on and set to 350° Fahrenheit.
4. Watch the red fault indicator. If light comes on
see TEMPERATURE CONTROL BOARD
FAULT INDICATOR for troubleshooting tips. If
light stays off go to next step.
5. Allow oven to stabilize (typically 3 cycles)
6. Record temperature when heat light goes off and
comes on for at least 2 cycles.
7. Calculate differential by subtracting temperature
when lamp goes out from temperature when
lamp comes on.
Differential = (Heat Lamp OFF - Heat Lamp ON)
• If differential is less than 20 degrees,
temperature control circuit is functioning
properly. If it is more than 20 degrees, turn off
oven and replace TEMPERATURE PROBE.
• Repeat CALIBRATION steps. Calculate average
temperature (Heat Lamp OFF temperature +
Heat Lamp ON temperature divided by 2).
Average = (Heat Lamp OFF + Heat lamp on divided
by 2)
• If Average is less than 10° Fahrenheit from dial
setting, thermostat is properly calibrated.
• If it is more than 10° Fahrenheit, then complete
following steps.
1. Remove temperature control knob.
Fig. 23
2. Press and hold both + (plus) and the –
(minus) buttons for 3 seconds.
NOTE: Power light will start blinking and display will
show current offset.
3. Push “+” or “-“ button to increase or
decrease offset.
NOTE: Each press will change offset by 5 degrees.
NOTE: After 5 seconds of no activity controller will
automatically exit calibration mode.
VC5ED FULL SIZE ELECTRIC CONVECTION OVEN - SERVICE PROCEDURES AND ADJUSTMENTS
F45652 (0217) Page 14 of 31

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. If test points are not easily
accessible, disconnect power and
follow Lockout/Tagout procedures,
attach test equipment and reapply
power to test.
1. Remove RIGHT SIDE FRONT PANEL.
NOTE: If right side panel is not accessible, this
component can be serviced by removing CONTROL
PANEL.
2. Place a thermocouple in the geometric center of
oven cavity.
NOTE: Oven temperature must be below 450°F.
3. Set the temperature control to the maximum
setting.
4. The green indicator light will flash once every 3
seconds if the board is receiving power. If it is off
the problem is not with the Temperature Control
Board. Refer to" TROUBLESHOOTING.
5. If the red fault indicator comes on count the
number of times it flashes and check
TEMPERATURE CONTROL BOARD FAULT
INDICATOR table to identify fault code.
TEMPERATURE CONTROL BOARD FAULT INDICATOR
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.
Code Description Action
1 Open Probe Verify probe is plugged in. Replace
TEMPERATURE PROBE.
2 Shorted Probe Replace TEMPERATURE PROBE.
3 No Heat Run TEMPERATURE PROBE
TEST.
4 PCB Overheat Verify cooling fan works. Clean air
intake at back of oven.
5 No Output
Replace temperature control PCB.
Refer to: CONTROL PANEL
COMPONENTS
6 Output Shorted
Replace temperature control PCB.
Refer to: CONTROL PANEL
COMPONENTS
VC5ED FULL SIZE ELECTRIC CONVECTION OVEN - SERVICE PROCEDURES AND ADJUSTMENTS
Page 15 of 31 F45652 (0217)

TEMPERATURE PROBE 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. If test points are not easily
accessible, disconnect power and
follow Lockout/Tagout procedures,
attach test equipment and reapply
power to test.
Temperature to Resistance Chart
Degrees
(Fahrenheit) Resistance
77° 90k - 100k
200° 8354
250° 3794
300° 1903
250° 1032
400° 609
450° 374
500° 241
1. Place a shielded thermocouple in center of oven
cavity.
2. Turn oven on and set to 350° Fahrenheit.
3. Remove temperature control knob.
4. Hold down "-" (minus) button for 3 seconds to
enter diagnostic mode.
NOTE: Display should now show oven temperature
reported by probe.
5. Allow temperature to stabilize (typically 3 cycles).
• If thermocouple temperature is within 5°
Fahrenheit of display temperature, probe is
functioning properly.
• If temperature difference between
thermocouple and display is greater than 5
degrees but less than 20° Fahrenheit, refer
to: TEMPERATURE CONTROL
CALIBRATION to calibrate.
• If temperature difference is greater than 20°
Fahrenheit turn off oven, replace
TEMPERATURE PROBE, then repeat
TEMPERATURE PROBE TEST.
HEATING ELEMENT 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. If test points are not easily
accessible, disconnect power and
follow Lockout/Tagout procedures,
attach test equipment and reapply
power to test.
1. Turn the power switch ON and set the oven
temperature control to the highest setting.
2. Measure the voltage at the heating element
terminals and verify it against the data plate
voltage.
A. If voltage is incorrect, find the source of the
problem.
B. If voltage is correct, check current draw
(amps) through the heating element lead
wires.
NOTE: This method is preferred over a resistance
check when a clamp on type amp meter is available.
1) If current draw is correct then heating
element is functioning properly. See
HEATING ELEMENT VALUES table.
2) If current draw is not correct, turn the
power switch OFF and disconnect the
electrical supply to the oven.
a. Replace heating element, then
proceed to step 3.
C. If unable to check current draw, a resistance
check may indicate a malfunctioning
element.
1) Turn the 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 ELEMENT
VALUES table.
3. Check for proper operation.
VC5ED FULL SIZE ELECTRIC CONVECTION OVEN - SERVICE PROCEDURES AND ADJUSTMENTS
F45652 (0217) Page 16 of 31

HEATING ELEMENT VALUES
VOLT. KW PER
ELEMENT
AMPS PER
ELEMENT OHMS PER
ELEMENT
1 PH 3 PH
208 4 19 19 10
240 4 16.5 16.5 14.5
480 4 8 8 57
NOTES:
1. Values in the table are nominal.
Tolerance is +5/-10%.
2. Voltage values are @ 60HZ.
3. Resistance values (ohms) are @
room temperature.
BLOWER ADJUSTMENT
Disconnect the
electrical power to the machine and
follow lockout / tagout procedures.
1. Loosen the motor mounting bolts.
2. 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 top,
bottom, left and right of the blower.
A. If the blower is square then tighten motor
mounting bolts and proceed to STEP 4.
B. If the blower is not square continue
adjusting until proper spacing is achieved
then tighten motor mounting bolts.
NOTE: If necessary, place shims between motor and
frame.
Fig. 24
Fig. 25
3. Reverse the procedure to install.
DOOR STRIKE ADJUSTMENT
(INDEPENDENT DOORS)
1. Open the doors and inspect door strike for proper
shape.
A. Bend strike plate.
Fig. 26
2. Open and close the doors several times while
observing the roller latch and strike plate
operation.
A. Replace ROLLER LATCH ASSEMBLY
(INDEPENDENT DOORS) if
malfunctioning.
3. Each oven door should open with a force of 8 to
25 pounds when pulled at the handle. The
adjustments must allow the doors to remain
closed during normal operation and allow
opening without exertion by the user.
VC5ED FULL SIZE ELECTRIC CONVECTION OVEN - SERVICE PROCEDURES AND ADJUSTMENTS
Page 17 of 31 F45652 (0217)

ELECTRICAL OPERATION
COMPONENT FUNCTION
Power Switch (S1) .... Determines the mode of operation; ON, OFF, or COOL down.
Oven Light Switch
(S3) ...................
Controls the oven cavity lights.
Fan Speed Switch
(S2) ...................
Controls blower motor speed between High and Low settings.
Alarm/Buzzer ......... Signals the end of a "Cook" cycle when cooking time expires.
Cook Timer ........... Counts the "Cook" time of the product and signals the buzzer at the end of the cycle.
Door Switch .......... Allows the oven to operate when the doors are closed but stops the oven from operating
when the doors are opened.
Blower Motor ......... Operates the oven cavity blower (convection fan).
Transformer .......... Provides 240VAC power to the oven control circuit and blower motor (480VAC models
only).
Solid State
Temperature
Control ...............
Monitors temperature sensor and regulates the oven cavity temperature by controlling
1CON to energize the heating elements 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.
1CON ................. Provides power to heating elements when energized. 1C is energized by the temperature
control when a call for heat is made.
Power ON Light ....... Lit whenever the power switch (S1) is turned to ON or Cool Down mode.
Heat Light ............ Lit whenever temperature control is calling for heat.
Temperature Probe ... Senses the oven temperature for the solid state temperature. The probe is an RTD
(resistance temperature detector) of the Thermistor type. As temperature increases the
resistance value decreases.
Cooling Fan .......... Circulates cooler air from outside the oven to cool components in the control area.
Fuses ................. Protect control circuit.
VC5ED FULL SIZE ELECTRIC CONVECTION OVEN - ELECTRICAL OPERATION
F45652 (0217) Page 18 of 31

COMPONENT LOCATION
Fig. 27
VC5ED FULL SIZE ELECTRIC CONVECTION OVEN - ELECTRICAL OPERATION
Page 19 of 31 F45652 (0217)

CONTROL PANEL
1 ON/ OFF / COOL Switch
2 ON / HEAT / RESET Lights
3 Temperature Dial
4 Digital Time Readout
5 Timer
6 HI / LOW Fan Setting
7 Light ON / OFF Switch
8 Temperature Control Board
9 Timer Board
10 Light and Fan Speed Switch Board
11 Gentle Bake Switch
12 Fuses
CONTROL PANEL DIGITAL TEMPERATURE READOUT
VC5ED FULL SIZE ELECTRIC CONVECTION OVEN - ELECTRICAL OPERATION
F45652 (0217) Page 20 of 31