Vulcan VC5GD Service Manual
SERVICE MANUAL
FULL SIZE GAS CONVECTION
OVEN
VC5GD
- 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
F45598 (0616)
FULL SIZE GAS CONVECTION OVEN
TABLE OF CONTENTS
GENERAL .................................................................................................. 3
INTRODUCTION ....................................................................................... 3
OPERATION ........................................................................................... 3
INSTALLATION ........................................................................................ 3
LUBRICATION ......................................................................................... 3
CLEANING ............................................................................................. 3
SPECIFICATIONS ...................................................................................... 3
TOOLS ................................................................................................. 4
REMOVAL AND REPLACEMENT OF PARTS ............................................................... 5
COVERS AND PANELS ................................................................................ 5
CONTROL PANEL COMPONENTS ..................................................................... 6
COMPONENT PANEL COMPONENTS ................................................................. 7
TEMPERATURE PROBE ............................................................................... 7
GAS BURNER ......................................................................................... 8
GAS ORIFICE .......................................................................................... 9
GAS SOLENOID VALVE ................................................................................ 9
IGNITION CONTROL MODULE ....................................................................... 10
SPARK IGNITER AND FLAME SENSE ................................................................ 10
BLOWER ............................................................................................. 11
MOTOR ............................................................................................... 12
DOOR SWITCH ....................................................................................... 13
ROLLER LATCH ASSEMBLY (INDEPENDENT DOORS) ............................................... 14
DOOR REMOVAL ..................................................................................... 14
HIGH LIMIT THERMOSTAT ........................................................................... 14
INTERIOR LIGHTS .................................................................................... 15
COOLING FAN ........................................................................................ 15
SERVICE PROCEDURES AND ADJUSTMENTS ........................................................... 17
TEMPERATURE CONTROL CALIBRATION ........................................................... 17
SOLID STATE TEMPERATURE CONTROL TEST ..................................................... 18
TEMPERATURE CONTROL BOARD FAULT INDICATOR .............................................. 18
TEMPERATURE PROBE TEST ....................................................................... 19
GAS VALVE PRESSURE CHECK ..................................................................... 19
VERIFICATION OF SPARK AT IGNITOR .............................................................. 20
BLOWER ADJUSTMENT .............................................................................. 20
DOOR STRIKE ADJUSTMENT INDEPENDENT DOORS) .............................................. 21
ELECTRICAL OPERATION ................................................................................ 22
COMPONENT FUNCTION ............................................................................ 22
COMPONENT LOCATION ............................................................................. 23
SEQUENCE OF OPERATION ......................................................................... 28
DIAGRAMS ............................................................................................... 31
WIRING DIAGRAM AND SCHEMATIC ................................................................. 31
TROUBLESHOOTING ..................................................................................... 34
ALL MODELS ......................................................................................... 34
© VULCAN 2016
F45598 (0616) Page 2 of 35
FULL SIZE GAS CONVECTION OVEN - GENERAL
GENERAL
INTRODUCTION
Models
MODEL
VC5GD 26.5" Solid State
1
Simultaneous doors are optional (with or w/o window).
2
Stainless steel doors with window (standard).
CAVITY DEPTH
TEMPERATURE
FEATURES
CONTROL
DOORS
(50/50)
Independent 1
2
OPERATION
Refer to Operator's manual for operation instructions
(F31123), located on Vulcan Resource Center.
https://my.vulcanfeg.com/resourcecenter/
vulcanwolfberkel/default.aspx
INSTALLATION
Detailed installation instructions (F31123) are located
on the Vulcan resource center.
https://my.vulcanfeg.com/resourcecenter/
vulcanwolfberkel/default.aspx
SPECIFICATIONS
Voltage Amps
120/60/1 8.0
Input BTU Rating
Fuel BTU
Natural Gas 50,000 input at 5 in. W.C.
Propane 50,000 input at 10.0 in. W.C.
LUBRICATION
Refer to Lubrications Manual F20067 for current
values.
CLEANING
Refer to Operator's manual for cleaning instructions,
located on Vulcan Resource Center.
https://my.vulcanfeg.com/resourcecenter/
vulcanwolfberkel/default.aspx
Electrical
Gas Line Pressures
Fuel Recommended Minimum (in. W.C.) Recommended Maximum (in. W.C.)
Natural Gas 8.0, 6.0 14.0
Propane 11.0 14.0
Page 3 of 35 F45598 (0616)
FULL SIZE GAS CONVECTION OVEN - GENERAL
TOOLS
Standard
• Standard set of Hand Tools.
• VOM with minimum of NFPA-70E CATIII 600V,
UL/CSA/TUV listed. Sensitivity of at least 20,000
ohms per volt and the ability to measure DC
micro amps. Meter leads must also be rated at
CAT III 600V.
• Clamp on type amp meter with minimum of
NFPA-70E CAT III 600V,UL/CSA/TUV listed.
Special
• Temperature Tester (Thermocouple Type).
• Manometer.
F45598 (0616) Page 4 of 35
FULL SIZE GAS CONVECTION OVEN - REMOVAL AND REPLACEMENT OF PARTS
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.
3. Remove screws along right side and bottom of
front panel.
Fig. 3
4. Slide right side front panel out.
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.
5. Reverse procedure to install.
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.
Page 5 of 35 F45598 (0616)
FULL SIZE GAS CONVECTION OVEN - REMOVAL AND REPLACEMENT OF PARTS
Control Panel
1. Remove three screws on the right side which
secure the control panel then left up and pull
away.
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 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.
Fig. 6
2. Disconnect the temperature probe leads from the
solid state temperature control.
3. Unplug the wire harnesses connector to control
panel components.
4. Unplug Ground wire from control panel.
5. 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
4. Check oven for proper operation.
Fig. 5
4. Lift up and pull away to remove.
5. Reverse procedure to install.
F45598 (0616) Page 6 of 35
component.
FULL SIZE GAS CONVECTION OVEN - REMOVAL AND REPLACEMENT OF PARTS
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. 8) from the
solid state temperature control.
Fig. 7
NOTE: Panel with standard controls shown.
COMPONENT PANEL
COMPONENTS
Disconnect the
electrical power to the machine and
follow lockout / tagout procedures.
1. Remove
NOTE: If right side panel is not accessible, this
component can be service by removing the
CONTROL PANEL.
2. Disconnect the wire leads to component being
replaced.
3. Remove the component.
4. Reverse procedure to install component.
5. Check oven for proper operation.
RIGHT SIDE PANEL.
Fig. 8
3. Remove the racks from inside cavity.
4. Remove the probe guard.
Page 7 of 35 F45598 (0616)
FULL SIZE GAS CONVECTION OVEN - REMOVAL AND REPLACEMENT OF PARTS
Fig. 11
Fig. 9
5. Remove probe by pushing it through the oven
wall opening (2, Fig. 8) 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 .
GAS BURNER
Disconnect the
electrical power to the machine and
follow lockout / tagout procedures.
Shut off the gas before servicing the
unit.
1. Remove
2. Disconnect ignition cable and the flame sense
lead wire.
BOTTOM FRONT COVER.
4. Remove screws securing the burner cover and
pull straight out.
Fig. 12
5. Grasp burner and lift out.
6. Reverse procedure to install replacement burner.
NOTE: Ensure that burner positioning bracket (Ushaped end) is inserted into slot at the rear of burner
chamber.
7. Check for proper operation.
Fig. 10
3. Remove bolts securing gas manifold to oven and
place manifold to the side.
F45598 (0616) Page 8 of 35
Fig. 13
FULL SIZE GAS CONVECTION OVEN - REMOVAL AND REPLACEMENT OF PARTS
GAS ORIFICE
Disconnect the
electrical power to the machine and
follow lockout / tagout procedures.
Shut off the gas before servicing the
unit.
1. Remove
2. Remove bolts securing gas manifold to oven and
place manifold to the side.
3. Remove gas orifice from spud on manifold and
replace with correct orifice for the given altitude.
BOTTOM FRONT COVER.
Fig. 14
NOTE: if right side panel is not accessible, this
component can be serviced by just removing
CONTROL PANEL.
2. Disconnect lead wires.
3. Disconnect compression fittings to valve.
Fig. 15
4. Reverse procedure to install and check for proper
operation.
GAS SOLENOID VALVE
Disconnect the
electrical power to the machine and
follow lockout / tagout procedures.
Fig. 16
4. Loosen bolts securing valve and bracket
assembly then remove screws securing valve to
bracket.
Fig. 17
Shut off the gas before servicing the
unit.
1. Remove CONTROL PANEL and RIGHT SIDE
FRONT PANEL.
5. Reverse procedure to install replacement gas
valve.
Page 9 of 35 F45598 (0616)
FULL SIZE GAS CONVECTION OVEN - REMOVAL AND REPLACEMENT OF PARTS
NOTE: Clean pipe threads and apply pipe joint
compound to threads. Any pipe joint compound used,
must be resistant to the action of propane gases.
All gas joints disturbed during
servicing must be checked for leaks. Check with a
soap and water solution (bubbles). Do not use an open
flame.
6. Verify gas pressure as outlined under GAS
PRESSURE ADJUSTMENT.
7. Check for proper operation.
IGNITION CONTROL MODULE
Disconnect the
electrical power to the machine and
follow lockout / tagout procedures.
Shut off the gas before servicing the
unit.
1. Remove RIGHT SIDE FRONT PANEL.
SPARK IGNITER AND FLAME
SENSE
Disconnect the
electrical power to the machine and
follow lockout / tagout procedures.
Shut off the gas before servicing the
unit.
1. Remove GAS BURNER.
2. Remove screws securing ignitor and flame sense
to burner, then remove assembly.
NOTE: If right side panel is not accessible, this
component can be serviced by removing CONTROL
PANEL.
2. Disconnect lead wires (1, Fig. 18) and igniter
cable (2, Fig. 18) from ignition module board.
Fig. 18
3. Remove the ignition module board from the
mounting bracket.
4. Reverse the procedure to install replacement
ignition module board.
Fig. 19
3. Reverse procedure to install assembly and check
for proper operation.
NOTE: Check to ensure spark gap distance is
approximately 1/8". If gap appears to be excessive or
poor sparking is occurring, then adjust.
Fig. 20
F45598 (0616) Page 10 of 35
FULL SIZE GAS CONVECTION OVEN - REMOVAL AND REPLACEMENT OF PARTS
BLOWER
Disconnect the
electrical power to the machine and
follow lockout / tagout procedures.
Shut off the gas before servicing the
unit.
Removal
1. Remove racks.
2. Lay cardboard on bottom of oven cavity to protect
surface.
3. Remove snorkel (1,
Fig. 21) mounting screws.
Fig. 21) and baffle panel (2,
Fig. 22
5. Remove blower from motor shaft using a bearing
puller.
Installation
1. Slide blower onto motor shaft until hub is
protruding 1/8".
Fig. 21
4. Loosen set screws on blower hub.
Fig. 23
2. Tighten set screws ( Fig. 22) on blower hub.
3. Install snorkel (1, Fig. 21) and baffle panel (2, Fig.
21).
4. Install racks.
5. Check oven for proper operation.
Page 11 of 35 F45598 (0616)
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