INSTALLATION &
OPERATION MANUAL
VGC SERIES GAS CONVEYOR OVENS
MODELS
VGC3018
VGC3624
VGC3632
VGC4018
VGC4824
VGC4832
VGC6024
VGC6032
ML-126196
ML-114829
ML-114830
ML-126197
ML-114831
ML-114832
ML-114834
ML-114835
VULCAN-HART COMPANY, P.O. BOX 696, LOUISVILLE, KY 40201-0696, TEL. (502) 778-2791
FORM 31057 (5-98)
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TABLE OF CONTENTS
GENERAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Installation Codes and Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Ovens Mounted on Casters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Installing Basic Oven . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Installing Stacked Ovens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Leveling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Gas Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Testing the Gas Supply System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Electrical Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Alternate Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Before First Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Lighting Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Using the Oven. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Conveyor Belt Assembling and Disassembling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Cooking Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Service and Parts Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
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Installation, Operation and Care of
MODEL VGC SERIES GAS CONVEYOR OVENS
PLEASE KEEP THIS MANUAL FOR FUTURE USE
GENERAL
Vulcan ovens are produced with quality workmanship and material. Proper installation, usage and
maintenance of your oven will result in many years of satisfactory performance.
It is suggested that you thoroughly read this entire manual and carefully follow all of the instructions
provided.
INSTALLATION
Before installing, verify that the electrical service and type of gas supply (natural or propane) agree with
the specifications on the rating plate located on the right front side panel. If the supply and equipment
requirements do not agree, do not proceed with the installation. Contact your dealer or Vulcan-Hart
Company immediately.
UNPACKING
This oven was inspected before leaving the factory. The transportation company assumes full
responsibility for safe delivery upon acceptance of the shipment. Immediately after unpacking, check
for possible shipping damage. If the oven is found to be damaged, save the packaging material and
contact the carrier within 15 days of delivery.
1. Tilt the oven on its back side.
2. Place the oven on a four-wheel dolly.
3. Move oven to its installation position.
4. Remove the oven from the dolly and place on two pieces of 2 x 4 wood.
5. Carefully unpack the oven.
Do not use the door or the handle to lift the oven.
LOCATION
When the crate is turned on its side, the oven will pass through a 34" (86 cm) door opening (or 30" [76 cm]
opening without the crate). Verify that the doors and access routes into the kitchen area will permit
clearance.
The equipment area must be kept free and clear of combustible substances.
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When installed, minimum clearance from combustible and non-combustible construction must be 2.5"
(63.5 mm) at the sides and 2.5" (63.5 mm) at the rear.
The installation location must allow adequate clearances for servicing and proper operation.
A minimum front clearance of 36" (914.4 mm) is required.
Do not obstruct the flow of combustion and ventilation air. Adequate clearance for air openings into
the combustion chamber must be provided. Make sure there is an adequate supply of air in the room
to replace air taken out by the ventilating system.
Information on the construction and installation of ventilating hoods may be obtained from the
standard for "Vapor Removal from Cooking Equipment," NFPA No. 96 (latest edition), available from
the National Fire Protection Association, Batterymarch Park, Quincy, MA 02269.
The ventilation hood should extend 6" (152 mm) minimum past the oven on the front, back, and each
side of the conveyor belt.
Exhaust: Approximately 2000 CFM required for double stacked ovens.
Approximately 1500 CFM required for single oven.
Make-up air should be 65% to 80% of the exhaust air rating.
Do not permit fans to blow directly at the oven. Wherever possible, avoid open windows next to the
oven. Avoid wall-type fans which create air cross currents within the room.
INSTALLATION CODES AND STANDARDS
The oven must be installed in accordance with:
In the United States of America:
1. State and local codes.
2. National Fuel Gas Code, ANSI-Z223.1 (latest edition). Copies may be obtained from The
American Gas Association, Inc., 1515 Wilson Blvd., Arlington, VA 22209.
3. National Electrical Code, ANSI/NFPA-70 (latest edition). Copies may be obtained from The
National Fire Protection Association, Batterymarch Park, Quincy, MA 02269.
In Canada:
1. Local codes.
2. CAN/CGA-B149.1 Natural Gas Installation Code (latest edition).
3. CAN/CGA-B149.2 Propane Installation Code (latest edition), available from the Canadian Gas
Association, 178 Rexdale Blvd., Etobicoke, Ontario, Canada M9W 1R3.
4. Canadian Electrical Code, CSA C22.2 No. 3 (latest edition). Copies may be obtained from The
Canadian Standard Association, 178 Rexdale Blvd., Etobicoke, Ontario, Canada M9W 1R3.
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ASSEMBLY
Ovens Mounted on Legs or Feet
To service the oven when mounted on legs or feet, a minimum clearance of 18" (457 mm) from service
compartment is required.
Ovens Mounted on Casters
NOTICE: In order to be able to service this appliance, it must be installed with the casters supplied,
a connector complying with ANSI Z21.69 or CAN/CGA-6.16, and a quick-disconnect device complying
with ANSI Z21.41 or CAN1-6.9. It must also be installed with restraining means to guard against
transmission of strain to the connector, as specified in the appliance manufacturer's installation
instructions.
Attach the restraining device at the rear of the oven (Fig. 1).
If disconnection of the restraint is necessary, turn off the gas supply before disconnection. Reconnect
this restraint prior to turning the gas supply on and returning the oven to its installation position.
PL-41122
CONNECT GAS
LINE STRAIN
RELIEF HERE
Fig. 1
Installing Basic Oven
1. Attach the front legs by screwing them into the bottom of the oven.
2. Tilt oven forward resting it on the front legs.
3. Lift the oven from the rear.
4. Once the oven is lifted, attach the back legs.
5. The oven is now ready to be placed in its operating position.
Installing Stacked Ovens
After basic oven is installed, lift the top oven and place it on top of the bottom oven. No fasteners are
required; the weight of the oven will keep it in place.
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LEVELING
Casters for this oven are of the non-adjustable type. Therefore, the floor must be level. If floor surface
is not level, the oven will experience cooking problems.
GAS CONNECTIONS
Gas supply connections and any pipe joint compound must be resistant to the action of propane gases.
Location of the 3⁄4" gas inlet is at the back of the oven on the lower right side.
Codes require that a gas shutoff valve (available from Vulcan-Hart) must be installed in the gas line
ahead of the oven.
Connect gas supply. Make sure the pipes are clean and free of obstructions.
The ovens are equipped with fixed burner orifices which coincide with installation elevation.
Natural gas and propane gas are preset at the factory for proper operation. Store line pressures are
preset for 7" W.C. (Water Column) (1.75 kPa) for natural gas and 11" W.C. (2.75 kPa) for propane gas.
WARNING: PRIOR TO LIGHTING, CHECK ALL JOINTS IN THE GAS SUPPLY LINE FOR LEAKS.
USE SOAP AND WATER SOLUTION. DO NOT USE AN OPEN FLAME.
After piping has been checked for leaks, all piping receiving gas should be fully purged to remove air.
TESTING THE GAS SUPPLY SYSTEM
When gas supply pressure exceeds 1/2 psig (3.45 kPa), the oven and its individual shutoff valve must
be disconnected from the gas supply piping system. When gas supply pressure is 1/2 psig (3.45 kPa)
or less, the oven should be isolated from the gas supply system by closing its individual manual shutoff
valve.
ELECTRICAL CONNECTIONS
WARNING: ELECTRICAL AND GROUNDING CONNECTIONS MUST COMPLY WITH THE
APPLICABLE PORTIONS OF THE NATIONAL ELECTRICAL CODE AND/OR OTHER LOCAL
ELECTRICAL CODES.
WARNING: APPLIANCES EQUIPPED WITH A FLEXIBLE ELECTRIC SUPPLY CORD ARE
PROVIDED WITH A THREE-PRONG GROUNDING PLUG. IT IS IMPERATIVE THAT THIS PLUG BE
CONNECTED INTO A PROPERLY GROUNDED THREE-PRONG RECEPTACLE. IF THE
RECEPTACLE IS NOT THE PROPER GROUNDING TYPE, CONTACT AN ELECTRICIAN. DO NOT
REMOVE THE GROUNDING PRONG FROM THIS PLUG.
The oven is equipped with a power supply cord for service at 120 volts and 20 amps. A 20 amp
receptacle and service is required for proper operation of the oven.
Do not connect the oven to electrical supply until after gas connections have been made.
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OPERATION
WARNING: THE OVEN AND ITS PARTS ARE HOT. BE VERY CAREFUL WHEN OPERATING,
CLEANING OR SERVICING THE OVEN.
CONTROLS (Fig's. 2 and 3)
TEMPERATURE DISPLAY
READ SET POINT BUTTON
LOAD INDICATOR LIGHT
TIME DISPLAY
TIME RANGE
SWITCH
BELT SWITCH
TIME KNOB
POWER SWITCH
PL-41147-1
Fig. 2
Temperature Display
Read Set Point Button
Load Indicator Light
Time Display
— Displays actual oven cavity temperature during cooking cycle.
— Push to display set temperature.
— When lit, indicates that the heat is being provided to the oven.
— Displays actual cooking time in minutes and tenths of minutes.
Time Range Switch
— Use to set cook time range from 2 to 8 minutes, 8 to 15 minutes, or 15
to 20 minutes. Switch must be on cook time range desired in order to
change belt speed.
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Belt Switch
Power Switch
Time Knob
— Push switch to ON to start the conveyor belt; push to OFF to stop the
conveyor belt.
— Push to ON to start the oven; push to OFF to stop the oven. When the
power switch is pushed to ON, ignition occurs automatically.
— After the Time Range Switch has been set to the desired time range,
turn the knob clockwise to increase the cook time or counterclockwise
to decrease the cook time until it reaches the time desired on the time
display.
SET POINT
CYCLE TIME
MAN. RESET
PROP. BAND
DOOR FLAP
PL-41124-1
Fig. 3
Cycle Time
Man. Reset
Set Point
— This is a service control only. Do not touch this control.
— This is a service control only. Do not touch this control.
— Set point adjustment control. To adjust the set point, locate the Set
Point knob behind the door flap. Press the Read Set Point button so
that the set point is displayed, and at the same time, turn the Set Point
knob until the desired set point temperature appears in the digital
display. Release the Read Set Point button. Do not make any other
adjustments to this control.
Prop. Band
— This is a service control only. Do not touch this control.
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ALTERNATE CONTROLS (Fig. 4)
TEMPERATURE DISPLAY
SET POINT
INDICATOR
LIGHT
SET POINT
SET POINT ARROWS
TIME DISPLAY
TIME RANGE
SWITCH
BELT SWITCH
POWER SWITCH
TIME KNOB
DRIVE MOTOR FUSES
CONTROL CIRCUIT FUSE
PL-41123-1
Fig. 4
Temperature Display
Set Point
— Displays actual oven cavity temperature during cooking cycle.
— Push to display set temperature.
Set Point Arrows
— Press the Set Point button so that the set point is displayed, and at the
same time, press the Set Point Arrows up or down until the desired set
point temperature appears in the digital display. Release the Set
Point button. The actual oven cavity temperature will display.
Set Point Indicator Light — When lit, indicates that the heat is being provided to the oven. When
set point is reached, light will go off.
Time Display
— Displays actual cooking time in minutes and tenths of minutes.
Time Range Switch
— Use to set cook time range from 2 to 8 minutes, 8 to 15 minutes, or 15
to 20 minutes. Switch must be on cook time range desired in order to
change belt speed.
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Belt Switch
Power Switch
Time Knob
— Push switch to ON to start the conveyor belt; push to OFF to stop the
conveyor belt.
— Push to ON to start the oven; push to OFF to stop the oven. When the
power switch is pushed to ON, ignition occurs automatically.
— After the Time Range Switch has been set to the desired time range,
turn the knob clockwise to increase the cook time or counterclockwise
to decrease the cook time until it reaches the time desired on the time
display.
Control Circuit Fuse
Drive Motor Fuses
— 25 Amp. / 250V. Time delay.
— 375 ma / 250V.
BEFORE FIRST USE
Clean the protective metal oils from all surfaces of the oven. Use a non-corrosive, grease dissolving
commercial cleaner, following manufacturer's directions. Rinse thoroughly with a clean damp cloth
and wipe dry with a soft clean cloth. DO NOT hose down the oven. Do not use this oven if it's controls
have been wet. Contact your Vulcan-Hart servicer.
LIGHTING INSTRUCTIONS
Turning the Oven On
The burner control is a solid state device that automatically ignites and monitors the pilot flame. To
turn the oven on, turn the gas combination valve (Fig. 5) to ON, push the Power Switch to ON, and set
the oven temperature to desired temperature.
GAS COMBINATION
CONTROL VALVE
PL-41125-1
Fig. 5
If the burner fails to light within 90 seconds, the burner control will shut off the gas combination valve
and will lock out. To reset the burner control for restart, push the Power Switch to OFF and then to ON.
If the burner still fails to light, turn the oven off and wait for 5 minutes before restarting. If lockout occurs
again, contact your local Vulcan authorized servicer.
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Turning the Oven Off
Turn Power Switch to OFF.
Extended Shutdown
Turn Power Switch to OFF. Turn gas combination valve to OFF. Turn main gas shutoff valve to OFF.
USING THE OVEN
When power is applied to the oven, it will begin operating at the factory set temperature of 525°F
(273°C). The actual oven cavity temperature will appear in the temperature display and the Load
Indicator Light will indicate if the heat is on. To reset the set temperature, see SET POINT on page 9
or 10.
To read the temperature set point, press and hold the Read Set Point or Set Point button. The set point
will appear in the temperature display.
If the conveyor belt stalls, the time display will indicate "O.L." and the belt will automatically stop.
Remove the blockage and reset the control by moving the Belt Switch up and down. The time should
be indicated on the display again and the drive motor should restart.
On each end of the oven is a baffle (Fig. 6) which can be adjusted higher or lower to accommodate the
height of the product being cooked. To raise or lower the baffles, use insulated gloves and loosen the
two thumb screws (Fig. 6), readjust baffle height, then retighten the two thumb screws.
BAFFLE
THUMB SCREWS
PL-41126-1
Fig. 6
Loading and Unloading the Oven
Place product in utensils (if required) and set utensils or products on the entrance end of the belt, but
not in the oven tunnel. Remove utensils or products from the oven after they completely clear the oven
tunnel.
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Air Distribution Panels
The oven is equipped with a top and a bottom air distribution panel. These panels regulate the quantity
of air on the top and bottom of the product that is being cooked. They have been adjusted at the factory
for proper baking performance. Some products may need additional panel adjustments. This should
be done by a Vulcan-Hart authorized servicer.
CLEANING
WARNING: DISCONNECT ELECTRICAL POWER SUPPLY BEFORE CLEANING.
Daily
Clean the outside of the oven daily by wiping with a clean damp cloth.
Avoid using abrasive powders or pads; these cleaners may damage the finish.
Remove the crumb trays on each side of the oven (Fig. 7) and clean in a sink as you would any normal
utensil. Also remove the center crumb tray (Fig. 7) and clean it. To remove the center crumb tray:
1. Remove the front panel by grasping each side of the door handle and lifting up.
2. Swing the bottom of the front panel out. Lower panel and pull away.
3. Before removing the crumb tray, loosen the conveyor belt (see Conveyor Belt Removal in this
manual) and brush away the crumbs under the belt.
4. After cleaning the center crumb tray, replace the tray and replace the front panel by reversing the
procedure.
Replace right-hand and left-hand crumb trays.
CRUMB TRAYS
PL-41127-1
Fig. 7
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Conveyor
To maintain proper belt tension the conveyor belt will have to be adjusted to remove any slack in the
belt.
1. To tension the belt, locate the two adjustment screws (Fig. 8) on the right hand end (facing machine)
of the conveyor assembly. Loosen the nuts on the inside of the of the conveyor rack and turn the
adjusting screws clockwise to increase belt tension. Be sure to adjust both screws an equal
amount.
2. Retighten the nuts on the inside of the conveyor rack.
When the conveyor belt adjustment is at its maximum and the belt is still slack, remove one link from
the belt.
1. Locate the conveyor belt splicing strand and remove it as shown in the CONVEYOR BELT
ASSEMBLING AND DISASSEMBLING (Fig. 12).
2. Remove one conveyor link and set the tension screws at their minimum by turning them
counterclockwise. Adjust both screws an equal amount.
3. Reinstall the splicing strand as shown in the CONVEYOR BELT ASSEMBLING AND
DISASSEMBLING (Fig. 12), and readjust the belt tensions with the adjusting screws.
Two ways to remove the conveyor for cleaning:
1. Conveyor Belt Removal
a. Loosen belt tension screws at the end of the belt track (Fig. 8).
b. Locate the wide end-hooks of the splicing strands where the belt should be disconnected.
c. To remove splicing strands, follow the directions shown in CONVEYOR BELT ASSEMBLING
AND DISASSEMBLING in this manual.
d. To replace belt, reverse this procedure.
BELT TENSION SCREWS
PL-41128-1
Fig. 8
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2. Conveyor Assembly Removal
a. Remove conveyor crumb trays (see Fig. 7).
b. Remove cover where conveyor shaft enters the left-hand control box (Fig. 9).
REMOVE COVER
PL-41129-1
Fig. 9
c. Lift up the drive end of the conveyor assembly and slide the conveyor assembly into the oven
tunnel to remove the tension on the drive chain.
d. Slip the drive chain off the conveyor drive sprocket (Fig. 10).
PL-41130
Fig. 10
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e. Pull the entire conveyor assembly from the oven (Fig. 11).
PL-41131
Fig. 11
f. Take conveyor assembly to cleaning area.
g. To replace conveyor assembly, reverse this procedure.
Weekly
CAUTION: Intake fans and slots on the back of the oven and control box must be cleaned
weekly. Any obstructions may cause motor damage.
Use a long bristle brush to clean these areas.
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CONVEYOR BELT ASSEMBLING AND DISASSEMBLING (Fig. 12)
Install the conveyor belt so that it always runs in
the direction indicated by this arrow — the closed
end of the loop toward the direction of travel.
1
The arrows in the belt illustrate the movement of
the splicing strand between steps.
When bending the splicing strand, try to limit
bending to straight portions of the strand rather
than in the "Z" bend area.
2
3
4
Splice one side completely before starting the
other side.
5
After completely splicing the belt, it is advisable to
go along the width of the belt straightening the
spliced-in strand.
6
Depending upon the width of the belt, there might
be one, two, or three splicing strands.
7
PL-52997
Fig. 12
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COOKING CHART
The times and temperatures shown in this chart are suggested only. Experiment with your food
products to determine the cooking temperatures and times that give you the best results.
TYPE OF
FOOD
APPROX. TIME
(IN MIN.)
TEMP.
(°F) / (°C)
PRODUCT
ITALIAN
Pizza (par baked dough)
Pizza (fresh dough)
Pizza (thick pan type)
Calzone (fresh dough)
Pastas (precooked to gratin)
4 to 4.5
5.5 to 6.5
7.5 to 8.5
5 to 6
510 / 265
510 / 265
510 / 165
510 / 265
510 / 265
5 to 6
BREADS & SUBS
BAKERY
Garlic Bread
Bread Sticks
Submarine Sandwiches
2.5 to 3.5
2.5 to 3.5
2.5 to 3.5
510 / 265
510 / 265
510 / 265
Dinner Rolls (par baked)
Dinner Rolls (fresh)
Bagels (fresh)
Croissants (par baked)
Croissants (fresh)
4 to 4.5
7.5 to 8.5
12 to 13
4 to 4.5
9 to 10
12 to 13
4.5 to 6.5
390 / 199
390 / 199
390 / 199
390 / 199
390 / 199
390 / 199
390 / 199
Muffins (fresh)
Biscuits and Cookies (fresh)
MEAT & POULTRY
FISH & SEAFOOD
Chicken Wings (precooked)
Chicken Wings (fresh)
Chicken Breasts (boneless)
B.B.Q. Ribs (fresh)
5.5 to 6.5
18 to 20
5.5 to 6.5
18 to 20
5.5 to 6.5
510 / 265
390 / 199
510 / 265
390 / 199
510 / 265
Hamburger Patties (fresh)
Shrimp (fresh)
4.5 to 5.5
6.5 to 7.5
8.5 to 9.5
6 to 7.5
510 / 265
510 / 265
510 / 265
510 / 265
Fish Filets (fresh)
Tuna Steak (fresh)
Salmon Steak (fresh)
MEXICAN
EGGS
Burritos and Enchiladas
Nachos Assorted Styles
2.5 to 3.5
2.5 to 3.5
475 / 246
475 / 246
Souffles and Omelettes
Quiches
5.5 to 6.5
9 to 10
510 / 265
390 / 199
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MAINTENANCE
WARNING: THE OVEN AND ITS PARTS ARE HOT. BE VERY CAREFUL WHEN OPERATING,
CLEANING OR SERVICING THE OVEN.
WARNING: DISCONNECT ELECTRICAL POWER SUPPLY BEFORE PERFORMING ANY
MAINTENANCE ON THE OVEN.
INSPECTION
The oven should be inspected at least annually by a Vulcan-Hart authorized servicer. More frequent
cleaning may be required due to oven grease vapors, dust, etc. It is imperative that control
compartments, burners, and circulating air passageways of the oven be kept clean.
SERVICE AND PARTS INFORMATION
To obtain service and parts information concerning this oven, contact the Vulcan-Hart Service Agency
in your area (refer to listing supplied with the oven), or Vulcan-Hart Company Service Department at
the address or phone number shown on the front cover of this manual.
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TROUBLESHOOTING
POSSIBLE CAUSES
PROBLEM
ACTION
1. Gas combination valve is in
the OFF position.
Power switch is on and oven
will not operate.
Turn the valve to ON.
1. Temperature controller
Burner is on but oven does
not start.
Adjust temperature controller.
setting
not
properly
adjusted.
2. Problem with thermocouple.
1. Conveyor belt is stuck.
1. Problem with speed control.
2. Gear loose.
Contact your Vulcan servicer.
Check the belt.
Speed control shows "OL".
Conveyor belt does not turn.
Contact your Vulcan servicer.
Contact your Vulcan servicer.
1. Chain too loose.
Conveyor belt jumps.
Burner does not ignite.
Adjust belt tension screws
evenly (see Fig. 8).
1. Gas combination valve is in
the OFF position.
Turn the valve to ON.
2. Problem with centrifugal
switch or gas valve.
Contact your Vulcan servicer.
Contact your Vulcan servicer.
Contact your Vulcan servicer.
1. Improper adjustment of the
fingers.
Cooking is not even.
1. Improper adjustment of the
burner flame.
Oven gives off gas odors.
1. Axial fan problem.
Oven is operating,
temperature controller is on,
and the burner goes off.
Contact your Vulcan servicer.
Contact your Vulcan servicer.
2. Fan circulating motor is
overloaded or overheated.
1. Blower cage is unbalanced.
Excessive vibrations of the
circulating motor.
Contact your Vulcan servicer.
FORM 31057 (5-98)
PRINTED IN U.S.A.
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