Installation,
Operation, Maintenance and
Service Instructions
Model: GCOF-PP-NAT
Star Manufacturing International 10 Sunnen Drive St. Louis, MO.63143-3800
Part Number: 2M-W740 Ph: 314-678-6315: Fax: 314-781-2714
Rev A
WWW.LANGWORLD.COM November 5, 2009
THIS MANUAL MUST BE RETAINED FOR FUTURE REFERENCE. READ, UNDERSTAND
AND FOLLOW THE INSTRUCTIONS AND WARNINGS CONTAINED IN THIS MANUAL.
DANGER
WARNING
CAUTION
NOTICE
POTENTIALLY HAZARDOUS SITUATION, WHICH, IF NOT
AVOIDED, COULD RESULT IN DEATH.
POTENTIALLY HAZARDOUS SITUATION, WHICH, IF NOT
AVOIDED, COULD RESULT IN DEATH OR SERIOUS INJURY.
POTENTIALLY HAZARDOUS SITUATION WHICH, IF NOT
AVOIDED, MAY RESULT IN MINOR OR MODERATE INJURY.
Helpful operation and installation instructions and tips are
present.
FOR YOUR SAFETY
DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE VAPORS AND LIQUIDS IN
THE VICINITY OF THIS OR ANY OTHER APPLIANCE.
POST IN A PROMINENT LOCATION
INSTRUCTIONS TO BE FOLLOWED IN THE EVENT USER SMELLS GAS. THIS
INFORMATION SHALL BE OBTAINED BY CONSULTING YOUR LOCAL GAS SUPPLIER.
AS A MINIMUM, TURN OFF THE GAS AND CALL YOUR GAS COMPANY AND YOUR
AUTHORIZED SERVICE AGENT. EVACUATE ALL PERSONNEL FROM THE AREA.
WARNING: IMPROPER INSTALLATION, ADJUSTMENT, ALTERATION, SERVICE OR
MAINTENANCE CAN CAUSE PROPERTY DAMAGE, INJURY OR DEATH. READ THE
INSTALLATION, OPERATING AND MAINTENANCE INSTRUCTIONS THOROUGHLY
BEFORE INSTALLING OR SERVICING THIS EQUIPMENT.
Model #: Purchased From:
Serial #: Location:
Date Purchased: Date Installed:
Purchase Order #: For Service, Call:
Table of Contents
Chapter Page
Table Of Contents ............................................................................3
Read First.........................................................................................4
Equipment Description .....................................................................6
Unpacking ........................................................................................7
Installation ........................................................................................8
Initial Start-Up ..................................................................................13
Operation .........................................................................................14
Maintenance & Cleaning Procedures ...............................................18
Troubleshooting ...............................................................................19
Parts List ..........................................................................................21
Wiring Diagram ................................................................................22
UL File# MH19366 3
CAUTION
CAUTION
CAUTION
WARNING
NOTICE
NOTICE
WARNING
THE OVEN WEIGHS 500 LBS. FOR SAFE HANDLING, INSTALLER
SHOULD OBTAIN HELP AS NEEDED, OR EMPLOY APPROPRIATE
MATERIALS HANDLING EQUIPMENT (SUCH AS A FORKLIFT, DOLLY, OR
PALLET JACK) TO REMOVE THE UNIT FROM THE SKID AND MOVE IT TO
THE PLACE OF INSTALLATION.
ANY STAND, COUNTER OR OTHER DEVICE ON WHICH THE OVEN WILL
BE LOCATED MUST BE DESIGNED TO SUPPORT THE WEIGHT OF THE
OVEN.
SHIPPING STRAPS ARE UNDER TENSION AND CAN SNAP BACK WHEN
CUT.
INSTALLATION OF THE UNIT MUST BE DONE BY PERSONNEL QUALIFIED
TO WORK WITH PLUMBING. IMPROPER INSTALLATION CAN CAUSE
INJURY TO PERSONNEL AND/OR DAMAGE TO EQUIPMENT. UNIT MUST
BE INSTALLED IN ACCORDANCE WITH ALL APPLICABLE CO DES.
The data plate is located above control panel behind wire mesh screen.
The oven serial number, gas specifications, and clearance specifications
are on the data plate. This information should be carefully read and
understood before proceeding with the installation.
The installation of any components such as a vent hood, grease
extractors, fire extinguisher systems, must conform to their applicable
National, State and locally recognized installation standards.
THIS APPLIANCE IS EQUIPPED WITH A 3-PRONG (GROUNDING) PLUG
FOR YOUR PROTECTION AGAINST SHOCK HAZARD AND MUST BE
PLUGGED DIRECTLY INTO A PROPERLY GROUNDED 3-PRONG
RECEPTACLE. DO NOT CUT OR REMOVE THIS GROUNDING PRONG
FROM THE PLUG.
WARNING
NOTICE
WARNING
NOTICE
CAUTION
CONVECTION OVENS INSTALLED WITH CASTERS MUST HAVE THE
FOLLOWING: A CONNECTOR THAT COMPLIES WITH THE STANDARD
FOR CONNECTORS FOR MOVABLE GAS APPLIANCES ANSI Z21.69
LATEST EDITION, A QUICK DISCONNECT THAT COMPLIES WITH THE
STANDARD FOR QUICK DISCONNECT DEVICES FOR USE WITH GAS
FUEL, ANSI Z21.141 LATEST EDITION, A TETHER OR OTHER MEANS TO
LIMIT APPLIANCE MOVEMENT WITH OUT RELIANCE ON THE GAS
SUPPLY PIPING. SECURELY ATTACH THE TETHER TO THE EYEBOLT
PROVIDED AT THE REAR OF THE APPLIANCE.
Kits designed to accommodate ovens from sea level to 5000 feet. Contact
factory for orifice sizes on installations above 5000 feet.
BEFORE LIGHTING, USE A SOAP AND WATER SOLUTION TO TEST ALL
JOINTS FOR GAS LEAKS.
During the first few hours of operation, you may notice a small amount of
smoke coming off the oven, and a faint odor from the smoke. This is
normal for a new oven and will disappear after the first few hours of use.
ALWAYS KEEP THE AREA NEAR THE APPLIANCE FREE FROM
COMBUSTIBLE MATERIALS.
UL File# MH19366 4
CAUTION
KEEP FLOOR IN FRONT OF EQUIPMENT CLEAN AND DRY. IF SPILLS
OCCUR, CLEAN IMMEDIATELY, TO AVOID THE DANGER OF SLIPS OR
FALLS.
WARNING
CAUTION
NOTICE
NOTICE
WARNING
CAUTION
KEEP WATER AND SOLUTIONS OUT OF CONTROLS. NEVER SPRAY OR
HOSE CONTROL CONSOLE.
MOST CLEANERS ARE HARMFUL TO THE SKIN, EYES, MUCOUS
MEMBRANES AND CLOTHING. PRECAUTIONS SHOULD BE TAKEN TO
WEAR RUBBER GLOVES, GOGGLES OR FACE SHIELD AND PROTECTIVE
CLOTHING. CAREFULLY READ THE WARNING AND FOLLOW THE
DIRECTIONS ON THE LABEL OF THE CLEANER TO BE USED.
Never leave a chlorine sanitizer in contact with stainless steel surfaces
longer than 10 minutes. Longer contact can cause corrosion.
Service on this or any other Lang appliance must be performed by
qualified personnel only. Consult your Lang Authorized Service Agent
Directory. You can call our toll free number 1-800-807-9054 or visit our
website WWW.STAR-MFG.COM for the service agent nearest you.
BOTH HIGH AND LOW VOLTAGES ARE PRESENT INSIDE THIS
APPLIANCE WHEN THE UNIT IS PLUGGED/WIRED INTO A LIVE
RECEPTACLE. BEFORE REPLACING ANY PARTS, DISCONNECT THE
UNIT FROM THE ELECTRIC POWER SUPPLY.
USE OF ANY REPLACEMENT PARTS OTHER THAN THOSE SUPPLIED BY
STAR OR THEIR AUTHORIZED DISTRIBUTORS CAN CAUSE BODILY
INJURY TO THE OPERATOR AND DAMAGE TO THE EQUIPMENT AND
WILL VOID ALL WARRANTIES.
IMPORTANT
The installation of the Appliance should conform to the NATIONAL FUEL GAS
CODE "ANSI Z223.1/NFPA 54 - LATEST EDITION" AND ALL LOCAL GAS COMPANY
RULES AND REGULATIONS.
IN CANADA INSTALLATION SHALL BE IN ACCORDANCE WITH THE
CURRENT CAN/CGA-B149.1 NATURAL GAS INSTALLATION CODE OR
CAN/CGA-B149.2 PROPANE INSTALLATION CODE AND LOCAL CODES
WHERE APPLICABLE.
UL File# MH19366 5
Lang Model: GCOF-PPNATFD
Equipment Description
Exterior Construction
The oven exterior dimensions are 40” (100 cm) Wide, 32” (80 cm) High, 38”
(95 cm) Deep. The Top, Front, Back, and Sides are constructed of stainless
steel with an aluminized bottom.
The oven doors come standard with a double pane window.
The door handle is constructed of Stainless Steel and Phenolic Tubing.
The oven cavity is insulated with high temperature insulation for efficiency
and reduced heat loss.
Interior Construction
The oven cavity dimensions are 29” (72.5 cm) Wide, 20” (50.84 cm) High, 21”
(53.38 cm) Deep.
The interior of the oven is constructed of porcelainized stainless steel.
Operation
The GCOF-PPNATFD oven is a forced air convection oven with a vented
oven cavity.
The air is driven by a 1/3 HP fan motor.
Controls
Complete computerized controls.
Pre-Programmable product selections.
Independent shelf timers for each shelf.
Load control through use of Cooking Curves.
Shelf compensation for uniform baking.
Solid state temperature sensing and controls.
Dual speed fan.
Manual override controls.
Technical
The GCOF-PPNATFD oven operates on either Natural Gas or Propane and
can be field converted to either gas.
Floor space required is 48” (122.6 cm) wide, 44” (112.5 cm) deep.
The oven weighs 500 lbs. (227.28 kg).
Contact the factory for correct orifice sizes when installing oven above 4000ft.
The GCOF-PPNATFD has electronic ignition and requires a 120-Volt single-
phase connection.
UL File# MH19366 6
Unpacking
Receiving the Oven
Upon receipt, check for freight damage, both visible and concealed. Visible
damage should be noted on the freight bill at the time of delivery and
signed by the carrier's agent. Concealed loss or damage means loss or
damage, which does not become apparent until the merchandise has been
unpacked. If concealed loss or damage is discovered upon unpacking,
make a written request for inspection by the carrier's agent within 15 days
of delivery. All packing material should be kept for inspection. Do not
return damaged merchandise to Star Manufacturing Company. File
your claim with the carrier.
Location
Prior to un-crating, move the oven as near to its intended location as
practical. The crating will help protect the unit from the physical damage
normally associated with moving it through hallways and doorways.
Un-crating
The oven will arrive completely assembled inside a wood frame and
strapped to a skid. Cut the straps and remove the wood frame.
CAUTION
THE OVEN WEIGHS 500 LBS. FOR SAFE HANDLING, INSTALLER
SHOULD OBTAIN HELP AS NEEDED, OR EMPLOY APPROPRIATE
MATERIALS HANDLING EQUIPMENT (SUCH AS A FORKLIFT, DOLLY, OR
PALLET JACK) TO REMOVE THE UNIT FROM THE SKID AND MOVE IT TO
THE PLACE OF INSTALLATION.
CAUTION
CAUTION
Remove oven from skid and place in intended location.
ANY STAND, COUNTER OR OTHER DEVICE ON WHICH THE OVEN WILL
BE LOCATED MUST BE DESIGNED TO SUPPORT THE WEIGHT OF THE
OVEN.
SHIPPING STRAPS ARE UNDER TENSION AND CAN SNAP BACK WHEN
CUT.
UL File# MH19366 7
Installation
WARNING
NOTICE
NOTICE
INSTALLATION OF THE UNIT MUST BE DONE BY PERSONNEL QUALIFIED
TO WORK WITH PLUMBING. IMPROPER INSTALLATION CAN CAUSE
INJURY TO PERSONNEL AND/OR DAMAGE TO EQUIPMENT. UNIT MUST
BE INSTALLED IN ACCORDANCE WITH ALL APPLICABLE CO DES.
The data plate is located above control panel behind wire mesh screen.
The oven serial number, gas specifications, and clearance specifications
are on the data plate. This information should be carefully read and
understood before proceeding with the installation.
The installation of any components such as a vent hood, grease
extractors, fire extinguisher systems, must conform to their applicable
National, State and locally recognized installation standards.
Leg Installation
Legs are available for both the single and double deck installations. Single
deck installations require a 27-inch leg. Double deck installations require 6inch legs or casters.
To install the 27-inch legs, place some cardboard on the floor and gently tip
the oven onto its back. Fasten two legs to the oven's front corners using
the four 5/16 inch bolts provided in the leg kit. Lift the oven onto its front
legs and block the back up using one of the 27-inch legs set upside down in
the center rear of the oven body. Install the last 27-inch leg onto the oven
body on the control side rear. Gently lift the oven rear, remove the leg set
to support the oven center and install it on the last rear corner.
To install the 6-inch legs or casters, follow the instructions in the Leg Pad
section on the following pages or in the Leg Pad box supplied with the
oven.
The adjustable feet on the bottom of each leg may be screwed in or out as
necessary to level the oven.
A torpedo level placed on an oven rack will assist in leveling the oven.
Stacking the Ovens
Remove all the plug buttons from the top of the lower oven.
Remove the stacking kit from the oven compartment of one oven and install
the 1 1/4-inch plastic bushing into the top of the lower oven.
Tip the top oven backwards and install two 3/8-inch socket head bolts,
found in the stacking kit, into the two front leg holes that match the holes in
the top of the lower oven. Install the socket head bolts with the heads of
the bolt pointing away from the oven.
Lift the top oven and gently set on top of the lower oven so that the heads of
the socket head bolts nest into the holes in the top of the lower oven.
UL File# MH19366 8
Leg Pad Adapter
Identify the front and rear leg adapters (the front adapters have two threaded
inserts, the rear has four).
Leg to Adapter Installation:
Install the leg’s threaded stud through the hole in the adapter labeled “C” with the
bent flange of the adapter facing away from the leg.
Screw the 3/4-inch nut supplied in the adapter kit onto the leg stud and tighten.
Caster to Adapter Installation:
Place the swivel caster against the front leg adapter with the flange of the
adapter facing away from the caster.
Install the four 5/16 inch bolts through the caster base and the adapter holes
labeled “A” then install the 5/16 inch nuts with washer and lock washers.
Place the rigid casters against the rear leg adapter with the flange of the adapter
facing away from the caster.
Align the caster to the holes in the adapter labeled “B”. NOTE: There are two
sets of “B” holes set at 90 from the each other. One set will create a left rear
adapter and the other set will create a right rear adapter.
Installation cont’d
Install four 5/16-inch bolts through the caster base and the adapter holes labeled
“B” then install 5/16-inch nuts with lock washers and flat washers.
Adapter to Oven Installation:
Gently tip the oven onto its back. Place the front leg adapter into the front corers
of the oven. The holes without the threaded inserts face the front of the oven
and the flange on the adapter points toward the bottom of the oven.
The edge of the leg adapter with the threaded insert slips under the flange on the
oven side, while the edge without the inserts sits on top of the threaded angle on
the oven front.
Install two 3/8-inch bolts with lock washers and flat washers through the front
holes “D” in the leg adapter and into the threaded inserts on the oven.
Thread one 3/8-inch bolt with lock washer and flat washer into the rear threaded
hole labeled “E” on each of the leg adapters.
The forward threaded hole on the front leg adapter does not get a bolt installed.
Place the rear leg adapters into the rear corners of the oven so that the adapter
is under the flange of the oven side and back. NOTE: If installing a caster place
the adapter on the oven so that the casters roll forward.
Install for 3/8-inch bolts with lock washers and flat washers through the holes
labeled “E” in the flange of the oven and into the threaded inserts of the leg
adapter.
UL File# MH19366 9
Ventilation and Clearances
Standard minimum clearance from combustible construction is as follows.
4” from side
4” from back
6” from floor
These ovens may be set directly, without legs, on a curbed base or non-
combustible floor.
If the oven is set without legs on a non-combustible floor or a curbed base,
maintain a 4-inch back clearance.
If the oven is set directly against a non-combustible back wall, maintain a 6inch clearance to the floor.
Do not install the oven closer than 4 inches from another oven on the right
hand side (control panel side).
Do not install the oven closer than 12 inches from an uncontrolled heat source
(char broiler etc.) on the right side.
Keep the appliance area free and clear of combustible material and do not
obstruct the flow of combustion or ventilation air.
The installation of any components such as a vent hood, grease extractors,
and/or fire extinguisher systems, must conform to the there applicable nationally
recognized installation standards.
Installation cont’d
WARNING
THIS APPLIANCE IS EQUIPPED WITH A 3-PRONG (GROUNDING) PLUG
FOR YOUR PROTECTION AGAINST SHOCK HAZARD AND MUST BE
PLUGGED DIRECTLY INTO A PROPERLY GROUNDED 3-PRONG
RECEPTACLE. DO NOT CUT OR REMOVE THIS GROUNDING PRONG
FROM THE PLUG.
Electrical Connection
The electrical connection must be made in accordance with local codes or in
the absence of local codes with NFPA No. 70 latest edition (in Canada use:
CAS STD. C22.1).
The electrical service entrance is provided by a cord and plug located at the
oven back directly behind the control compartment.
Each oven requires a 115-volt grounded supply and 7.1 amps.
Supply wire size must be large enough to carry the amperage load for the
number of ovens being installed. Wire size information can be found on the
oven data plate.
UL File# MH19366 10
WARNING
CONVECTION OVENS INSTALLED WITH CASTERS MUST HAVE THE
FOLLOWING: A CONNECTOR THAT COMPLIES WITH THE STANDARD
FOR CONNECTORS FOR MOVABLE GAS APPLIANCES ANSI Z21.69
LATEST EDITION, A QUICK DISCONNECT THAT COMPLIES WITH THE
STANDARD FOR QUICK DISCONNECT DEVICES FOR USE WITH GAS
FUEL, ANSI Z21.141 LATEST EDITION, A TETHER OR OTHER MEANS TO
LIMIT APPLIANCE MOVEMENT WITH OUT RELIANCE ON THE GAS
SUPPLY PIPING. SECURELY ATTACH THE TETHER TO THE EYEBOLT
PROVIDED AT THE REAR OF THE APPLIANCE.
Gas Connection
This appliance is manufactured for use with the type of gas indicated on the
data plate. Contact the factory if the gas type does not match that which is on
the data plate.
All gas connections must be in accordance with local codes and comply with
the National Fuel Gas Code ANSI Z223.1 latest edition.
An internal gas pressure regulator is located inside the control compartment.
Gas must be delivered to the appliance regulator at less than 1/2 pound of
pressure and less than 1/2-inch water column pressure drop.
The internal regulator is preset at the factory, however, due to gas pressure
variations from area to area, adjust the regulator to provide the manifold
pressure indicated on the data plate. This should be 5 inches water column for
natural gas and 10 inch water column for propane. A 1/8-inch NPT tap is
provided on the main manifold for checking regulator pressure. Access the
main manifold by removing the trim piece below the oven doors.
When replacing the 1/8-inch plug in the main manifold a joint sealant that is
resistant to the action of liquid petroleum gas must be used.
The supply piping must be of sufficient size to provide 55,000 BTU/hr per oven.
A 1/2-inch NPT connection is provided at the rear of the oven directly behind
the control compartment. Connect each oven separately.
A gas shut off valve must be installed to the oven(s) and located in an
accessible area.
This appliance and its individual shutoff valve must be disconnected from the
gas supply piping system during any pressure testing of that system at test
pressures in excess of 1/2 PSGI and the appliance must be isolated from the
gas supply piping system by closing its individual manual shutoff valve during
any pressure testing of the gas supply system at test pressures equal to or
less than 1/2 PSIG.
Test for gas leaks. Use a commercial leak detector or a soap and water
solution.
Installation cont’d
Flu Installation
A flu extension must be installed on the lower oven of a stacked set.
The extension attaches to the flu opening of the lower oven and directs the flu
products into the flu opening of the upper oven.
This extension must be installed.
The ovens may now be set into position. Be careful if sliding the ovens, they
are not designed to slide over cracks or obstructions in the floor.
UL File# MH19366 11
Installation cont’d
Gas Conversions
1. Disconnect oven from power and gas.
2. Remove bottom trim piece from oven (2 hex head bolts and 1 Phillips
screw).
3. Remove side panel from oven.
4. Disconnect black manifold pipe from 3/8” aluminum pipe at the furrel nut.
5. Remove two Phillips screws holding black manifold pipe to oven.
6. Remove black manifold pipe from oven.
7. Remove both burner orifices from manifold and replace with new orifices,
making sure to apply pipe thread compound.
8. Remove two Phillips screws holding pilot assembly to oven.
9. Remove pilot assembly from oven.
10. Remove ¼” aluminum pipe from pilot assembly.
11. Remove pilot orifice and replace with new pilot orifice.
12. Re-attach ¼” aluminum pipe to pilot assembly.
13. Re-attach pilot assembly to oven.
14. Re-install black manifold assemblies to oven, making sure that the orifices
go into the burner tubes.
15. Re-attach 3/8” aluminum pipe to black manifold assembly.
16. Remove the seal screw from the combination gas valve.
17. Remove the adjustment screw and spring from the combination valve.
18. Insert new spring into the valve and adjustment screw.
19. Re-connect oven to power and gas and check for leaks using a soap
solution.
20. Adjust gas pressure to correct water column (5”NG, 10”LP).
21. Install new seal screw provided in kit and affix “Caution” sticker to the visible
side of the combination valve.
22. Re-install bottom trim piece and side panel.
NG to LP LP to NG
Part No. Description Qty. Part No. Description Qty.
Y9-80401-05 Pilot Orifice, Drilled .010 1 Y9-80401-10 Pilot Orifice, Drilled .018 1
Y9-80400-14
Y9-80505-11
NOTICE
UL File# MH19366 12
Main Burner Orifice, Drilled
#53
Combination Gas Valve
Spring, Includes:
1. Spring
2. Seal Screw
3. Caution Sticker
Kits designed to accommodate ovens from sea level to 5000 feet. Contact
factory for orifice sizes on installations above 5000 feet.
2
1
Y9-80400-13
Y9-80505-16
Main Burner Orifice, Drilled
#43
Combination Gas Valve
Spring, Includes:
1. Spring
2. Seal Screw
3. Caution Sticker
2
1
Initial Start Up
WARNING
BEFORE LIGHTING, USE A SOAP AND WATER SOLUTION TO TEST ALL
JOINTS FOR GAS LEAKS.
Pre-Power On
After the oven is installed and connected to power & gas, prior to turning on,
verify the following:
The doors open and close freely.
All racks are in the oven correctly.
All packing materials have been removed from the inside of the
oven. All power and gas connections are tight
Power On
The pilot burner is electronically ignited. When the oven power switch is
turned On the pilot will light.
There is a lockout safety feature on the spark ignition module. If, during the
initial start-up, the pilot does not light within 30 seconds the module will turn
off all gas to the pilot burner. To reset the spark module, turn Off the power
switch for 10 seconds then turn the switch back On. This may need to be
repeated several times during the initial start-up until gas is present at the
pilot burner.
NOTICE
During the first few hours of operation you may notice a small amount of
smoke coming off the oven, and a faint odor from the smoke. This is
normal for a new oven and will disappear after the first few hours of use.
UL File# MH19366 13
Control Panel
Operation
Light switch. Inspection light only.
Push toggle switch to the up
position to inspect product. Switch
will automatically return to the off
position.
AlphaNumeric Display.
Product Select Button.
Press to select desired
product.
LIGHTS
On
Off
POWER
On
Off
Power switch.
Shelf Select Button. Press
to select shelf which
1
2
6A
7
B
product will be placed.
3
4
5
Manual Program Button.
Use when product being
cooked is for one time only.
UL File# MH19366 14
Man
Prog
8
C
9
D
0
E
Read/Clear Button. Used
to read programs, clear
Read
Clear
programs, and to access
program menu.
TYPICAL OPERATION SEQUENCE
ACTION RESULT
Turn power switch to ON.
Press a product button.
Operation cont’d
Control panel comes on, display says
“SELECT PRODUCT OR READ/CLEAR
TO PROGRAM.
Display says “PRODUCT X PREHEATING
TO XXX F”. Motor starts and oven begins
preheating to the programmed
temperature.
Beeper sounds briefly.
Open the oven doors and load the product.
Close the door and press the product
button again.
Press the shelf button(s) which correspond
to the shelf positions, which the product is
loaded (A equals the top shelf and E
equals the bottom shelf).
Beeper sounds continuously.
Press the flashing shelf button(s).
Open oven door and remove the product,
which corresponds to flashing shelf
button(s).
Display says “READY SELECT
PRODUCT TO START ”.
Beeper sounds briefly and display says
“SELECT OVEN SHELVES PRODUCT
X”.
Display shows a countdown timer and
begins to count toward zero.
Display shows “DONE PRESS SHELF
BUTTON X, REMOVE PRODUCT”, shelf
button(s) flash.
Beeper stops. Display shows “READY
SELECT PRODUCT TO START” if no
other shelves carry product or resume
count down for shelves that still have
product cooking.
UL File# MH19366 15
Operation cont’d
Hints & Suggestions
Convection ovens constantly circulate air over and around the product. This strips away the
thin layer of moisture and cool air from around the product allowing heat to penetrate more
quickly.
Cooking times can be shortened and cooking temperatures can be reduced.
To convert standard deck oven recipes, reduce the temperature 50F and the time by 25%.
Make minor adjustments as necessary.
The lower the oven temperature the more even the bake.
Always weigh your product. This will give you a more consistent size, color and quality.
Check the product near the end of the initial cooking cycle by turning on the oven light and
looking through the oven door windows.
Do not open the oven doors during baking as this will change the baking charact eristics of the
oven and make it difficult to determine a final program.
If the product is overdone on the outside and underdone on the inside, reduce the baking
temperature.
If the product is pulling away from the edge of the pan, the temperature is too high or the
cooking time too long.
The convection is a mechanical piece of equipment. The same control settings will always
give the same results. If the results vary, problems may be because of product preparation.
UL File# MH19366 16
Operation cont’d
Loading
When loading and unloading the oven, stage products and racks so the oven
doors are opened for the least amount of time.
Be sure that racks are level within the oven.
Bent or warped pans can greatly affect the evenness of the cook or bake.
If using baker’s parchment, be sure the parchment does not blow over the
product. The will create a uneven bake.
Load each shelf evenly. Spaces should be maintained equally between the
pan and oven walls, front and back.
Do not overload pan’s this will create a uneven bake.
For best baking results, load the oven from the center out during random
loading.
CAUTION
CAUTION
ALWAYS KEEP THE AREA NEAR THE APPLIANCE FREE FROM
COMBUSTIBLE MATERIALS.
KEEP FLOOR IN FRONT OF EQUIPMENT CLEAN AND DRY. IF SPILLS
OCCUR, CLEAN IMMEDIATELY, TO AVOID THE DANGER OF SLIPS OR
FALLS.
UL File# MH19366 17
WARNING
CAUTION
Maintenance & Cleaning
KEEP WATER AND SOLUTIONS OUT OF CONTROLS. NEVER SPRAY OR
HOSE CONTROL CONSOLE.
MOST CLEANERS ARE HARMFUL TO THE SKIN, EYES, MUCOUS
MEMBRANES AND CLOTHING. PRECAUTIONS SHOULD BE TAKEN TO
WEAR RUBBER GLOVES, GOGGLES OR FACE SHIELD AND PROTECTIVE
CLOTHING. CAREFULLY READ THE WARNING AND FOLLOW THE
DIRECTIONS ON THE LABEL OF THE CLEANER TO BE USED.
NOTICE
Never leave a chlorine sanitizer in contact with stainless steel surfaces
longer than 10 minutes. Longer contact can cause corrosion.
Cleaning
Always start with a cold oven.
The stainless exterior can easily be cleaned using stainless steel cleaner
Always follow the cleaner manufacturer's instructions when using any clean er.
Care should be taken to prevent caustic cleaning compounds from coming in
contact with the blower wheel.
The oven racks, rack slides, and interior may be cleaned using oven cleaner.
Discoloration or heat tint may be removed using a Carbon Release oven
cleaner.
The oven interior should be cleaned using a mild soap and a non-metal
scouring pad. DO NOT use caustic cleaners.
Always apply these cleaners when the oven is cold and rub in the direction of
the metal's grain.
UL File# MH19366 18
Troubleshooting
Symptoms
What follows is a chart of Symptoms and Possible Causes to aid in
diagnosing faults with the oven.
Refer to the Symptoms column to locate the type of failure then to the
Possible Cause for the items to be checked.
To test for a possible causes refer to the TEST section and locate the
Possible Cause then refer to test to identify test procedures
Symptom Possible Cause
Display will not come on. No power to cord outlet
Oven unplugged from outlet
Failed power cord or plug
Failed power switch
Failed pilot ignition
Contrast needs to be adjusted
Failed display board
Oven will not heat Power Switch is not “ON”
No product selected
Failed Pilot ignition
Failed Circuit Board
Failed Probe
Failed Module
Failed Centrifugal switch in Motor
Failed Motor
Failed Over-temperature Thermostat
Failed Valve
Motor will not run Power Switch is not “ON”
No product selected
Failed Pilot ignition
Failed Motor
Failed Contactor
Failed Circuit Board
Product burning Product is cooked too long
Failed circuit board
Failed probe
Product under done Product is not cooking long enough
Failed circuit board
Failed probe
UL File# MH19366 19
Troubleshooting cont’d
NOTICE
WARNING
Service on this or any other Lang appliance must be performed by
qualified personnel only. Consult your Lang Authorized Service Agent
Directory. You can call our toll free number (314) 678-6315 or visit our
website WWW.LANGWORLD.COM for the service agent nearest you.
BOTH HIGH AND LOW VOLTAGES ARE PRESENT INSIDE THIS
APPLIANCE WHEN THE UNIT IS PLUGGED/WIRED INTO A LIVE
RECEPTACLE. BEFORE REPLACING ANY PARTS, DISCONNECT THE
UNIT FROM THE ELECTRIC POWER SUPPLY.
TESTS
If an item on the list is followed by an asterisk (*), the work should be done
by a factory authorized service representative.
Possible Cause Test
Product is cooked too long No test available, operational condition
Failed Probe Check probe for proper resistance*
Failed Circuit Board
Failed Valve
Confirm that board is getting correct voltage*
Confirm that board is putting out correct voltage*
Remove the wires and check for continuity across the
coil*
Failed Centrifugal switch in
Motor
Failed Motor contactor
Failed Motor Confirm that motor is getting correct voltage*
Failed or disconnected
safety thermostat
Failed Spark Module Confirm that Spark Module is getting proper voltage*
CAUTION
USE OF ANY REPLACEMENT PARTS OTHER THAN THOSE SUPPLIED BY
STAR OR THEIR AUTHORIZED DISTRIBUTORS CAN CAUSE BODILY
INJURY TO THE OPERATOR AND DAMAGE TO THE EQUIPMENT AND
WILL VOID ALL WARRANTIES.
Remove the wires and check for continuity across them
while motor is turning*
Remove the wires from the contactor coil and check for
continuity across the contactor coil connection*
Ensure the contactor moveable points move freely up
and down*
Check across the thermostat connectors for continuity*
UL File# MH19366 20
23
28
29
27
30
25
24
32
35
33
34
3
2
1
4
5
6
22
SEE DETAIL
21
19
20
A
26
17
15
16
14
13
12
SEE DETAIL C
7
8
9
10
11
SEE DETAIL B
Model:
GCOD/F-PP & GCOD/F-PT
Gas Covection Oven
18
SK2348 Rev . B 5/30/13
PARTS LIST May 30, 2013 Rev A
Model No: GCOF-PPNATFD, GCOD-PT-NAT, GCOF-PT-NAT, GCOF-PTNATMF/CO
Commercial Full Size Gas Convection Oven
Key
Number
1 2U-71500-05 1 BLOWER WHEEL ECCO/GCCO ALL
2 Q9-GCCO-164 1 MOTOR MOUNT WELD ALL
3 2T-30401-09 1 STAT FXD 500 DEG OPEN ALL
4 PS-30200-35 1 REPLACEMENT MOTOR ALL
5 Q9-GCCO-181 1 BODY BACK ALL
6 Q9-GCCO-264-1 1 FLUE DEFLECTOR SPOT ALL
7 LM-GCCO-154 1 CAN TOP ASSY GCOF
Q9-60102-1403 1 GCCO TOP PANEL ASSY w/ MNT HRD GCOD
8 Q9-60102-140 1 GCCO RIGHT SIDE S/S GCOF
Q9-60102-1402 1 GCCO RIGHT SIDE S/S EXTRA DEEP w/ MNT HRD GCOD
9 2E-31107-02 1 CORD SET 14/3 X 8’ 15A ALL
10 Q9-60102-171 GCCO COOLING FAN KIT 120V
Q9-60102-1711 GCCO COOLING FAN KIT 220V
11 Q9-60102-904 1 ACCESS COVER - ECCO/GCCO, & HRDWR ALL
12 Q9-GCCOPPP 1 PANEL GCCO PURPLE PLUS GCOF-PPNATFD
Q9-GCCOPPT 1 PANEL GCCO PLATINUM GCOD-PT-NAT, GCOF-PT-NAT,
GCOF-PTNATMF
13 2A-50312-01 2 DOOR CHAIN ALL
Q9-50312-02 2 DOOR CHAIN AND TURNBCKL ASSY ALL
14 2P-73000-03 1 SST SPRKT40B11 5/8 BORE ALL
15 Q9-ECCO-145-1 1 MICRO SWITCH BRACKET ALL
16 2E-30301-02 1 SWITCH, MICRO ALL
17 Q9-GCCO-257-W1 2 BURNER WELD ASSY ALL
18 2E-41100-08 1 SENSOR ECCO/GCCO TEMP ALL
19 Q9-60102-115 BOTTOM PANEL WELD ASSY w/ LOGO ALL
20 Q9-GCCO-233-2 1 BOTTOM PANEL ASSY ALL
21 2M-60301-43 1 DIE CAST PLT LANG SATIN ALL
22 2B-50200-20 5 RACK ECCO/GCCO OVEN GCOF
2B-50200-31 5 RACK ECO DEEP OVEN ONLY GCOD
23 2B-50200-33 2 RACK SLIDE 5 POS ECO DEEP GCOD
2B-50200-93 2 RACK SLIDE 11 POS GCOF
24 2E-31602-04 2 LAMP SKT SNAP-IN WHT ALL
25 2S-31603-09 2 LAMPS INC 120V 40W ALL
26 Q9-60102-137 1 BODY SIDE LH GCCO GCOF
M9-60102-14021 1 GCCO LEFT SIE S/S EXTRA DEEP w/ MNT HRD GCOD
27 Q9-50312-44 1 LH DOOR ASSY E/GCCO ALL
Q9-50312-441 1 LH DOOR ASSY E/GCCO SOLID GCOFSD
28 Y9-50312-05 1 HANDLE ASSY 1 HANDLE ALL
29 Q9-50312-47 1 LH OUTER DOOR ALL
30 2Q-71301-04 1 WINDOW ASSY 9-5/8X16-5/8 ALL
31 Q9-50312-54 1 LH INNER DOOR ALL
32 Q9-50312-43 1 RH DOOR ASSY E/GCCO ALL
Q9-50312-431 1 RH DOOR ASSY E/GCCO SOLID GCOFSD
33 Q9-GCCO-161 1 SNORKEL ASSY ALL
34 Q9-GCCO-224-2 1 BAFFLE REAR ASS ALL
35 2C-20112--02 4 SCREW, SHLDR THUMB ALL
NI 2A-80400-01 2 ORIFICE SPUD UNDRILLED GCOD-NAT
NI Y9-80400-14 2 ORIFICE SPUD .0595 #53 GCOD-NAT
Part
Number
Qty
Per
Description
IMPORTANT: WHEN ORDERING, SPECIFY VOLTAGE OR TYPE GAS DESIRED PAGE 1
INCLUDE MODEL AND SERIAL NUMBER OF 1
Some items are included for illustrative purposes only and in certain instances may not be available.
6
5
7
4
3
2
1
8
2
9
11
10
DETAIL A
17
22 23 24 25
18
19
20
21
DETAIL B
Cooling Fan Kit Assy
Pilot Burner Assembly
Manifold Assembly
Available in Assembly only
14
13
12
Model:
GCOD/F-NAT & GCOD/F-LP
Detail A: Gas Covection Oven Pilot & Manifold Assy
Detail B: GCCO Cooling Fan Kit Assy
15
16
SK2310
. C 12/1/10
Rev
PARTS LIST May 30, 2013 Rev A
Model No: GCOF-PPNATFD, GCOD-PT-NAT, GCOD-PT-LP1, GCOF-PT-NAT, GCOF-PTNATMF
GAS FULL SIZE CONVECTION OVEN, PILOT BURNER, MANIFOLD & COOLING FAN ASSEMBLY
Key
Number
1 2E-41100-07 1 SENSOR FLAME PROBE GCCO ALL
2 2K-70101-32 2 STL TBE UNION 1/2CC X 1/2NPT-M ALL
3 2A-80401-04 1 PLT BURNR ORFCE.021DRL NG GCCO-NAT
2A-80401-05 1 PLT BURNR ORFCE.010DRL LP GCCO-LP
4 2C-20301-15 2 NUT HEX 10-32 PLTD ALL
5 Q9-GCCO-321 1 JOHNSON PILOT BRACKET ALL
6 2J-80201-14 1 PILOT LT BRNR HRZTL JHNSN ALL
7 2C-20101-24 2 SCRW MS PLT 10-32 X .375 ALL
8 2I-70803-02 1 CERAMIC BUSH 3 TBE ALL
9 Q9-GCCO-322 1 PILOT TUBE ALL
10 1O-71400-13 18 inch. SLEEVING-TEFLON 1/4X .030 ALL
11 2I-70803-04 6 CERMC INSLTR 9/32ID11/16 ALL
12 Q9-GCCO-706 1 MANIFOLD ASSY NAT
Q9-GCCO-706-WP 1 MANIFOLD ASSY LP
13 2K-70308-01 1 PIPE PLUG REG 1/8 NPT BLK ALL
14 Y9-80400-13 2 ORIFICE SPUD .0890 #43 NAT
Y9-80400-14 2 ORIFICE SPUD .0595 #53 LP
15 2K-70310-01 1 BELL RDUC 1/2-3/8BLK IRN ALL
16 Q9-GCCO-263-1 1 TUBE ‘A’ ALL
17 2C-20301-11 2 NUT HEX 8-32 PLTD Q9-60102-171, Q9-60102-1711
18 Q9-GCCO-801 1 GCCO COOLING FAN BRACKET Q9-60102-171, Q9-60102-1711
19 2A-70805-03 2 RBBR BMPT RECSED .25X.50 Q9-60102-171, Q9-60102-1711
20 2C-20101-64 2 SCRW PHD MS M4 X 6 PLTD PHIL Q9-60102-171, Q9-60102-1711
21 2C-20301-10 2 NUT HEX 6-32 PLTD Q9-60102-171, Q9-60102-1711
22 2K-70801-09 1 SNAP BUSH 1 SB1000-12 Q9-60102-171, Q9-60102-1711
23 2U-30200-45 1 MOTOR W/FAN AXIAL 115VAC 70 C Q9-60102-171
2U-30200-46 1 MOTOR W/FAN AXIAL 220VAC 70 C Q9-60102-1711
24 Q9-GCCO-802 2 HARNESS OVEN Q9-60102-171, Q9-60102-1711
25 2C-20109-14 2 SCRW S/S 6-32 X 2 R/H M/S Q9-60102-171, Q9-60102-1711
NI 2V-80505-11 1 CONVERSION KIT NG TO LP
NI 2V-80505-10 1 COMBI VALVE
Part
Number
Qty
Per
Description
1
IMPORTANT: WHEN ORDERING, SPECIFY VOLTAGE OR TYPE GAS DESIRED PAGE
1
INCLUDE MODEL AND SERIAL NUMBER OF
Some items are included for illustrative purposes only and in certain instances may not be available.
33
34
1
2
3
35
2
4
32
5
9
67
8
28
27
30
29
24
26
29
25
24
31
27
28
26
21
19
20
22
10
2
36
11
2
4
12
4
13
14
16
3
15
23
17
Detail C
Model:
GCCOPPP (Purple Plus) & GCCOPPT (Platinum)
Full Size Gas Control Panels Assemblies
1816
SK2346
2
. A 11/26/14
Rev
PARTS LIST May 30, 2013 Rev A
Model No: GCOF-PPNATFD, GCOD-PT-NAT, GCOF-PT-NAT/LP, GCOF-PTNATMF/CO
Commercial Full Size Gas Convection Oven Control Panel Assy
Key
Number
1 Q9-GCCOPPT 1 PANEL GCCO PLATINUM GCOD-PT-NAT, GCOF-PT-NAT,
1 Q9-GCCOPPP 1 PANEL GCCO PURPLE PLUS GCOF-PPNATFD, GCCO-PP-N,
GCCO-PP-PFD, GCCO-PPSTM-N
2 Q9-ECCO-224-2 1 TRANSFORMER COVER GCCOPPT, GCCOPPP
3 2C-20102-08 17 SCRW PHD ST 8-32X.375 GCCOPPT, GCCOPPP
4 2K-70801-04 4 SNAP BUSH 3/4 SB750-10 GCCOPPT
2K-70801-04 3 SNAP BUSH 3/4 SB750-10 GCCOPPP
5 2E-31400-07 1 XFORMR120-208-240/24V40VA GCCOPPT, GCCOPPP
6 2E-31400-27 1 XFORMR 120V/24-12 40VA GCCOPPT, GCCOPPP
7 Q9-GCCO-223-31 1 SLIDE SUPPORT C,P,PP GCCOPPT, GCCOPPP
8 2C-20102-05 2 SCRW HXHD ST 8-32X.75 GCCOPPT, GCCOPPP
9 2E-30503-01 1 TRM BLOCK 24 POS QK CON GCCOPPT, GCCOPPP
10 2E-30701-05 4 CONTC 2POLE 30A 24VAC P & GCCOPPT, GCCOPPP
11 2E-30600-02 1 RELAY 240VAC 3FORMC FLNG 2E-GCCO-610, GCCOPPP-NI, GCCOPPT-PE
2E-30600-06 1 RELAY 115VAC - 3FORMC- 2DPT 110V UNITS
12 2J-40301-49 1 CONN 9PIN CAP HOUSING 2E-GCCO-610
13 Q9-GCCO-223-5 1 LOWER SHIELD GCCOPPT, GCCOPPP
14 2T-30402-27 1 STAT ADJ 450 DEG 48 PILOT GCCOPPT, GCCOPPP
15 Q9-GCCO-223-7 1 SWITCH INSULATOR GCCOPPT, GCCOPPP
16 2E-30303-06 2 SWT TOG ON-ON DPDT BLK GCCOPPP
17 Q9-GCCO-223-8 1 AUXILLARY STAT MOUNT GCCOPPT, GCCOPPP
18 2P-70903-08 1 PLG BTN PLTD MTL 5/16
19 2R-70702-08 1 DIAL PLATE 450o STAT GCCOPPT, GCCOPPP
20 2R-70700-01 1 KNOB BLNK UNIVERSAL BLACK GCCOPPT, GCCOPPP
21 TBD KNOB ASSEMBLY
22 2E-30303-05 1 SWT PLATE ON/OFF GCCOPPT, GCCOPPP
23 2C-20101-77 2 SCRW MS PLT 6-32 X .25 GCCOPPT, GCCOPPP
24 Q9-EH-502 2 TRIMLOCK 7 3/4 GCCOPPT, GCCOPPP
25 Q9-50307-47 1 CPU MOUNT GCCOPPT, GCCOPPP
26 2C-20101-17 5 SCRW RND MS 6-32X1 PLTD GCCOPPT, GCCOPPP
27 2A-20501-01 5 SPCR FBR 1/4 OD #8 ID 3/8 GCCOPPT, GCCOPPP
28 2C-20301-10 9 NUT HEX 6-32 PLTD GCCOPPT, GCCOPPP
29 2E-41800-02 2 PCB GUIDE 6675 6.675 LG GCCOPPT, GCCOPPP
30 2J-40102-W26 1 UNIVERSAL CPU PP/PT/EZO GCCOPPT, GCCOPPP
31 Q9-40102-51-2 1 CIRBD FILTER (no used w/2J-40102-W26)
32 Q9-GCCO-223-21 1 SLIDE C,P,PP GCCOPPT, GCCOPPP
33 Q9-60102-904 1 ACCESS COVER - ECCO/GCCO GCCOPPT, GCCOPPP
34 Q9-60101-882 1 CONTROL FRT W/LABEL PT-ECCO/GC GCCOPPT
Q9-60101-881 1 CONTROL FRT W/LABEL PP-ECCO/GC GCCOPPP, GCCOPPP-NI
35 2J-40102-25 1 DISPLAY BRD,320x240,DB170-001 GCCOPPT
2J-40102-24 1 DISPLAY 4X20 MDL.DA170-001 GCCOPPP
36 2J-80300-08 1 SPARK IGN CONTROL GCCO GCCOPPT, GCCOPPP
NI 2E-GCCO-610 1 HARNESS 24 VOLT PT & PP GCCOPPT, GCCOPPP
NI 2E-GCCO-609 1 HARNESS 120 VOLT PT & PP GCCOPPT, GCCOPPP
NI 2E-GCCO-608 1 HARNESS MOTOR PT & PP GCCOPPT, GCCOPPP
NI 2M-61111-145 1 WD GCCO-PP 120VAC GCCOPPP
NI 2M-61111-146 1 WD GCCO-PT 120VAC GCCOPPT
NI 2J-31110-W1 1 USB PNL MNT CABLE
Part
Number
Qty
Per
Description
GCOF-PTNATMF, GCOF-PTNATCO,
GCCO-PT-NCO, GCCO-PT-NFD,
GCCO-PT-PCO, GCCO-PTSTM-N
GCOD-PTNAT, GCOF-PPNATFD,
GCOF-PTNATMF
IMPORTANT: WHEN ORDERING, SPECIFY VOLTAGE OR TYPE GAS DESIRED PAGE 1
INCLUDE MODEL AND SERIAL NUMBER OF 1
Some items are included for illustrative purposes only and in certain instances may not be available.
Wiring Diagram 120-Volt
UL File# MH19366 22
WIRING DIAGRAM 220/240-Volt
UL File# MH19366 23
UL File# MH19366 24
STAR INTERNATIONAL HOLDINGS INC. COMPANY
Star - Holman - Lang - Wells - Bloomeld - Toastmaster
10 Sunnen Drive, St. Louis, MO 63143 U.S.A.
(314) 678-6303
www.star-mfg.com
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