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:
Purchase Order #:
Date Installed:
For Service, Call:
Page 3
TABLE OF CONTENTS
CHAPTER PAGE
TABLE OF CONTENTS ...................................................................................... 3
READ FIRST ........................................................................................................ 4
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 CODES.
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# MH11595 Rev 2003A
4
Page 5
IMPORTANT READ FIRST IMPORTANT
CAUTION
WARNING
CAUTION
NOTICE
NOTICE
WARNING
CAUTION
KEEP FLOOR IN FRONT OF EQUIPMENT CLEAN AND DRY. IF SPILLS
OCCUR, CLEAN IMMEDIATELY, TO AVOID THE DANGER OF SLIPS OR
FALLS.
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 authorized service station directory
or call the factory at 1-800-224-LANG (5264), or WWW.LANGWORLD.COM
For the service station 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
LANG OR THEIR AUTHORIZED DISTRIBUTORS CAN CAUSE BODILY
INJURY TO THE OPERATOR AND DAMAGE TO THE EQUIPMENT AND
WILL VOID ALL WARRANTIES.
UL# MH11595 Rev 2003A
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Page 6
EQUIPMENT DESCRIPTION
Lang Model: Lang Model: GCCO-LMDR
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 Phonolic 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 GCCO-AP oven is a forced air convection oven with a vented oven cavity.
The air is driven by a 1/3 HP fan motor.
Controls
• The GCCO comes with the Lang “LMDR” Computerized controls which include:
Independent Shelf Timers for each Shelf.
Pace timers.
Shelf Compensation Timing for uniform baking.
Heat Loss Compensation for Consistent baking.
Manual Over-ride mode with a back-up thermostat.
Technical
The GCCO-LMDR 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 4000 ft.
The GCCO-LMDR has electronic ignition and requires a 120-Volt single-phase
connection.
UL# MH11595 Rev 2003A
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Page 7
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 Lang 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.
4.3 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# MH11595 Rev 2003A
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Page 8
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 CODES.
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 6-inch 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 27inch 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# MH11595 Rev 2003A
8
Page 9
INSTALLATION CONT’D
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
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.
caster against the front leg adapter with the flange of the adapter facing
Place the rigid
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.
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.
casters against the rear leg adapter with the flange of the adapter facing
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# MH11595 Rev 2003A
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Page 10
INSTALLATION CONT’D
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 4inch back clearance.
If the oven is set directly against a non-combustible back wall, maintain a 6-inch
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.
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# MH11595 Rev 2003A
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Page 11
INSTALLATION CONT’D
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 1/2inch 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.
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# MH11595 Rev 2003A
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Page 12
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.
80401-05 Pilot Orifice, Drilled .010 1 80401-10 Pilot Orifice, Drilled .018 1
80400-14 Main Burner Orifice, Drilled #53 2 80400-13 Main Burner Orifice, Drilled #43 2
Combination Gas Valve Spring,
Includes:
80505-11
NOTICE
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.
UL# MH11595 Rev 2003A
1
80505-16
12
Combination Gas Valve Spring,
Includes:
1. Spring
2. Seal Screw
3. Caution Sticker
1
Page 13
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, 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.
Once the oven has been turned on verify that the blower wheel is spinning freely in
a clockwise position and that the burners have ignited all the way.
The oven will automatically say “preht” and begin heating.
Once the oven has reached pre-programmed temp display will read “ready”.
Product may now be placed in the oven.
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# MH11595 Rev 2003A
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Page 14
Control Panel
Light Switch
Power Switch
Status Display
OPERATION
Shelf Timers
Temperature Button
Program Enable Buttons
Pace Timers
Minute Timers
UL# MH11595 Rev 2003A
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Page 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 50 degrees 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
characteristics 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# MH11595 Rev 2003A
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Page 16
OPERATION CONT’D
General
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.
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.
Do not open the oven door during baking as this will change the baking characteristics
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.
Control Panel
The Control panel consists of the following items. Detailed operational descriptions are given later in
this section.
POWER SWITCH
LIGHT SWITCH
STATUS DISPLAY
SHELF TIMERS
PACE TIMERS
MINUTE TIMERS
TEMP BUTTON
PROGRAM
ENABLE
BUTTONS
Turns the oven on and off
Momentarily will turn light on.
Displays the oven status (preheat, ready, done) and is the count down
timer.
Numbered 1 to 6, these buttons represent different shelf positions.
Button #
Labeled C, P, and E these buttons are adjustable from one to thirty minutes.
There are two “Minute” timers. “1” is programmed for one minute, “2” is
programmed for two minutes.
When pressed this button will display the temperature of the oven.
These are “hidden” buttons that allow the times of the shelf position
buttons to be set.
Shelf Position
1 Top Left
2 Top Right
3 Middle Left
4 Middle Right
5 Bottom Left
6 Bottom Right
UL# MH11595 Rev 2003A
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Status Display
The Status Display informs the operator of the oven’s status.
Preht
Ready
Cool
Hot
Done
Help
Stands for PREHEAT. The oven has been turned on and is adjusting to
the preprogrammed temperature (350°F).
The oven has reached the preset temperature and is awaiting for product to
be loaded into the oven.
The oven’s internal temperature is below what is programmed.
The oven’s internal temperature is above what is programmed.
The time has expired for that program and the product is finished.
There is a fault in the control system, the computer will not operate until
service is performed.
Control Panel Buttons
Shelf Buttons
Minute and Pace
Timers
Canceling a timer
Place the product into the oven on one of the six shelf positions. Close the
oven doors. Press the shelf position button that corresponds to the shelf
position once for “C” product, twice for “P” product, three times for “E”
product, or four times for off. A beeper will sound once the product is don
and “done” will be displayed. Press the flashing shelf to cancel the beeper.
The “1” button is preset to one minute, the “2” button is preset to two
minutes, and the “Pace “ buttons are adjustable from one to thirty minutes.
Press the button once to start the timer. The display will read out the
programmed time and then revert to the previous read out. The timers will
countdown internally. Time remaining can be recalled by pressing the
button again.
Any timer can be cancelled at any time. Press and hold the timer to be
cancelled until “cancl” appears in the display.
OPERATION CONT’D
Loading
When loading and unloading the oven, stage products and racks so the oven door is 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 an
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
UL# MH11595 Rev 2003A
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.
17
Page 18
PROGRAMMING
Pace Timers
The pace timers can be set at any time. Press and hold the “PACE” button for three seconds. The
display will read out the set time then begin to flash. Press the “1” minute button to increase the time,
or the “2” minute button to decrease the time. Once the corrected time is set, press and hold the
“PACE” button for three seconds to exit the programming mode.
Program Enable Buttons
The control can not be put into the programming mode if any of the timers are running. The two blue
dots above the “CINNABON” logo are the program enable buttons. Press the left dot then the right
dot within 3 seconds to put the control into a programming mode. Once the shelf position buttons are
set, press the left dot then the right dot within 3 seconds to exit the programming mode. There will be
no beeper sound when the buttons are pressed.
Shelf Position Buttons
Put the control into the programming mode. Press the shelf button to be adjusted once for “C” product,
twice for “P” product, or three times for “E” product. The display will read out “00:00” then begin to
flash. Press the one-minute timer button to increase the time, or the two-minute timer button to
decrease the time. Once the correct time is set move on to another shelf position button or exit the
programming mode.
UL# MH11595 Rev 2003A
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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 Lang Mfg. Prime Shine (72804-
41) oven cleaner.
• Always follow the cleaner manufacturer's instructions when using any cleaner.
• 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 Lang Mfg. Foam
Deluxe (72804-36) oven cleaner.
• Discoloration or heat tint may be removed using Lang Mfg. Carbon Release
(72804-32) oven cleaner.
• Always apply these cleaners when the oven is cold and rub in the direction of the
metal's grain.
UL# MH11595 Rev 2003A
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Page 20
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
No Display
No Fan
No Heat
Product burning
Product under done
• No power to cord outlet
• Oven unplugged from outlet
• Failed power cord or plug
• Failed power switch
• Failed pilot ignition
• Failed computer component
• No pilot ignition
• Failed door switch
• Failed computer component
• Failed motor relay
• Failed motor
• Failed Pilot ignition
• Failed computer component
• Failed probe
• Failed door switch
• Failed centrifugal switch in motor
• Failed motor
• Failed over-temperature thermostat
• Failed valve
• Product is cooked too long
• Not programmed correctly
• Failed computer component
• Failed probe
• Product is not cooking long enough
• Not programmed correctly
• Failed computer component
• Failed probe
UL# MH11595 Rev 2003A
20
Page 21
TROUBLESHOOTING CONT’D
NOTICE
WARNING
Service on this, or any other, LANG appliance must be performed by
qualified personnel only. Consult your authorized service station directory
or call the factory at 1-800-224-LANG (5264), or WWW.LANGWORLD.COM
For the service station 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 incorectly
Failed Probe
Failed computer component
Failed Valve
• No test available, operational condition
• Check probe for proper resistance*
• 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
Failed or disconnected safety
thermostat
Failed Spark Module
CAUTION
USE OF ANY REPLACEMENT PARTS OTHER THAN THOSE SUPPLIED BY
LANG 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*
• Confirm that motor is getting correct voltage*
• Check across the thermostat connectors for
continuity*
• Confirm that Spark Module is getting proper
voltage*
UL# MH11595 Rev 2003A
21
Page 22
PARTS LIST
DESCRIPTION PART NO.
Motor 1/3 HP 115/230 Volt with Momentary Switch 30200-15
Cooling Fan Motor 30200-45
Switch Micro Convection Oven Door 30301-02
Switch Toggle On-Off 30303-06
Switch Toggle Spring Return 30303-16
Thermostat Safety 490°F Open
Thermostat 450°F Oven
Terminal Block 24 Position Quick Disconnect 30503-01
Relay 24 VAC 30600-04
Contactor 2 Pole 30 Amp 24 VAC 30701-05
Power Cord with Molded Plug 31107-02
Cable Ribbon Assembly 31110-01
Transformer 115/24 VAC 31400-07
Transformer 115/12 VAC 31400-21
Lamp Socket 31602-04
Lamp Incandescent 250 Volt Clear 31603-09
Oven Lamp Lens (Watch Glass) 31604-01
Oven Lamp Lens Gasket 31604-02
Circuit Board Assembly Buzzer 40102-10
Circuit Board Front Panel 40102-15
Circuit Board Microprocessor 40102-16
Probe Pilot Flame Sensor 41100-07
Probe Temperature Sensor 41100-08
Oven Rack 50200-20
Oven Rack Slide (3 Pos.) 50200-36
Turnbuckle Assembly 50312-02
Door Left Hand 51100-45
Door Right Hand 51100-46
Panel Label, Cinnabon 60301-83
Handle Assembly, Single Handle Oven 70603-15
Knob Thermostat 450°F Oven
Window Assembly, Oven Door 71301-04
Blower Wheel 71500-05
Burner “U” Tube Steel 80002-05-1
Pilot Burner Assembly 80201-14
Pilot Tube 60102-1381
Module Spark Igniter NG & LP 80300-08
Orifice Main Burner .0890 #43 DRL NG 80400-13
Orifice Main Burner .0595 #53 DRL LP 80400-14
Orifice Pilot Burner .010 DRL LP 80401-05
Orifice Pilot Burner .018 DRL NG 80401-10
Valve Combination Gas 24 VAC NG 80505-10
Valve Combination Gas Conversion NG to LP (Includes all orifices) 60101-633
Valve Combination Gas Conversion LP to NG (Includes all orifices) 60101-632
30401-09
30402-27
70701-17
UL# MH11595 Rev 2003A
22
Page 23
WIRING DIAGRAM
UL# MH11595 Rev 2003A
23
Page 24
Lang Manufacturing Limited
WARRANTY
Warranty
to Commercial Purchasers*
(Domestic U.S., Hawaii, &
Canadian Sales only.)
Lang Manufacturing Equipment (“Lang
Equipment”) has been skillfully manufactured,
carefully inspected and packaged to meet rigid
standards of excellence. Lang warrants its
Equipment to be free from defects in material and
workmanship for (12) twelve consecutive months,
with the following conditions and subject to the
following limitations.
I. This parts and labor warranty is limited to
Lang Equipment sold to the original
commercial purchaser/users (but not original
equipment manufacturers), at its original
place of installation, in the continental United
States, Hawaii and Canada.
Quartz elements are warranted for ninety (90)
days from the date of installation.
II. Damage during shipment is to be reported to
the carrier, is not covered under this warranty,
and is the sole responsibility of
purchaser/user.
III. Lang, or an authorized service representative,
will repair or replace, at Lang’s sole election,
and Lang Equipment, including but not limited
to, safety valves, gas and electric
components, found to be defective during the
warranty period. As to warranty service in the
territory described above, Lang will absorb
labor and portal to portal transportation costs
(time & mileage) for the first (12) twelve
months from the date of installation or
eighteen (18) months from date of shipment
from Lang Manufacturing, which ever comes
first.
IV. This warranty does not cover routine
general maintenance, periodic adjustments,
as specified in operating instructions or
manuals, and consumable parts such as
quartz elements, or labor costs incurred for
removal of adjacent equipment or objects to
gain access to Lang Equipment. This
warranty does not cover defects caused by
improper installation, abuse, careless
operation, or improper maintenance of
equipment.
V. THIS WARRANTY IS EXCLUSIVE AND IS
IN LIEU OF ALL OTHER WARRANTIES,
EXPRESSED OR IMPLIED, INCLUDING
ANY IMPLIED WARRANTY OF
MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE, EACH OF
WHICH IS HEREBY EXPRESSLY
DISCLAIMED. THE REMEDIES
DESCRIBED ABOVE ARE EXCLUSIVE
AND IN NO EVENT SHALL LANG BE
LIABLE FOR SPECIAL, CONSEQUENTIAL
OR INCIDENTAL DAMAGES FOR THE
BREACH OR DELAY IN PERFORMANCE
OF THIS WARRANTY.
VI. Lang Equipment is for commercial use only.
If sold as a component of another (OEM)
manufacturer’s equipment, or if used as a
consumer product, such Equipment is sold
AS IS and without any warranty.
UL# MH11595 Rev 2003A
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