Lang 236CM Owner's manual

Lang Manufacturing 10 Sunnen Drive, St. Louis, MO 63143
Part # 2M-60803-02 Phone:[phone] Fax: [phone]
Rev. C www.langworld.com July 22, 2008
Installation, Operation, & Maintenance
Model: 236CM, 248CM, Gas Infrared Cheesemelter

Lang Manufacturing 10 Sunnen Drive, St. Louis, MO 63143
Part # 2M-60803-02 Phone:[phone] Fax: [phone]
Rev. C www.langworld.com July 22, 2008
THE INFORMATION IN THIS MANUAL IS CRUCIAL AND MUST BE
RETAINED FOR FUTURE REFERENCE. READ, UNDERSTAND AND
FOLLOW THE INSTRUCTIONS AND WARNINGS CONTAINED IN THIS
MANUAL.
DANGER POTENTIALLY HAZARDOUS SITUATION WHICH, IF NOT
AVOIDED, COULD RESULT IN DEATH.
WARNING POTENTIALLY HAZARDOUS SITUATION WHICH, IF NOT
AVOIDED, COULD RESULT IN DEATH OR SERIOUS INJURY.
CAUTION POTENTIALLY HAZARDOUS SITUATION WHICH, IF NOT
AVOIDED, MAY RESULT IN MINOR OR MODERATE INJURY.
NOTICE 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.
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.
IF YOU SMELL GAS:
1. Shut off gas to the appliance
2. Extinguish any open flame.
3. If odor continues immediately call your dealer / installer or your fire department.
Model No: Purchased From:
Serial No: Location:
Date Purchased: Date Installed:
Purchased Order No: For Service Call:

3
THE INFORMATION IN THIS MANUAL IS CRUCIAL AND MUST BE
RETAINED FOR FUTURE REFERENCE. READ, UNDERSTAND AND
FOLLOW THE INSTRUCTIONS AND WARNINGS CONTAINED IN THIS
MANUAL.
TABLE OF CONTENTS
CHAPTER PAGE
TABLE OF CONTENTS ...................................................................................... 3
READ FIRST ........................................................................................................ 4
SAFETY PROCEDURES ..................................................................................... 6
EQUIPMENT DESCRIPTION ............................................................................. 7
UNPACKING........................................................................................................ 8
INSTALLATION .................................................................................................. 9
INITIAL START UP............................................................................................. 11
OPERATION ........................................................................................................ 12
MAINTENANCE & CLEANING......................................................................... 14
TROUBLE SHOOTING ....................................................................................... 16
PARTS LIST ......................................................................................................... 18
WIRING DIAGRAM ............................................................................................ 19

4
IMPORTANT READ FIRST IMPORTANT
CAUTION THE UNIT IS EXTREMELY HEAVY. 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 ANY STAND, COUNTER OR OTHER DEVICE ON WHICH THE UNIT WILL
BE LOCATED MUST BE DESIGNED TO SUPPORT THE WEIGHT OF THE
UNIT.
CAUTION SHIPPING STRAPS ARE UNDER TENSION AND CAN SNAP BACK WHEN
CUT.
DANGER THIS APPLIANCE MUST BE GROUNDED AT THE TERMINAL PROVIDED.
FAILURE TO GROUND THE APPLIANCE COULD RESULT IN
ELECTROCUTION AND DEATH.
WARNING INSTALLATION OF THE UNIT MUST BE DONE BY PERSONNEL
QUALIFIED TO WORK WITH ELECTRICITY AND PLUMBING. IMPROPER
INSTALLATION CAN CAUSE INJURY TO PERSONNEL AND/OR DAMAGE
TO EQUIPMENT. UNIT MUST BE INSTALLED IN ACCORDANCE WITH ALL
APPLICABLE CODES.
NOTICE The data plate is located on the left side of unit behind the control door.
The unit voltage, wattage, gas specifications, serial number, and
clearance specifications are on the data plate. This information should be
carefully read and understood before proceeding with the installation.
NOTICE 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.
NOTICE Do not install the Cheesemelter over a Charbroiler or any other open
flame appliance.
NOTICE During the first few hours of operation you may notice a small amount of
smoke coming from the unit, and a faint odor from the smoke. This is
normal for a new unit and will disappear after the first few hours of use.
CAUTION ALWAYS KEEP THE AREA NEAR THE APPLIANCE FREE FROM
COMBUSTIBLE MATERIALS.
CAUTION KEEP FLOOR IN FRONT OF EQUIPMENT CLEAN AND DRY. IF SPILLS
OCCUR, CLEAN IMMEDIATELY, TO AVOID THE DANGER OF SLIPS OR
FALLS.
WARNING KEEP WATER AND SOLUTIONS OUT OF CONTROLS. NEVER SPRAY OR
HOSE CONTROL CONSOLE, ELECTRICAL CONNECTIONS, ETC.
CAUTION 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.

5
IMPORTANT READ FIRST IMPORTANT
NOTICE Service on this, or any other, LANG appliance must be performed by
qualified personnel only. Consult your LANG authorized service agent
directory or call the factory at 314-678-6315 or www.langworld.com For
the LANG service agent nearest you.
WARNING BOTH HIGH AND LOW VOLTAGES ARE PRESENT INSIDE THIS
APPLIANCE WHEN THE UNIT IS PLUGGED/WIRED INTO A LIVE
RECEPTACLE. BEFORE CLEANING, SERVICING OR REPLACING ANY
PARTS, DISCONNECT THE UNIT FROM THE ELECTRIC POWER SUPPLY.
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.

6
SAFETY PROCEDURES
Lockout Procedure
1. Announce lockout to other personnel.
2. Turn both heat and control power off at main panel.
3. Test lockout by turning power switch on and observing if fan(s) come on.
Check heater circuit with voltmeter.
4. Perform necessary repairs or tests.
5. Turn power on at main panel.
6. Announce unit is “on” to other personnel.
Safety Precautions
The Manufacturer, Lang Manufacturing, hereby disclaims any and all responsibility for injury, damage,
loss or other claim that may occur to person or property form improper alteration, modification, addition,
operation, maintenance or service, whether it be mechanical, electrical, fuel, operator motor or otherwise,
which may occur from such improper alteration, modification, addition, operation, maintenance or service
to this piece of equipment.
Safety Considerations
Your Lang Melter is manufactured to rigid standards. This equipment is N.S.F and ETL listed and meets
safety and sanitation standards.
The presence of safety equipment control and interlocks on an appliance and attendant components of
installation cannot in and of themselves, assure absolute safety of operation. Diligent, capable, well
trained operators and maintenance personnel, as well as proper programs of operation and maintenance,
are essential to the safe and reliable operation of this appliance.
A. The responsibility of the manufacturer is to supply suitable, comprehensive instructions and
recommendations for the operation and maintenance of the appliance.
B. Trained qualified and factory-authorized personnel must perform all operation, maintenance and
repair of these appliances. It is the responsibility of the owner / operator to ensure that this
happens.
C. A regular periodic program of cleaning, inspection and maintenance must be established and
comprehensive maintenance records maintained. It is the sole responsibility of the user to establish,
schedule and enforce the frequency and scope of these programs in keeping with recommended
practice and with due consideration given to actual operating conditions.
D. The appliance must be operated within the limits, which will not exceed the working limits of any
component within the appliance as a whole.

7
EQUIPMENT DESCRIPTION
Lang Model: 236CM, 248CM
Gas Infrared Cheesemelter
Exterior
The unit dimensions are 28” (71cm) High without legs, 21” (53cm) Deep, and
36”, 48” (91cm, 122cm,) Wide dependent on the actual model number.
The Sides, Bottom, and Rear wall are of constructed stainless steel.
The melter cavity is insulated with high temperature insulation for efficiency and
reduced heat loss.
Interior
The interior dimensions are 10” (25.4cm) High, 14½” (36.8cm) deep, and 33”, 45”
(83.8cm, 114.3cm) Wide.
The melter comes standard with one rack, which can be placed in four different
positions.
The melter has a rack sensitive micro-switch for a quick and easy activation.
Controls
Power Switch Applies power to the unit for operation
Mode Switch Sets the mode between Constant heat and Automatic
heat
Manual Gas Valve Turns main gas valve on
Micro-Switch Activates main burner when in Automatic Mode

8
UNPACKING
CAUTION THE UNIT IS EXTREMELY HEAVY. 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 ANY STAND, COUNTER OR OTHER DEVICE ON WHICH THE UNIT WILL
BE LOCATED MUST BE DESIGNED TO SUPPORT THE WEIGHT OF THE
UNIT.
CAUTION SHIPPING STRAPS ARE UNDER TENSION AND CAN SNAP BACK WHEN
CUT.
Receiving the Unit
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
International. File your claim with the carrier.
Location
Prior to un-crating, move the unit as near 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 unit will arrive completely assembled inside a wood frame covered by
cardboard box and strapped to a skid. Remove the cardboard cover, cut the
straps and remove the wood frame.

9
INSTALLATION
DANGER THIS APPLIANCE MUST BE GROUNDED AT THE TERMINAL PROVIDED.
FAILURE TO GROUND THE APPLIANCE COULD RESULT IN
ELECTROCUTION AND DEATH.
WARNING INSTALLATION OF THE UNIT MUST BE DONE BY PERSONNEL
QUALIFIED TO WORK WITH ELECTRICITY AND PLUMBING. IMPROPER
INSTALLATION CAN CAUSE INJURY TO PERSONNEL AND/OR DAMAGE
TO EQUIPMENT. UNIT MUST BE INSTALLED IN ACCORDANCE WITH ALL
APPLICABLE CODES.
NOTICE The data plate is located on the left side of unit behind the control door.
The unit voltage, wattage, gas specifications, serial number, and
clearance specifications are on the data plate. This information should be
carefully read and understood before proceeding with the installation.
NOTICE 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.
COUNTER TOP INSTALLATION
Legs must be installed on this appliance if it is to be configured as a counter top
model.
Attach the legs to the body by screwing the threaded stud of the leg into the nut
insert provided under each bottom corner of the machine. Tighten each leg with a
wrench.
Adjust the legs so that burners are level. Leg adjustment is made by turning the
adjustable foot at the bottom of each leg. Ensure that the leg does not turn while
adjusting the foot.
WALL HUNG INSTALLATIONS
The illustration, below, shows the connection points for the gas and electrical and
how the wall bracket is to connect to the Cheesemelter.
The heat shield is shipped in the 4-inch space at the rear of the machine.
Instructions for installing the heat shield are provided with the shield. Follow the
instructions carefully. It is important to remember to remove the knockouts from
the front edge of the machine after the heat shield is installed.
Minimum clearance from the cooking surface below to the bottom of this appliance
is 17 inches.
A wall hanging bracket is provided. It is shipped in the 4-inch space at the rear of
the machine. Attach the bracket to the wall studs then hang the machine on the
bracket.
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).
Each appliance requires a 115 volt grounded supply at 1 amp.
Supply wire size must be large enough to carry the amperage load for the number
of appliances being installed. Wire size information can be found on the data plate.
The electrical diagram for the unit is behind the lower front access panel.

10
INSTALLATION CONT’D
GAS CONNECTION
This appliance must be installed under a ventilation hood. The installation of any
components such as vent hoods, grease extractors, fire and smoke detection
devices, or fire extinguisher systems, must conform to N.F.P.A Standard #96, latest
edition.
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.
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 regulator on this appliance is set to 6 inches water column for natural gas and
10 inches water column for propane. A 1/8 inch NPT tap is provided on the main
manifold for checking regulator pressure.
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 10,000 BTU/hr per foot of
Cheesemelter. A 1/2 inch NPT connection is provided at the lower right rear
corner.
A gas shut off valve must be installed to the appliance and located in an accessible
area. In the event of a significant drop in gas pressure, turn the shut off valve off
and contact your gas supplier.
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 (3.45 kPA) 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 (3.45 kPA).
Test for gas leaks. Use a commercial leak detector or a soap and water solution.
NOTICE Do not install the Cheesemelter over a Charbroiler or any other open
flame appliance.
VENTILATION AND CLEARANCES
Standard minimum clearance from combustible construction is as follows:
To prevent the function of this appliance from being affected by a reduced
atmospheric pressure, adequate make-up air in the kitchen should be provided to
replace the air taken out by the ventilating system.
6” from side
0” from back
4” from floor or 12” from high heat source
When mounting over a range top griddle or any other high heat source a bottom
clearance of 12” must be maintained and the heat shield (provided with all wall
mount units) must be installed. Failure to maintain this clearance and / or to install
the heat shield will the equipment warranty