LG Studio LSCE365ST User manual

Ceramic Glass Radiant Cooktop
SERVICE MANUAL
MODEL: LSCE365ST
UPCE3664ST
CAUTION
BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO : MFL41578005
May, 2010
Printed in Korea
삼흥
정판
Website: http://biz.lgservice.com
Internal Use Only

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CONTENTS ----------------------------------------------------------------------------------------------------------------------- 2-3
SAFETY PRECAUTIONS
-------------------------------------------------------------------------------------------------- 4-10
SPECIFICATIONS
--------------------------------------------------------------------------------------------------------------- 11
INSTALLATION INSTRUCTIONS
-------------------------------------------------------------------------------------- 12-18
• PREPARING THE INSTALLATION LOCATION
--------------------------------------------------------------------------- 13
• DIMENSIONS AND CLEARANCES ------------------------------------------------------------------------------------------- 14
• ELECTRICAL CONNECTIONS ------------------------------------------------------------------------------------------------- 15
• ELECTRICAL CONNECTIONS (cont.) ------------------------------------------------------------------------------------ 16-18
• FINAL CHECK ----------------------------------------------------------------------------------------------------------------------- 18
COOKWARE TIPS ---------------------------------------------------------------------------------------------------------- 19-20
• SELECTING COOKWARE ------------------------------------------------------------------------------------------------------- 19
• SELECTING COOKWARE (cont.) ---------------------------------------------------------------------------------------------- 20
CLEANING AND CARE --------------------------------------------------------------------------------------------------- 21-22
DESCRIPTION OF THE FEATURE
---------------------------------------------------------------------------------------- 23
OPERATING INSTRUCTIONS
------------------------------------------------------------------------------------------ 24-29
• BEFORE USING THE COOKTOP --------------------------------------------------------------------------------------------- 24
• SETTING THE CONTROLS ----------------------------------------------------------------------------------------------------- 24
• SETTING THE CONTROLS (cont.) ---------------------------------------------------------------------------------------- 25-26
• USING THE WARMING ZONE ------------------------------------------------------------------------------------------------- 27
• USING THE BRIDGE COOKING ZONES ----------------------------------------------------------------------------------- 28
CONTENTS
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Only for training and service purposes

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• USING THE DUAL COOKING ZONES --------------------------------------------------------------------------------------- 29
• USING CHILD LOCK --------------------------------------------------------------------------------------------------------------- 29
• OTHER FUNCTIONS
-------------------------------------------------------------------------------------------------------------- 29
ELECTRIC CIRCUIT DRAWING ---------------------------------------------------------------------------------------- 30-31
DISASSEMBLY
-------------------------------------------------------------------------------------------------------------- 32-43
• Ceramic Glass Part ----------------------------------------------------------------------------------------------------------------- 32
• Bridge Element assembly ---------------------------------------------------------------------------------------------------- 33-34
• Triple Element assembly ---------------------------------------------------------------------------------------------------------- 35
• Dual Element assembly ----------------------------------------------------------------------------------------------------------- 36
• Warm Element assembly --------------------------------------------------------------------------------------------------------- 37
• Controller PCB assembly ----------------------------------------------------------------------------------------------------- 38-40
• Base assembly ------------------------------------------------------------------------------------------------------------------ 41-43
ASSEMBLY ------------------------------------------------------------------------------------------------------------------- 44-61
• Main PCB assembly ----------------------------------------------------------------------------------------------------------- 44-45
• KEY PCB assembly ---------------------------------------------------------------------------------------------------------------- 46
• Key PCB assembly & Interface PCB assembly ---------------------------------------------------------------------------- 47
• Cover Base & Fan Motor ---------------------------------------------------------------------------------------------------------- 48
• Insulator & Harness ----------------------------------------------------------------------------------------------------------------- 49
• Insulator & Supporter --------------------------------------------------------------------------------------------------------------- 50
• Base plate & Terminal block ----------------------------------------------------------------------------------------------------- 51
• Base plate & Insulator --------------------------------------------------------------------------------------------------------- 52-53
• Terminal block & Powercord ----------------------------------------------------------------------------------------------------- 54
• Base plate assembly & Insulator ----------------------------------------------------------------------------------------------- 55
• Motor bracket & Thermal insulator --------------------------------------------------------------------------------------------- 56
• Fan assembly & Base plate assembly ---------------------------------------------------------------------------------------- 57
• Base plate assembly & Main PCB assembly ------------------------------------------------------------------------------- 58
• Main PCB assembly & KEY PCB assembly --------------------------------------------------------------------------------- 59
• Base plate assembly & Warm element assembly ------------------------------------------------------------------------- 60
• Base plate assembly & Bridge element assembly -------------------------------------------------------------------- 61-62
• Base plate assembly & Triple/Dual element assembly -------------------------------------------------------------- 63-64
• Base plate assembly & Top plate assembly -------------------------------------------------------------------------------- 65
COMPONENT TEST ------------------------------------------------------------------------------------------------------- 66-70
COMPOSITION OF CONTROL
--------------------------------------------------------------------------------------------- 71
FAILURE MODE FLOW CHART --------------------------------------------------------------------------------------- 72-75
FAILURE MODE
----------------------------------------------------------------------------------------------------------------- 76
TROUBLE SHOOTING
-------------------------------------------------------------------------------------------------------- 77
EXPLODED VIEW
----------------------------------------------------------------------------------------------------------- 78-79
REPLACEMENT PARTS LIST
------------------------------------------------------------------------------------------- 80-81
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FORWARD
This LG Service Manual, “36 inch Ceramic Glass Radiant Cooktop,” provides the technician
with information on the operation and service of the Ceramic Glass Radiant Cooktop. It is to
be used as a training Service Manual. For specific information on the model being serviced,
refer to the “Owner’s Manual” or “Tech Sheet” provided with the Radiant Cooktop.
SAFETY PRECAUTIONS
• Repairs of the appliance should be carried out by a authorized service technician only.
Incorrect repairs may result in dangerous situations. If you need repairs, contact an LG
Service Center or your dealer.
• If the power cord is defective, it must be replaced by a qualified service agent with a UL
listed 150°C AWG 8 wire or one with a higher grade.
• Electrical leads and cables should not be allowed to touch the cooktop.
• Rating plate is located on the bottom side of cooktop.
• The power supply of the appliance should be turned off when it is being repaired.
WARNING: To avoid risk of severe personal injury or death, disconnect power before
working/servicing on appliance to avoid electrical shock.
WARNING: For your safety, the information in this manual must be followed to minimize
the risk of fire, electric shock, or to prevent property damage, personal injury,
or death.
WARNING:
• Unit must be disconnected from electrical supply before servicing.
• Replace all parts before operating.
• RECONNECT all grounding devices.
- Failure to do so can result in severe personal injury death or electrical shock.
• The interior parts will be very hot.
LG Electronics assumes no responsibility for any repairs made on our products by anyone
other than Authorized Service Technicians.
SAFETY PRECAUTIONS
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SAFETY PRECAUTIONS
IMPORTANT SAFETY NOTICE
The California Safe Drinking Water and Toxic Enforcement Act requires the Governor of
California to publish a list of substances known to the state to cause birth defects or other
reproductive harm and requires businesses to warn customers of potential exposure to such
substances.
SAFETY PRECAUTIONS
• Proper Installation: Be sure your appliance is properly installed and grounded by a
qualified technician in accordance with the National Electrical Code ANSI/NFPA No. 70,
latest edition in the United States, and all local code requirements. Install only per
installation instructions.
• Do not attempt to repair or replace any part of your cooktop unless it is specifically
recommended in this manual. All other service should be referred to a qualified technician.
• Remove all tape and packaging wrap before using the appliance. Destroy the carton and
plastic bags after unpacking the appliance. Never allow children to play with packaging
material.
• The safety aspects of this appliance comply with accepted technical standards.
• Know how to disconnect the electrical power to the appliance at the circuit breaker
or fuse box in case of an emergency. Mark the breaker or fuse for ease of identification
and swift action if necessary.
• Do not repair or replace any part of the appliance. All servicing should be done only by a
qualified technician to avoid the risk of personal injury and damage to the appliance.
• Never modify or alter the construction of an appliance such as removal of panels,
wire covers or any other permanent part of the product.
• Storage on appliance: Flammable materials should not be stored near or on the
cooking surface. This includes paper, plastic and cloth items, such as cookbooks,
plasticware and towels, as well as flammable liquids. Do not store explosives, such as
aerosol cans, on or near the appliance. Flammable materials may explode and result in fire
or property damage.
• Do not leave children alone. Children should not be left alone or unattended in the
area where an appliance is in use. They should never be allowed to sit or stand on any
part of the appliance.
• Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or
any other appliance.
CAUTION: Items of interest to children should not be stored in cabinets above a cooktop
or on the backsplash of a cooktop—children climbing on the cooktop to reach
items could be seriously injured.
WARNING: Never use your appliance for warming or heating a room.
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SAFETY PRECAUTIONS (cont.)
• Wear proper apparel. Loose-fitting or hanging garments should never be worn while
using the appliance. Do not let clothing or other flammable materials contact hot surfaces.
• Do not use water or flour on grease fires. Smother the fire with a pan lid, or use baking
soda, a dry chemical or foam-type extinguisher.
• When heating fat or grease, watch it closely. Fat or grease may catch fire if allowed to
become too hot.
• Use only dry pot holders. Moist or damp pot holders on hot surfaces may result in burns
from steam. Do not let the pot holders touch hot surface units. Do not use a towel or other
bulky cloth instead of a pot holder.
• Do not heat unopened food containers. Buildup of pressure may cause the container to
burst and result in injury.
CAUTION: DO NOT touch Cooking Zones or areas near these surfaces. Cooking Zones
may be hot from residual heat even though they are dark in color. Areas near
the Cooking Zones may become hot enough to cause burns. During and after
use, do not touch or let clothing or other flammable materials touch these
areas until they have had sufficient time to cool.
ELECTRICAL SAFETY
WARNING: • If the surface is cracked, switch off the appliance to avoid the possibility of
electric shock. Do not reuse your COOKTOP until the glass surface has
been changed.
• When using the COOKTOP, never use aluminum foil, products wrapped in
aluminum foil, or deep-frozen food in aluminum cookware.
• If the supply cord is damaged, it must be replaced by the manufacturer, its
service agent or similarly qualified persons in order to avoid a hazard.
• The installation and connection of the new appliance must only be carried out by qualified
personnel.
• Flush-mounted appliances may only be operated following installation in suitable cabinets
and workplaces which conform to the relevant standards. This ensures sufficient protection
against electric shock as required by certification agencies.
CHILD SAFETY
WARNING: • This appliance is not intended for use by young children or infirm persons
unless they have been adequately supervised by a responsible person to
ensure that they can use the appliance safely.
• Young children should be supervised to ensure that they do not play with
the appliance.
• Accessible parts may become hot during use. Young children should be
kept away.
SAFETY PRECAUTIONS
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SAFETY DURING USE
• This appliance may only be used for normal cooking and frying in the home. It is not
designed for commercial or industrial purposes.
• Do not use the cooktop to heat the room.
• Take care when plugging in electric appliances near the cooktop. Cords must not
come into contact with the hot surface. This could cause damage to the cooktop and cable
insulation.
• Overheated fats and oils catch fire quickly. You should supervise cooking when
preparing foods in fat or oil.
• Switch off the hob element after use by its control and do not reply on the pan
detector.
• Always keep the control panels clean and dry. Do not let liquids or grease remain on the
cooktop controls area. Spilled or burnt-on foods can activate or deactivate the appliance.
Clean the controls area thoroughly to resume normal operation of the appliance.
• Never place combustible items on the cooktop.
• Never keep any combustible items or aerosol cans in a drawer located under the
cooktop.
• Avoid placing metal cooking utensils on the cooking surface areas. Metal objects can
become hot and cause burns.
• Know which touch keypad controls each surface of the cooking zones.
• Clean the appliance regularly to keep all parts free of grease that could catch fire.
Exhaust fan ventilation hoods and grease filters should be kept clean. Do not allow grease
to accumulate on hood or filter. Greasy deposits in the fan could catch fire. Refer to hood
manufacturer's instructions for cleaning.
• Use Proper Pan Sizes. This appliance is equipped with one or more surface units of
different size. Select utensils having flat bottoms large enough to cover the surface unit
heating element. The use of undersized utensils will expose a portion of the heating
element to direct contact and may result in ignition of clothing. Proper relationship of utensil
to element will also improve efficiency.
• If pan is smaller than element, a portion of the element will be exposed to direct contact
and could ignite clothing or potholder.
• Do not place any object on or near the control keypad area in order to prevent
accidental activation of the cooktop controls.
• Utensil Handles Should Be Turned Inward and Not Extend Over Adjacent Surface
Units. To reduce the risk of burns, ignition of flammable materials, and spillage due to
unintentional contact with the utensil, the handle of a utensil should be positioned so that it
is turned inward, and does not extend over adjacent surface units.
• Never leave prepared food on the Cooking Zones. Boilovers cause smoking and greasy
spillovers that may ignite, or a pan that has boiled dry may melt or become damaged.
SAFETY PRECAUTIONS
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SAFETY DURING USE (cont.)
• Protective liners: Do not use aluminum foil to line any part of the cooktop. Only use
aluminum foil as recommended after the cooking process, if used as a cover to be placed
over the food. Any other use of aluminum foil may result in the risk of electric shock, fire or
short circuit.
• Glazed cooking utensils: Only certain types of glass, glass/ceramic, ceramic,
earthenware, or other glazed utensils are suitable for rangetop service without
breaking due to the sudden change in temperature. Check the manufacturer’s
recommendations for cooktop use.
• Ventilating hood: The ventilating hood above your cooking surface should be
cleaned frequently, so the grease from cooking vapors does not accumulate on the
hood or filter.
• Do not clean or operate a broken cooktop. If cooktop should break, cleaning solutions
and spillovers may penetrate the broken cooktop and create a risk of electric shock.
Contact a qualified technician immediately.
• Do not place hot cookware on cold cooktop glass. This could cause glass to break.
• Do not slide pans across the cooktop surface. They may scratch the cooktop surface.
• Do not let pans boil dry. This may cause permanent damage in the form of breakage,
fusion, or marking that can affect the ceramic-glass cooktop. (This type of damage is not
covered by your warranty.)
• Never leave surface units unattended at high heat settings. Boilover causes smoking
and greasy spillovers that may ignite.
• Smother fire or flame in a pan with a lid or cookie sheet. NEVER pick up or move a flaming
pan.
• Do not use water on grease fires. Use baking soda a dry chemical or foam-type
extinguisher to smother fire or flame.
• Always turn off all controls when cooking is completed.
• Be sure you know which control pads operate each surface unit. Make sure you turned
on the correct surface unit.
SAFETY PRECAUTIONS
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SAFETY WHEN CLEANING
• Always switch off the appliance before cleaning.
• For safety reasons, do not clean the appliance with a steam jet or high-pressure
washer.
• Clean the cooktop in accordance with the maintenance and cleaning instructions in
this manual.
• Steam cleaner is not to be used for cleaning of the cooktop.
• Do not use harsh abrasive cleaners or rough metal scrapers to clean the cooktop
glass/ceramic since they can scratch the surface, which may result in shattering of
the glass/ceramic.
• Clean Cooktop with Caution. Do not use sponges or cloths to wipe spills on a HOT
cooking area. Use a proper metal scraper.
COOK MEAT AND POULTRY THOROUGHLY
Cook meat and poultry thoroughly—meat to at least an INTERNAL temperature of 160°F and
poultry to at least an INTERNAL temperature of 180°F. Cooking to these temperatures
usually protects against foodborne illness.
HOW TO AVOID DAMAGE TO THE APPLIANCE
• Prior to using your cooktop for the first time, apply the recommended cooktop cleaning
creme to the glass/ceramic surface. Buff with a non-abrasive cloth or pad. This will make
cleaning easier when soiled from cooking. The special cooktop cleaning cream leaves a
protective finish on the glass/ceramic to help prevent scratches and abrasions.
• Do NOT use the glass/ceramic cooktop surface as a cutting board.
• Please be careful at the edges when moving pots and pans.
• Do not operate the cooking zones with empty pots or pans.
• Do not turn on the cooking zones with no pots or pans on the element.
• Glass/ceramic is very tough, and impervious to sharp temperature changes but is not
unbreakable. It can be damaged if hard or sharp objects fall on it.
• Be very cautious if using pots made of cast iron, or other pots with rough edges or burrs.
Moving these can cause scratches on glass/ceramic.
• If sugar or a mixture containing sugar (chocolate) falls onto a hot cooking zone and melts,
remove the spill immediately while still hot with a proper metal scraper. If the spill is left to
cool down, it may damage the glass/ceramic surface.
• Do not slide metal or glass across the cooktop surface.
• Keep meltable objects or materials away from the ceramic glass surface, for example,
plastic utensils, aluminum foil, or cooking wraps. If any materials or foodstuffs melt on the
ceramic-glass surface, these should be cleaned up immediately.
NOTE: There is a risk of burning yourself when the glass scraper is used on a hot
cooking zone!
SAFETY PRECAUTIONS
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• Do not use cookware with any dirt build up on the bottom.
• Do not use cookware with rough or uneven bottoms. This cookware can mark and scratch
the cooktop surface.
• Refer to the owners manual for proper cleaning and maintenance of the cooktop.
• Never cook directly on the galss. Always use cookware.
CAUTION: Burn Hazard: The Cooking Zones may appear cool when turned ON and
after they have been turned OFF.
DISPOSAL OF OLD APPLIANCES
To protect the environment, it is important that worn-out appliances are disposed of in the
correct manner.
• The appliance must not be disposed of with household rubbish.
• You can obtain information about collection dates or public refuse disposal sites from your
local health council or environmental health office.
CAUTION: Before disposing of old appliances please make them inoperable so they
cannot be a source of danger.
READ AND FOLLOW THIS SAFETY INFORMATION CAREFULLY.
SAVE THESE INSTRUCTIONS
SAFETY PRECAUTIONS
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SPECIFICATIONS
ITEM DESCRIPTION
MODEL
Power Requirement
Max power
Radiant
Front Left
Front Right
Rear Left
Rear Right
Center
Cooling Fan motor
Control
Cook top Dimensions
Countertop Cutout Dimensions
Shipping Weight
LSCE365ST / UPCE3664ST
240/208 V~ 60 Hz.
10500 W / 7900 W
1800 W (Bridge)
3000 / 1400 W
1800 W + 800 W (Bridge)
100 W (Warm)
3000 / 2200 / 1100 W
(12 V DC, 5.5 W) X 1EA
GLASS TOUCH CONTROL
(CAPACITANCE METHOD)
3611⁄16 (932 mm) (W) x 2215⁄32 (571 mm) (D) x 4 (101.6 mm) (H)
349⁄16 (878 mm) (W) x 203⁄8(517 mm) (D)
About 54.43lb (24.68kg)
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INSTALLATION AND SERVICE MUST BE PERFORMED BY A QUALIFIED INSTALLER.
IMPORTANT: SAVE THESE INSTRUCTIONS FOR LOCAL ELECTRICAL
INSPECTOR’S USE.
READ AND SAVE THESE INSTRUCTIONS FOR FUTURE REFERENCE.
BEFORE YOU BEGIN
Read these instructions completely and carefully.
NOTES TO INSTALLER:
• Read all instructions contained in these installation instructions before installing the cooktop.
• Remove all packing material before connecting the electrical supply to the cooktop.
• Observe all governing codes and ordinances.
• Only certain cooktop models may be installed over certain built-in electric oven models.
• Be sure to leave these instructions with the consumer.
NOTE TO CONSUMER:
Keep this User’s Guide and Installation Instructions for future reference.
NOTE: This appliance must be properly grounded.
Damage caused by failure to follow these instructions is not covered by the cooktop
warranty.
UNPACKING THE COOKTOP
Unpack and visually inspect the cooktop for any damage or missing components.
Be sure the bottle of cleaner and conditioner packed in the literature bag is left where the
user can find it easily. It is important that the ceramic-glass cooktop be pretreated before
use. See CARE AND CLEANING.
INSTALLATION INSTRUCTIONS
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PREPARING THE INSTALLATION LOCATION
IMPORTANT INSTALLATION INFORMATION
• All electric cooktops run off a single phase, three-wire or four-wire cable, 240/208 volt, 60
hertz, AC-only electrical supply with ground.
• Minimum distance between cooktop and overhead cabinetry is 30 (762 mm).
• Make sure the cabinets and wall coverings around the cooktop can withstand the
temperatures (up to 93
˚ C [200 ˚ F]) generated by the cooktop.
INSTALLATION INSTRUCTIONS
30 min.
(762 mm)
** Do not obstruct these areas!
36 inch Radiant Cooktop
4X 8 (102 mm x 203 mm)
opening to route armored
cable if panel is present.
All dimensions are stated in inches and millimeters (mm).
Allow 2 (50 mm) space below the armored cable opening to clear the electric cable and
allow space for installation of the junction box on the wall at the back of the cooktop.
Radiant Cooktop
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DIMENSIONS AND CLEARANCES
CAUTION: To eliminate the risk of burns or fire by reaching over heated surfaces, cabinet
storage space located above the cooktop should be avoided. If cabinet storage
is provided, risk can be reduced by installing a range hood that projects
horizontally a minimum of 5 (127 mm) beyond the face of the cabinets.
INSTALLATION INSTRUCTIONS
Overhead cabinet should not exceed a maximum
depth of 13 (330 mm).
min. recommended
distance between
rear edge of cutout
and nearest
combustible
surface.
36 Min
(914mm) 18
(457mm)
10
(254mm)
12
(305mm)
24
(610mm)
min. from edge of
cooktop to nearest
combustible wall
(either side of unit).
Empty space is needed underneath
the cooktop for installation purposes.
Approximate location of junction box.
HK
33/4〃(95mm) 21/2〃(64mm)
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ELECTRICAL CONNECTIONS
IMPORTANT SAFETY INSTRUCTIONS
• Be sure your cooktop is installed and grounded properly by a qualified installer or service
technician.
• This cooktop must be electrically grounded in accordance with local codes or, in their
absence, with the National Electrical Code ANSI/NFPA No. 70, latest edition in the United
States.
PROVIDING THE ELECTRICAL CONNECTION
Install the junction box under the cabinet and run 120/240 or 120/208 volt, AC wire from the
main circuit panel.
NOTE: DO NOT connect the wire to the circuit panel at this time.
WARNING: The electrical power to the cooktop must be shut off while line connections are
being made. Failure to do so could result in serious injury or death.
ELECTRICAL REQUIREMENTS
Observe all governing codes and local ordinances.
A 3-wire or 4-wire single-phase 120/240 or 120/208 volt, 60 Hz AC-only electrical supply is
required on a separate circuit fused on both sides of the line (time-delay fuse or circuit
breaker is recommended). DO NOT fuse neutral. The fuse size must not exceed the circuit
rating of the appliance specified on the nameplate.
This unit can consume up to 10,500 W at 240 VAC. A 50 Amp circuit breaker with wire
gauge #8 AWG must be used.
NOTE: Wire sizes and connections must conform with the fuse size and rating of the
appliance in accordance with the National Electrical Code ANSI/NFPA No. 70, latest edition,
and local codes and ordinances.
The appliance should be connected to the fused disconnect (or circuit breaker) box through
flexible armored or nonmetallic sheathed cable. The flexible armored cable extending from
this appliance should be connected directly to the grounded junction box. The junction box
should be located as shown on page 14 with as much slack as possible remaining in the
cable between the box and the appliance, so it can be moved if servicing is ever necessary.
A suitable strain relief must be provided to attach the flexible armored cable to the junction
box.
WARNING: An extension cord must not be used with this appliance. Such use may result
in a fire, electrical shock, or other personal injury.
ELECTRICAL CONNECTION
Connect the flexible armored cable that extends from the surface unit to the junction box using
a suitable strain relief at the point the armored cable enters the junction box. Then make the
electrical connection as follows.
INSTALLATION INSTRUCTIONS
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ELECTRICAL CONNECTIONS (cont.)
Electrical ground is required on this appliance.
This appliance is manufactured with a supply wire and a frame connected green or bare copper
grounding wire.
NOTE TO ELECTRICIAN: The armored cable leads supplied with the appliance are UL-listed
for connection to larger gauge household wiring. The insulation of the leads is rated at
temperatures much higher than the temperature rating of household wiring. The current-
carrying capacity of the conductor wire is governed by the temperature rating of the insulation
around the wire, rather than the wire gauge alone.
WARNING: DO NOT ground to a gas supply pipe. DO NOT connect to electrical power
supply until appliance is permanently grounded. Connect the ground wire
before turning on the power.
WARNING: This appliance is equipped with a copper conductor flexible cable. If
connection is made to aluminum house wiring, use only special connectors
which are approved for joining copper and aluminum wires in accordance with
the National Electrical Code and local codes and ordinances. Improper
connection of aluminum house wiring to copper leads can result in a short
circuit or fire. Follow the connector manufacturer’s recommended procedure
closely.
WHERE LOCAL CODES PERMIT CONNECTING THE APPLIANCE-GROUNDING
CONDUCTOR TO THE NEUTRAL (WHITE) WIRE
Observe all governing codes and local
ordinances.
Disconnect the power supply.
At the circuit breaker box, fuse box or junction
box, connect appliance and power supply cable
wires as shown.
WARNING: You may not ground the cooktop
through the neutral (white) wire if
cooktop is used in a new branch
circuit installation (1996 NEC),
mobile home, recreational vehicle,
or where local codes do not permit
grounding to the neutral (white)
wire. When grounding to the neutral
(white) wire is prohibited, you must use a 4-wire power supply cable. Failure to
heed this warning may result in electrocution or other serious personal injury.
INSTALLATION INSTRUCTIONS
Cable from power supply
White wire
(neutral)
Red
wires Black
wires
Green wire (ground)
Cable from cooktop
UL-listed conduit
connector
Junction box
3-WIRE GROUNDED JUNCTION BOX
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ELECTRICAL CONNECTIONS (cont.)
IF COOKTOP IS USED IN A NEW BRANCH CIRCUIT INSTALLATION (1996 NEC), MOBILE
HOME, RECREATIONAL VEHICLE, OR WHERE LOCAL CODES DO NOT PERMIT
GROUNDING TO THE NEUTRAL (WHITE) WIRE
Observe all governing codes and local
ordinances.
Disconnect the power supply.
At the circuit breaker box, fuse box or junction
box, connect appliance and power supply cable
wires as shown.
WARNING: If connecting to a 4-wire power
supply cable electrical system, the
appliance frame connected ground
wire MUST NOT be connected to
the neutral wire of the 4-wire
electrical system.
COOKTOP INSTALLATION
Visually inspect the cooktop for damage.
Make sure all cooktop screws are tight
(see below for locations).
Carefully lower the cooktop into the counter-top
cutout, making sure not to trap any wires.
NOTE: Do not use caulking compound. The
cooktop must be removable, should service be
required.
INSTALLATION INSTRUCTIONS
Cable from power supply
Ground
wire
Black
wires
Green wire(ground)
Cable from cooktop
UL-listed conduit
connector
Junction box
Red
wires
White wire
(no connection)
Screws
4-WIRE GROUNDED JUNCTION BOX
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Install the retainer brackets to the bottom of the
cooktop; then snug the bolts against the bottom
of the countertop as shown.
NOTE: The retainer brackets MUST be installed
to meet local codes or, in their absence, with the
National Electrical Code ANSI/NFPA No. 70,
latest edition.
FINAL CHECK
Check the gap between Cooktop and Countertop.
Perform a final operational check of the cooktop, making sure the cooktop powers on properly
and that each Cooking Zone operates correctly. Refer to the Operating Instructions in this guide
for details.
MODEL AND SERIAL NUMBER LOCATION
The model and serial numbers are located on a plate on the bottom of the cooktop. Please
record them in this guide; you will need them for warranty registration.
CAUTION: Do not touch cooktop glass or Cooking Zones. They may be hot enough to
cause burns.
INSTALLATION INSTRUCTIONS
Preferred
installation
Alternative
installation
Retainer
brackets
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SELECTING COOKWARE
POTS AND PANS
The better the pot, the better the cooking results.
• You can recognize good pots and pans by their
bases. The base should be as thick and flat as
possible.
• Pots with aluminum or copper bases can cause
metallic discoloring on the ceramic glass surface which is very difficult or impossible to
remove.
• Be very careful when using cast iron pots or pots with damaged bases which are rough and or
have burrs on them. Scratches can occur if they are slid across the surface.
• When cold, pot bases are normally bowed slightly in wards(concave). They should never be
bowed outwards(convex).
• If you wish to use a special type of pan (e.g., a pressure cooker, simmering pan, wok), please
follow the manufacturer’s instructions and do not use a very thin pan.
USE FLAT-BOTTOMED COOKWARE
Cookware bases must fully contact the surface of the glass/ceramic
heating area. Use flat-bottomed pans of the correct size to fit the cooking
area and the amount of food being prepared. Check for flatness by
rotating a ruler across the bottom of the cookware. In the middle of the
ruler a small amount of light must be visible (the cookware bottom must be slightly concave at
Room Temperature)
COOKWARE TIPS
LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

- 20 -
SELECTING COOKWARE (cont.)
AVOIDING SCRATCHES
It is recommended to always use heavier gauge stainless steel cookware on your ceramic
cooktop surface. This will help reduce the possibility of developing scratches on the ceramic
surface. Low-quality cookware can scratch the cooktop surface.
Cookware should always be lifted over the ceramic cooktop surface to prevent scratching.
Sliding any type of cookware over the ceramic cooktop can affect the overall appearance of the
cooktop. Over time, sliding ANY type of cookware over the ceramic cooktop may alter the
overall appearance of the cooktop. Eventually, the buildup of scratches can make cleaning the
surface difficult and degrade the overall appearance of the cooktop.
Scratches can also result from grains of sand (e.g., after washing vegetables) which are
dragged with the pot across the cooking surface.
FOR BEST RESULTS:
Always follow the recommendations for proper cookware type and size. In addition:
• Do not use dirty pans with grease buildup. Always use pans that are easy to clean after
cooking, and make sure that the bottoms of the pans are clean and dry.
• When cooking with large amounts of liquid, use large pots so that nothing can boil over.
• Do not let pans boil dry. This may cause permanent damage in the form of breakage, fusion,
or marring that can affect the ceramic cooktop. (This type of damage is not covered by your
warranty.)
• Match the pan size and Cooking Zone to the amount of food being prepared.
TIPS FOR SAVING ENERGY:
• Always position pots and pans before you switch on the Cooking Zone.
• Dirty cooking zones and cookware use more electricity.
• Whenever possible, always have the lid firmly placed
on the pots and pans so that they are completely
covered.
• Switch off the cooking zones before the end of the
cooking time to use the residual heat for keeping food
warm or for melting purpose.
• The base of the pot should have the same size as the
cooking zone.
• Using a pressure cooker shortens the cooking times
by up to 50%.
COOKWARE TIPS
LGE Internal Use OnlyCopyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes