WARNING: Read all instructions before using this appliance. If the information
in this manual is not followed exactly, a fire or explosion may result causing property damage, personal injury or death. To reduce the risk of fire, electric shock, or
injury to persons, take these precautions:
General Safety
•Be sure your appliance is properly installed and grounded by a qualified technician.
•Do not cook on a broken cooktop. If the 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 store or use gasoline or other flammable vapors and liquids in the
vicinity of this or any other appliance.
•This appliance is intended for normal family household use only. See the
Warranty. If you have any questions, contact the manufacturer.
•Always have a working smoke detector near the kitchen.
•Never use the cooktop to warm or heat a room.
•Children should not be left alone or unattended in an area where appliances
are in use. They should never be allowed to sit or stand on any part of the
appliance.
•When children become old enough to use the cooktop, they must be
instructed in safe practices.
•Do not store items of interest to children above or at the back of the cooktop.
•Do not store flammable materials on or near the cooktop.
•In the event that personal clothing catches fire, drop and roll immediately to
extinguish flames.
•Never let clothing, potholders, or other flammable materials come in contact
with elements.
•Do not clean the cooktop while it is still hot. Some cleaners produce noxious
fumes when applied to a hot surface.
•Smother flames from food fires other than grease fires with baking soda.
Never use water on cooking fires.
•Do not allow aluminum foil, plastic, paper or cloth to come in contact with a
hot element. Do not allow pans to boil dry.
•Do not repair or replace any part of the appliance unless specifically recommended in this manual. All other servicing should be referred to a qualified
technician.
•If the cooktop is near a window, be certain that curtains or any other window
covering do not blow over or near the elements; they could catch on fire.
•When using the cooktop: Do not touch the surface units or the immediate surrounding area.
•Use only dry potholders; moist or damp potholders on hot surfaces may
cause burns from steam.
•Never leave the cooktop unattended when in use. Boilovers cause smoking,
and greasy spillovers may ignite.
•Always position handles of utensils inward so they do not extend over adjacent work areas, elements, or the edge of the cooktop.
•Wear proper apparel. Loose fitting garments or hanging sleeves should never
be worn while cooking.
•Use only certain types of glass, heatproof glass, ceramic, earthenware, or
other glazed utensils that are suitable for cooktop use.
•Leave the hood ventilator on when flambéing food.
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About the Cooktop
•Smother flames from a grease fire with a close-fitting lid, cookie sheet, or
other metal tray, then turn off the element. Be careful to prevent burns. If the
flames do not go out immediately, evacuate and call the fire department.
•Do not use water, including wet dishcloths or towels on grease fires. A violent
steam explosion may result.
•Never pick up a flaming pan. You may be burned.
WARNING: To avoid electrical shock hazard, before servicing the
cooktop, switch power off at the service panel and lock the panel to
prevent the power from being switched on accidentally.
Fire Extinguishers
Use an extinguisher only if:
•You know you have a Class ABC extinguisher, and you already know how to
operate it.
•The fire is small and contained in the area where it started.
•The fire department is being called.
•You can fight the fire with your back to an exit.
Parts and Accessories
Figure 1 - Parts
22
24
OFF
OFF
HI
HI
HI
HI
LO
LO
LO
LO
OFF
LO
11
MEDMED
OFF
HI
HI
LO
HOT SURFACE
ON
1
CEM304
Table 1: Cooktop Models
#TypeSizeWattage
1Single6" (160 mm)1200 W
2Double5” / 8" (120/195 mm)750/2200 W
3Double7” / 8” (140/230 mm)1100 / 2500 W
OFF
HI
HI
LO
LO
OFF
HI
LO
MEDMED
3
1
3
3
4
5
5
OFF
HI
HI
OFF
OFF
HI
HI
HI
HI
LO
LO
LO
LO
OFF
HI
LO
HOT SURFACE
ON
4
6
HI
LO
MED
OFF
HI
HI
LO
LO
CEM365
OFF
OFF
OFF
HI
HI
HI
HI
HI
LO
LO
LO
LO
LO
OFF
HI
LO
HOT SURFACE
ON
MED
CEM456
5
4
4Single7” (180 mm)1800 W
5Bridge7” x 16” (180 x 415 mm)4000 W
6Double5” / 8" (120/195 mm)800 / 1900 W
Element ‘ON’ Indicator LightThe element “ON” indicator light glows whenever any element is turned on. The
light remains lit until all of the elements are turned off.
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The “ON” light is located in front of the control knobs
Figure 2 - “On” Indicator Light
HOT SURFACE
ON
Hot Surface Indicator LightEach element features a hot indicator light to show when the cooking surface is
too hot to touch. The signal light will turn on automatically in the area marked Hot
Surface. The light remains on until the cooking area has cooled to a safe-to-touch
temperature.
If a hot surface light is on, use caution when working or cleaning around the cooktop as the cooktop is still hot.
Control KnobsThe placement of each knob corresponds to the placement of the heating element
that it controls. To turn on any element, PUSH down on the knob and TURN in
either direction to the desired heat setting.
Custom Accessory GriddleAn anodized aluminum griddle with a flat base and sized to span the bridge ele-
ments is available. The accessory griddle, Model AEGRIDDLE, is available from
your local Thermador dealer.
Using the Cooktop
Before Using the Cooktop
for the First Time
Precautions for Long Life
and Good Appearance of
the Surface
•Remove all packing materials and literature from the cooktop surface.
•While cool, wipe with a clean, damp sponge and dry.
•Apply the Cooktop Cleaning Creme® packaged with the cooktop. Buff with a
clean cloth. (See Care and Cleaning below for daily care instructions.)
•There may be a slight odor during the first several uses; this is normal and will
disappear.
•Optimum cooking results depend on the proper cookware being selected and
used (see Getting the Most of Your Cooktop below).
•The cooking surface will hold the heat and remain hot up to 25 or 30 minutes
after the elements have been turned off.
•Read all safety precautions and Use and Care Manual information prior to
operating.
•Regular, daily care using the Cooktop Cleaning Creme® will protect the surface and make it easier to remove food soil and water spots.
•The glass ceramic cooking surface is a durable material resistant to impact
but not unbreakable if a pan or other object is dropped on it.
•Do not use aluminum foil directly on the glass; it will melt and damage the
glass surface.
•Do not allow plastic, paper, or cloth to come in contact with the hot glass surface; these items can melt or burn and damage the glass surface.
•Do not allow pans to boil dry. This can damage the pan, element and/or the
cooktop.
•Never cook food directly on the glass.
•Avoid placing a wok support ring, trivet or other metal stand on the glass surface.
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•Do not use the glass surface as a cutting board.
•Do not slide cookware across the cooking surface; it may scratch the glass.
•Do not place wet pans on the glass surface.
Operation
Radiant ElementsThis type of electric element uses a wire ribbon located under the ceramic glass
surface to provide the heat for cooking. There are an infinite number of heat settings between the LO and HI positions. Detents (fixed positions) are found at LO
and HI to define minimum and maximum heat settings. Radiant elements will
cycle on and off by design. (See Temperature Limiters, below.)
Figure 3 - Radiant Control Knob
OFF
LO
MED
Dual ElementsThe dual element consists of two radiant ribbon elements within the same heating
area. Either the small inner element or both the inner and outer elements may be
selected for use. There are detents at LO and HI with infinite settings between.
HI
Bridge Element
(36" and 45" Models Only)
To turn ON the small, inner element, push down on the control knob and turn it
counterclockwise following the single line graphic.
To turn ON both inner and outer elements together, push down on the control
knob and turn it clockwise following the double line graphic.
Figure 4 - Dual Element Control Knob
OFF
HI
HI
LOLO
The Bridge element consists of 3 separate elements that can be operated in 2 different ways:
•Use of either one or both of the circular elements independently.
•Use of both circular elements plus the Bridge element simultaneously with a
single control.
When all 3 elements are used, it creates an oblong heating area. This oblong
shape is ideal for griddles, open roasters and poachers. Pans should have a flat
bottom and match the bridge cooking area as closely as possible.
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Bridge Operations for Models
CEM365 and CEM 456
Each switch setting has a detent at LO and HI.
OFF
HI
HI
To use the Bridge elements, push down and turn the
right rear knob clockwise to any setting between LO
and HI. This knob now controls the operation of the
right front, right rear and bridge elements together.
To use only the right rear element, push down and
turn the knob counterclockwise to any setting
LO
LO
OFF
LO
HI
between LO and HI.
To use only the right front element, push down and
turn the right front knob in either direction to any heat
setting.
MED
Figure 5 - Bridge Control Knob
Temperature LimitersEach radiant heating element has its own sensor to protect the glass cooking sur-
face from extreme high temperatures. The limiters will operate automatically by
cycling the element off regardless of the cook setting.
Although cycling is normal, any one of the following conditions can activate the
limiter and cause it to cycle on and off more than usual:
•The base of the pan is not making full contact with the heating surface (due to
a warped or uneven base).
•The pan is too small for the size of the element.
•The pan has boiled dry.
•The material or shape of the pan is slow to transfer the heat.
Retained Heat
CAUTION: The glass cooking surface retains heat and stays hot
after the element(s) have been turned off. The retained heat may be
used to hold foods at serving temperatures for a short time.
Note for Owners of White CooktopsWhen an element is hot, there is a light green tint on the cooking surface. This is
normal and will disappear after several minutes as the surface cools down.
Getting the Most Out
of Your Cooktop
Using Proper Cookware
Cookware CharacteristicsThe choice of pans directly affects the cooking speed and uniformity. For best
results select pans with the following features:
Flat Bases
When a pan is hot, the base (pan bottom) should rest evenly on the surface without wobbling (rocking). Flat, medium-to-heavy-weight pans are best.
To test the flatness of your pans:
Turn the pan upside down on the countertop and place a ruler flat against the bottom of the pan. The bottom of the pan and the straight edge of the ruler should be
flush against each other.
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Figure 6 - Testing for Flatness
Another simple test to determine even heat distribution across the cookware bottom is to place 1” (25.4 mm) of water in the pan. Bring the water to a boil and
observe the location of the bubbles as the water starts to boil. Good, flat cookware
will have an even distribution of bubbles over the bottom surface area.
Diameter
The base of the pan should cover or match the diameter of the element being
used. Pans may overhang the element area by 1” (25.4 mm) all around.
Tight Fitting Lid
A lid shortens cooking time by holding the heat inside the pan.
Specialty Pans
Specialty pans, such as griddles, roasters, pressure cookers, woks, water bath
canners and pressure canners must have the same features as described above.
(Use only a flat-bottom wok.) Never place a support ring, such as a wok ring or
trivet, on the cooking surface.
Figure 7 - Proper Cookware
CAUTION:
•Foods packaged in aluminum foil should not be placed directly on the glass
ceramic surface for cooking; aluminum foil can melt and cause permanent
damage.
•Plastic, paper and cloth can melt or burn when in contact with a hot surface.
Do not let these items come in contact with the hot glass ceramic surface.
•Do not allow pans to boil dry. This can permanently damage the pan, the element and the cooktop glass.
Cooking ChartAll these settings are recommended without the element being preheated. Use
this chart as a guide. The Heat Settings recommended on this page are based on
a 240 volt power source. If your cooktop is connected to 208 volts, the same heat
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settings apply but foods may take a little longer to finish cooking. A range of heat
settings are listed because the actual setting depends on:
1. type and quality of pan
2. type, quantity and temperature of the food
3. element used
4. the cook’s preference.
Table 2: Cooking Chart - Heat Settings
Type of FoodHeat Settings
Melting butter/chocolateLO
Delicate sauces
Finishing rice
Simmering sauces with butter and egg yolk
Bacon
Cooking vegetables, fish, broths
Eggs, fried or scrambled
Finishing cereals, pasta
Milk
Pancakes
Pudding
Simmering meats
Steaming vegetables, fish, broths
Pan frying
Spaghetti sauces
Sauteed vegetables
Stewing meat, soups
Braising meat
Pan frying meat, fish,
Stir frying
Quickly brown or sear meats
Hold rapid boil
Boiling water for vegetables, pasta, rice, etc.HI
LO TO MED
MED
MED TO HI
Care and Cleaning
Before Use CareCare is easy when preventative steps are taken. For example, apply a small
amount of Cooktop Cleaning Creme® (packaged with cooktop) on a daily basis.
This provides a protective film that makes it easy to remove water spots or food
spatters. The temperature of the cooking surface reduces the protective qualities
of this cleaner. It must be reapplied before each use. Use a clean cloth and apply
Cooktop Cleaning Creme® before each use to remove dust or metal marks that
can occur on the counterlevel surface between uses.
Daily Cleaning Practices
Control KnobsPull up to remove. Slip a towel under the knob, hold edge of towel together and
pull up. Wipe with hot, soapy cloth, rinse and dry. Do not soak!
Recommended Cleaners•Cooktop Cleaning Crème® - (packaged with cooktop) – This removes soil
and provides a protective film that makes it easy to remove water spots or
food spatters. The temperature of the cooking surface reduces the protective
qualities of this cleaner. It must be reapplied before each use to prevent spatter and small food particles from baking on the surface. Use only a small
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amount; apply to a clean paper towel or cloth. Wipe on the surface and buff
with a clean dry towel. Use on a DAILY basis.
•BonAmi®: rinse and dry.
•Soft Scrub® (without bleach): rinse and dry.
•White Vinegar: rinse and dry.
•Razor blade scraper (packaged with cooktop)
The recommended cleaners indicate types of cleaners and are not endorsements.
Avoid These Cleaners•Glass cleaners which contain ammonia or chlorine bleach. These ingredients
may permanently etch or stain the cooktop.
•Caustic oven cleaners such as Easy Off® may etch the cooktop surface.
•Abrasive cleaners
•Metal scouring pads and scrub sponges such as Scotch Brite® can scratch
and / or leave metal marks.
•Soap-filled scouring pads such as SOS® can scratch the surface.
•Powder cleaners containing chlorine bleach can permanently stain cooktop.
•Flammable cleaners such as lighter fluid or WD-40.
Daily Cleaning Techniques1. Clean the surface when it is completely cool with the following exception:
remove Dry Sugar, Sugar Syrup, Tomato Products and Milk immediately with
the razor blade scraper.
Figure 8 - Scraper
CAUTION:Do not use any kind of cleaner on the glass while the sur-
face is hot; use only the razor blade scraper. The resulting fumes can
be hazardous to your health. Heating the cleaner can chemically attack
and damage the surface.
2. Wipe off spatters with a clean, damp sponge or paper towel. Rinse and dry.
Use white vinegar if smudge remains; rinse.
Figure 9 - Cleaning Creme
3. Apply a small amount of the Cooktop Cleaning Crème®. When dry, buff surface with a clean paper towel or cloth.
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Cleaning Guidelines
Table 3: Special Care Chart
Type of SoilPossible Solution
Dry sugar, sugar syrup, milk or tomato spills.
Melted plastic film or foil. All these items
REQUIRE IMMEDIATE REMOVAL.
Remove only
face is hot using the razor blade scraper.
Be sure to use a new, sharp razor in your scraper.
Burned-on food soil, dark streaks, and specks•Soften by laying a damp paper towel or sponge on top of soil
Greasy spatters•Use a soapy sponge or cloth to remove grease; rinse thor-
Metal marks: Iridescent stain•Pans with aluminum, copper or stainless steel bases may
Hard Water Spots
Hot cooking liquids dripped on surface
these types of spills while the sur-
Failure to remove these soils immediately can permanently damage the surface.
•Remove pan and turn off the element.
•Wearing an oven mitt, hold scraper at 30
not to gouge or scratch the glass. Push soil off of heated area.
•After the surface has cooled, remove the residue and apply the
Cooktop Cleaning Creme®.
for about 30 minutes.
•Use a plastic scrubber and Cooktop Cleaning Creme® or use
the razor blade scraper. Rinse and dry.
oughly and dry. Apply Cooktop Cleaning Creme®.
leave marks. Treat immediately, after surface has cooled, with
the Cooktop Cleaning Creme. If this does not remove the
metal marks, try a mild abrasive (Bon Ami®, Soft Scrub® without bleach) with a dampened paper towel. Rinse and reapply
creme. Failure to remove metal marks before the next heating
makes removal very difficult.
•The minerals in some water can be transferred onto the surface and cause stains. Use undiluted white vinegar, rinse and
dry. Recondition with Cooktop Cleaning Creme. Remove
boilovers and stains, before using the cooktop again.
o
angle, using care
Surface scratches
Small scratches are to be expected on the glass
surface, but do not affect cooking. In time, small
scratches will become smoother and much less
noticeable with daily use of the Cooktop Cleaning
Creme.
•Apply Cleaning Creme before using to remove sand-like grains
and grit such as salt and seasoning.
•Can be reduced by using pans with bases that are smooth,
clean, and dry before use. Use recommended Cooktop Cleaning Creme daily on the cooktop.
Be Careful: Diamond rings will scratch the surface.
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Service
Before Calling ServiceBefore calling for service, check these suggestions to avoid unnecessary service
charges.
Table 4: Troubleshooting Chart
QuestionSuggested Solution
Element cycles on the highest settingThis is normal. The temperature lim-
iter operates automatically to protect
the glass ceramic surface from
extreme high temperature damage.
Element cycles more than usual•Pan base is warped and not mak-
ing full contact with the heating
surface.
•Base diameter of pan is too small
for the size of the element.
•Pan ingredients have boiled dry.
•Material of pan is a poor heat conductor; heat transfers too slowly
A slight odor is noticeable when an
element is turned on
Cooktop controls will not turn on •Check the power source to see if
Replacement razor blades for the
scraper
Cooking results are not what was
expected
Green tint on white glass•This is normal and will disappear
•This is normal with new cooktops
and will disappear after several
uses
a fuse has blown or if the circuit
breaker tripped.
•Check power supply.
•The scraper is packaged with single-edge, stainless steel blades.
Use a standard single-edge blade
for replacement.
•The cooktop is not level.
•Cooking pan does not fit the surface being used.
•Cookware is not the type or size
recommended.
as the surface cools down.
Data PlateFor handy reference, the serial tag information has been affixed to the back cover.
How to Obtain ServiceFor authorized service or parts information, call the number or write to the address
listed inside the back cover.
We want you to remain a satisfied customer. If a problem comes up that cannot
be resolved to your satisfaction please let us know. Whether you write or call,
please provide us with the Model Number, Serial Number and Date of Original
Purchase or Installation.
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