Cosmo COS-305AGC User manual

GAS RANGE
COS-305AGC
USER MANUAL
READ AND SAVE THESE INSTRUCTIONS.
FOR RESIDENTIAL USE ONLY.
PLEASE LEAVE THIS GUIDE WITH THE HOMEOWNER.
PLEASE KEEP THIS GUIDE FOR FUTURE REFERENCE.
IMPORTANT:
INSTALLER:
HOMEOWNER:
30-IN FREESTANDING RANGE
Rev.22.07

1
THANK YOU FOR YOUR PURCHASE
Thank you for your purchase. We know that you have many brands and
products to choose from and we are honored to know that you have decided
to take one of our products into your home and hope that you enjoy it.
COSMO Appliances are designed according to the strictest safety and
performance standard for the North American market. We follow the most
advanced manufacturing philosophy. Each appliance leaves the factory after
thorough quality inspection and testing. Our distributors and our service
partners are ready to answer any questions you may have regarding how to
install, use and case for your products. We hope that this manual will help you
learn to use the product in the safest and most effective manner.
Before using this product, please read through this manual carefully. Keep
this user manual in a safe place for future reference. Please ensure that other
persons using this product are familiar with these instructions as well.
If you have any questions or concerns, please contact the dealer from whom you
purchased the product, or contact our Customer Support at:
1-888-784-3108
Reach us online at:
www.cosmoappliances.com

2
TABLE OF CONTENTS
RANGE SAFETY.................................................................................................... 3
Anti-tip Device ........................................................................................................... 4
Important Safety Instructions ................................................................................. 6
OVERVIEW..........................................................................................................10
Control Panel ............................................................................................................ 12
Clock & Timer ............................................................................................................ 12
Timed Cooking..........................................................................................................14
COOKTOP USE....................................................................................................16
Power Failure ............................................................................................................16
Cookware .................................................................................................................. 17
OVEN USE ........................................................................................................... 18
Oven Controls ........................................................................................................... 18
Tips and Techniques ...............................................................................................20
RANGE CARE ..................................................................................................... 22
Cleaning.................................................................................................................... 22
TROUBLESHOOTING......................................................................................... 25
Baking Problems...................................................................................................... 25
Cooktop Problems................................................................................................... 26
Oven Problems ........................................................................................................ 28
LIMITED WARRANTY ........................................................................................30

3
RANGE SAFETY
WARNING
WARNING
Never Operate the Top Surface Cooking Section of this Appliance
Unattended.
DO NOT ATTEMPT TO EXTINGUISH AN OIL/GREASE FIRE WITH WATER
Fire Hazard
If the information in this manual is not followed exactly, a fire or explosion
may result causing property damage, personal injury or death.
-Do not store or use gasoline or other flammable vapors and liquids in
the vicinity of this or any other appliance.
-WHAT TO DO IF YOU SMELL GAS
•Do not try to light any appliance.
•Do not touch any electrical switch.
•Do not use any phone in your building.
•Clear the room, building, or area of all occupants.
•Immediately call your gas supplier from a neighbor's phone. Follow
the gas supplier's instructions.
•If you cannot reach your gas supplier, call the fire department.
-Installation and service must be performed by a qualified installer,
service agency or the gas supplier.
•Failure to follow this warning statement could result in fire, explosion, or
burn hazard that could cause property damage, personal injury, or
death.
•If a fire should occur, keep away from the appliance and immediately
call your fire department.

4
WARNING
Tip Over Hazard
Making sure the anti-tip bracket is installed:
Anti-Tip
Bracket
Range
Foot
•A child or adult can tip the range and be killed.
•Install anti-tip bracket to floor or wall per installation instructions.
•Slide range back so rear range foot is engaged in the slow of the anti-
top bracket.
•Re-engage the anti-tip bracket if range is moved.
•Do not operate the range without anti-tip bracket installed and
engaged.
•Failure to follow these instructions can result in death or serious burns to
children and adults.
•Slide range forward.
•Look for the anti-tip bracket securely attached
to floor and wall.
•Slide range back so rear range foot is under
anti-tip bracket.
WARNING: Gas leaks cannot always be detected by smell.
Gas suppliers recommend that you use a gas detector approved by UL or
CSA.
For more information, contact your gas supplier.
WARNING: Do not install a ventilation system that blows air downward
toward this cooking appliance. This type of ventilation system may cause
ignition and combustion problems with this cooking appliance resulting in
personal injury or unintended operation.

5
Your safety and the safety of others are very important.
We have provided many important safety messages in this manual and on
your appliance. Always read and obey all safety messages.
This is the safety alert symbol.
This symbol alerts you to potential hazards that can
kill or hurt you and others.
All safety messages will follow the safety alert symbol
and either the word "DANGER," "WARNING" or
"CAUTION." These words mean:
DANGER
WARNING
You can be killed or seriously
injured if you don't immediately
follow instructions.
You can be killed or seriously
injured if you don't follow
instructions.
A potentially hazardous situation
which, if not avoided, could result
in minor or moderate injury.
CAUTION
All safety messages will tell you what the potential hazard is, tell you how
to reduce the chance of injury, and tell you what can happen if the
instructions are not followed.
In the State of Massachusetts, the following installation instructions apply:
California Proposition 65 Warning
WARNING:
Cancer and Reproductive Harm - www.P65Warnings.ca.gov.
•Installations and repairs must be performed by a qualified or licensed
contractor, plumber, or gasfitter qualified or licensed by the State of
Massachusetts.
•If using a ball valve, it shall be a T-handle type.
•A flexible gas connector, when used, must not exceed 3 feet.

6
IMPORTANT SAFETY
INSTRUCTIONS
WARNING: To reduce the risk of fire, electrical shock, injury to persons, or
damage when using the range, follow basic precautions, including the
following:
•WARNING: TO REDUCE THE RISK
OF TIPPING OF THE RANGE, THE
RANGE MUST BE SECURED BY
PROPERLY INSTALLED ANTI-TIP
DEVICES. TO CHECK IF THE
DEVICES ARE INSTALLED
PROPERLY, SLIDE RANGE
COMPLETELY FORWARD, LOOK
FOR ANTI-TIP BRACKET SECURELY
ATTACHED TO THE FLOOR OR
WALL, AND SLIDE RANGE BACK
SO THE REAR RANGE FOOT IS
UNDER ANTI-TIP BRACKET.
•WARNING: NEVER use this
appliance as a space heater to
heat or warm the room. Doing so
may result in carbon monoxide
poisoning and overheating of the
oven.
•WARNING: NEVER cover any
slots, holes or passages in the
oven bottom or cover an entire
rack with materials such as
aluminum foil. Doing so blocks
airflow through the oven and
may cause carbon monoxide
poisoning. Aluminum foil linings
may also trap heat, causing a fire
hazard.
•CAUTION: Do not store items of
interest to children in cabinets
above a range or on the back
guard of a range – children
climbing on the range to reach
items could be seriously injured.
•Do Not Leave Children Alone –
Children should not be left alone
or unattended in area where
range is in use. They should never
be allowed to sit or stand on any
part of the range.
•Wear Proper Apparel – Loose-
fitting or hanging garments
should never be worn while using
the range.
•User Servicing – Do not repair or
replace any part of the range
unless specifically recommended
in the manual. All other servicing
should be referred to a qualified
technician.
•Storage in or on Range –
Flammable materials should not
be stored in an oven or near
surface units.
•This appliance is not intended for
storage.
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7
IMPORTANT SAFETY
INSTRUCTIONS
•Do Not Use Water on Grease
Fires – Smother fire or flame or
use dry chemical or foam-type
extinguisher.
•Use Only Dry Potholders – Moist
or damp potholders on hot
surfaces may result in burns from
steam. Do not let potholder touch
hot heating elements. Do not use
a towel or other bulky cloth.
•Never Leave Surface Units
Unattended at High Heat
Settings – Boilover causes
smoking and greasy spillovers
that may ignite.
•Glazed Cooking Utensils – Only
certain types of glass,
glass/ceramic, ceramic,
earthenware, or other glazed
utensils are suitable for range-
top service without breaking due
to the sudden change in
temperature.
•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.
•Disconnect power before
servicing.
•Proper Installation – The
appliance, when installed, must
be electrically grounded in
accordance with local codes, or
in the absence of local codes,
with the National Electrical Code,
ANSI/NFPA 70 or the Canadian
Electrical Code, CSA C22.1-02. In
Canada, the appliance must be
electrically grounded in
accordance with Canadian
Electrical Code. Be sure your
appliance is properly installed
and grounded by a qualified
technician.
•Injuries may result from misuse of
appliance doors or drawers such
as stepping, leaning, or sitting on
the doors or drawers.
•Maintenance – Keep range area
clear and free from combustible
materials, gasoline, and other
flammable vapors and liquids.
•Do not let cooking grease or
other flammable materials
accumulate in or near the range.
Grease in the oven or on the
cooktop may ignite.
•Top burner flame size should be
adjusted so it does not extend
beyond the edge of the cooking
utensil. This instruction is based
on safety considerations.
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8
IMPORTANT SAFETY
INSTRUCTIONS
•Do not use replacement parts
that have not been
recommended by the
manufacturer (e.g. parts made at
home using a 3D printer).
•Clean Cooktop With Caution – If
a wet sponge or cloth is used to
wipe spills on a hot cooking area,
be careful to avoid steam burn.
Some cleaners can produce
noxious fumes if applied to a hot
surface.
•Use Care When Opening Door –
Let hot air or steam escape
before removing or replacing
food.
•Do Not Heat Unopened Food
Containers – Build-up of pressure
may cause container to burst and
result in injury.
•Keep Oven Vent Ducts
Unobstructed.
•Never broil with door open.
Open-door broiling is not
permitted due to overheating of
control knobs.
•Placement of Oven Racks –
Always place oven racks in
desired location while oven is
cool. If rack must be moved while
oven is hot, do not let potholder
contact hot heating element in
oven.
•Care must be taken to prevent
aluminum foil and meat probes
from contacting heating
elements.
•DO NOT TOUCH HEATING
ELEMENTS OR INTERIOR
SURFACES OF OVEN – Heating
elements may be hot even
though they are dark in color.
Interior surfaces of an oven
become hot enough to cause
burns. During and after use, do
not touch, or let clothing or other
flammable materials contact
heating elements or interior
surfaces of oven until they have
had sufficient time to cool. Other
surfaces of the appliance may
become hot enough to cause
burns – among these surfaces are
cooktop, burners, grates, oven
vent openings and surfaces near
these openings, oven doors,
windows of oven doors, and
crevices around the oven doors.
•Top burner flame size should be
adjusted so it does not extend
beyond the edge of the cooking
utensil.
•Have the installer show you the
location of the range gas shut-off
valve and how to turn it off if
necessary.
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9
READ AND SAVE THESE INSTRUCTIONS
IMPORTANT SAFETY
INSTRUCTIONS
•Proper Disposal of Your
Appliance – Dispose of or recycle
your appliance in accordance
with Federal and Local
Regulations. Contact your local
authorities for the
environmentally safe disposal or
recycling of your appliance.
For units with ventilating hood –
•Clean Ventilating Hoods
Frequently – Grease should not
be allowed to accumulate on
hood or filter.
•When flambé cooking under the
vent hood, turn the fan on.
For self-cleaning ranges –
•Do Not Clean Door Gasket – The
door gasket is essential for a
good seal. Care should be taken
not to rub, damage, or move the
gasket.
•Do Not Use Oven Cleaners – No
commercial oven cleaner or oven
liner protective coating of any
kind should be used in or around
any part of the oven.
•Clean Only Parts Listed in
Manual.
•Before Self-Cleaning the Oven –
Remove broiler pan and other
utensils. Wipe off all excessive
spillage before initiating the
cleaning cycle.

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OVERVIEW
Backsplash
Semi-rapid burner
Semi-rapid burner
Triple ring burner
Auxiliary burner
Rapid Burner
Surface burner grate
Control panel
Oven rack positions
Oven door window
Anti-tip bracket
RANGE LAYOUT
This illustration covers several different models. The range you have
purchased may have some or all of the items listed. The locations and
appearances of the features shown here may not match those of your model.

11
WHAT'S INCLUDED
Surface burner grates (3) Surface burners and caps (5)
Wok grate Oven racks (2)
BURNER LAYOUT
Burner cap
Burner head
Electrode
Flame failure safety device
(on older models)
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Surface Burner
Controls
Oven
Controls
Clock/Timer
Controls
+ Increase
Function
- Decrease
CONTROL PANEL
CLOCK & TIMER
SETTING THE CLOCK AND TIMER
IMPORTANT: Clock must be set in order for the timed oven functions to work.
Your model has a digital display clock with 3 control buttons.
NOTE: In the event of a power failure, all settings including the clock time set
will be lost. When the power is returned, clock must be set again.
TO SET THE TIME OF DAY
When the power is connected or after a power outage, the screen will display
12.00 and the indicator bar above "Set Clock" will blink.

13
TO SET THE TIMER
The digital countdown timer can be set up to 11 hours and 59 minutes
maximum.
- Decrease Function + Increase
1. If the clock was previously set, press the function button repeatedly until
the indicator bar blinks above "Set Clock".
2. Press or hold the + or - button to adjust the clock. The clock will be
confirmed automatically if you leave the correct time there for 5 seconds
without pressing any buttons, and the indicator bar will become solid.
You may also press the function button to confirm the clock manually
while the indicator bar is blinking.
1. Press the function button repeatedly until the indicator bar blinks above
"Timer Set".
2. Press or hold the + or – button to set the length of time, then press the
function button or wait for 5 seconds to confirm.
Once confirmed, the current time will be shown and the countdown will begin.
When the countdown is finished, press any button to stop the beeping.
To view and modify the countdown time remaining, press the function button
once to select "Timer Set" again and use the + or - button to adjust the
current timer as needed; To cancel the timer, follow the steps above to set the
length of time to 0.00.
NOTE: When adjusting the time, idling for 5 seconds without pressing any
buttons will automatically confirm the current time on the display.

14
TIMED COOKINGS
WARNING
Food Poisoning Hazard
Do not let food sit in oven more than one hour before or after cooking.
Doing so can result in food poisoning or sickness.
Foods that can easily spoil such as milk, eggs, fish, meat or poultry, should
be chilled in the refrigerator first. Even when chilled, they should not stand
in the oven for more than 1 hour before cooking begins, and should be
removed promptly when finished cooking.
NOTE: Only one of Cook Time and End Time can be used at a time.
IMPORTANT: Clock must be set in order for the timed oven functions to work.
TO SET THE COOK TIME
Press the function button until the bar flashes above "Cook Time". Then
use the + or – button to set the length of cooking time (maximum of 10 hours),
and press the function button or wait for 5 seconds to confirm.
- Decrease Function + Increase
•Set Cook Time only:
Cook for the set length of time from now, then shut off the oven
automatically.
•Set End Time only:
Shut off the oven automatically at the set time of day.

15
TO SET THE END TIME
Press the function button until the bar flashes above "End Time". Then use
the + or – button to set the shut off time of day, and press the function button
or wait for 5 seconds to confirm.
SETTING THE COOKING METHODS
Turn the oven Thermostat knob and Cooking-Mode knobs to set the
temperature and oven mode. The oven will turn on, and will automatically
shut off according to the time set. When the shut off time is reached, press
any button to stop the beeping and return the oven knobs to the OFF position.
Example:
Start/Continue baking at 350°F for 50 minutes and finish cooking at 6:00.
Thermostat (°F) Cooking Mode
1. Press the function button repeatedly until the indicator bar blink above
"Cook Time", then set the length of cooking time to 0.50 and confirm.
OR
Press the function button repeatedly until the indicator bar blink above
"End Time", then set the shut off time of day to 6.00 and confirm.
2. Turn/Keep the thermostat knob at 350°. Once the clock time is returned
on the display, the indicator bar above "Cook Time" or "End Time" will be
blinking, indicating a schedule is set.
3. At 6:00 when the cooking is finished, the oven will shut down
automatically. Press any button to stop the beeping, and turn the oven
knobs to the OFF position.

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COOKTOP USE
Read the instructions before installing or using this appliance.
IGNITION AND OPERATION OF THE BURNERS
To ignite a burner, push down on the burner knob and rotate it
counterclockwise until the knob indicator is aligned with the ignite icon.
Release the knob and adjust the flame intensity by further rotating the knob
counterclockwise from MAX (maximum) to MIN (minimum).
NOTE: For models with a flame failure safety device - Once the flame is lit,
hold the knob depressed for about 3-4 seconds until the device keeps the
burner automatically lit. If the burner fails to ignite, wait one minute for the
gas to dissipate before attempting to reignite.
To turn off the burner, rotate the knob clockwise until the indicator on the
knob is aligned with OFF.
POWER FAILURE
In case of prolonged power failure, the surface burners can be lit manually.
Hold a lit match near a burner and turn knob counterclockwise until the
indicator is aligned with MAX. After the burner is lit, turn knob to desired
setting.
In the case of unintentional flame extinguishing, the safety valve intervenes
by shutting off the gas to the burners.
The electric igniter must not be actuated for longer than 15 seconds. Should
the burner not light, or should the burner be unintentionally turned off,
immediately close the burner, and wait at least 1 minute before repeating.
Once ignited, adjust the flame as desired.
•This appliance shall be installed in accordance with the regulations in
force and only used in a well-ventilated space.
•The use of a gas-cooking appliance results in the production of heat and
moisture in the room in which it is installed. Ensure that the kitchen is well
ventilated: keep natural ventilation holes open or install a mechanical
ventilation device (mechanical extractor hood).
•Prolonged intensive use of the appliance may call for additional
ventilation, for example opening of a window, or more effective
ventilation, for example increasing the level of mechanical ventilation
where present.

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CONTAINER TABLE
Burner Min Saucepan Max Saucepan
Auxiliary 3.5" (9.0 cm) 6.3" (16 cm)
Semi-rapid 5.1" (13 cm) 7.1" (18 cm)
Rapid 5.9" (15 cm) 10.2" (26 cm)
Triple ring 8.3" (21 cm) 10.2" (26 cm)
BALANCED PAN
UNBALANCED
PAN
CONVEX
(ROUNDED)
CONCAVE
(HOLLOW)
FLAME TOO LARGE
FOR PAN SIZE
USE LIDS THAT
FIT PROPERLY
For lower gas consumption and a better result, use saucepans with a
diameter matching the diameter of the burner, to avoid the flame coming up
around the sides of the saucepan. See the Container Table. Use only flat-
bottomed pans.
As soon as liquid starts to boil, turn the flame down to a level sufficient to
maintain boiling.
COOKWARE
MATCH PAN DIAMETER TO FLAME SIZE
The flame should be the same size as the bottom of the pan or smaller. Do not
use small pans with high flame settings as the flames can lick up the sides of
the pan. Oversized pans that span two burners are placed front to rear, not
side to side.
USE BALANCED PANS
Pans must sit level on the cooktop grate without rocking. Center the pan over
the burner.
USE A LID THAT FITS PROPERLY
A well-fitting lid helps shorten the cooking time. Flat, heavy bottom pans
provide even heat and stability.

18
OVEN USE
WARNING
NEVER cover any slots, holes or passages in the oven bottom or cover an
entire rack with materials such as aluminum foil. Doing so blocks airflow
through the oven and may cause carbon monoxide poisoning. Aluminum
foil linings may also trap heat, causing a fire hazard.
Reset all controls to the OFF position after using a programmable timing
operation. No attempt should be made to operate the appliance during
power failure.
An air curtain or other overhead range hood, which operates by blowing a
downward airflow onto a range shall not be used in conjunction with a gas
range.
OVEN CONTROLS
The Thermostat knob and Cooking-mode knobs are used together to select
Oven Modes.
Thermostat (°F) Cooking Mode
THERMOSTAT KNOB
Push in on the Thermostat knob, and then turn the knob to any baking
temperature or broil to automatically ignite the bake burner or the broil
burner.