I
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S
MODELS MGR36 AND MGR36C
GAS DELI RANGES
T
R
U
C
T
I
O
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S
ML-103870
ML-103871
701 RIDGE AVENUE
TROY, OHIO 45374-0001
937-332-3000
www.hobartcorp.com
FORM 18202, Rev. B (July 2000)
IMPORTANT FOR YOUR SAFETY
THIS MANUAL HAS BEEN PREPARED FOR PERSONNEL QUALIFIED TO INSTALL GAS
EQUIPMENT, WHO SHOULD PERFORM THE INITIAL FIELD START-UP AND
ADJUSTMENTS OF THE EQUIPMENT COVERED BY THIS MANUAL.
POST IN A PROMINENT LOCATION THE INSTRUCTIONS TO BE FOLLOWED IN THE
EVENT THE SMELL OF GAS IS DETECTED. THIS INFORMATION CAN BE OBTAINED
FROM THE LOCAL GAS SUPPLIER.
IMPORTANT
IN THE EVENT A GAS ODOR IS DETECTED, SHUT
DOWN UNITS AT MAIN SHUTOFF VALVE AND
CONTACT THE LOCAL GAS COMPANY OR GAS
SUPPLIER FOR SERVICE.
FOR YOUR SAFETY
DO NOT STORE OR USE GASOLINE OR OTHER
FLAMMABLE VAPORS OR 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.
IN THE EVENT OF A POWER FAILURE, DO NOT
ATTEMPT TO OPERATE THIS DEVICE.
© HOBART CORPORATION, 1994
– 2 –
TABLE OF CONTENTS
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Installation Codes and Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Ranges Mounted on Casters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Bumper Bars (Convection Oven Ranges Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Backsplash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Leveling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Gas Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Gas Pressure Regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Testing the Gas Supply System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Flue Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Electrical Connections (Convection Oven Model Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Lighting and Shutting Down Pilots. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Preheating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Loading and Unloading Standard and Convection Ovens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Rack Arrangement - Standard Oven . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Rack Arrangement - Convection Oven . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Inserting and Removing Standard and Convection Oven Racks . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Cooking Chart for Convection Oven . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Lubrication. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Oven Door Gasket Replacement - Convection Oven Only . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Vent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Adjustments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
– 3 –
Installation, Operation and Care of
MODELS MGR36 & MGR36C GAS DELI RANGES
SAVE THESE INSTRUCTIONS FOR FUTURE USE
GENERAL
Your MGR36 or MGR36C Gas Deli Range is equipped with six open top burners. The MGR36 range has a
standard oven and is supplied with one oven rack. The MGR36C has a convection oven and is supplied with
three oven racks. An additional oven rack for either model may be ordered as optional equipment.
INSTALLATION
UNPACKING
Immediately after unpacking the range, check it for possible shipping damage. If this range is found to be
damaged, save the packaging material and contact the carrier within 15 days of delivery.
Unpack range carefully and place it in a work-accessible area as near to its final installed position as possible.
Remove all shipping wire and wood blocking.
Prior to installation, verify that the electrical service (convection ovens only) and type of gas supply (natural or
propane) agree with the specifications on the data plate, which is located on the inside of the lower kick panel.
If the supply and equipment requirements do not agree, do not proceed with the installation. Contact your local
Hobart service office.
LOCATION
The equipment area must be kept free and clear of combustible substances.
The range, when installed, must have a minimum clearance from combustible and non-combustible construction
of 6" at the sides and 6" at the rear.
The installation location must allow adequate clearances for servicing and proper operation. A minimum front
clearance of 40" is required.
The range must be installed so that the flow of combustion and ventilation air will not be obstructed. Adequate
clearance for air openings into the combustion chamber must be provided. Make sure there is an adequate
supply of air in the room to allow for combustion of gas at the burners.
– 4 –
INSTALLATION CODES AND STANDARDS
For proper installation procedures in the United States of America, refer to:
1. State and local codes.
2. National Fuel Gas Code ANSI-Z223.1 (latest edition). Copies may be obtained from The American Gas
Association, Inc., 1515 Wilson Blvd., Arlington, VA 22209.
3. National Electrical Code ANSI/NFPA-70 (latest edition). Copies may be obtained from The National Fire
Protection Association, Batterymarch Park, Quincy, MA 02269.
In Canada, refer to:
1. Local codes.
2. CAN/CGA-B149.1 Installation for Natural Gas Burning Appliances and Equipment (latest edition).
3. CAN/CGA-B149.2 Installation for Propane Gas Burning Appliances and Equipment (latest edition). Copies
may be obtained from The Canadian Gas Association, 178 Rexdale Blvd., Etobicoke, Ontario, Canada M9W
1R3.
4. Canadian Electrical Code Part 2, CSA Standard C22.1 (latest edition). Copies may be obtained from The
Canadian Standards Association, 178 Rexdale Blvd., Etobicoke, Ontario, Canada M9W 1R3.
ASSEMBLY
Ranges Mounted on Casters
When the range is mounted on casters, you must use a flexible connector (not supplied) that complies with the
Standard for Connectors of Movable Gas Appliances, ANSI-Z21.69 and Addenda Z21.69a (latest edition), and
a quick-disconnect device that complies with the Standard for Quick-Disconnect Devices for Use With Gas Fuel,
ANSI-Z21.41 (latest edition). In Canada: When the range is installed with casters, it must be installed with the
casters supplied, a connector complying with CAN/CGA-6.16 (latest edition), and a quick-disconnect device
complying with CAN 1-6.9 (latest edition).
Provide a restraining device for the gas line to limit movement of the range without depending on the connector
and/or any quick-disconnect device or its associated piping to limit movement of the range. Attach the restraining
device to the rear of the range (Fig. 1).
If it becomes necessary to disconnect the restraint, turn off the gas supply before disconnection. Reconnect the
restraint before turning the gas supply on and returning the range to its installation position.
CONNECT GAS LINE
STRAIN
RELIEF HERE
PL-51219
Fig. 1
– 5 –
Bumper Bars (Convection Oven Ranges Only)
CAUTION: Failure to install bumper bars may cause motor damage and may void the warranty.
Remove existing #10 screws. Position bumper bars (supplied) as shown. Replace #10 screws and secure
bumper bars (Fig. 2).
REAR VIEW OF RANGE
NOTES:
1. Bumper bars required for all
Convection Oven Ranges.
2. Restraining device required for
all ranges with casters.
3. Restraining device not supplied by
unit manufacturer.
RESTRAINING DEVICE
#10 SHEET METAL SCREW
BUMPER BAR
PL-50109
Fig. 2
Backsplash
The standard deli range is equipped with a 23" high backsplash and shelf.
1. Remove the backsplash components from the crating materials.
2. Check the backsplash component parts against the list below to ensure that all the required parts for the
backsplash installation have been obtained. (See Fig's. 3 & 4.) If any parts are missing, contact your local
Hobart service office immediately.
Backsplash Component Parts
Std. 23" high Backsplash (1) #10 Sheet Metal Screws (16)
Backsplash Channel (2)
1
/4-20 x 25/16" Long Machine Screws (4)
Heat Shield (1) Shelf Assembly (1)
– 6 –
Fig. 3 Fig. 4
3. Assemble the required components as shown in Fig's. 3 and 4.
4. Lift the assembly up, sliding the channels into the space provided at the rear of the range (this may require
2 people).
5. It may be necessary to pull the heat shield bottom out slightly in order to clear the oven flue box area. Be
sure the backsplash is resting evenly and the channel holes are lining up with the holes provided in the rightand left-hand body side (Fig's. 5 & 6).
Fig. 5
Fig. 6
– 7 –
Fig. 7
6. Install eight #10 sheet metal screws (4 to each channel leg) (Fig. 7).
7. From the front, install four 1/4-20 x 25/16" long machine screws and secure bolts with locknuts. Do not tighten
the screws all the way down. Leave about 1/4" of play in each screw (Fig. 8).
8. Lift the shelf up and slide the shelf into position over the screw heads (Fig. 9).
9. Tighten the four screws to secure the shelf.
Fig. 8 Fig. 9
– 8 –
LEVELING
Check the leveling of the range. Place a carpenter's level inside the oven cavity across the oven rack(s). Level
front-to-back and side-to-side.
To adjust the leveling, tilt the range to one side and, using channel locks, unscrew the adjustable leg insert as
required. Repeat this procedure as necessary for each leg.
Casters for this range are of the non-adjustable type. Therefore, the floor must be level. If floor surface is not
level, the range will experience cooking problems.
GAS CONNECTIONS
CAUTION: All gas supply connections and any pipe joint compound used must be resistant to the action
of propane gases.
Each range is factory-equipped for the type gas specified on the data plate. The installation gas connection is
a 3/4" 14 FPT ANSI schedule #40 standard pipe.
Connect gas supply. Make sure the pipes are clean and free of obstructions.
Codes require that a gas shutoff valve be installed in the gas line ahead of the range.
Standard ranges are equipped with fixed burner orifices which coincide with installation elevation.
GAS PRESSURE REGULATOR
Before installing, ensure that regulator supplied agrees with the range data plate gas supply.
The gas pressure regulator is NOT factory installed. The regulator for this gas type is sealed within a plastic bag
attached to the oven rack inside the oven cavity. This regulator must be field installed by a qualified installer.
Natural gas regulators are preset for 3.7" W.C. (Water Column); propane gas regulators for 10.0" W.C.
The arrow on the regulator shows the direction of the gas flow (Fig. 10). The pressure regulator must be mounted
horizontally to ensure proper preset outlet pressure. If the regulator is installed in any other position, the outlet
pressure must be reset for proper operation.
1. Locate 3/4" gas connection pipe extending from rear of range.
2. Cover pipe threads with pipe joint compound.
3. Screw regulator hand-tight onto pipe with regulator arrow pointing towards range body back (Fig. 10).
4. Using pipe wrench, tighten regulator securely in an upright position (Fig. 10).
5. From this point on, continue with normal gas line connection procedures.
A leak limiter is supplied with every regulator to allow excess gas pressure to escape. Do not obstruct leak limiter
on gas pressure regulator as obstruction may cause regulator to malfunction.
– 9 –
Fig. 10
WARNING: PRIOR TO LIGHTING, CHECK ALL JOINTS IN THE GAS SUPPLY LINE FOR LEAKS. USE SOAP
AND WATER SOLUTION. DO NOT USE AN OPEN FLAME.
After piping has been checked for leaks, all piping receiving gas should be fully purged to remove air.
TESTING THE GAS SUPPLY SYSTEM
When gas supply pressure exceeds 1/2 psig (3.45 kPa), the range and its individual shutoff valve must be
disconnected from the gas supply piping system.
When gas supply pressure is 1/2 psig (3.45 kPa) or less, the range should be isolated from the gas supply system
by closing its individual manual shutoff valve until the range is ready for start-up.
FLUE CONNECTIONS
DO NOT obstruct the flow of flue gases from the flue located on the rear of the range. It is recommended that
the flue gases be ventilated to the outside of the building through a ventilation system installed by qualified
personnel.
From the termination of the flue to the filters of the hood venting system, a minimum clearance of 18" must be
maintained.
Information on the construction and installation of ventilating hoods may be obtained from the standard for
"Vapor Removal from Cooking Equipment," NFPA No. 96 (latest edition), available from the National Fire
Protection Association, Batterymarch Park, Quincy, MA 02269.
– 10 –
ELECTRICAL CONNECTIONS (CONVECTION OVEN MODEL ONLY)
WARNING: ELECTRICAL AND GROUNDING CONNECTIONS MUST COMPLY WITH THE APPLICABLE
PORTIONS OF THE NATIONAL ELECTRICAL CODE AND/OR OTHER LOCAL ELECTRICAL CODES.
WARNING: DISCONNECT ELECTRICAL POWER SUPPLY AND PLACE A TAG AT THE DISCONNECT
SWITCH TO INDICATE THAT YOU ARE WORKING ON THE CIRCUIT.
WARNING: APPLIANCES EQUIPPED WITH A FLEXIBLE ELECTRIC SUPPLY CORD ARE PROVIDED WITH
A THREE-PRONG GROUNDING PLUG. IT IS IMPERATIVE THAT THIS PLUG BE CONNECTED INTO A
PROPERLY GROUNDED THREE-PRONG RECEPTACLE. IF THE RECEPTACLE IS NOT THE PROPER
GROUNDING TYPE, CONTACT AN ELECTRICIAN. DO NOT REMOVE THE GROUNDING PRONG FROM
THIS PLUG.
This range is designed for 120 volt power supply. All ranges are supplied with a flexible electric supply cord and
plug and must be plugged into the proper receptacle before turning on gas.
The wiring diagram is located on the kick panel.
Do not connect the range to electrical supply until after gas connections have been made.
– 11 –
OPERATION
WARNING: THE RANGE AND ITS PARTS ARE HOT. BE VERY CAREFUL WHEN OPERATING, CLEANING
OR SERVICING THE RANGE.
CONTROLS
Thermostat Dial - Standard Oven — Allows operator to regulate the oven temperature from low to 500°F.
Thermostat Dial - Convection Oven — Snap-acting type control which allows operator to regulate the oven
temperature from 150°F to 500°F.
Open Top Burner Knob - — Regulates gas flow to top burners. To increase heat, turn knob
Standard and Convection Ovens counterclockwise; to decrease heat, turn knob clockwise.
Power Switch - Convection Oven — ON-OFF switch controls power supply to convection oven control.
Heating Light - Convection Oven — When lit, indicates that the oven thermostat is calling for heat to the
oven.
LIGHTING AND SHUTTING DOWN PILOTS
Open Top Burners
1. Turn main gas supply ON.
2. Wait 30 seconds. Use a taper and light the open top pilot (Fig. 11).
Fig. 11
– 12 –
3. If pilot fails to light, turn main gas supply OFF. Wait 5 minutes and repeat the above procedures.
4. After pilot is lit, turn one open top burner valve ON to remove air from the gas line. Turn burner OFF when
gas begins to flow.
Nightly Shutdown: Turn burner valve OFF; pilot will remain lit.
Complete Shutdown
1. Turn burner valve OFF; pilot will remain lit.
2. Turn main gas supply OFF.
Standard Oven
Light open top burner pilots before lighting oven pilot.
1. Open kick panel (Fig. 12) and lift up the pilot lighting hole cover.
Fig. 12 Fig. 13
2. Depress the reset button located behind the kick panel (Fig. 13) and light pilot with a lit taper. Continue to
hold reset button in for 1 minute. If pilot fails to light, turn main gas supply OFF and wait 5 minutes before
repeating Step 2.
3. After pilot is lit, turn the thermostat to the desired setting.
Nightly Shutdown: Turn oven thermostat OFF.
Complete Shutdown
1. Turn oven thermostat OFF.
2. Turn main gas supply OFF.
– 13 –
Convection Oven
Light open top burner pilots before lighting oven pilot.
1. Open kick panel (see Fig. 12) and lift up the pilot lighting hole cover.
2. Turn red gas valve ON (located behind the kick panel), purging the gas line of all air (Fig. 14). Turn gas valve
and power switch OFF. Close oven door. Wait 5 minutes.
Fig. 14 Fig. 15
3. Light oven pilot by depressing the reset button (Fig. 15) and using a taper to light the pilot. Hold reset button
in for 30 seconds or until pilot remains lit. Turn gas valve ON.
4. If pilot fails to light, turn main gas supply OFF. Wait 5 minutes and repeat Steps 2 and 3.
5. After pilot is lit, push the power switch ON and turn the thermostat to the desired setting.
Nightly Shutdown: Turn the power switch OFF and the thermostat to 0 degrees.
Complete Shutdown
1. Turn thermostat to 0 degrees.
2. Push power switch OFF.
3. Turn red gas valve OFF (behind kick panel).
4. Turn main gas supply OFF.
5. Disconnect electrical supply cord.
Convection Oven With Spark Ignition (Fig. 16)
1. Move rocker switch to ON position.
2. Once oven pilot is established, the oven READY light will illuminate.
3. Set oven thermostat to desired temperature. Thermostat light will illuminate. This indicates that the
thermostat is calling for heat.
The convection oven thermostat must be on and calling for heat for oven pilot to light.
Nightly Shutdown: Push rocker switch and turn all knobs to the OFF position.
Complete Shutdown
1. Push rocker switch and turn all knobs to the OFF position.
2. Turn main gas supply OFF.
– 14 –
THERMOSTAT
KNOB
TOP SECTION
BURNER KNOB
THERMOSTAT
LIGHT
ROCKER
SWITCH
OVEN "ON"
LIGHT
OVEN READY
LIGHT
PL-53530
Fig. 16
PREHEATING
Standard Oven
Turn thermostat to the desired cooking temperature and preheat oven for 25 minutes. To save on gas
consumption, do not operate oven at maximum heat when it is not necessary. Turn thermostat down to 250°F
or OFF when oven is not in use or during idle cooking periods.
Convection Oven
With power switch in the ON position, turn oven thermostat knob to the proper cooking temperature and allow
oven to preheat for 15 minutes. To save on gas and electrical consumption, turn thermostat to one-half the
cooking temperature or completely OFF during idle cooking periods.
Open Top Burners
Open top burners ignite quickly and do not require any preheating time. When food comes to a rolling boil, cut
back to slower boil to conserve energy, yet continue boiling. Turn burners ON only when in use.
LOADING AND UNLOADING STANDARD AND CONVECTION OVENS
Open the door and load as quickly as practical to conserve heat. Take care to avoid spilling liquids while loading.
Close the door and set cooking cycle time.
Provide adequate space for product unloading. Rapid unloading will conserve heat and reduce preheating for
the next load.
RACK ARRANGEMENT - STANDARD OVEN
Capacity
The standard oven has two rack positions and is supplied with one oven rack. For best results when baking cakes
and pastries, it is recommended that only a single rack position be used. However, proper rack usage and
positioning is really determined by the individual cooking needs of the operator. If you are cooking a large roast,
the entire oven cavity may be used. Remove the oven rack completely from the oven cavity and place the
roasting pan directly on the oven bottom.
– 15 –
RACK ARRANGEMENT - CONVECTION OVEN
Capacity
The convection oven is supplied with three oven racks. The oven cavity provides a five-position rack support
for maximum cooking flexibility. The following arrangements are the most commonly recommended. The rack
positions are numerically sequenced starting at the bottom.
Arrangement #1
Three racks in Positions 1, 3 and 5 for oven broiling, baking cookies, or reconstitution of frozen meals. This is
also the recommended position arrangement for general baking in sheet pans with products not over 21/2" high.
Arrangement #2
Two racks in Positions 2 and 4 for general baking in sheet pans, muffin pans, pie or cake tins and pudding pans
31/2" high with products not over 4" high. This arrangement also may be used for casseroles or meat dishes in
#200 series food service pans 12" x 20" x 21/2".
Arrangement #3
Two racks in Positions 1 and 4 for baking breads or cakes in loaf or tube pans. This arrangement also may be
used for casseroles, meat dishes or roasting in pans up to 41/2" deep with products up to 5" high.
When mix loading of food products is a regular kitchen practice, some operators have developed other rack
position arrangements to suit their particular needs.
INSERTING AND REMOVING STANDARD AND CONVECTION OVEN RACKS
The oven rack has a stop to keep the rack from being pulled all the way out when unloading product. To install
rack, place rack along side of top of side liner runners and slide rack completely to the rear of the oven
compartment until rack drops into place (Fig's. 17 & 18).
Fig. 17 Fig. 18
To remove rack, raise rear of oven rack stop above the runner and pull rack forward (Fig. 19).
– 16 –
Fig. 19
COOKING CHART FOR CONVECTION OVEN
This cooking chart is for convection ovens only. For standard ovens, use your normal recipe times and
temperatures.
Recommended temperatures and times in this chart are intended as a guide only. Adjustments must be made
to compensate for elevation, variations in recipes, ingredients, preparation and personal preference on product
appearance.
Meat roasting is most satisfactory at temperatures of 225°F to 325°F for beef, lamb, poultry and ham, and 325°F
for fresh pork as recommended by USDA and American Meat Institute.
A pan, approximately 12" x 20" x 1", full of water may be placed in the oven bottom to supply humidity; this will
reduce shrinkage. Add water if necessary during roasting.
Roasting pans should be no deeper than necessary to hold drippings, usually 2" to 21/2".
Cooking time and shrinkage may vary with roasting temperature, cut, grade of meat and degree of doneness.
Smaller cuts will generally show greater time savings than larger cuts at a given temperature.
– 17 –
ROASTING TEMPERATURES AND TIMES
PRODUCT TEMPERATURE APPROXIMATE TIME
Standing Rib Roast 250° F 3-4 Hrs. - Rare
Oven Ready - 15 lbs. 4-41/2 Hrs. - Med.
Rolled Rib Roast - 20-22 lbs. 275° F 4 Hrs. - Med.
Veal Roast - 15 lbs. 300° F 3 Hrs. - Med. Well
Turkey - 15-20 lbs. 300° F 3 Hrs.
Meat Loaf - 8-10 lbs. 350° F 45 to 60 Min.
RECOMMENDED TEMPERATURES AND TIMES FOR BAKING
PRODUCT TEMPERATURE APPROXIMATE TIME (MIN.)
Cakes
Sheet Cakes - 18 x 26 x 1" pan 300 to 325° F 18 to 25
Scaled 41/2 to 6 lbs.per pan 325 to 360° F 20 to 23
Scaled 6 to 71/2 lbs.per pan 335 to 350° F 22 to 25
Sheet Cakes - 18 x 26 x 2" pan
Equals 2-12 x 18 x 2" pans 300 to 325° F 25 to 35
Scaled 10-12 lbs. per
18 x 26 x 2" pan or
5-6 lbs. per 12 x 18 x 2" pan
Angel or Sponge Cakes
Sheet pans 18 x 26 x 1"
Scaled 5-6 lbs. per pan 300 to 325° F 15 to 20
Loaf or Tube Pans 315 to 340° F 20 to 30
Cup Cakes 350 to 400° F 6 to 12
Frozen Fruit Pies 350 to 375° F 30 to 45
Pumpkin or Custard Pies 300 to 350° F 30 to 45
Cobblers
12 x 18 x 2" or 12 x 20 x 21/2" pans 350 to 400° F 30 to 45
Meringue Pies 350 to 425° F 6 to 10
Fruit Turnovers
Sheet pans 350 to 375° F 15 to 25
NOTE: Cobblers, fruit, custard and pumpkin pies should be placed on sheet pans for baking.
– 18 –
RECOMMENDED TEMPERATURES AND TIMES FOR BAKING, Cont'd.
PRODUCT TEMPERATURE APPROXIMATE TIME (MIN.)
Cookies
Rolled or Pressed 350 to 400° F 6 to 12
Drop 350 to 400° F 6 to 15
Brownies 350° F 12 to 20
Yeast Breads NOTE: Yeast breads should be fully proofed for best results.
Rolls - 1 oz. 350 to 400° F 5 to 10
11/2 to 21/2 oz. 350 to 400° F 8 to 15
Loaf Bread - l lb. 325 to 375° F 20 to 40
Sweet Rolls and Pastries 325 to 375° F 5 to 15
Biscuits - Rolled 1/2" thick 350 to 400° F 5 to 15
Muffins 325 to 375° F 6 to 18
Corn Bread
18 x 26 x 1" pan, 5-7 lbs. per pan 335 to 400° F 10 to 20
18 x 26 x 2" pan, 8-20 lbs. per pan 335 to 400° F 15 to 25
Corn Muffins 335 to 385° F 10 to 20
OVEN BROILING OR FRYING
PRODUCT TEMPERATURE APPROXIMATE TIME (MIN.)
Hamburger Patties
8 per lb. - Med. well done 400 to 450° F 5 to 6
6 per lb. 400 to 450° F 7 to 10
4 per lb. 375 to 385° F 8 to 12
Fish Sticks & Portions
Frozen bread. - 1 oz. 350 to 400° F 6 to 10
21/2 to 3 oz. 350 to 375° F 8 to 15
Chicken Pieces
Broiled or Oven Fried
2 to 21/2 lbs. 375 to 425° F 8 to 15
21/2 to 3 lbs. 350 to 400° F 15 to 25
Lobsters
1 to 11/2 lbs. 400 to 450° F 8 to 14
Lobster Tails
Frozen, 1/2 to 1 lb. 350 to 400° F 10 to 15
– 19 –
REHEATING PREPARED FOODS
PRODUCT TEMPERATURE APPROXIMATE TIME (MIN.)
Frozen French Fries 400 to 450° F 6 to 8
Frozen TV Dinners 350 to 400° F 10 to 12
Frozen Entrees - 1" thick 300 to 350° F 10 to 20
Frozen Meals
8 oz. foil package 350 to 400° F 20 to 30
CASSEROLES
PRODUCT TEMPERATURE APPROXIMATE TIME (MIN.)
Food Service Pans
2" to 3" deep 325 to 375° F 15 to 25
3" to 4" deep 325 to 375° F 20 to 35
Ramekins or Foil Pans
Up to 11/2" Deep 350 to 400° F 5 to 6
Frozen 350 to 400° F 10 to 15
MISCELLANEOUS PRODUCTS
PRODUCT TEMPERATURE APPROXIMATE TIME (MIN.)
Baked Potatoes
120 count per 50 lbs. 400 to 450° F 20 to 25
100 count per 50 lbs. 400 to 450° F 25 to 40
80 count per 50 lbs. 400 to 450° F 30 to 50
Pizzas
Frozen or with prebaked crust 425 to 475° F. 5 to 10
Grilled Cheese Sandwiches 400 to 425° F. 8 to 10
SPECIAL BAKING PROCEDURES
YEAST BREADS: Cooking starts immediately in the convection oven. Yeast breads do not usually rise as much
in the convection oven as in a conventional oven. Therefore, it is necessary to allow 21/2 to 3 times longer for
the dough to reach its proofing capacities.
PIES: When baking pies in your convection oven, 3 or 4 pies should be put on an 18" x 26" sheet or bun pan.
This procedure helps the bottom crust to bake, makes handling easier and reduces the possibility of boil-over
spoiling the appearance of the pies on the lower racks.
– 20 –
CLEANING
WARNING: (CONVECTION OVEN MODEL ONLY) DISCONNECT ELECTRICAL POWER SUPPLY BEFORE
CLEANING.
Do not use Dawn dish detergent to clean the exterior or interior components of the range.
DO NOT use scouring powder. It is extremely difficult to remove completely, and accumulations can build up
that will damage the oven.
Painted surfaces may be cleaned using a soft cloth and mild detergent solution.
RANGES
Daily:
Remove racks and clean in a sink.
Clean oven and oven door daily, especially if fruit pies or tomato sauces were baked, meats roasted, and if there
have been spillovers.
After processing some foods at low temperatures, odors may linger in the oven. These odors may be cleared
by setting the thermostat at 500°F and allowing the oven to operate empty for 30 to 45 minutes.
Clean cast iron open top grates with a mild soap and water solution. Rinse thoroughly and dry with a clean, water-
absorbent towel. Immediately after drying (with grates still removed from the range top), season grates lightly
with liquid vegetable or Pam spray-type cooking oil.
After seasoning, replace grates. Turn all open top sections ON LOW and allow them to burn for at least 15
minutes before using pots or pans on the range top.
Season the open top grates after each cleaning. Failure to season grates will cause grates to rust.
Weekly:
Boil burners in a solution of washing soda. Rinse and dry parts thoroughly. Flash rusting may occur. This is
a normal condition and will not affect the performance or the product prepared.
When reinstalling the burner back onto the unit, be sure the burner heads are properly connected. Do not light
the pilot or turn burner valve “ON” with the burner head removed.
– 21 –
CONVECTION OVENS ONLY
Keep the convection tube opening (Fig. 20) clear from blockage. If usage of aluminum foil is a common practice
during the operation of this oven, be sure to periodically check the convection tube for foil particles.
CONVECTION TUBE OPENING
PL-40672-1
Fig. 20
Clean the convection tube with standard oven cleaner at least once a week. Be sure to thoroughly clean all
cleansing solution off the tube before using oven again. It is also recommended that the oven be run at 400°F
for 20 minutes to burn off any cleaning solution that was not thoroughly rinsed from the tube.
Oven Door Gasket
To clean the oven door gasket, use a soft cloth or sponge and a mild cleanser. DO NOT USE STRONG OVEN
CLEANERS SUCH AS EASY OFF® OR MR. MUSCLE®. Cleaners of this nature will destroy the gasket material.
– 22 –
MAINTENANCE
WARNING: THE RANGE AND ITS PARTS ARE HOT. BE VERY CAREFUL WHEN OPERATING, CLEANING
OR SERVICING THE RANGE.
WARNING: (CONVECTION OVENS ONLY) DISCONNECT ELECTRICAL POWER SUPPLY BEFORE
SERVICING THE RANGE.
LUBRICATION
The MGR36C convection oven motor is permanently lubricated and will not require any additional maintenance.
OVEN DOOR GASKET REPLACEMENT - CONVECTION OVEN ONLY
To remove the old gasket, gently pry the arrow-like gasket pins from the oven front frame using a standard
screwdriver.
Install new gasket by aligning and inserting the arrow-like pins into the holes provided in the front frame (Fig's.
21 & 22).
Fig. 21 Fig. 22
VENT
The vent, when cool, should be checked for obstructions every six months.
ADJUSTMENTS
All adjustment procedures associated with pilot lighting must be performed by a qualified Hobart installation or
service person.
Contact your local Hobart service office for any other maintenance required.
– 23 –
OVEN
TROUBLESHOOTING
STANDARD AND CONVECTION OVEN DELI RANGE
PROBLEM
Too much bottom heat.
Too low temperature.
Side burning.
Too much top heat.
Uneven bake side-to-side.
Uneven bake front-to-rear.
Dried out products.
Pilot outage.
POSSIBLE CAUSES
1. Insufficient ventilation.
2. Possible flue problem.
Improper thermostat bypass setting.
Thermostat out of calibration.
Fluctuating gas pressure.
1. Range not level side-to-side.
2. Oven burner, bottom or baffles improperly installed.
3. Warped pans.
1. Overactive flue.
2. Range not level front-to-back; check casters and legs.
3. Door not closing properly.
1. Too low temperature (overcooking).
2. Too long baking time.
3. Thermostat calibration.
1. Pilot flame too low.
2. Restriction in pilot orifice.
3. Malfunctioning shutoff valve.
4. Possible flue problem.
5. Low pressure.
6. Improper gas line sizing.
7. Burner box cover not properly installed.
8. Oven cavity requires resealing.
TOP BURNER OPERATION
PROBLEM
Improper burner combustion.
Excessive valve handle temperatures.
Sticking top burner valves.
Poor ignition.
FORM 18202, Rev. B (July 2000) PRINTED IN U.S.A.
1. Improper ventilation.
2. Poor door fit.
3. Oven door left open.
4. Improper use of excessively large pans or pots.
1. Insufficient gas input.
2. Poor air-gas adjustment.
3. Restriction in pilot orifice.
4. Restriction in main burner ignition port.
– 24 –
POSSIBLE CAUSES
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