Southbend Range MRA-36 Operators Manual
IMPORTANT
FOR FUTURE REFERENCE
Please complete this information and retain this manual for
the life of the equipment.
MODEL #
SERIAL #
DATE PURCHASED
OWNER'S MANUAL
INSTALLATION
USER'S GUIDE
SERVICE
PARTS
COMPACT
INFRA-RED BROILER
MODELS: MRA-32C, MRA-32, MRA-32W
MRA-36, MRA-60
These instructions should be read thoroughly before attempting installation. Set up,
installation and Performance Check should be performed by a qualified service
technician. The Manufacturer, Southbend (1100 Old Honeycutt Rd., Fuquay-Varina,
North Carolina 27526), informs you that unless the installation instructions for the
above described Southbend product are followed and performed by a qualified
service technician, (a person experienced in and knowledgeable concerning the
installation of commercial gas and/or electrical cooking equipment) then the terms and
conditions of the Manufacturer's Limited Warranty will be rendered void and no
warranty of any kind shall apply.
If the equipment has been changed, altered, modified or repaired by other than a
qualified service technician during or after the 12-month limited warranty period, then
the manufacturer shall not be liable for any incidental or consequential damages to
any person or to any property which may result from the use of the equipment
thereafter. Some States do not allow the exclusion or limitation of incidental or
consequential damages, so the above limitation or exclusion thereto may not apply to
you.
In the event you have any question concerning the installation, use, care, or service of
the product, write Customer Service Department, Southbend, 1100 Old Honeycutt
Rd., Fuquay-Varina, North Carolina 27526.
COMPACT INFRA-RED
BROILER (Manual Section BR)
Congratulations! You have just purchased one of the fmest pieces of heavy-duty, commercial cooking
FOR YOUR SAFETY
equipment on the market today.
You will find that your new equipment, like all Southbend equipment, has been designed and manufactured to
some of the toughest standards in the industry — those of Southbend Corporation. Each piece of Southbend
equipment has been carefully engineered and designs have been verified through laboratory tests and field
installations in some of the more strenuous commercial cooking applications. With proper care and field
maintenance, you will experience years of reliable, trouble-free operation from your Southbend equipment. To get
the best results, it's important that you read this manual carefully.
TABLE OF CONTENTS:
SECTION ONE - INSTALLATION
Specifications ........................................................... l
Installation ...........................................…................ 2
SECTION TWO - USER'S GUIDE
Warranty...............................................…......……... l
Operation .................................................…......…... 2
Maintenance ............................................................. 3
SECTION THREE - SERVICE
Adjustments .........................................………......... l
Service............................................................……... 2
Trouble Shooting ...................................................... 3
SECTION FOUR - PARTS
Parts List .....................................................……....…. 1
Southbend Infra-Red Broilers are unique in design. They incorporate our exclusive Schwank ceramic tile burners, which
generate infra-red rays that provide better quality products in about one-half the usual broiling time, with less gas input than
ordinary broilers. Very little energy is wasted in heating secondary surfaces, as is necessary in conventional-type broilers.
Since the surface of these tiles become red hot in less than one-half minute, the unit is ready to start broiling with a very short
preheat time, thereby saving time, labor and energy.
These glowing surfaces emit intense infra-red rays, which are transmitted directly onto the product, thereby yielding better
tasting broiled food in less time.
Use of 100% clean primary air, which is constantly conveyed to these burners, insures efficient combustion and maintains full
production capacity and maximum recovery, even in the most severe conditions of grease vapors and smoke atmospheres,
which are created during any broiling process.
The Southbend Infra-Red Broilers provide such speed and recovery that broiling techniques may require some modification in
order to take full advantage of its productive capabilities.
CAUTION: POST IN PROMINENT LOCATION INSTRUCTIONS TO BE FOLLOWED IN THE EVENT
THE SMELL OF GAS IS DETECTED. THIS INFORMATION SHALL BE OBTAINED FROM
LOCAL GAS SUPPLIER.
NOT INTENDED FOR HOUSEHOLD USE. FOR COMMERCIAL USE ONLY.
Retain this manual for future reference.
DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE
VAPORS AND LIQUIDS IN THE VICINITY OF THIS OR ANY OTHER
APPLIANCE.
KEEP AREA AROUND APPLIANCES FREE AND CLEAR FROM
COMBUSTIBLES.
IN THE EVENT A GAS ODOR IS DETECTED, SHUT DOWN EQUIP
MENT AT THE MAIN SHUTOFF VALVE AND CONTACT THE LOCAL
GAS COMPANY OR GAS SUPPLIER FOR SERVICE.
1100 Old Honeycutt
Road Fuquay-Varina.
NC 27526 (919)5529161 FAX (919) 5529798 (800)348-2558
COMPACT INFRA-RED BROILERS
USER'S GUIDE
LIMITED WARRANTY
Southbend, a Middleby Co., warrants that the Southbend equipment, as originally supplied to the original purchasers, is free from defects in materials and workmanship. Should any part thereof become defective as a result
of normal use within the period and limits defined below, then at the option of Southbend such parts will be
repaired or replaced by Southbend or its Authorized Service Agency. This warranty is subject to the following
conditions:
If upon inspection by Southbend or its Authorized Service Agency it is determined that this equipment has not
been used in an appropriate manner, has been modified, has not been properly maintained, or has been subject
to misuse or misapplication, neglect, abuse, accident, damage during transit or delivery, fire, flood, riot or Act of
God, then this warranty shall be void.
Specifically excluded under this warranty are claims relating to installation; examples are improper utility connections and improper utilities supply. Claims relating to normal care and maintenance are also excluded; examples
are calibration of controls, and adjustments to pilots and burners.
Equipment failure caused by inadequate water quality is not covered under warranty.
This equipment is intended for commercial use only. Warranty is void if equipment is installed in other than
commercial application.
Repairs under this warranty are to be performed only by a Southbend Authorized Service Agency.
THIS WARRANTY MUST BE SHOWN TO AN AUTHORIZED SERVICE AGENCY WHEN REQUESTING INWARRANTY SERVICE WORK. THE AUTHORIZED SERVICE AGENCY MAY AT HIS OPTION REQUIRE
PROOF OF DATE OF INSTALLATION.
This warranty does not cover services performed at overtime or premium labor rates nor does Southbend assume
any liability for extended delays in replacing or repairing any items in the equipment beyond the control of
Southbend. "Southbend, a Middleby Co., shall not be liable for consequential or special damages of any nature
that may arise in connection with such product or part."
Should service be required at times which normally involve overtime or premium labor rates, the owner shall be
charged for the difference between normal service rates and such premium rates.
In all circumstances, a maximum of one hundred miles shall be allowable for travel.
The actual warranty time periods are as follows:
For a product shipped into the 48 Continental United States and Hawaii, twelve months labor, twelve months
parts effective from the date of installation (when installed in place and utilities connected). There will be no labor
coverage for equipment located on any island not connected by roadway to mainland.
On all shipments outside of the 48 Continental United States and Hawaii, our warranty will be no labor but twelve
months on parts from the shipping date of the equipment from the manufacturer.
Our warranty on all replacement parts which are replaced in the field by our Authorized Service Agencies will be
limited to three months on labor, six months on materials (parts) effective from the date of installation. See
LIMITED WARRANTY - REPLACEMENT PARTS for conditions and limitations.
If the equipment has been changed, altered, modified or repaired by other than a qualified service technician
during or after the 12-month limited warranty period, then the manufacturer shall not be liable for any damages to
any person or to any property which may result from the use of the equipment thereafter. Some States do not
allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion
thereto may not apply to you.
"THE FOREGOING WARRANTY IS IN LIEU OF ANY AND ALL OTHER WARRANTIES EXPRESSED OR
IMPLIED INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS, AND CONSTITUTES
THE ENTIRE LIABILITY OF SOUTHBEND, A MIDDLEBY CO., IN NO EVENT DOES THE LIMITED WARRANTY
EXTEND BEYOND THE DURATION OF 12 MONTHS FROM THE EFFECTIVE DATE OF SAID WARRANTY."
HEAVY DUTY RESTAURANT RANGES
SECTION TWO — USER'S GUIDE
PAGE 1
OPERATION
WARNING:
FOR AN APPLIANCE EQUIPPED WITH CASTERS, THE INSTALLATION SHALL BE MADE
WITH A CONNECTOR THAT COMPLIES WITH THE STANDARD FOR CONNECTORS FOR
MOVABLE GAS APPLIANCES. ANSI Z21.69-1987, AND A QUICK-DISCONNECT DEVICE THAT
COMPLIES WITH THE STANDARD FOR QUICK-DISCONNECT DEVICES FOR USE WITH GAS
FUEL, ANSI Z21.41-1978, AND ADDENDA, Z21.41a.l981 AND Z21.41b.l983. ADEQUATE MEANS
MUST BE PROVIDED TO LIMIT THE MOVEMENT OF THE APPLIANCE WITHOUT
DEPENDING ON THE CONNECTOR AND THE QUICK-DISCONNECT DEVICE OR ITS
ASSOCIATED PIPING TO LIMIT THE APPLIANCE MOVEMENT.
WARNING: IF DISCONNECTION OF THIS RESTRAINT IS NECESSARY TO MOVE THE
APPLIANCE FOR CLEANING, ETC., RECONNECT IT WHEN THE APPLIANCE IS MOVED TO
ITS ORIGINALLY INSTALLED POSITION.
OPERATION:
1. Check that the pilots are ignited.
2. Turn burner valve to "HI." Burner will ignite from the pilot. If burner fails to ignite, turn burner to OFF,
check pilots.
CAUTION: THESE ARE NOT SAFETY PILOTS AND WHEN OUT. THEY DO NOT INTERRUPT THE
FLOW OF GAS TO THE BURNER. CONSEQUENTLY, IT IS THE RESPONSIBILITY OF THE
OPERATOR TO CHECK THE IGNITION OF THE BURNERS IMMEDIATELY AFTER THE
BURNER VALVE HAS BEEN TURNED ON. SHOULD IGNITION FAIL AFTER 5 SECONDS,
TURN VALVE OFF AND WAIT 5 MINUTES BEFORE TRYING AGAIN.
The pilots should burn continuously unless the unit is to be completely shut down. When extinguished, the
pilot gas supply is NOT INTERRUPTED automatically. For complete shutdown, the installer-supplied
manual service valve on the inlet gas supply line should be turned to OFF.
3. When the burner ignites, a blue haze-type flame will cover the surface of the ceramics for 60 seconds. This
haze will gradually disappear and within two minutes the ceramics will glow red. The flame on the surface
of the ceramics should be barely visible, with little or no blue haze.
4. LOW SETTING:
After the burner has operated on HIGH for several minutes, turn the valve counterclockwise as far as
possible, to the LO setting.
At this low setting the surface of the ceramics should become a very dull red, with a blue haze. The burner
should not "flutter" or "pop" at this setting. If such condition does exist, the setting is too low and should be
increased. Regulation of this low setting is by a set screw inside the hollow stem of the valve. Turn IN or
clockwise to reduce and OUT or counterclockwise to increase.
BURNER CONTROL:
There are two definite positions on the burner valve, one at HI and the other at LO. Between these settings, a
variety of burner rates can be obtained.
RACK POSITION:
Models with an adjustable rack handle lever arm (denoted by letter A) incorporate five (5) rack positions. These
are adjustable by moving the lever arm to the right and then up or down. Models without letter A incorporate three
(3) rack positions and are adjustable by bringing the rack forward, removing and then placing back in the desired
position.
PRODUCTS:
This is intended as a guide only. Temperature of meat, size of portion, load in broiler, degree of done-ness, or
other variables will effect broiling results to some extent.
210 — 1/4 pound, 4%" diameter hamburgers to medium
doneness ............................ in only one hour
10 — 8-ounce, 1 "-thick top butt steaks to medium
rare ............................. in only five minutes
4 — No. 7 Mexican food platters — cheese bubbling
hot ............................ in only 20-25 seconds
It is important that the rack drip pan be used at all times. Without it in place, excessive air is pulled past the
burners, reducing temperature and cooking efficiency.
COMPACT INFRA-RED BROILERS
SECTION TWO — USER'S GUIDE
PAGE 2
Litho in U.S.A.
Rev. 7-91
MAINTENANCE
WARNING:
ADJUSTMENTS AND SERVICE WORK MAY BE PERFORMED ONLY BY A QUALIFIED
TECHNICIAN WHO IS EXPERIENCED IN AND KNOWLEDGEABLE WITH THE OPERATION
OF COMMERCIAL GAS COOKING EQUIPMENT. HOWEVER, TO ASSURE YOUR
CONFIDENCE, CONTACT YOUR AUTHORIZED SERVICE AGENCY FOR RELIABLE SERVICE,
DEPENDABLE ADVICE OR OTHER ASSISTANCES, AND FOR GENUINE FACTORY PARTS.
MAINTENANCE:
1. Keep exposed, cleanable areas of unit clean at all times.
Daily:
A. Remove rack and wash daily. Remove grease drawer and wash thoroughly.
B. Remove the entire side linings, to which the rack slides are fastened, by lifting up and inward. Wash
thoroughly. (Models without letter A only.)
C. Make sure objects are not set on top of broiler to block the escape of exhaust gases.
Monthly:
A. Lubricate valve as required.
B. Clean around oven burner air mixer and orifices if lint has accumulated.
STAINLESS STEEL:
1. To remove normal dirt, grease and product residue from stainless steel that operates at LOW temperature, use
ordinary soap and water (with or without detergent) applied with a sponge or cloth. Dry thoroughly with a
dean cloth.
2. To remove grease and food splatter or condensed vapors that have BAKED on the equipment, apply cleanser
to a damp cloth or sponge and rub cleanser on the metal in the direction of the polishing lines on the metal.
Rubbing cleanser as gently as possible in the direction of the polished lines will not mar the finish of the
stainless steel. NEVER RUB WITH A CIRCULAR MOTION. Soil and burnt deposits which do not respond
to the above procedure can usually be removed by rubbing the surface with SCOTCH-BRITE scouring pads
or STAINLESS scouring pads. DO NOT USE ORDINARY STEEL WOOL, as any particles left on the
surface will rust and further spoil the appearance of the finish. NEVER USE A WIRE BRUSH, STEEL
SCOURING PADS (EXCEPT STAINLESS), SCRAPER, FILE OR OTHER STEEL TOOLS. Surfaces
which are marred collect dirt more rapidly and become more difficult to clean. Marring also increases the
possibility of corrosive attack. Refinishing may then be required.
3. To remove heat tint: Darkened areas sometimes appear on stainless steel surfaces where the area has been
subjected to excessive heat. These darkened areas are caused by thickening of the protective surface of the
stainless steel and are not harmful. Heat tint can normally be removed by the foregoing, but tint which does
not respond to this procedure calls for vigorous scouring in the direction of the polish lines using SCOTCHBRITE scouring pads, or a STAINLESS scouring pad, in combination with a powdered cleanser. Heat tint
action may be lessened by not applying, or by reducing, heat to unit during slack periods.
BLACK BAKED ENAMEL:
1. Allow unit to cool somewhat after use and wash exterior with a hot, mild detergent or soap solution;
particularly clean off all grease deposits. Dry thoroughly with a dry cloth.
COMPACT INFRA-RED BROILERS
SECTION TWO — USER'S GUIDE
PAGE 3
COMPACT INFRA-RED BROILERS
MRA-60
60 ¾ " 18"
35 ½”
MRA-32C
32" 15 3/8 " 22 7/8"
30 Wall Mount Kit
INSTALLATION
SPECIFICATIONS
MRA-30 (5 ADJUSTABLE GRID POSITIONS)
AT 2 ½ ". 3 ¾ ", 5". 6 ¼ ". 7 ½ " FROM BURNER
DIMENSIONS
END VIEW
FRONT VIEW
MODEL
WIDTH DEPTH HEIGHT
IN INCHES IN INCHES IN INCHES
Complete Unit Consists of (1) MR-L30 Leg Kit
(1) MRA-30 Basic Unit
MRA-32W 32" 19 1/16" 18 7/8"
Complete Unit Consists of (1) MR-W-
(1) MRA-30 Basic Unit
MRA-32 32" 19" 35 5/8"
Complete Unit Consists of (1) MR-S-32 Riser
(1) MRA-30 Basic Unit
MRA-36 36 ½ " 18" 35 ½ “
Complete Unit Consists of (1) MR-C36 Riser
(1) MRA-30 Basic Unit
Complete Unit Consists of (1) MR-K30 Riser
(1) MRA-30 Basic Unit
COMPACT INFRA-RED BROILERS
SECTION ONE — INSTALLATION
PAGE 1
INSTALLATION
MODELS
CLEARANCE
SIDES
BACK
Litho in U.S.A.
WARNING:
THESE PROCEDURES MUST BE FOLLOWED BY QUALIFIED PERSONNEL OR
WARRANTY WILL BE VOIDED.
GENERAL:
THE UNIT, WHEN INSTALLED, MUST CONFORM WITH LOCAL CODES, OR IN THE ABSENCE OF
LOCAL CODES, WITH THE NATIONAL FUEL GAS CODE ANSI Z223.1-LATEST EDITION. CANADIAN
INSTALLATION MUST COMPLY WITH CAN/CGA-B149.1 NATURAL GAS INSTALLATION CODE,
CODE CAN/CGA-B149.2 PROPANE INSTALLATION CODE.
These models are design certifed for operation on Natural and Propane gases. The Serial Plate is located
under the broiler grease drawer at the front, towards the left.
Gas
Natural 3 @ 10,666 BTU/Hr. No. 53 (P/N 1008753) .0240 (P/N 1161263) 4" W.C.
Propane 3 @ 10,666 BTU/Hr. No. 63 (P/N 1008763) .0145 (P/N 1161262) 10" W.C.
Total Burner Pilot Pressure
Rating Orifice Orifice Regulator
ORIFICE CHART
Minimum clearances from combustible construction:
MRA-32C 1IN. 1IN.
MRA-32W 1IN. 3% IN.
MRA-32, MRA-36, MRA-60 6 IN. 6 IN.
NOTE: For Model Nos. MRA-32C and MRA-32W a 6" clearance should be provided at the right side, since it is
necessary on all models to remove the body side to gain access to the regulator and 1/8 NPT pressure test tap.
An adequate gas supply is imperative. Undersized or low pressure lines will restrict the volume of gas required for
satisfactory performance. A pressure regulator, which is provided with each unit, is set to maintain a 4" W.C.
manifold pressure for natural gas and a 10" W.C. manifold pressure for propane gas. However, to maintain these
conditions the pressure on the supply line, when all units are operating simultaneously, should not drop below 7"
W.C. for natural gas or 11" W.C. for propane gas.
All pipe joints should be tested for leaks with a soap and water solution before operating the unit. The test
pressure should not exceed 14" W.C.
CAUTION: THIS APPLIANCE AND ITS INDIVIDUAL SHUTOFF VALVE MUST BE DISCONNECTED
FROM THE GAS SUPPLY PIPING SYSTEM DURING ANY PRESSURE TESTING OF THAT
SYSTEM AT TEST PRESSURES IN EXCESS OF 1/2 PSIG (3.45 kPa) (13.84 IN. W.C.).
THIS APPLIANCE MUST BE ISOLATED FROM THE GAS SUPPLY PIPING SYSTEM BY
CLOSING ITS INDIVIDUAL MANUAL SHUTOFF VALVE DURING ANY PRESSURE TESTING
OF THE GAS SUPPLY PIPING SYSTEM AT TEST PRESSURES EQUAL TO OR LESS THAN
1/2 PSIG (3.45 kPa) (13.84 IN. W.C.).
The unit must be installed in such a manner that the flow of combustion and ventilation air are not
OBSTRUCTED. An adequate air supply for combustion is obtained at the right rear of the unit. These openings
must NOT be OBSTRUCTED in any way while the unit is operating. The top and right side must be accessible
for service.
EXHAUST FANS AND CANOPIES:
Be sure to inspect and clean ventilation system according to the ventilation equipment manufacturers instructions.
Canopies are set over ranges, ovens, etc., for ventilation purposes. It is recommended that a canopy extend 6" past
appliance and be located 6' 6" from the floor. Filters should be installed at an angle of 45 degrees or more with the
horizontal. This prevents dripping of grease and facilitates collecting the run-off grease in a drip pan, usually
installed with a filter. A strong exhaust fan tends to create a vacuum in the room and may interfere with burner
performance or may extinguish pilot flames. Fresh air openings, approximately equal to the fan area, will relieve
such vacuum. In case of unsatisfactory performance on any appliance, check with the exhaust fan in the "OFF"
position.
COMPACT INFRA-RED BROILER
SECTION ONE — INSTALLATION
PAGE 2
Rev. 7-81
INSTALLATION
WARNING:
FOR AN APPLIANCE EQUIPPED WITH CASTERS, THE INSTALLATION SHALL BE MADE
WITH A CONNECTOR THAT COMPLIES WITH THE STANDARD FOR CONNECTORS FOR
MOVABLE GAS APPLIANCES, ANSI Z21.69-ANSI Z21.69-1987, AND ADDENDA, Z21.69a.l983,
AND A QUICK.DISCONNECT DEVICE THAT COMPLIES WITH THE STANDARD FOR QUICK-
DISCONNECT DEVICES FOR USE WITH GAS FUEL, ANSI Z21.41-1978, AND ADDENDA,
Z21.41a.l981 AND Z21.41b.l983. ADEQUATE MEANS MUST BE PROVIDED TO LIMIT THE
MOVEMENT OF THE APPLIANCE WITHOUT DEPENDING ON THE CONNECTOR AND THE
QUICK-DISCONNECT DEVICE OR ITS ASSOCIATED PIPING TO LIMIT THE APPLIANCE
MOVEMENT.
IF DISCONNECTION OF THIS RESTRAINT IS NECESSARY TO REMOVE THE APPLIANCE
FOR CLEANING, ETC., RECONNECT IT WHEN THE APPLIANCE IS MOVED TO ITS
ORIGINALLY INSTALLED POSITION.
GAS CONNECTION:
1. All MRA- Series broilers are factory equipped with a pressure regulator which is set for the type of gas
denoted on the serial plate.
2. If applicable, the vent line from the gas appliance pressure regulator shall be installed to the outdoors in
accordance with local codes or, in the absence of local codes, with the National Fuel Gas Code, ANSI Z223.1Latest Edition.
3. Gas supply connection is made on the right side. Remove the right body side for complete accessibility to
connection.
4. Gas supply connection can be made:
a. Rear:
Connection can be made by going directly into the pressure regulator (female connection
3/8 NPT).
b. Top:
Connection can be made by:
1. Removing knockout hole in top partition.
2. Screwing elbow into inlet end of regulator.
3. Cut access hole through expanded metal top.
4. Screwing supply pipe into elbow.
c. Bottom:
Connection can be made by:
1. Removing knockout hole in bottom.
2. Removing knockout hole in bottom cover (not supplied in counter units).
3. Screwing elbow into inlet end of pressure regulator.
4. Screwing supply pipe into elbow.
CAUTION: BE SURE TO HOLD PRESSURE REGULATOR WITH A WRENCH WHEN TIGHTENING
SUPPLY PIPE TO A VOID DAMAGE TO REGULATOR, VALVE, AND OTHER
COMPONENTS.
5. The unit should be connected only to the type of gas for which it is equipped. Check type of gas on rating
plate. On all threaded connections, the pipe compound must be approved for use with natural and propane gas.
6. Make sure burner valve is in the "OFF" position before connecting gas to unit. Test pipe connections
thoroughly for gas leaks. Use soapy water only.
7. Turn on burners and bleed supply line, then turn burners off.
8. Light pilots and adjust so that flame comes out the ends of the pilot flame carriers and extends
to the burner tile surface. PILOTS ARE ADJUSTABLE THROUGH THE HOLE ABOVE THE
VALVE KNOB.
NOTE: The six burner shipping screws located at each end of the three burners must be removed after installation.
COMPACT INFRA-RED BROILER
SECTION ONE — INSTALLATION
PAGE 3
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