Nieco MPB73 User manual

W A R N I N G :
Improper installation, adjustment, alteration, maintenance can cause property damage, injury, or
death. Read the installation, operating and maintenance instructions thoroughly before installing
or servicing this equipment.
F O R Y O U R S A F E T Y:
Do not store or use gasoline or other flammable vapors or liquids in the vicinity of this or any
other appliance.
A P P R O VA L S :
IMPORTA T: RETAI THIS MA UAL I A SAFE PLACE FOR FUTURE REFERE CE
Updated 6/3/08
Broiler area must be kept free of combustible materials, and the flow of combustion and ventilation
air must not be obstructed. Operating personnel must not perform any maintenance or repair
functions. Contact your ieco Authorized Dealer.
M del MPB73
Owner’s Manual

3
TABLE OF CONTENTS
A. GeneralInformation ...........................................3
A.1 Description .............................................3
A.2 WarrantyInformation .....................................3
A.3 Service/Technical Assistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
A.4 SafetyInformation .......................................4
B. achineInstallation ...........................................6
B.1 Pre-Installation ..........................................6
B.2 Mounting ..............................................6
B.3 Leveling ...............................................6
B.4 HoodRequirements ......................................6
B.5 Clearance..............................................6
B.6 GasConnection .........................................7
B.7 Flexible Gas Line Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
B.8 RestrainingDevice .......................................8
B.9 ElectricalConnection .....................................8
B.10Pre-OperationCheck .....................................8
C. Operation ....................................................9
C.1 ControlsandIndicators ...................................9
C.2 Step-by-Step Lighting Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . .11
C.3 ShutdownProcedure ....................................12
C.4 ControlOperation.......................................12
D. Assembly/Disassembly and Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
E. TroubleshootingGuide ........................................24
F. PartsLocationDrawings ......................................25
G. Specifications ...............................................27
Nieco Corporation - Model MPB73

4
A. GENERAL INFOR ATION
A.1 Description
The Nieco®Model MPB73 automatic broiler features high release convection
burners, electric elements, a new, simplified ignition system, easy cleaning and
a simple and intuitive control package to help eliminate broiling problems and
provide the operator with even greater control over the broiling environment.
This manual provides the safety, installation and operating procedures for the
Nieco Automatic Broiler Model MPB73. We recommend that all information
contained in this manual be read prior to installing and operating the broiler.
A.2 Warranty Information
Please read the full text of the limited Warranty in this manual.
If the unit arrives damaged, contact the carrier immediately and file a damage
claim with them. Save all packing materials when filing a claim. Freight damage
claims are the responsibility of the purchaser and ARE NOT covered under warranty.
The warranty does not extend to:
• Damages caused in shipment or damage as a result of improper use.
• Installation of electrical service.
• Normal maintenance as outlined in this manual.
• Malfunction resulting from improper maintenance not in accordance with the steps contained in
this manual and any applicable training.
• Damage caused by abuse or careless handling outside of the normal operating procedures
contained in this manual.
• Damage from moisture into electrical components.
• Damage from tampering with or removal of any safety device.
I PORTANT!
Keep these instructions for future reference. If the unit changes ownership,
be sure this manual accompanies the equipment.
I PORTANT
The Nieco Corporation reserves the right to change specifications and product design.
Such revisions do not entitle the buyer to corresponding changes, improvements,
additions or replacements for previously purchased equipment.
Nieco Corporation - Model MPB73

5
A.3 Service/Technical Assistance
If you experience any problems with the installation or operation of your broiler, contact your local
Authorized Nieco Distributor.
Fill in the information bellow and have it handy when calling your authorized service agency for assistance.
The serial number is on the broiler rating plate on the side of the unit.
Purchased from:
Date of Purchase:
Model No.:
Serial No.:
For the name of your local Authorized Nieco Distributor, please call [phone].
Use only genuine Nieco replacement parts in your broiler. Use of replacement parts other than those sup-
plied by Authorized Nieco Distributors and Service Agencies will void the warranty and may significantly
alter the performance of your broiler. The use of non-Nieco parts is capable of affecting these criteria, and
may affect broiler performance, parts longevity and food safety. Your local Authorized Nieco Distributor and
Service Agent has been factory trained and has a complete supply of parts for your Nieco Automatic
Broiler.
You may contact the factory direct at [phone] if you have trouble locating your local Nieco
Distributor.
A.4 Important Safety Information
Throughout this manual, you will find the following safety words and symbols that signify important safety
issues with regards to operating or maintaining the equipment:
WARNING
GENERAL WARNING. Indicates
information important to the proper
operation of the equipment. Failure
to observe may result in damage to
the equipment and/or severe bodily
injury or death.
WARNING
ELECTRICAL WARNING. Indicates
information relating to possible
shock hazard. Failure to observe
may result in damage to the equip-
ment and/or severe bodily injury or
death.
CAUTION
GENERAL CAUTION. Indicates
information important to the proper
operation of the equipment. Failure
to observe may result in damage to
the equipment.
WARNING
HOT SURFACE WARNING. Indicates
information important to the han-
dling of equipment and parts.
Failure to observe caution could
result in personal injury.
Nieco Corporation - Model MPB73

6
A.4 Important Safety Information (Continued)
In addition to the warnings and cautions in this manual, use the following guidelines for safe operation of
your Nieco Automatic Broiler:
• Read and follow all instructions before using this equipment.
• Install or locate broiler only for its intended use as described in this manual.
• Do not operate this equipment if it has a damaged cord or plug, if it is not working properly or if it
has been otherwise damaged.
• This equipment should only be serviced by authorized personnel. Contact your local Nieco
Distributor for adjustment or repair.
• Use only genuine Nieco replacement parts for your broiler. Failure to do so will void the warranty
and may significantly alter the performance of your broiler. The use of non-Nieco parts is capable
of affecting these criteria, and may affect broiler performance, parts longevity and food safety.
The following warnings and cautions appear throughout the manual and should be carefully
observed:
• Turn the broiler off, close the main gas valve, and disconnect the plug before
performing any service, maintenance or cleaning on the broiler.
• Always allow the broiler to fully cool before performing any service, maintenance or
cleaning. Failure to wait for the broiler to cool fully may result in personal injury.
• The procedures in this manual may include reference to the use of chemical products. The
Nieco Corporation does not endorse the use of any particular cleaning/degreasing agent.
Use only those chemicals that are approved for use your kitchen.
• The broiler should be grounded according to local electrical codes to prevent the
possibility of electrical shock. It requires a grounded receptacle with separate electrical
lines, protected by fuses or circuit breakers of the proper rating.
• All electrical connections must be in accordance with local electrical codes and any other
applicable codes.
• The use of adequate ventilation (as rated in this manual) with this broiler is mandatory.
Failure to adequately ventilate this unit and provide safe operating distances (as specified
in this manual) is a fire safety hazard. Follow the instructions for emergency broiler
shutdown in the event of an emergency.
• No attempt should be made to operate this appliance in the event of a power failure.
WARNING ELECTRICAL SHOCK HAZARD. FAILURE TO FOLLOW THESE INSTRUCTIONS COULD
RESULT IN SERIOUS INJURY OR DEATH:
_Electrical ground is required on this appliance.
_Check with a qualified electrician if you are in doubt as to whether the appliance is properly
grounded.
_Do not use water on or near the control box for risk of serious injury or death due to
electrical shock.
WARNING, HIGH TE PERATURES WITH HOT SURFACES. FAILURE TO FOLLOW THESE PROCE-
DURES COULD RESULT IN SERIOUS INJURY:
_Do not attempt to clean, disassemble or perform maintenance on this broiler until it is fully
cooled as per the instructions contained in this manual.
Nieco Corporation - Model MPB73

7Nieco Corporation - Model MPB73
B. INSTALLATION
B.1 Pre-Installation
Uncrate the broiler and inspect for shipping damage. Remove the tape securing the machine parts, and
install the parts in their proper location. If there are obvious or concealed damages to any part of the
broiler, please contact your freight carrier. The factory warranty does not cover freight damage.
B.2 ounting
Follow the mounting instructions if this function is not performed by the installer.
B.3 Leveling
The grease drain system is based on a gravity-flow design. Therefore, it is extremely important that the
broiler be placed on a level surface.
B.4 Hood Requirements
This appliance must be installed under a ventilation hood of adequate size and the following minimum
capacity:
Do not obstruct the flow of combustion and ventilation air. An adequate air supply must be available for
safe and proper operation.
For installations in the Commonwealth of Massachusetts the following shall apply: Venting shall be in
compliance with NFPA Section 10.3.5.2 for the Model MPB84.
B.5 Clearance
eep appliance area free from combustibles.
To facilitate disassembly and service of the unit a minimum of 24” (610 mm) should be allowed on the
control panel (feed end) of the broiler.
REQUIRED for
installation near
combustible walls
and construction
REQUIRED for installa-
tion near non-com-
bustible walls and
construction
RECO ENDED by
Nieco for proper disas-
sembly and service
Back of broiler
Sides of broiler
Front of broiler
(Feed end)
REQUIRED AND RECO ENDED CLEARANCES
12” (305 mm) 0” (0 mm)
0” (0 mm)
24” (610 mm)
0” (0 mm)
0” (0 mm)
0” (0 mm)
12” (305 mm)
12” (305 mm)

8
B.6 Gas Connection- 3/4” N.P.T.
At rated input the gas supply should deliver a minimum pressure of at least 15 mbar (6" water column)
at the broiler connection for natural gas. Incoming gas supply pressure must not exceed 50 mbar (14"
water column).
Note: The installation of this appliance must conform with local codes, or in the absence of local codes,
with the National Fuel Gas Code, ANSI Z223.1, Natural Gas Installation Code, CAN/CGA-B149.1
including:
1. The 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 psi (3.45 kPa).
2. The 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 psi (3.45 kPa).
B.7 Installing Gas Appliance Connectors and Flexible Gas Lines Correctly
For safety in the kitchen area, and to insure maximum service life, it is vitally important to correctly install
connectors. The connector shall comply with the Standard for Connectors for Moveable Gas Appliances,
ANSI Z21.69 or CAN/CGA-6.16 and a quick disconnect device that complies with the Standard for Quick-
Disconnect Devices for use with gas fuel, ANSI Z21.41 or CAN1-6.9
In order to avoid sharp kinks or excessive bends that could have a damaging effect on the connector, it
may be necessary to attach pipe elbows in order to bring the connector into its proper plane. For easy
movement of the appliance, the connector should be installed with a "lazy" loop for minimum tension.
Note: Gas appliances should be disconnected prior to maximum movement. ( inimal movement is
possible to connect hose.)
B.8 Restraining Device Installation and Use
This high strength restrainer is to be used with all moveable (castered) appliances. It fully complies with
American Gas Association requirements. References: Z21.69, Z83.11, and Z21.41 with current revisions.
Installation is quick and positive. In Canada, device is in accordance with CAN 1-6.9-M70 Quick
Disconnect Devices for use with gas fuel, and CAN 1-6.10-88 metal connectors for gas appliances.
Correct length for any appliance is simply a matter of loosening two adjuster clips (1) and re-tightening.
(3" to 6" shorter than appliance connector is desired length.) Restrainer is made of heavy duty steel
cable, with a strong scissor hood (2) at one end, and an equally strong spring hook (3) at the other.
Cotter pin (4) is supplied to secure the installation. For proper attachment to the broiler, use the supplied
hardware to attach the device to the holes in the shear plate of the broiler stand.
NOTE: If disconnection of the restraint is necessary, reconnect the restraint after the appliance
has been returned to its originally installed position.
Nieco Corporation - Model MPB73

9Nieco Corporation - Model MPB73
B.9 Electrical Connection
Power requirements are stated on the unit nameplate and must be connected accordingly. This appli-
ance, 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
C22.2, as applicable. Before starting broiler, tighten all electrical connections in control box. An electrical
wiring diagram can be found inside the control box.
Note: Disconnect power before servicing.
B.10 Pre-Operation Check
Be sure that all parts are installed in the proper location:
Ventilation is turned on
Broiler is plugged in
Gas line is connected

10
C. OPERATION
C.1 Controls and Indicators
ON THE SIDE
Left Belt Speed
Control - Push
and turn to set
cook times
Right Belt
Speed Control
- Push and
turn to set
cook times
Load Sensing
Control - Use
to calibrate
broiler and set
temperature
Main On/Off
Switch - Push
up to turn on,
down to turn
off
On/Off Indicator Light
Broiler is on when
illuminated
ON DISCHARGE END
Gas Gauge
P/N 16036
CONTROL BOX SIDE
Belt Reverse Buttons - Push to reverse the
belts in case of a jam.
Nieco Corporation - Model MPB73

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C.2 Lighting Procedures
1. Broiler is
centered under
hood and
plugged in
2. Gas valve is
open when
handle is in line
(parallel to) the
pipe
2. Gas line is
connected
3. Turn ventilation
system on
1. Turn the AIN POWER SWITCH on. 1.
2.
3.
4.
The MPB73 is equipped with automatic ignition. When the broiler is turned on, a hot surface ignitor turns on 5 seconds
before the flow of gas. Gas then flows to all of the burners. If the burners are not lit within 10 seconds, the control will
reset and try again for 10 seconds. This occurs 3 times. If the broiler does not light after the third attempt, the ignition
failure light will flash and the main on/off switch must be cycled to repeat the procedure. If this still doesn’t light the
broiler, see the MANUAL IGNITION instructions.
2. Check GAS PRESSURE GAUGE reading. Gauge
should read 4”*. If the gauge is not easy to see look to
make sure that all burners - upper and lower - have lit.
3. Allow broiler to heat for 45 minutes before cooking.
During the warm up period, the control will display “Lo”
(low). Do not cook during the warm up period.
4. Allow broiler to heat for 45 minutes before cooking.
After warm-up period, the load sensing control should
read “Rdy” (ready).
*For Natural Gas only. For LP broilers: Gas pressure
should be 11”.
NOR AL IGNITION
PRE-LIGHTING PREPARATION
Nieco Corporation - Model MPB73

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C.2 Lighting Procedures (Continued.)
ANUAL IGNITION
Nieco Corporation - Model MPB73
1. Turn the AIN POWER SWITCH on. Hold a
lighter/match to the first upper burner on the discharge
end until the burner lights. Once the first burner is lit, veri-
fy that all burners have ignited.
2. Check GAS PRESSURE GAUGE reading. Gauge
should read 4”*. If the gauge is not easy to see look to
make sure that all burners - upper and lower - have lit.
*For Natural Gas only. For LP broilers gas pressure should be 11”.
1. Allow the broiler
to run free of
any product for
15 minutes.
This will burn
the chain clean.
2. Turn off the
AIN POWER
SWITCH.
3. Wait for 30
minutes for the
broiler to cool.
C.3 Shutdown Procedures
PLANNED SHUTDOWN
2. Close the AIN
GAS VALVE (b)
Valve is closed
when it is
perpendicular to
pipe.
E ERGENCY SHUTDOWN
1. Turn off the
AIN POWER
SWITCH.
Your Nieco Automatic Broiler is designed to automatically stop gas flow to the broiler in the event of power fail-
ure, gas pressure loss or any other related incident. No attempt to operate this appliance should be made in the
event of a power failure.
CAUTION
In a prominent location, post
instructions to be followed in the
event the user smells gas. This
information shall be obtained by
consulting your local gas supplier.
CAUTION
FOR YOUR SAFETY: Do not store
or use gasoline or other flammable
vapors or liquids in the vicinity of
this or any other appliance.
CAUTION
FOR YOUR SAFETY: In the event of
a prolonged power failure, no
attempt should be made to operate
this appliance.
1.
2.

13
C.4 Control Operation
Nieco Corporation - Model MPB73
-+

C.4.1 SETTING BELT SPEEDS
Lift cover, press and turn the belt speed control
knob to the desired speed setting. The control
displays real time.
C.4.2 LOAD SENSING CONTROL
How it works:
The MPB73 is equipped with a load sensing
control. This control will detect when your broiler
is getting too hot and will lower the gas pressure
to help cool the broiler down (in the event of a
flare up). The control is factory set, and does not
require any changes.
Operation:
When the broiler is first turned on, the control
will display: Lo (low - see figure A). If the con-
trol is displaying Lo, DO NOT COOK ON THE
BROILER. The load sensing control will display
Rdy (ready - see figure B) when the broiler is
ready to cook on.

-+

A
-+

B

14
D. CLEANING AND DISASSE BLY
Turn broiler off and close the main gas valve. Disconnect the power supply to the broiler before cleaning or
servicing. If this broiler is connected using a restraint, and disconnection of the restraint is necessary for clean-
ing or moving the broiler, the restraint must be reconnected after the broiler has been returned to its originally
installed position. Allow to cool for 30 minutes prior to cleaning/disassembly. Leave the ventilation system on
during cooling. Use only approved cleaning, degreasing and sanitizing solutions.
ALL PARTS ARE CLEANED ON A DAILY BASIS UNLESS OTHERWISE NOTED
Follow the steps for proper disassembly. Reverse the order for reassembly.
CAUTION
Follow the Disassembly and
Reassembly steps to ensure proper
operation of the broiler. Failure to
do so may result in operational
problems.
WARNING
BROILER PARTS ARE HOT. DO
NOT ATTE PT TO DISASSE BLE
THE BROILER UNTIL IT IS FULLY
COOL. FAILURE TO FOLLOW THIS
INSTRUCTION AY RESULT IN
SEVERE INJURY.
WARNING
LEAVE THE VENTILATION HOOD
ON DURING COOLING. FAILURE TO
DO SO COULD POSE A FIRE
SAFETY HAZARD.
Nieco Corporation - Model MPB73
How to read the cleaning section
The location of the part.
Lift and remove.
Wash, rinse, and sanitize in the 3- ompartment sink
or dishwash.
REASSEMBLY: Hang feeder housing on bra kets.
Feeder Housing
Feed End
Tools
Instructions
3-Compartment Sink
Clean: Daily
1.
2.
S rub Pad
When to clean the part.
icture of the part to be
removed and cleaned.
How to remove and
clean the parts.
The tools needed to
clean the part
The name of the part to be cleaned.

15 Nieco Corporation - Model MPB73
Instructions
1. Allow the broiler to run free of product for 15
minutes before turning it off. This allows any
residue to burn off the chains.
Shut the broiler off and let it cool for 30 minutes
before disassembly and cleaning.
Close the main gas valve and unplug the broiler
before cleaning.
Always leave the ventilation hood on during the 30
minute cool down period.
Use only approved cleaning solutions.
Allow parts to air dry after cleaning.
NOTE: For clarity, some instructions are shown
without using high temperature gloves. Always use
gloves when the glove icon is shown.
Cleaning the Broiler
3-Compartment Sink
No-Scratch ad Scrub ad Towel
Heat
Resistant
Gloves
Degreaser
Soft Bristle
Brush
Utility
Knife
Small Orifice
Brush Shaft Cleaning
Tool
Tools Needed
1.
2.
This “Stop” sign shows a step in the procedure that
must be followed exactly or personal safety could
be affected.
This warning symbol shows a step in the procedure
that must be followed exactly or broiler
performance could be affected.
This “puzzle” symbol shows a step in the
reassembly procedure that must be followed.
3.
4.
5.
!
Important Symbols
STOP 6.
Large Orifice
Brush
ull the release pin.
Lift push bar and wire belt feeder bases up and off.
Wash, rinse, and sanitize in the 3-compartment sink
or dishwash.
REASSEMBLY: ull the release pin and place feeder
base in position.
Wire Belt Feeder Base P/N 17548 (LH) 17541 (RH)
Feed End
Tools
Instructions
3-Compartment Sink
Clean: Every 4 hours / per shift
1.
2.
3.
Scrub ad
ull release pin

16 Nieco Corporation - Model MPB73
Lift and remove.
Wash, rinse, and sanitize in the 3-compartment sink
or dishwash.
REASSEMBLY: Hang feeder housing on brackets.
Feeder Housing - P/N 17517
Feed End
Tools
Instructions
3-Compartment Sink
Clean: Daily
1.
2.
Scrub ad
Slide grease pan out.
Make sure grease pan is cool before putting in
water or it may warp the pans.
Take to sink area and spray with degreaser.
Wash with a scrub pad, rinse, and sanitize in the
3-compartment sink.
NOTE: Your M B73 shipped with two (2) grease
pans. If necessary, rotate them during the day as
needed.
Grease Pan - P/N 17601
Feed End
Tools
Instructions
Clean: Daily or as needed
3-Compartment Sink
Scrub ad
Heat Resistant Gloves
Degreaser
1.
2.
3.
!

17 Nieco Corporation - Model MPB73
!
Lift pan insert out.
Take to sink area and spray with degreaser. or
place part in dip tank.
Wash with a scrub pad, rinse, and sanitize in the
3-compartment sink.
Air dry.
Make sure insert is cool before putting in water or
it may warp.
Discharge Pan Insert - P/N 17605
Discharge End
Tools
Instructions
Clean: Per hift
3-Compartment Sink
Degreaser
1.
2.
3.
4.
Green
Scrub ad Dip Tank - If
Applicable
Lift discharge pan up and off slots.
Take to sink area and spray with degreaser.
Wash with a scrub pad, rinse, and sanitize in the
3-compartment sink.
Air dry.
an hooks on slots.
Discharge Pan - P/N 17604
Discharge End
Tools
Instructions
Clean: Daily
1.
2.
3.
3-Compartment Sink
Degreaser
Green
Scrub ad
4.

18 Nieco Corporation - Model MPB73
Wipe debris around grease box opening into the
grease box before removing.
Slide grease box out.
Let oil first cool to room temperature, dispose oil in
trash, normal automatic dishwasher procedures.
Air dry.
Grease Box - P/N 17110
Discharge End
Tools
Instructions
Dishwasher
Clean: Twice daily
1.
2.
3.
Green
Scrub ad
4.
Tilt stripper blade away from chain; lift off
brackets.
Make sure stripper blade is cool before putting in
water or it may warp.
Take to sink area and spray with degreaser.
Wash with a scrub pad, rinse, and sanitize in the
3-compartment sink.
REASSEMBLY: Hang stripper blade on brackets.
tripper Blade - P/N 17598
Discharge End
Tools
Instructions
Clean: Daily
3-Compartment Sink
Scrub ad
Heat Resistant Gloves
Degreaser
1.
2.
3.
!
Bracket

19 Nieco Corporation - Model MPB73
Scrape each shaft of both belts on the discharge
end with the wide end of the shaft cleaning tool
that came with your broiler. Wipe shaft cleaning
tool with a towel.
Do not run the broiler while cleaning the shafts.
Clean only the part that is accessible.
Chain hafts
Discharge End
Tools
Instructions
Clean: Daily
1.
Shaft Cleaning
Tool
!
Lift and remove side panels.
Wipe clean with a no scratch pad.
ide Panels - P/N 17620
ide
Tools
Instructions
Clean: Weekly
1.
2.
No-Scratch ad

20 Nieco Corporation - Model MPB73
3-Compartment Sink
Open the side access door.
Slide burners out.
Take to the 3-compartment sink and scrub with a
scrub pad.
If necessary, use a stiff toothbrush to clean any
clogged burner holes.
Repeat steps for all burners.
REASSEMBLY: Be sure the holes on the burner are
facing up.
Burners must be completely dry before reassembly.
Lower Burners - P/N 16974 (Double); 17622 ( ingle)
ide
Tools
Instructions
Clean: Weekly
Heat Resistant Gloves
1.
2.
3.
4.
5.
Scrub ad
!
From the feed end, lift up and pull towards you.
Wash with a scrub pad, rinse, and sanitize in the
3-compartment sink.
REASSEMBLY: Make sure shields are seated
properly on brackets.
Lower Burner hields - 16988
Feed End
Tools
Instructions
3-Compartment Sink Scrub ad
Clean: Weekly
Heat Resistant Gloves
1.
2.