Nieco N2500 Installation Manual

Model N2500

Owner’s Manual

A P P R O VA L S :

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.

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.

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 Nieco Authorized Dealer.

IMPORTANT: RETAIN THIS MANUAL IN A SAFE PLACE FOR FUTURE REFERENCE

Revi se d 9/2/2 009

TABLE OF CONTENTS

A. General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

A.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

A.2 Warranty Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

A.3 Service/Technical Assistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

A.4 Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

B. Machine Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

B.1 Pre-Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

B.2 Leveling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

B.3 Hood Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

B.4 Clearance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

B.5 Gas Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

B.6 Flexible Gas Line Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

B.7 Restraining Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

B.8 Electrical Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

B.9 Pre-Operation Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

C. Troubleshooting Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

D. Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

D.1 Controls and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

D.2 Step-by-Step Lighting Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . .12

D.3 Shutdown Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

D.4 Control Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

E. Cleaning and Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

F. Broil Chain Tension & Link Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

G. Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

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Nieco Corporation - Model N2500

A.1 Description

A. GENERAL INFORMATION

he Nieco

T
new, simplified ignition system, and digital controls to help eliminate broiling
problems and provide the operator with even greater control over the broiling
environment. The N2500 is flow-through, with an optional toaster section for
toasting and cheesemelting capabilities.

This manual provides the safety, installation and operating procedures for the
Nieco Automatic Broiler Model N2500. We recommend that all information con­tained in this manual be read prior to installing and operating the broiler.

®

odel N2500 automatic broiler, high release convection burners, a

M

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.

N2500 shown with optional bun belt

IMPORTANT!

Keep these instructions for future reference. If the unit changes ownership,

be sure this manual accompanies the equipment.

IMPORTANT

The Nieco Corporation reserves the right to change specifications and product design without

notice. Such revisions do not entitle the buyer to corresponding changes, improvements,

additions or replacements for previously purchased equipment.

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Nieco Corporation - Model N2500

A.3 Service/Technical Assistance

f you experience any problems with the installation or operation of your broiler, contact your local

I
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.

urchased from:

P

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 sup­plied by Authorized Nieco Distributors and Service Agencies will void the warranty and may significantly
alter the performance of your broiler. 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.

CAUTION

GENERAL CAUTION. Indicates
information important to the proper
operation of the equipment. Failure
to observe may result in damage to
the equipment.

ELECTRICAL WARNING. Indicates
information relating to possible
shock hazard. Failure to observe
may result in damage to the equip­ment and/or severe bodily injury or
death.

HOT SURFACE WARNING. Indicates
information important to the han­dling of equipment and parts.
Failure to observe caution could
result in personal injury.

WARNING

WARNING

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Nieco Corporation - Model N2500

A.4 Important Safety Information (Cont.)

n addition to the warnings and cautions in this manual, use the following guidelines for safe operation of

I
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

as been otherwise damaged.

h

• 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 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 in 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 located on the underside of the broiler for risk
of serious injury or death due to electrical shock.

WARNING, HIGH TEMPERATURES WITH HOT SURFACES. FAILURE TO FOLLOW THESE PROCE­DURES 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.

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Nieco Corporation - Model N2500

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 Leveling

The grease drain system is based on a gravity-flow design. Therefore, it is extremely important to level
the broiler during installation.

B.3 Hood Requirements

This appliance must be installed under a ventilation hood of adequate size and the following minimum
capacity:

Model SCFM
N2500 1650

Do not obstruct the flow of combustion and ventilation air. An adequate air supply must be available for
safe and proper operation.

B.4 Clearance

For proper installation the minimum required clearance from combustible construction and walls is 12”
(305 mm) from all sides of the broilers. The minimum required clearance from non-combustible construc­tion and walls is 0” (0 mm) from all sides of the broiler. Keep appliance area free from combustibles.
Check with local authorities (building and fire) for standards and requirements for wall and floor con­struction to comply with your local codes.

B.5 Gas Connection- 1” N.P.T.

At rated input the gas supply should deliver a minimum pressure of at least 15 mbar (5" water column)
at the broiler connection for natural gas. Incoming gas supply pressure must not exceed 50 mbar (14"
water column).

REQUIRED AND RECOMMENDED CLEARANCES

Back of broiler

Sides of broiler

Front of broiler
(Feed end)

REQUIRED for
installation near
combustible walls
and construction

12” (305 mm)

12” (305 mm)

12” (305 mm)

REQUIRED for installa­tion near non-com­bustible walls and
construction

0” (0 mm)

0” (0 mm)

0” (0 mm)

RECOMMENDED by
Nieco for proper disas­sembly and service

12” (305 mm)

12” (305 mm)

24” (610 mm)

CAUTION

SEVERE FIRE HAZARD. Follow local fire and building codes for non-combustible construc­tion. Failure to do so could result in a fire hazard. If unsure of your construction, follow min­imum clearances for combustible construction.

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Nieco Corporation - Model N2500

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 includ-

ng:

i

. The appliance and its individual shutoff valve must be disconnected from the gas supply

1

piping system during any pressure testing of that system at test pressures in excess of
1/2 psi (3.45 kPa).

. The appliance must be isolated from the gas supply piping system by closing its

2

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).

By public initiative, the State of California has adopted legislation (Proposition 65) which requires
manufacturers of many types of products, including gas appliances, to warn consumers of their
products that contain chemicals or produce substances listed by the State of California to either
cause cancer, birth defects or other reproductive harm.

WARNING

If not installed, operated and maintained in accordance with the manufacturers instructions, this
product could expose you to substances in fuel or from fuel combustion which can cause cancer,
birth defects or other reproductive harm.

B.6 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 Quick­Disconnect 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. (Minimal movement is
possible to connect hose.)

N2500 Equipment Side Gas

N2500 Manual

Gas Valve

Connection

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Nieco Corporation - Model N2500

B.7 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.

B.8 Electrical Connection

Power requirements are stated on the unit nameplate and must be connected accordingly. This 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
C22.2, 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.9 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

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Nieco Corporation - Model N2500

C. TROUBLESHOOTING

Always verify that the broiler is properly assembled, the hood is on, gas valve open and broiler is plugged in.

No power to broiler when the switch is turned on.

Broiler has power, but the burners do not light.

Red light blinking on left control box.

Hot surface ignitor does not heat.

Power is on, broiler is lit, but the conveyor belts are not
turning.

Load Sensing Control (LSC) stays in “Lo” even though
the broiler is warmed up.

Check: Broiler is plugged in.

Ventilation hood is on.
Circuit Breaker on wall panel is on.

Check: Ventilation hood is on.

Gas line is properly plugged in.
Manual gas valve (if equipped) is on.
Burners are installed properly.
Burners are clean and dry.
Flame sensor wire connection.

Follow manual lighting instructions.

Check the items above for burners not lighting.
Turn power off and on again to reset ignition.
Follow manual lighting instructions.

Check for loose wires connecting the hot surface ignitor.
Follow manual lighting instructions.

Check for a jam in the conveyor belt. Check the stripper
blade and the flame arrestors to make sure they are
installed properly.

Lower the set point by holding in the knob for 5
seconds, then setting the set point to match the actual
temperature. Refer to the calibration instructions in this
manual.

Feeder belt not moving.

Feeder jams.

Burgers sticking to slide or stripper blade.

COOKING PROBLEMS

Burgers under or over cooked.

Excessive flaming in broiler.

Make sure the feeder is assembled properly.
Check for jam.
Make sure the drive pin is engaged.

Make sure the burgers are not frozen together.

Clean the slide and stripper blade very thoroughly.
Check cookout temperature (undercooking).

Main side: adjust conveyor belt speed.
Flex side: adjust conveyor speed, duty cycle, and burner
settings.
Clean burners and orifices.

Clean the catalyst if equipped.
Check the hood for proper operation.
Check product for overcooking.

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Nieco Corporation - Model N2500