Nieco 940, 960 User Manual

AUTOMATIC

FOODSERVICE

EQUIPMENT

AUTOMATIC GAS BROILER

MODELS 940 GAS AND 960 GAS

OWNER’S MANUAL

IMPORTANT: RETAIN THIS MANUAL IN A SAFE PLACE

FOR FUTURE REFERENCE.

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.

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.

FOR Y OUR 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, maintenance

can cause property damage, injury, or death. Read the installation,

operating and maintenance instructions thoroughly before installing

or servicing this equipment.

TABLE OF CONTENTS

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

Description

B. Machine Installation.....................................................................................................................6

Pre-Installation Mounting Hood Requirements Clearance Gas Connection Electrical Connection Pre-Operation Check Gas Connectors and Restraining Device

C. Operation ......................................................................................................................................9

Controls and Indicators Gas System Controls Step-by-Step Lighting Procedure Shutdown Procedure Automatic Temperature Control Bun Platen Adjustment

D. Parts and Location.......................................................................................................................14

Model 960 & 940

E. Assembly/Disassembly and Cleaning ........................................................................................17

F. Conveyor Belt Removal...............................................................................................................21

G. Conveyor Belt Tension ........................................................................................................ .........22

H. Trouble Shooting Guide...............................................................................................................23

I. Wiring Diagrams...........................................................................................................................25

A. DESCRIPTION MODEL 940/960 AUTOMATIC GAS BROILER WITH ATC

Description

NIECO Model 940/960 Automatic Gas Broilers are compact, self-contained, flow-through units, which automatically broil hamburgers and grill buns.The broilers employ a 24” wide broil belt and gas burners in the meat cooking section.The lower bun grilling section uses an electrically heated platen to warm and brown buns which automatically pass beneath the platen on the 24” wide belt.

Model 940 and 960 Broilers are similar mechanically and electrically, except that the Model 960 has an additional set of upper and lower burners.

Automatic T emperature Control

Both broilers are equipped with an Automatic Temperature Control (ATC). This device responds to temperature changes in the cooking chamber by increasing or decreasing the flow of gas to the burners automatically.This automatic adjustment is an important factor in cooking consistency and energy savings.

HOW THE MODEL 940/960 WORKS

NIECO Model 940/960 Broilers are divided into two sections. As illustrated below, the conveyorized top section broils burgers on both sides at the same time using infra-red energy that is regulated by the ATC. Broiled burgers discharge on the opposite side of the unit with a lightly charbroiled flavor and attractive sear marks on the bottom side.

Buns are heated and grilled in the lower section of the broiler at the same time patties are being broiled in the top section. Buns are loaded (tops on the left, bottoms on the right) on a conveyorized bun feeder and automatically carried under an electrically heated platen to the opposite side of the unit.They emerge with a uniformly caramelized, golden brown surface.

B. INSTALLATION

PRE-INSTALLATION

Uncrate the broiler, and inspect for shipping damage. Contact the factory if there is obvious damage. Remove the tape securing the machine parts, and install the parts in their proper location. Refer to the Parts and Location section of this manual. If you find concealed damage to any part of this unit, contact your freight carrier immediately.The factory warranty does not cover freight damage.

MOUNTING

If the broiler was shipped with a tubular stand, refer to separate tubular stand assembly instructions.

Note: The four legs of the broiler stand are equipped with casters. Always set the brakes on the casters to prevent the broiler from shifting during operation or cleaning.

LEVELING

Make sure that the broiler is level. Factory stands are equipped with adjustable casters.

HOOD REQUIREMENTS

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

Model CFM 960 800 940 800

The hood should be at least 6" (152MM) larger in all dimensions than the appliance top, and be 12" to 18" (305MM - 457MM) above the top. Do not obstruct the flow of combustion and ventilation air.An adequate air supply must be available for safe and proper operation.

Note: See the National Fire Prevention Association booklet on ventilation of cooking equipment. Write to: NFPA, 470 Atlantic Ave., Boston, MA 02210. Local codes on venting must also be complied with.

CLEARANCE

For proper installation, the minimum clearance from combustible and non-combustible construction is 6" (152MM) from the back and 6" (152MM) from the front of the machine.Keep appliance area free from combustibles.

To facilitate disassembly and service of the unit a minimum of 24" (610MM) should be allowed on the control panel (right) side of the broiler, as well as in front of the broiler.

GAS CONNECTION

At rated BTU capacity, the gas supply should deliver a pressure of at least 6" water column at the broiler connection for natural gas, and 11" water column for propane gas. Incoming gas supply pressure must not exceed 14" water column for either type of gas.

The appliance was shipped from the factory ready for gas supply hook-up to the shutoff valve under the broiler.For disconnect, a manual valve must be located in the gas supply line upstream from the connecter.

If the machine is installed on a moveable stand;(1) the installation shall be made with a connector that complies with the Standard for Connectors for Moveable Gas Appliances, ANSI Z21.69-1987, and Addenda, Z21.6a-1989, and a quick disconnect device that complies with the Standard for QuickDisconnect Devices for Use With Gas Fuel, ANSI Z21.41-1989, and (2) 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. (See figures on page 6.)

Note: Appliance installation must conform with all local codes, or in the absence of local codes, with the National Fuel Gas Code ANSI Z223.1-1988. Check all fittings for gas leaks, including pilot tubing and inlet connections as soon as the appliance is connected to the gas supply.

Note: 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).

Note: 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).

In Canada, installation shall be in accordance with CAN/CGA-B149.1 Natural Gas or CAN/CGA-B149.2 Propane Gas, and local codes where applicable.

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 manufacturer's instructions, this product could expose you to substances in fuel, or from fuel combustion which can cause cancer, birth defects, or other reproductive harm.

ELECTRICAL CONNECTION

Power requirements are stated on the unit nameplate and must be connected accordingly.Before starting broiler, tighten all electrical connections in control box.An electrical diagram is located inside the control box.

Note: This appliance must be electrically grounded in accordance with local codes or in the absence of local codes, the National Electrical Code, ANSI/NFPA No. 70-1990. In Canada, in accordance with the Canadian Electrical Code CSA 22.1 part 1, or local codes.

WARNING:This appliance should be connected with a four-pronged grounding plug for your protection against shock hazard. Be sure to plug directly into a properly grounded four-prong receptacle. Do not cut or remove grounding prong from plug.

Note:

This appliance cannot be safely operated in the event of a power failure. No attempt

should be made to operate during a power failure.Disconnect power supply before servicing.

PRE-OPERATION CHECK

Be sure that all parts are installed in the proper location. Refer to OPERATION section for lighting proce- dure. Star t broiler and test for proper operation.

INSTALLING GAS APPLIANCE CONNECTORS AND FLEXIBLE GAS LINES CORRECTLY

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 safety in the kitchen area, and to insure maximum service life, it is vitally important to correctly install connectors.

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.)

WRONG

Avoid sharp bends and kinks when pulling equipment away from wall.

RIGHT

Minimum pull of equipment is permissible for accessibility to quick disconnect device.

C. OPERATION MODEL 940/960 CONTROLS AND INDICATORS

a. Gas Pressure Gauge. Pressure readings should

agree with those listed on the rating plate on the control box cover. If not, contact your NIECO authorized distributor.

Fuse.

c. High Gas On (amber). High Gas pressure solenoid

is on.

d. Bun Platen Thermostat. Set between 350° and

400° and vary to desired bun caramelization.

Pilot Ignitor (orange). Push with pilot button to light pilot.

Motor On/Off Switch. Controls conveyor belt.

Main Power On/Off Switch and Indicator Light.

h. Motor Speed Control. Controls conveyor belt

speed.

i. Upper Pilot Button (red). Push to light upper pilot. j.

Bun Platen Height Adjustment. Cams on right and left side of unit permit height adjustment to compensate for small bun thickness variations. For major adjustments add or remove spacers from underneath platen mounting brackets on top of platen.

Lower Pilot Button (red). Push to light lower pilot.

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