6420 - Food Warmer Nemco - Free user manual and instructions

Product Type	Warming Tray
Brand	Nemco
Model	6420
Dimensions (W x D x H)	24 x 12 x 4 inches (approx.)
Weight	8 lbs (approx.)
Power Supply	120V AC, 60Hz, 250W
Temperature Range	100°F to 200°F (adjustable thermostat)
Material	Stainless steel top with plastic base
Heating Element	Hidden, even heating
Control Type	Dial thermostat
Indicator Light	Power-on indicator
Safety Features	Automatic shut-off (overheat protection)
Cleaning	Wipe with damp cloth; do not immerse in water
Maintenance	Check cord and plug regularly; no lubrication needed
Accessories Included	Power cord with plug; user manual
Warranty	1 year limited warranty
Certifications	UL, ETL listed
Repairability	Replaceable power cord; thermostat serviceable by technician
Spare Parts Availability	Contact Nemco or authorized dealers for parts
Recommended Use	Keeping food warm for serving

Frequently Asked Questions - 6420 Nemco

How do I clean the Nemco 6420 warming tray?

Unplug the unit and let it cool completely. Wipe the surface with a damp cloth and mild detergent. Do not immerse in water or use abrasive cleaners.

Can I leave food on the warming tray overnight?

It is not recommended. The tray is designed for short-term serving. Remove food after use and turn off the unit to avoid overheating.

What is the maximum temperature of the Nemco 6420?

The adjustable thermostat can reach up to 200°F (93°C). Use the dial to set the desired temperature.

Does the warming tray have automatic shut-off?

Yes, it includes overheat protection that automatically turns off the tray if it exceeds safe temperatures.

Can I use metal utensils on the warming tray?

Avoid using metal utensils that may scratch the stainless steel surface. Use silicone or wooden utensils instead.

What type of cookware can I place on the tray?

Use flat-bottomed pans, dishes, or serving platters that are oven-safe. Avoid plastic or paper containers.

How do I adjust the temperature?

Turn the thermostat dial clockwise to increase heat, counterclockwise to decrease. The indicator light shows when the tray is heating.

Is the Nemco 6420 safe for commercial use?

Yes, it is designed for both residential and light commercial use. Check local codes for commercial compliance.

What should I do if the tray stops heating?

Check the power cord and outlet. If the unit is warm but not heating, the thermostat may need resetting. Contact customer support for further assistance.

Can I use the warming tray outdoors?

No, it is intended for indoor use only. Do not expose to rain or moisture.

USER MANUAL 6420 Nemco

FOOD EQUIPMENT HEATED DISPLAY CASE

Model Series: 6420, 6420-4, 6424 OPERATING INSTRUCTIONS

INTRODUCTION

1. Please read instructions before using this appliance.

2. When using electrical appliances, always follow basic precautions to reduce the risk of fire, electric shock and injury to persons.

3. Clean machine thoroughly before and after all uses using cleaning instructions below.

SAFETY INSTRUCTIONS

1. Plug electrical cord into a certified electrical outlet with a corresponding voltage rating as listed on the machine model labels.
2. Always unplug the electric cord when appliance is not in use and before cleaning, adjusting or maintaining this machine. Do not operate with a damaged cord or plug or after the machine malfunctions, has been dropped or damaged. Use authorized service for examination, electrical or mechanical adjustment or repair.
3. This machine will be HOT during use and for a short time after it is turned off - BE CAREFUL. To avoid burns, do not let bare skin touch hot surfaces. Keep combustible materials away from appliance.
4. Use extreme caution when any appliance is used by or near children and whenever the appliance is left operating and unattended.
5. This appliance is not intended for use near or around water. Never locate appliance where it may fall into a water container.
6. Do not insert or allow foreign objects to enter any ventilation or exhaust opening as this may cause an electrical shock, fire or damage to the appliance. Do not block air intakes or exhaust in any manner. Do not use on soft surfaces where openings may become blocked.

PREPARATION

1. Remove all packing pieces and lift unit out of the box.
2. Remove any outside packaging.
3. Remove any plastic coating that may be affixed to stainless steel surfaces.
4. Be sure the round tier rack systems (equipped on models that rotate) are secure at the top and bottom.
5. CAUTION - To reduce the risk of fire, the appliance is to be installed in non-combustible surroundings only, with no combustible material within 18 inches of the sides, front, or rear of the appliance or within 40 inches above the appliance. The appliance is to be mounted on floors of noncombustible construction with non-combustible flooring and surface finish and with no combustible material against the underside, or on noncombustible slabs or arches that have no combustible material against the underside. Such construction shall in all cases extend not less than 12 inches beyond the equipment on all sides.
6. Unit can only be operated with the 4" legs provided. Failure to do so will cause damage to the unit.
7. Set unit on a flat surface.
8. Position unit near the power outlet. Avoid the use of extension cords. Do not run cord under carpeting or cover with runners or the like. Arrange cord where it will not be tripped over.
9. This appliance has hot and live electrical parts. Do not use in areas where gasoline, paint or flammable liquids are used or stored.
10. If unit fails to work properly when first operated call NEMCO customer service at 1-800-782-6761.

ELECTRICAL REQUIREMENTS

Refer to the product tag (serial plate) on the back of the unit for voltage and wattage requirements. Be sure to plug unit into grounded outlet with sufficient power.

WARNING: DURING NORMAL OPERATIONS THE EXTERIOR OF THE UNIT IS HOT.

OPERATION

1. Fill the water reservoir to provide humidity as required. Do not overfill.
2. Plug the unit into the appropriate power supply.
3. Turn heat switch to on position.
4. Turn temperature switch to high and preheat approximately 15 minutes.
5. Turn the temperature control to desired setting. (High, Medium or Low)
6. Load food products when pre-heat is complete.
7. Turn on the light switch for lights and rotating rack if equipped.
8. Pull pin and lift the top coupling to remove rack.
9. To disconnect appliance, turn controls to off and remove plug from outlet.

CLEANING

NOTE: Proper maintenance plays an important part in the life span and functioning of the unit.

1. Turn the temperature control to the off position.
2. Turn the light switch and heat switch off.
3. Unplug the unit from the power supply.
4. Do not attempt to clean unit while it is turned on; it will be hot during operation.
5. The rotary rack is removed by lifting on the drive coupling located at the top of the shelf system and carefully removing the rack from the interior of the case. Stationary racks just lift out. Wash with warm water and a mild detergent. Rinse and dry. Rack can be installed by reversing process.
6. Clean daily. Clean excess food debris from the interior of the unit.
7. Clean the water reservoirs daily with a scouring pad and mild detergent. Use of distilled water in the reservoirs will reduce mineral deposit build-up.
8. Clean interior and exterior of unit with a mild detergent and warm water. Be sure to dry unit.
9. Do not immerse in water or other liquid. Avoid splashing water into the motor unit.

SERVICE INSTRUCTIONS

1. For warranty or service information, please refer to the attached "Nemco Food Equipment Warranty Service Procedures."
2. The light can be replaced easily in the event it burns out. Be sure to replace it with a shatterproof fluorescent light.

NOTE THAT THERE MUST

BE AN 18" NON-COMBUSTIBLE

ZONE ON ALL (4) SIDES & A 40"

NON-COMBUSTIBLE ZONE

FROM THE TOP

ITEM NUMBER	PART NUMBER	DESCRIPTION
1	47472	SOCKET
	46356	BULB
2	45768-3	MOTOR 6420, 6420-4
3	46774	THERMOSTAT
	47716	KNOB
4	80569-1	TEMPERATURE READOUT BOARD
5	47420	ROCKER SWITCH
6	69168	OUTER DOOR ASSEMBLY
	69170	INNER DOOR ASSEMBLY
	67381	HINGE PIN
	47122-B	MAGNETIC STRIPPING
7	48601	SIDE GLASS PANEL
	45992	FRONT GLASS PANEL
	48620	DOOR GLASS PANEL
8	67097	RACK, 3-TIER 12” 6420
	67098	RACK, 4-TIER 12” 6420-4
	66790-1	RACK, 3 TIER 18” 6424
9	69036	RESERVIOR COVER
	46908	1/4^TH PAN
10	48605	4” ADJUSTABLE LEG
NOT SHOWN	45989	DOOR SWITCH 6420, 6420-4
NOT SHOWN	67368	HEATER