Norcold NR740, NR751 Owner's Manual

12/24 VOLTS DC,120/240 VOLTS

AC REFRIGERATORS

INSTALLATION AND OWNER’S

MANUAL

Service Information

If service or parts are required, contact the nearest Norcold Service Center. To

nd an authorized Norcold Service Center near you, please telephone the Norcold

Customer Support Dept. at 800-543-1219 (option-1) or visit our web site at www.
norcold.com.

Norcold Customer Support Dept.
Telephone : [phone]
Fax : [phone]
Web Site: www.norcold.com

Model No. Serial No.

03/01/2013

Part No. 635991A

NORCOLD AC/DC Models - Two Year Limited Warranty

Norcold, Inc. warrants for a period of two (2) years from the date of purchase that

Norcold, Inc. will repair or replace its AC/DC refrigerators.

Limitations of Warranty

1. This warranty is the only warranty for Norcold AC/DC refrigerators. This warranty

does not cover glassware, electric light bulbs or replaceable fuses.

2. This warranty does not apply to refrigerators or component parts that have been

subjected to misuse, improper installation, abnormal service, transit damage,

recharging of cooling unit system, accident, re, improper repair, tampering or

abuse.

3. The duration of any implied warranty is limited to two (2) years.

4. Some states do not allow limitations on how long an implied warranty lasts, so the
above limitation may not apply to you.

Limitations of Remedy

1. The responsibility of Norcold under this or any warranty is limited to the repair or
replacement (at Norcold’s option) of any defective refrigerator or component part.

2. In no event and under no circumstances shall Norcold be responsible for
any other charge whatsoever, including but not limited to charges or claims

for labor, lost business, lost time, lost prots, loss of use, or any kind of

incidental or consequential damages, however denominated or described.

3. Some states do not allow for the exclusion or limitation of incidental or

consequential damages, so the above exclusion may not apply to you.

To obtain warranty service, contact Norcold Customer Service at [phone] or
visit our website at www.norcold.com.

Legal Rights

This warranty gives you specic legal rights, and you may have other legal rights which
vary from state to state.

2

Safety Awareness

Read this manual carefully and understand the contents before you install the

refrigerator.

Be aware of possible safety hazards when you see the safety alert symbol on the
refrigerator and in this manual. A signal word follows the safety alert symbol and
identies the danger of the hazard. Carefully read the descriptions of these signal
words to fully know their meanings. They are for your safety.

!

WARNING

!

CAUTION

This signal word means a hazard, which if ignored, can cause
dangerous personal injury, death, or much property damage.

This signal word means a hazard, which if ignored, can cause
small personal injury or much property damage.

Model No. and Serial No.

The model and serial number are on a label which is inside the refrigerator on the
left side and on the cover of this manual.

Operation

This refrigerator is made for refrigerating purposes and operates on a 12/24 volt DC

power supply or 120 volt (60 hertz) / 240 volt (50 hertz) AC power when installed as

written in this manual.

!

CAUTION

Never store combustible materials near the refrigerator. Storing
combustible materials near the refrigerator creates a safety
hazard and also decreases the ventilation of the cooling system
which decreases the refrigerator performance.

Do not touch the evaporator or other metal parts inside the
refrigerator cabinet with wet hands because they can freeze to
the refrigerator.

Always disconnect all power sources from the refrigerator when

doing routine maintenance. Have service work done only by a
qualied service technician.

The refrigerator temperature is controlled by a thermostat. Number “1” is the warmest
and number “5” is the coldest thermostat position. For efcient operation, change the
thermostat according to the types of food stored and the ambient temperature.

If you are not going to use the refrigerator for an extended period of time, put the
thermostat to the “OFF” position (full counterclockwise position).

3

Over Heating Shut-off Device Operation

Operating the refrigerator in high ambient temperatures can over heat the cooling unit and
cause premature failure of the compressor.

To protect the cooling unit from over heating, the refrigerator will automatically shut-off
when the temperature of the refrigerator power module is higher than approximately 100°
C (212°F).

The refrigerator will restart when the temperature of the refrigerator power module is lower

than approximately 80°C (176° F).

Cleaning and Defrosting

Defrosting

It is normal for frost to collect on the freezer plate inside the refrigerator. Excess frost

decreases the cooling performance of the refrigerator. Defrost the refrigerator as

necessary.

!

CAUTION

- Turn the thermostat to “OFF”.

- Remove all food from the refrigerator.

NOTICE

- Put dry towels (etc.) inside the refrigerator to absorb the excess water.

- Put trays of hot water in the freezer until the frost is melted.

- Empty the drip tray.

- Remove the wet towels (etc.) and dry the inside of the refrigerator

- Turn the thermostat to the desired setting.

- Put the drip tray and all food in the refrigerator.

Do not use sharp objects, a hair dryer, a heat gun, etc. to defrost
the refrigerator. Damage to the interior of the refrigerator can
occur.

Defrosting the refrigerator makes excess water inside the refrigerator.

Cleaning

A good time to clean the refrigerator is just after you defrost it.

Clean the inside of the refrigerator as often as necessary to avoid food odors:

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- Remove all food from the refrigerator.

NOTICE

- Wash the inside of the refrigerator and the door gasket with a solution of liquid dish

detergent and warm water.

- Rinse with clean water and dry.

- After cleaning, put a thin coating of petroleum jelly on the hinge side of the gasket to
keep it soft and to prevent it from rolling.

Do not use abrasive cleaners, chemicals, or scouring pads because
they can damage the inside of the refrigerator.

Battery Maintenance

Over cooling drains your battery

When the ambient temperature is between 70° and 90° F, keep the thermostat at the “3“
position to avoid an excessive drain of the battery. When making ice, or storing frozen
foods, turn the thermostat to the coldest setting “5“.

Maintain the battery

If the charge of your battery is not sufcient, the cooling performance of your refrigerator

decreases.

!

CAUTION

Check the Battery charge Level

Only use a “quick charger” on the battery if the thermostat is
turned to “OFF”.

A fully charged battery will have a specic gravity reading of between 1.260 and 1.280.
The battery voltage is best indicated when the refrigerator is “ON” and the battery charging
system is “OFF”. Charge the battery when the specic gravity reading is less than 1.200.

For your reference

The wiring diagram shown below is recommended for dual battery hookup (See

Art02373)

.

5

AC supply

Circuit

Battery

*Recommended source:
Sure Power Industries, Inc.
1-800-845-6269
www.Surepower.com

Art02373

Voltage Requirements

12.8 VDC / 24 VDC

Minimum (cut-out) ......................................................................... 10.9 VDC / 23.8 VDC

Restart (cut-in) ..............................................................................12.2 VDC / 25.2 VDC

Maximum ...................................................................................... 17.0 VDC / 31.5 VDC

Fuse.............................................................................................................. 15 A / 7.5 A

120 VAC / 240 VAC

Nominal .................................................................................100 / 240 VAC, 50 / 60 Hz

Minimum ............................................................................................................. 90 VAC

Maximum .......................................................................................................... 264 VAC

Installation

The refrigerator should be located and secured on a solid surface with no gap
between the bottom rails of the refrigerator and the supporting surface.

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This refrigerator is a built-in design, it needs to be installed into a dimensioned
cabinet before using.

Before installing the refrigerator into the opening, make sure the AC/DC supply
is properly connected. In many cases, the AC/DC supply can be connected from
outside the vehicle by means of the baggage or access door.

Measure the opening to determine if you have proper clearance for installation.
Additional insulation space around the refrigerator is not necessary.

Make sure that the enclosure is the correct size:

- Model NR740: 20.5 inches high x 15.25 inches wide x 17.75 inches deep.

- Model NR751: 20.5 inches high x 18.5 inches wide x 21 inches deep.

If the refrigerator has mounting

holes in the front metal ange,
put screws through the ange
(in four places) to securely

mount the refrigerator into the
opening (See Art02324).

If the refrigerator does not
have mounting holes in the

front metal ange, put screws

through the holes in the sides
of the cabinet liner (in four

places) to securely mount the

refrigerator into the opening.

Be sure the refrigerator is not
in direct sunlight or near a gas
stove, a heater, or other heat­generating appliances. Avoid

installing your refrigerator

close to warm water lines or warm air ducts.

holes in metal
flange (4 places)

holes in cabinet
liner (4 places)

Art02324

Your refrigerator was thoroughly cleaned before shipment from the factory. It is

advisable, however, to clean the interior once more before using. Wipe the interior with

a cloth and warm water. Then wipe with a dry cloth.

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Ventilation

Sufcient ventilation (airow) over the bottom mounted
condenser of the refrigerator is necessary for the
refrigerator to operate correctly. Cooler air goes into

one side of the front lower grill and passes over the
condenser. The air removes heat from the condenser
and the warmer air goes out through the other side of

the front lower grill. Make sure that the front lower grill
is not blocked so the air can easily pass through it (See

Art02325).

lower front grill

Art02325

!

CAUTION

If you do not make sure that the ventilation is correct, a

shortened refrigerator life expectancy, poor refrigeration,
continuous operation, accelerated battery discharge and a void
warranty will result.

Installation Options

Install a decorative door panel

NOTICE

1. Remove the door from the refrigerator by

removing the four screws that attach the door
hinge to the bottom of the refrigerator (See
Art02326).

2. Remove the panel retainer by removing the

three (3) screws that attach the panel retainer
(See Art02327).

The decorative door panel must be 0.9 mm or less in thickness.

door hinge

screws

Art02326

8

Art02327

Panel retainer

Screw

3. Gently pull the door panel out of the

Door latch

door (Art01895).

4. Push a new door panel into the door
slot.

Door panel

!

CAUTION

5. Put the panel retainer in the original
location and attach with three (3)
screws.

6. Put the door in the original location and tighten the four (4) screws.

Do not overtighten
the screws and bolts.

Art01895

Reverse the door swing:

1. Remove the door from the refrigerator by removing the four (4) screws that attach

the door hinge to the bottom of the refrigerator.

2. Open the door and pull it off of the top hinge pin.

3. Remove the three (3) screws that attach the
upper hinge (See Art02328).

4. Remove the three (3) screws that attach the
latch to the refrigerator.

5. Remove the hole plugs.

6. Attach the upper hinge and the door latch to
the opposite sides of the refrigerator. Put the

hole plugs into the empty holes.

7. Move the latch to the opposite side of the door
(See Art02329):

Plugs

Art02328

Upper hinge

- Remove the two (2) screws that attach the door handle assembly to the door.

- Carefully pull the door handle off of the handle pocket, so that you do not lose the

attached spring.

- Turn the door handle over and push it back onto the handle pocket.

- Reattach the door hadle assembly to the door with the two (2) screws.

- Remove the hinge hole plug and put it into the hole in the opposite end of the door.

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