Electrical Connections; 120 Volts Ac Electrical Connection; 12 Volts Dc Electrical Connection; Fuse Replacement - Norcold N180.3 Manual De Servicio

Electrical Connections

120 Volts AC Electrical Connection

The refrigerator is equipped with a three prong plug for protection
against shock hazard and must be connected into a recognized
three prong attachment receptacle. The length of cord is 24". The
cord must be routed so as not to come in contact with the burner
cover, flue pipe or any other component that could damage the
cord insulation.
WARNING Do not remove (cut) grounding plug from
!
the refrigerator AC power cord. Removal
ATTENTION
of this prong can result in a severe
electrical shock, as well as voiding the
refrigerator's electrical certification and
warranty.
■ Verify AC power cord is in a grounded three-prong receptacle.
■ Verify receptacle is within easy reach of the lower intake vent.
■ Verify power cord does not touch the burner cover, the flue pipe,
or any hot component that could damage the insulation of the
power cord.

12 Volts DC Electrical Connection

A 12 volt DC supply connection is only necessary if the refrigerator
is to be operated in DC mode. Both the AC and GAS modes
operate without a need for 12 volts. If the 12 volt connection is
required, verify:
■ The positive wire from the battery is connected to the terminal
marked "12V (+)" on the terminal block
■ The negative wire from the battery is connected to the terminal
marked "12V (-)" on the terminal block.
■ See wiring diagram at the end of this section. Both negative and
positive supply wires require 1/4" female quick connect termi-
nals.
See Fig. 7 for supply wire and fuse sizing. The wire size is
determined by the DC load (heater draw) and the distance the
current must travel from the battery. Should the wire size be too
small, a resulting voltage drop reduces the heater wattage and the
cooling capacity in the DC mode.
Distance from battery
0-20'
over 20'

Fig. 7 - Wiring Requirements

The refrigerator is designed to operate at full cooling capacity,
unlike other RV refrigerators which operate at a reduced capacity
to conserve battery drainage. The DC heating element has a
continuous current rating of 11.7 amps @ 12VDC.
www.norcold.com
Min. Wire Size Max. Fuse Size
12 AWG 20 AMP
10 AWG 20 AMP
■ Make sure an in-line fuse is installed on the DC positive wire,
as near the battery as possible, between the battery and the
terminal block of the refrigerator.
WARNING
!
ATTENTION

Fuse Replacement

In the AC circuit, use a 3 amp Type 3AG (1 1/4" x 1/4") replacement
fuse. In the DC circuit, use a 20 amp Type 3AG (1 1/4" x 1/4")
replacement fuse.

Preventative Maintenance

An annual maintenance check is strongly recommended:
■ Leak test the gas lines.
■ Check combustion seal; repair or replace, if necessary (Visual
check without removing the refrigerator.).
■ Inspect or clean the burner or burner orifice.
■ Check/adjust the electrode spark gap.
■ Insure the Thermocouple tip is clean and secure in the burner
bracket.
■ Check/adjust AC and DC voltages and LP gas supply pressure.
■ Check the Gas Safety Valve (see the "Test the Gas Safety
Valve" section of this manual).
■ Insure that area around the burner and controls is free of debris,
oily rags, etc.
■ Inspect the controls, piping and wiring to insure that they are in
good condition.
THESE MAINTENANCE PROCEDURES MUST BE PERFORMED BY A
QUALIFIED SERVICE PERSON.
NORCOLD CANNOT ACCEPT RESPONSIBILITY FOR REPAIRS,
ADJUSTMENT, OR MAINTENANCE PERFORMED BY OTHER THAN A
QUALIFIED DEALER OR SERVICE CENTER.

Gas Flame Appearance

While in propane gas operation, examine the appearance of the
gas flame:
■ Turn the gas control to the HI position.
■ Open the lower intake vent.

CAUTION

!
■ Open the burner box door and look at the gas flame:
■ The flame should be a darker blue inside and a lighter blue
outside and should be a constant and steady shape.
9
This in-line fuse is necessary for added
safety, even though the refrigerator has a
DC fuse in the control assembly.
The burner box door can be hot. Wear
gloves to avoid burns.
SERVICE MANUAL