Owner’s Manual 14
NOTE: The current draws are nominal values.
N304 models
AC Operation
240 volts AC
(216 volts min. - 264 volts max.)
Current Draw
0.75 Amps at 240 volts AC
DC Operation
12 volts DC
(11.5 volts min. - 15.4 volts max.)
Current Draw
12.0 Amps at 12 volts DC
14.0 Amps at 14 volts DC
N404 and N504 models
AC Operation
240 volts AC
(216 volts min. - 264 volts max.)
Current Draw
1.0 Amps at 240 volts AC
DC Operation
12 volts DC
(11.5 volts min. - 15.4 volts max.)
Current Draw
14.1 Amps at 12 volts DC
16.5 Amps at 14 volts DC
This refrigerator operates on both AC and DC electrical sources.
Operation out of these limits may damage the refrigerator’s
electrical circuit parts and will void the warranty.
WARNING:
The rear of the refrigerator cooling
system has hot surfaces and sharp surfaces that
can damage electrical wiring. Make sure that there
is a good clearance between all electrical wiring
and the cooling system of the refrigerator. Position
any electrical wiring within the refrigerator enclosure
opposite the burner side of the refrigerator. Do not
put any electrical wiring through the roof exhaust
vent. Failure to correctly position electrical wiring
can result in electrical shock or fire.
Connect the 240 volt AC supply:
WARNING:
Connect the AC power cord only to a
grounded three-prong power point. Do not remove
the earth pin from the power cord. Do not use a
two-prong adapter or an extension cord. Operation
of the refrigerator without correct ground can cause
dangerous electrical shock or death if you are
touching the metal parts of the refrigerator.
Put the AC power cord into a grounded three-prong power point:
- Make sure the power point is 100-150 mm above the floor
of the enclosure and is positioned within easy reach of the
lower intake vent.
- Make sure the power cord does not touch the burner cover,
the flue pipe, or any hot component that could damage the
insulation of the power cord.
Connect the Electrical Components
Connect the 12 volt DC supply (3-way models only):
As the distance from the vehicle battery to the refrigerator
increases, the correct wire size and fuse size also increases. If
the wire size is too small for the distance, a voltage drop occurs.
The voltage drop decreases the output of the system heater and
causes poor cooling performance.
1. Determine the min. wire size and the max. fuse size to use:
WARNING:
If you use an incorrect wire size and/
or fuse size, electrical fire can result.
- Measure the distance from the vehicle battery to the
refrigerator and use the following size wire and fuse:
Distance
Models
Min wire size
Fuse size
5 m
N304
4 mm²
20 Amp
N404/N504
4 mm²
30 Amp
8 m
N304
6 mm²
30 Amp
N404/N504
6 mm²
40 Amp
- If the wire is larger than the min. size, use the correct fuse
per local codes.
The wire connections must be clean, tight and free of corrosion.
If any of these items are not correct:
- A voltage drop to the refrigerator will occur.
- The voltage drop will reduce the cooling performance of the
refrigerator.
The terminals for connecting the DC power supply are marked
positive (+) and negative (-). Make sure that:
- Each DC power supply wire is attached to the correct polarity
terminal.
- The chassis or the vehicle frame is not used as one of the
conductors.
- The DC power supply wires including the fuses are routed
directly from the battery to the refrigerator.
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