Operating instructions

8
ELECTRICAL CONNECTION
120 Volts AC Connection
The refrigerator is equipped with a three-prong (ground-
ing) plug for your protection against shock hazards and
should be plugged directly into a properly grounded
three-prong receptacle. DO NOT cut or remove the
grounding prong from this plug. The free length of the
cord is 2 feet and therefore recommended that the re-
ceptacle be located to the left side of the refrigerator
(viewed from the rear) and approximately 6 inches from
the floor (see FIG. 11). This allows easy access through
the vent door. The cord should be routed to avoid direct
contact with the burner cover, flue cover or any other
components that could damage the cord insulation.
12 Volts DC Connection
3-way refrigerator model
The 3-way refrigerator model RM 2453, has one termi-
nal block marked “12 Volts DC heater”, located on the
back of the refrigerator cabinet. (See FIG. 1).
The refrigerator must be connected to the battery circuit
with two wires of adequate capacity to avoid voltage drop.
The wire gauge should be chosen with consideration to
the wire length in accordance with the table below.
The 12 volt DC circuit must be fused. Max. fuse size is
20 amps for RM 2453.
Correct polarity must be observed when connecting to
the DC supply.
DO NOT use the chassis or vehicle frame as one of the
conductors. Connect two wires at the refrigerator and
route to the DC supply.
The refrigerator will draw 15 amps at 12 volt DC.
MAXIMUM TOTAL CONDUCTOR WIRE LENGTH
(in feet and meters)
RM 2453
6”
120 Volt AC
receptacle
FIG. 11
Wire length AWG
17 ft.
10 AWG
5 m
27 ft.
8 AWG
8 m
The connections must be clean, tight and free from cor-
rosion. If not, a resulting voltage drop will cause a de-
creased cooling capacity.
Battery
Refrigerator
Switch key
Relay
Breaker
point
Ignition
coil
DO NOT operate the refrigerator on 12 volt when
the vehicle is parked. The amperage draw of the
12-volt DC heating element can discharge a bat-
tery in a very short time. The installation of a 12-
volt DC operated refrigerator requires a relay to
be installed on the tow vehicle or in the cara-
van. The relay will automatically shut off the 12
volt DC power to the refrigerator when the igni-
tion is turned off. (See FIG. below).
! CAUTION