Electrical Components; Fresh Food Compartment Light; Divider Heater; 12 Volt Dc Fans - Norcold 2118 Manual De Servicio

Electrical Connections, cont'd.
■ Use a minimum of 18AWG wire for supply wire and maximum 6
A in-line fuse for the DC power supply wires.
■ 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.
This in-line fuse is necessary for added
WARNING
!
safety, even though the refrigerator has a
ATTENTION
DC fuse in the control assembly.

Replacement Fuse Size

AC circuit AGC Series, Fast Acting,Glass Tube (1/4 in.x 1 -1/4 in.)
DC circuit Automotive Blade, Type APR-5A-Tan

Electrical Components

Fresh Food Compartment Light

The fresh food compartment light is turned on and off by door
operated switches. Each switch is located in the top of fresh food
compartment above each door.

Divider Heater

The divider heater is permanently "foamed into" the divider be-
tween the freezer compartment and the fresh food compartment.
The divider heater warms this area to prevent condensation from
forming. Powering on the refrigerator automatically powers on the
divider heater. Power to the heater is continuously supplied by the
power board.

12 Volt DC Fans

12 volt DC fans increase ventilation of the cooling system. Two (2)
larger fans are located near the condenser on the rear of the cool-
ing system foam plug. The third smaller fan is located below the
absorber coils of the cooling system.
All of the fans are unidirectional. The larger fans each draw 0.430
amps @ 12 volts DC. The smaller fan draws 0.140 amps @ 12
volts DC. Fan resistance through the fan motor circuit is approxi-
mately 1.8 ohms.
The fans are controlled by a thermostatic switch.

Thermostatic Switch

The thermostatic switch [321] is located on the first condenser fin
[10] (See Fig. 7). Incoming +12 volt DC [322] is fed through the up-
per terminal of the thermostatic switch. The +12 volt DC out [323]
connects to the lower terminal of the thermostatic switch.
The switch turns the fans on and off. The fans come on when the
temperature of the first condenser fin is about 130° F (54.4° C) and
turn off at about 115° F (46°C).
NOTICE
If the vehicle has a roof exhaust vent,
you may need to remove the refrigerator
2118, 2118IM, 2118IMD Series
10
321
323

Fig. 7 - Thermostatic switch for fans.

Movable Door Seal

The flapper assembly [324] (See Fig. 8) is hinged onto the left hand
door [10] of the fresh food compartment. The flapper assembly pro-
vides the vertical sealing surface between the fresh food compart-
ment doors for their inboard gaskets.
The flapper is equipped with a 12 volt DC moisture reduction
heater. The heater is supplied power through a wire harness
foamed into the door.
The heater is turned on when spring pins, on the hinge side of the
door, make contact with the permanent contacts that are in the side
of the refrigerator cabinet. The left hand fresh food compartment
door must be fully closed to close the connection. Powering on the
refrigerator automatically energizes the flapper heater circuit.
Verify that the heater is operating by touching the exterior sur-
324

Fig. 8 - Movable door seal.

10
from the enclosure to test the thermostatic
switch. If the vehicle has an upper side-
wall exhaust vent, you are able to test the
thermostatic switch by removing the upper
sidewall vent.
322
10
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