Dometic
®
MANUAL
Refrigerators
57
5E. AC VOLTAGE REQUIREMENTS
The refrigerator is a 120 volt AC, 60 Hz appliance. The
proper operating range is 100 to 132 volts. Check the
AC volts at the receptacle where the refrigerator is
attached. If voltage is outside of the proper operating
range, correct the power source problem.
If voltage drops below 100 volts, cooling efficiency will
decrease with voltage decrease. The refrigerator will not
switch to another mode of operation until all AC power
is lost.
The refrigerator is equipped with a three-prong (grounded)
plug for 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 power cord should be routed to avoid
direct contact with the burner cover, flue cover or manual
gas shutoff valve knob. The free length of the cord is two
feet and therefore recommended that the receptacle be
located to the left side of the refrigerator (viewed from the
rear) and approximately six inches from the floor. This
allows easy access through the vent door.
6E. AC COMPONENTS
HEATING ELEMENT
The heating element is designed to deliver a predeter-
mined amount of heat to the cooling
unit. To check a heating element, re-
move the heater leads from the
lower circuit board and
measure for proper re- sis-
tance across the two
leads with a properly cali-
brated ohm meter. This
check is to be done with the
heating element at room tem-
perature.
For values, refer to the TECHNICAL DATA section.
120 Volt AC
Receptacle
7E. DC VOLTAGE REQUIREMENTS
For the refrigerator to operate on any mode, DC voltage
must be supplied to the terminals at the rear of the
refrigerator.
Clean Direct Current (DC) power is mandatory for high-
tech circuits to operate as designed. The sources for
DC power are a battery and a converter.
A battery will provide straight line DC power, but ex-
tended operation will require recharging of the battery
by the converter or the alternator.
The converter and alternator produce DC power by a
series of diodes that rectify alternating current to DC. A
battery or capacitors can be used to clean up the AC
ripple that is present after AC voltage has been rectified.
AC ripple can be measured by a digital voltmeter set on
the AC scale at the main terminal block connections. Six
volts AC or less is acceptable.
NOTE: A brief interruption of the DC power supply while
refrigerator is operating on gas can cause a check light;
for example:
Turning the refrigerator OFF–ON while operating in the
gas mode can cause a check light.
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