Dometic NDA1402 - Storage Procedure; Winter Operation; Preparing for Storage; Draining the Ice Maker

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SECTION 1
ABSORPTION COOLING SYSTEM
In an absorption refrigerator system, ammonia is liqueed
in the nned condenser coil at the top rear of the refrig-
erator. The liquid ammonia then ows into the evaporator
(inside the freezer section) and is exposed to a circulat-
ing ow of hydrogen gas, which causes the ammonia to
evaporate, creating a cold condition in the freezer. When
starting this refrigerator for the very rst time, the cooling
cycle may require up to four hours of running time be-
fore the cooling unit is fully operational. The tubing in the
evaporator section is specically sloped to provide a con-
tinuous movement of liquid ammonia, owing downward
by gravity through this section.
IMPORTANCE OF LEVELING
Leveling is one of the requirements for proper operation
with absorption refrigerators. To ensure proper leveling
the vehicle needs to be leveled so it is comfortable to live
in (no noticeable sloping of oor or walls). Any time the
vehicle is parked for several hours with the refrigerator
operating, the vehicle should be leveled to prevent this
loss of cooling. If the refrigerator is operated when it is
not level and the vehicle is not moving, liquid ammonia
will accumulate in sections of the evaporator tubing. This
will slow the circulation of hydrogen and ammonia gas, or
in severe cases, completely block it, resulting in a loss of
cooling. When the vehicle is moving, the leveling is not
critical, as the rolling and pitching movement of the ve-
hicle will pass to either side of level, keeping the liquid
ammonia from accumulating in the evaporator tubing.
AUTOMATIC DEFROSTING CONTROL SYS-
TEM
This refrigerator is equipped with an automatic defrost-
ing control system. The defrost system will automatical-
ly carry out a defrost of the frozen food and fresh food
compartments once every 24 hours. To be able to con-
trol the performance of the defrost intervals the system is
equipped with a built in real time clock. The clock has to
be set to local time at the very rst start up of the refrigera-
tor or when the 12 volt DC supply has been disconnected
for a long period of time. A message on the LED display
panel will alert when the clock needs to be set. It is also
recommended to reset the clock when entering different
time zones.
MODES OF COOLING
NDA1402: This refrigerator is equipped with an automatic
energy selector system which automatically selects the
most suitable energy source that is available, either 120
volt AC or LP gas operation. The system can be set by the
user to be fully automatic, or to operate on LP gas only.
NEA1402: All-electric operation.
REFRIGERATOR OVERVIEW
1. ON/OFF button.
Press this button to turn the refrigerator on and off.
2. STORE button. (NEA1402)
AUTO/STORE button. (NDA1402)
Combined energy mode selection and store button.
3. LED display panel.
4. SET button.
Combined temperature range and real time clock ad-
justment.
STORE FUNCTION
When setting the real time clock as well as the thermostat,
the desired setting is stored automatically after 5 sec. of
inactivity or by pressing the STORE button.
The most probable temperature of food in the fro-
•
zen food compartment.
The most probable temperature of food in the •
fresh food compartment.
AUTO mode indication (NDA1402)•
AC operation indication.•
GAS operation indication (NDA1402)•
Thermostat setting indication (temporary during •
setting).
Real time clock/ PM indication (temporary during •
setting).
Various status and error messages.•
LED DISPLAY PANEL
The LED panel displays
temperatures in the refrig-
erator, current modes of
operation and other useful
status messages.
The displayed temperature values reect the most prob-
able temperature of the food in the two compartments. A
delay function prevents rapid changes due to door open-
ings etc.
Panel Indications:
USING THE CONTROL FEATURES
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2
3
4
NEA1402
1
2
3
4
NDA1402