Refrigerator Overview; Features; Absorption.cooling.system; Automatic.defrosting.control.system - Dometic NEA1402 User Manual

fEAtURES

• This side-by-side refrigerator-freezer has two compartments
with separate doors. The left one is a frozen food compart-
ment (the freezer) and the right one is a fresh food com-
partment (the fridge). Both compartments have automatic
defrosting and independent temperature controls.
• NDA1402: 2-way power option. The cooling system may
use either 120V AC or LP gas as energy source for the cool-
ing. Energy selection is made either automatically or manu-
ally (forced to gas).
NEA1402: All-electric operation.
• Models equipped with ice dispenser or both ice and water
dispenser: In order to make serving water and ice easier,
the refrigerator is equipped with a dispenser for ice cubes
and chilled water through the door. Without having to open
the freezer it provides water as well as crushed or cubed ice
right into the cup.
• Climate control cooling system.
• Digital controls show current temps in both compartments.
• Vacuum insulated panels increase interior storage space.
• Automatic front frame heater prevents condensation from
forming on exterior cabinet.
• Flexible storage options.
AbSoRptioN cooLiNg SyStEM
In an absorption refrigerator system, ammonia is liquefied in
the finned condenser coil at the top rear of the refrigerator.
The liquid ammonia then flows into the evaporator (inside the
freezer section) and is exposed to a circulating flow of hydro-
gen gas, which causes the ammonia to evaporate, creating a
cold condition in the freezer.
When starting this refrigerator for the very first
time, the cooling cycle may require up to four
hours of running time before the cooling unit is
fully operational.
The tubing in the evaporator section is specifically sloped to
provide a continuous movement of liquid ammonia, flowing
downward by gravity through this section.
LEvELiNg thE REfRigERAtoR
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 floor or walls).
Any time the vehicle is parked for several hours with the refrig-
erator operating, the vehicle should be leveled to prevent this
loss of cooling.
If the refrigerator is operated when it is not level and the vehi-
cle is not moving, liquid ammonia will accumulate in sections
of the evaporator tubing. This will slow the circulation of hy-
drogen 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 vehicle will pass to either
side of level, keeping the liquid ammonia from accumulating in
the evaporator tubing.

REfRigERAtoR ovERviEw

– 4 –
Model shown with ice and water dispenser
AUtoMAtic DEfRoStiNg coNtRoL SyStEM
This refrigerator is equipped with an automatic defrosting
control system. The defrost system will automatically carry out
defrost in frozen food and fresh food compartment once per 24
hours. To be able to control the performance of the defrost in-
tervals the system is equipped with a built in defrost timer. The
timer has to be set to local or Central American time at the very
first start up of the refrigerator or when the 12V DC supply has
been disconnected for a longer period of time. A message on
the LED display panel will alert when the defrost timer needs
to be set.
NDA1402 - AUtoMAtic ENERgy SELEctoR
SyStEM
This refrigerator is equipped with an automatic energy selector
system which automatically selects the most suitable energy
source that is available, either 120 V AC or LP gas operation.
The system can be set by the user to be fully automatic, or to
operate on LP gas only.
! WARNING
FIRE OR EXPLOSION HAZARD. When refu-
eling or parked near gasoline pumps, shut off all
LP gas appliances. Failure to heed this warning
could cause a fire or explosion resulting in death
or severe personal injury.