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9
OPERATING
INSTRUCTIONS
IMPORTANCE OF LEVELING A
REFRIGERATOR
In an absorption refrigerator system, ammonia is lique-
fied 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 hydrogen 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. If the
refrigerator is operated when it is not level and the ve-
hicle is not moving, liquid ammonia will accumulate in
sections of the evaporator tubing. This will slow the cir-
culation of hydrogen and ammonia gas, or in severe
cases, completely block it, resulting in a loss of cooling.
Any time the vehicle is parked for several hours with the
refrigerator operating, the vehicle should be leveled to
prevent this loss of cooling. The vehicle needs to be
leveled only so it is comfortable to live in (no noticeable
sloping of floor or walls).
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.
OPERATION
Before starting the refrigerator, check that all the manual
gas valves are in the ON position. DO NOT forget the
manual shut off valve on the rear of the refrigerator see
FIG. 1.
This refrigerator is equipped with an automatic energy
selector system and an auto defrosting control system.
The energy selector system will automatically select 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 if desired, LP gas
only.
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 de-
frost intervals the system is equipped with a built in real
time clock.
The clock has to be set to local time at the very first start
up of the refrigerator or when the 12-volt DC supply has
been disconnected for a longer period of time.
A message on the LED panel will alert when the clock
needs to be set.
Most LP gas appliances used in recreational ve-
hicles are vented to the outside of the vehicle.
When parked close to a gasoline pump, it is pos-
sible that the gasoline fumes could enter this
type of appliance and ignite from the burner
flame, CAUSING A FIRE OR AN EXPLOSION.
FOR YOUR SAFETY, when refueling, shut off all
LP gas appliances which are vented to the out-
side.
! WARNING
Overall Recess
Refrigerator Dimensions Dimensions
Model
Height Width Depth Height Width Depth
ABCHWD
inch 64-17/64 33-11/16 29-5/8 63-3/16 32-3/4 26-1/16
NDA 1402
mm 1632 855 752 1605 832 662
This method of installation and these clearances will give you adequate space for service and proper installation.
FIG. 11
Side view View from above
D
HA
D
W
C
B