User manual

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ABSORPTION COOLING SYSTEM
In an absorption refrigerator system, ammonia is liquefi ed in
the fi nned condenser coil at the top rear of the refrigerator.
The liquid ammonia then fl ows into the evaporator (inside the
freezer section) and is exposed to a circulating fl ow of hydro-
gen gas, which causes the ammonia to evaporate, creating a
cold condition in the freezer.
When starting this refrigerator for the very fi rst time, the cool-
ing cycle may require up to four hours of running time before
the cooling unit is fully operational. The tubing in the evapora-
tor section is specifi cally sloped to provide a continuous move-
ment of liquid ammonia, fl owing 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 fl oor 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.
Most LP gas appliances used in recreational vehi-
cles are vented to the outside of the vehicle. When
parked close to a gasoline pump, it is possible that
the gasoline fumes could enter this type of appliance
and ignite from the burner fl ame, causing a fi re or
an explosion.
For your safety, it is recommended that all LP gas
appliances which are vented to the outside should
be shut off when refueling.
AUTOMATIC ENERGY SELECTOR
CONTROL SYSTEM
The refrigerator is equipped with an automatic energy selector
control system. The user turns the refrigerator on, selects the
desired temperature and then, the refrigerator automatically
selects the most suitable energy source available (either 120 V
AC or LP gas operation). The system can be set by the user to
be fully automatic (AUTO mode is selected) or to operate on
LP gas only (AUTO mode is off).
The refrigerator controls will work down to 9.6 volt DC.
MODES OF OPERATION - AUTO AND GAS
AUTO mode
When the refrigerator is in AUTO mode, it automatically uses
the most effi cient energy source that is available for operation.
Should a more effi cient energy source become available during
operation, the refrigerator controls change from the current
energy source to the more effi cient energy source as follows:
AC operation (if 120V AC is available). AC operation is
only possible in AUTO mode.
GAS operation (if 120V AC is not available).
GAS mode (manual LP gas operation)
When AUTO mode is turned off, the refrigerator uses gas as
energy source - even if AC is available.
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REFRIGERATOR OVERVIEW
WARNING
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