8
Most LP gas appliances used in recreation-
al vehicles 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 ame, CAUSING A FIRE OR
AN EXPLOSION.
FOR YOUR SAFETY, when refueling, shut
off all LP gas appliances which are vented
to the outside.
OPERATION INSTRUCTIONS
IMPORTANCE OF LEVELING A
REFRIGERATOR
In an absorption refrigerator system, ammonia is liqueed
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 specically sloped to provide a con-
tinuous movement of liquid ammonia, owing downward
by gravity through this section. If the refrigerator is oper-
ated when it is not level and the vehicle is not moving, liq-
uid ammonia will accumulate in sections of the evaporator
tubing. This will slow the circulation of hydrogen and am-
monia gas, or in severe cases, completely block it, result-
ing 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 ve-
hicle needs to be leveled only so it is comfortable to live in
(no noticeable sloping of oor 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 shutoff valve on the rear of the refrigerator. This
refrigerator is equipped with a control system which can
be set to automatically select either 120 volt AC or LP gas
operation (AUTO mode), or if desired LP gas only (GAS
mode) or DC volts (DC Heater) where applicable.
Auto Thermostat
In both AUTO mode and GAS mode operation, the tem-
perature is controlled by a factory preset temperature set-
ting. The refrigerator controls will work down to 9.6 volt
DC.
OPERATION
Adjustable Thermostat
A.
B.
C.
D.
E.
A continuous 12 volt DC supply must be available for
the electronic control to function.
Press the main power ON/OFF button (1) to the DOWN
position.
In AUTO mode, the AUTO lamp D will be illuminated.
The control system will automatically select between
AC and GAS operation with AC having priority. Tem-
perature is selected by the user.
In GAS mode operation, the GAS lamp C will be illu-
minated and only operate on LP only. Temperature is
selected by user.
In DC mode, the DC lamp A will be illuminated and the
unit will only operate on DC until DC volts drops below
9.6 VDC.
A.
B.
C.
D.
A continuous 12 volt DC supply must be available for
the electronic control to function.
Press the main power ON/OFF button (1) to
the DOWN position.
In AUTO mode, the AUTO lamp A will be illuminated.
The control system will automatically select between
AC and GAS operation with AC having priority. The
temperature is controlled by a factory preset tempera-
ture setting.
In GAS mode operation, no lamps will be illuminated
and the temperature is controlled by a factory preset
temperature setting.
OPERATION
Auto Thermostat
Auto Mode
Press the AUTO/GAS button 2 (Auto Thermostat) or but-
ton 3 (Adjustable Thermostat) to the DOWN position. The
AUTO mode indicator lamp (A auto or D adjustable ther-
mostat) will illuminate. If 120 volts AC is available, the
control system will select AC operation. If 120 volts AC is
not available, the control system will automatically switch
to GAS operation. Within 45 seconds the burner should
be ignited and operating normally. If the CHECK indicator
lamp (B auto or E adjustable thermostat) illuminates, the
control has failed to ignite the burner on GAS. To reset
when the CHECK indicator lamp, press the main power
ON/OFF button (1) to the OFF then ON position. Sys-
tems with the new lower control board are a three (3) try
system on gas. On the initial refrigerator start-up on gas
(120 volts AC is not available), it may take longer than 45
seconds to allow air to be purged from the gas line. If the
refrigerator has not been used for a long time or the LP
tanks have just been relled, air may be trapped in the
supply lines. To purge the air from the lines may require
resetting the main power ON/OFF button (1) three or four
times. If repeated attempts fail to start the LP gas opera-
tion, check to make sure that the LP gas supply tanks are
not empty and all manual shutoff valves in the lines are
open.
To Next Page
Loading...
Need help?
General
