SECTION B. OPERATING INSTRUCTIONS
1.
IMPORTANCE OF LEVELING A REFRIGERATOR
In an absorption refrigerator system, ammonia is liquified
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.
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 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. 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.
2.
CONTROLS
Refrlgerators with Piezo lgnitors (RM2410):
A
-
ON/OFF Switch
B -
Thermostat Gas/Electric
C -
Safety Push-button
D -
Piezo
lgnitor
E -
Flame View Port
Refrigerators with Automatic Reignitors
(RM2510, RM2610
&
RM2810)
A -
ON/OFF Switch
B -
Thermostat, Gas/Electric
C -
Safety Push-button
FIG. 14
E
E
3.
n
A.
B.
C.
GAS OPERATION
Refrigerators with Piezo lgnitor
(RM2410)
To start the refrigerator, turn knob ‘A’ to the ‘GAS’
position. (See FIG. 14).
Turn the thermostat knob
‘B’
one quarter (1/4) of a
turn from the ‘OFF’ position. (See FIG. 14).
Push button
‘C’
in until it bottoms out
-
and hold.
While holding button
‘C’,
push button
‘D’
for the
piezo ignitor several times to light the burner. This
can be observed through the flame view port,
‘E',
on the refrigerator. (See FIG. 14).
D.
After the flame lights, continue to hold button
‘C’
for
an additional ten (10) seconds. Release the button
‘C’
and check the flame view port
‘E'
to make sure
the burner does not go out. If the burner goes out,
repeat the lighting procedure Steps A. through D.
E.
To shut off the refrigerator, turn Knob ‘A’ to the
‘OFF’ position.
9
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