Operating Instructions; Importance Of Leveling Arefrigerator; Controls; Gas Operation - Dometic RGE400 Installation & Operating Instructions Manual

ImPORTANCE Of LEVELING A
REfRIGERATOR
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 cool-
ing 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, liquid ammonia will accumulate
in sections of the evaporator tubing. This will slow the circula-
tion of hydrogen and ammonia gas, or in severe cases, com-
pletely block it, resulting in a loss of cooling.
The refrigerator must be adjusted to a vertical position in both
directions. Use the feet on the refrigerator to adjust its position.

CONTROLS

The refrigerator can be run on either 120 volt AC or LP gas.
Changing between these modes of operation is carried out by
means of control buttons positioned as shown in the figure.
The energy selector (A) can be set at "ELEC" (120 volt AC),
"GAS" (LP gas) or "OFF". The refrigerator temperature is
controlled by a thermostat (b). Please note that the thermostat
has no "off" position.
The refrigerator is fitted with a safety device, which automati-
cally shuts off the supply of gas if the flame goes out. The
safety device can be opened manually by depressing knob (C).
The piezoelectric igniter discharges sparks over the burner
when the button (D) is pushed. In the flame viewer (E) you can
see a blue light when the flame is alight.

OPERATING INSTRUCTIONS

GAS OPERATION

1. To start the refrigerator, turn the knob (
"GAS" position.
2. Turn the thermostat knob (
C) in until it bottoms out - and hold.
3. Push button (
While holding button (C), push button (D) for the
piezo igniter several times to light the burner. This
can be observed through the flame view port (E).
4. After the flame lights, continue to hold the 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 1
through 4.
5. To shut off the refrigerator, turn the knob (
"OFF" position.
NOTE: After changing an LP tank, or after a long shut off
period, the gas line is likely to be filled with air. You may have
to repeat the lighting procedure several times to purge the air
out of the gas lines.

ELECTRIC OPERATION

1. Check to be sure that the power cord is properly con-
nected to the power supply.
2. Turn knob ( A) to the position marked "ELEC" for
120 volt AC operation.
3. Turn the thermostat knob (
4. To shut off the refrigerator, turn the knob (
"OFF" position.

ThERmOSTAT

The refrigerator is equipped with a thermostat that can be
adjusted by turning knob (b) to different setting to maintain the
desired cabinet temperature.
" • OFF" Setting of the Thermostat: In gas operation, the
thermostat closes its main valve and the burner runs continu-
ously at the bypass rate or pilot. In electric operation, the
contacts in the thermostat are open and the heating element
is off.
" • mAX" Setting of the Thermostat: In gas operation, the
thermostat allows the burner to remain on high flame con-
tinuously. In electric operation, the heating element is "ON"
continuously.
• The thermostat can be adjusted between "
"OFF" to obtain the desired cabinet temperature. The closer
the knob is to "mAX", the colder the cabinet temperature.
The closer the knob is to "OFF", the warmer the cabinet
temperature.
When the thermostat reaches the set temperature, it will cut the
burner back to bypass or, in electric operation, shut off the heat-
ing element. The setting of the thermostat is not critical, but we
recommend it be adjusted to maintain a dry frost on the cooling
fins. Adjust the thermostat knob closer to "mAX" when the
outside temperature becomes warm.
5
A) to the
b) to setting 4.
A) to the
b) to setting 4.
A) to the
mAX" and