Airstream 1980 Argosy Owner's Manual page 81

GAS OPERATION as follows: (See Fig. 3)
1. Turn the thermostat (A) to the maximum
cold or full clockwise position.
2. Turn the operational selector knob (6) so
that the knob indicator is pointing to the
word "GAS".
3. Depress and hold in the safety valve
button (C) while at the same time pushing
the ignitor button (D) at rapid intervals unitl
a flame is visible in the flame viewer (E).
On initial start up the lighting procedure
must be repeated until the air in the line
has been replaced by gas.
4. Continue holding the safety valve button
(C) in the depressed position for
approximately 1 5 to 30 seconds after the
flame is visible. Upon release the flame
should remain on and the unit is on gas
operation.
The gas regulator located in the manifold
system reduces the pressure from the propane
tank(s), usually 12 to 13 inch (2.98kPa-
3.23kPa) water column, to the Norcold
operating design pressure
. . .
8.5 inch
(2.1 1 kPa) water column for Models 776EG2
and 778EG2 and 10.5 inch (2.61 kPa) water
column on Model 774EG2. If the regulator is
not properly adjusted cooling performance will
be decreased. Adjustment of this regulator
should be done only by an authorized Service
Center.
The safety valve is designed so that should any
loss of flame occur through blow out or other
reasons it will interrupt the gas flow preventing
any danger of explosion. It is controlled by
means of a thermocouple that is position in the
flame. As long as a flame is detected by the
thermocouple the valve is held open. Upon
.flame failure, the valve closes shutting off the
gas flow.
Replacement of this valve or its thermocouple
should only be done by an authorized Service
Center.
The thermostat on the Norcold refrigerator
control both the gas and electric operation
thereby eliminating the necessity of resetting
each time a different power source is
employed.
At the maximum cold setting the thermostat
valve remains open and the gas flows at the
maximum pressure. At the minimum cold
setting the valve is closed and the mi nit will
operate at the bypass flow pressure of 2 to 3
inch (.498kPa
-
,747kPa) water column, or just
enough to maintain the burner at a low flame.
Between the maximum and minimum extremes
is a numbered section of.the thermostat dial
over which controlled temperatures may be
obtained. The higher the number the colder the
setting. Once the temperature in the
refrigerator cabinet has reached the point of
the thermostat setting the thermostat valve
closes and the unit operates on low fire until
once again the thermostat calls for cooling.
Replacement of the thermostat should only be
done by an authorized Service Center.
The pressure tap tee is a part of the manifold
assembly and serves as a point for servicemen
to monitor the gas pressure being introduced
into the burner.
ELECTRIC OPERATION ON AC
The refrigerator incorporates a single cartridge
heater having a resistance type element for AC
operation.
For AC OPERATION (See Fig. 3) set the
thermostat (A) to the maximum cold setting.
Turn the operational selector knob (B) so that
the knob indicator is pointing directly to the
word "ELECTRIC". The refrigerator should
now operate on AC.
IMPORTANT
If after a period of time, (usually 2 to 4 hours)
the refrigerator does not appear to be
functioning or a cooling performance loss is
noted check the following:
1 . Make sure the AC supply cord is plugged
into the electrical outlet provided and that
the vehicle is connected to the proper
voltage and frequently supply of 120
V.A.C., 60 Hertz.
2. Check that the circuit breakers are not
tripped.
3. Make sure the instructions governing
electrical operation have been properly
followed.
4. Check the thermostat and make certain
that it is the full clockwise or maximum
cold setting.
If after checking all of the above the refrigerator
does not cool have a service man check the
heater for continuity. This may be done with the
unit plugged in using a watt meter or when
unplugged using an ohmmeter.