From Bottled Gas - Dometic
F400 Operating Instructions Manual

5.2. Operating from 12 Volt
vehicle battery
Make sure the voltage shown on the data plate of the
appliance matches the voltage of the vehicle battery
(12V).
In 12V operation, the appliance runs continuously
without temperature control.
The appliance is supplied with a matching pair of
12 Volt MALE + FEMALE plugs (see 9,2
connection to vehicle power source).
For 12V operation, make sure, if the engine is not
running, that the plug must be disconnected (see
fig. 7). Otherwise, the appliance will discharge the
vehicle battery when in operation.
5.3. Operating from bottled gas
Connection to the gas cylinder is described in
sections 9.3. and 9.4.
After opening the valve of the gas cylinder and
checking for gas leaks turn thermostat to maximum
position (Figure 4), press down the gas safety valve
hold it down for about 10 seconds and then, press the
piezo-ignition button (marked with a star) several times
in quick succession. If the flame does not ignite, repeat
the process. (Air in the appliance gas line prior to
connection to the gas cylinder must be purged. Only
then can the gas be lit.)
Ignition of the flame can be verified through the flame-
view opening (Figure 5). After you have the flame
alight keep the safety gas valve pressed down for a
further 10 seconds.
The thermostat should be set to maximum to get the
freezer function (-12°C). To use the cooling function
the thermostat should be set towards minimum,
depending on the ambient temperature, to avoid
freezing of the goods.
To stop the gas operation the valve of the gas cylinder
(or the pressure regulator) is the close.
6
Figure 3
Figure 4.
Figure 5.