Operation Manual

Gas system
8
82 Caravan - 12-11 - EN
The pressure gauge (Fig. 87,2) on the central regulator indicates the pressure in the
gas bottle, not the filling level of the gas bottle. The pressure gauge can be used to
test the impermeability of the gas bottle.
Only the electrical functions can be switched at the operating unit (Fig. 88). The
regulator taps on the gas bottles (Fig. 87,1 and 4) must be opened manually.
The central regulator provides a constant gas pressure, regardless of which gas
bottle is being drawn upon. The two indicator lamps on the operating unit show
which gas bottle can be used to provide gas. When both indicator lamps are illumi-
nated, the position of the knob on the switching regulator indicates which gas
bottle is currently being drawn upon.
Operating modes The Duomatic switching facility has two operating modes:
z Winter operation "On and heating"
z Summer operation "On"
Putting into operation:
 Open the regulator taps on the gas bottles (Fig. 87,1 and 4).
 Use the knob (Fig. 87,6) on the switching regulator (Fig. 87,5) to select the gas
bottle which is to be the primary source of gas (primary bottle).
Always turn the knob as far as it will go.
When the knob is in the red area, the gas is taken primarily from the gas bottle
with the central regulator (Fig. 87,3).
When the knob is in the green area, the gas is taken primarily from the gas
bottle with the switching regulator (Fig. 87,5).
 Switch on the Duomatic switching facility at the operating unit (Fig. 88).
To do so, set the rocker switch (Fig. 88,2) to winter operation "On and heating"
(Fig. 88,4) or to summer operation "On" (Fig. 88,6). Both gas pressure regulators
are now ventilated. The operating indicator (Fig. 88,3) lights up.
Switching off:
 Set the rocker switch (Fig. 88,2) to " " (Fig. 88,5). The operating indicator
(Fig. 88,3) goes out.
 Close the regulator taps on the gas bottles (Fig. 87,1 and 4).
Remote display The indicator lamps on the operating unit (Fig. 88) indicate in the vehicle interior
whether the gas bottles are ready for operation.
z Indicator lamp "A" (Fig. 88,1): Gas bottle on the central regulator
z Indicator lamp "B" (Fig. 88,7): Gas bottle on the switching regulator
Z In case of operation with only one gas bottle (e.g. in summer) connect the cen-
tral regulator to this gas bottle. Set the knob at the switching regulator to the
red area.