Operation Manual

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6 Caravan - 02-08 - DET-0030-07E
N
Gas system
8
The manometer (Fig. 103,2) on the central regulator indicates the pressure in
the gas bottle, not the filling level of the gas bottle. The manometer can be
used to test the impermeability of the gas bottle.
Only the electrical functions can be switched at the operating unit (Fig. 104).
The regulator taps on the gas bottles (Fig. 103,1 and 4) must be opened man-
ually.
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 illuminated, 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:
Winter operation "On and heating"
Summer operation "On"
Putting into operation:
Open the regulator taps on the gas bottles (Fig. 103,1 and 4).
Use the knob (Fig. 103,6) on the switching regulator (Fig. 103,5) 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. 103,3).
When the knob is in the green area, the gas is taken primarily from the gas
bottle with the switching regulator (Fig. 103,5).
Switch on the Duomatic switching facility at the operating unit (Fig. 104).
To do so, set the rocker switch (Fig. 104,2) to winter operation "On and
heating" (Fig. 104,4) or to summer operation "On" (Fig. 104,6). Both gas
pressure regulators are now ventilated. The operating indicator
(Fig. 104,3) lights up.
Switching off:
Set the rocker switch (Fig. 104,2) to " " (Fig. 104,5). The operating indi-
cator (Fig. 104,3) goes out.
Close the regulator taps on the gas bottles (Fig. 103,1 and 4).
Remote display The indicator lamps on the operating unit (Fig. 104) indicate in the vehicle inte-
rior whether the gas bottles are ready for operation.
Indicator lamp "A" (Fig. 104,1): Gas bottle on the central regulator
Indicator lamp "B" (Fig. 104,7): Gas bottle on the switching regulator
Changing gas bottles If an indicator lamp goes out during operation, this signifies that the corre-
sponding gas bottle is empty and must be replaced. The reserve bottle con-
tinues supplying the gas appliances with gas.
When operating with only one gas bottle (e.g. during the summer) connect
the central regulator to this bottle. Position the knob on the switching regu-
lator in the red area.
When changing gas bottles, do not smoke or create any open fire.