Operation Manual

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6 Caravan - 09-08 - DET-0030-08E
N
Gas system
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Construction of the unit The Duomatic switching facility consists of a central regulator (Fig. 103,3) and
a switching regulator (Fig. 103,5). The knob (Fig. 103,6) on the switching reg-
ulator is used to select which of the gas bottles is to be used as a primary bottle
and which is to be used as a reserve bottle.
Both regulators are equipped with a pressure controller and the regulator
defroster Eis-Ex. This prevents damage to the gas system during the winter
months.
The pressure gauge (Fig. 103,2) on the central regulator indicates the pres-
sure 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. 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.
Fig. 103 Duomatic switching facility Fig. 104 Operating unit
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.