Operation Manual

8
3C
aravan - 11-06 - DET-0030-05EN
Gas system
8
The external gas connection (Fig. 92) is located at the front right.
Connect the external gas device to the connection point (Fig. 92,1).
Open the gas isolator tap (Fig. 92,2).
8.7 Duomatic switching facility
The Duomatic is an automatic switching facility with a remote display for a two-
bottle gas system. The Duomatic switching facility automatically switches gas
supply from the primary bottle to the reserve bottle as soon as the primary
bottle is either empty or no longer ready for operation. The gas appliances may
still continue operation. The Duomatic switching facility is suitable for all com-
mercial gas bottles from 3 kg to 33 kg.
Construction of the unit The Duomatic switching facility consists of a central regulator (Fig. 93,3) and
a switching regulator (Fig. 93,5). The knob (Fig. 93,6) on the switching regu-
lator 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.
Fig. 92 External gas connection, gas
isolator tap closed
Do not use the switching facility in closed spaces.
Also read the manufacturer's instruction manual.
Fig. 93 Duomatic switching facility Fig. 94 Operating unit