Operation Manual

9
6 Caravan - 09-08 - DET-0030-08E
N
Electrical system
9
When the transformer/rectifier is subject to a heavy load, the fitted charger
module reduces the charging current. This protects the charger from over-
heating. The transformer/rectifier is subject to a heavy load when e.g. an
empty living area battery is being charged, additional electrical appliances are
turned on and the ambient temperatures are high.
Position Depending on the model, the transformer/rectifier is situated either in the
bench or in the bedding box.
9.5.1 Battery selector switch
The battery selector switch is used to set the charger module in the trans-
former/rectifier to the type of living area battery installed in the vehicle ("lead
acid" or "dryfill" battery).
9.5.2 Charging the battery
During mobile operation, the alternator of the towing vehicle charges the living
area battery. If the engine of the towing vehicle is cut off, then the transformer/
rectifier disconnects the starter battery electrically from the living area battery
so that it is not possible to discharge the starter battery of the towing vehicle
by using 12 V living area appliances.
When the vehicle is connected to the 240 V power supply, the living area bat-
tery is charged by the transformer/rectifier.
9.6 Panel LT 109 (Power Pack SE)
Further information can be obtained from the separate instruction manual
"Transformer/rectifier".
If the battery selector switch is set incorrectly, there is the danger of the
formation of detonating (oxy-hydrogen gas). Danger of explosion!
Incorrect setting of the battery selector switch damages the living area bat-
tery.
The factory settings of the battery selector switch must not be changed.
The power supply unit is not used to charge the starter battery of the towing
vehicle.
Fig. 109 Panel LT 109
1 12 V main switch
2 12 V indicator lamp
3 Battery charging condition indicator
4 Rocker switch for battery display
5 Tank volume indicator
6 Rocker switch for tank level indicator