Karmann-Mobil DEXTER 540, Operating Manual

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Fresh water system
EN 29
Switch on the fresh water pump on the control panel. Open all outlet points in the kitchen and bathroom.
Leave these open until the air has escaped from the system and the water flows from the outlets in a
continuous stream.
Note:
At temperatures below 7 °C, the “FrostControl” drain valve opens automatically to
drain the content of the boiler. So it can still be closed at these temperatures, the heating
has to be switched on to heat up the vehicle interior.
Draining the boiler
If the boiler is not used for an extended period of time, it has to be emptied completely in order to avoid
frost damage. Switch off the fresh water pump on the control panel and open all outlet points in the
kitchen and bathroom.
Turn the rotary knob of (1) the drain valve (Frost Control) by 90° until it latches. The push-button (3) is
released from the latched position and the drain valve opens.
The water from the boiler is now drained to the outside through the drain valve. Place a bucket under the
draining port (4) to ensure that the boiler has been drained completely (approx. 10 litres).
Fully draining the cold and hot water
See “Laying up for winter”.
Waste water tank
The waste water tank is located underneath the vehicle. This is where the used water is collected. The
waste water tank is fitted with a sensor. When the maximum fill level has been reached, the “R1” warning
signal on the control panel will light up automatically. If this happens, the waste water tank should be
drained at the next opportunity.
Warning signal for the waste water tank