Instruction manual

137T-Modell - 13/14 - Ausgabe 08/13 - 2354677 - BUE-0029-14EN
Electrical system
8
Volume of water/waste
water
The V/tank gauge is for the indication of the quantity of water or waste water.
With the V/tank gauge (Fig. 167,2), use the bottom scale. The gauge automat-
ically lights up as soon as a switch is pressed.
Displays:
 Press switch (Fig. 167,5) " ": The volume of water is displayed.
 Press switch (Fig. 167,6) " ": The volume of waste water is displayed.
13.3 V to 13.7 V Battery is being
charged (main
charge)
Occurs only brief-
ly after charging
Battery is being
charged (main
charge)
13.8 V to 14.4 V Battery being
charged (float
charge)
– Battery being
charged (float
charge)
Over 14.5 V Battery is over-
charged, defec-
tive alternator
control
– Battery is over-
charged, defec-
tive transformer/
rectifier
1)
The battery guard switches all the appliances off (at 10.5 V).
2)
If the voltage does not exceed this range for several hours.
Values for off-load voltage Charging condition of the battery
Less than 11 V Totally discharged
12.0 V 0 %
12.2 V 25 %
12.3 V 50 %
12.5 V 75 %
More than 12.8 V 100 %
Z Total discharge causes irreparable damage to the battery.
Z Measure the off-load voltage preferably several hours after the previous
charging (e.g. in the morning) and not directly after a current drain.
Battery voltage
(values during
operation)
Mobile operation
(vehicle moving,
no 230 V con-
nection)
Battery opera-
tion
(vehicle station-
ary, no 230 V
connection)
Power operation
(vehicle station-
ary, 230 V con-
nection)
Z Only read the tank levels briefly. Keeping the reading option on for a long
time can damage the transducers.