45
Operation
Key switch
(Fig. 20/6)
It serves to switch the
electrical installations on
and off and to secure the
vehicle against unauthor-
ized use.
When the key switch is switched on
(lock position 1), the following appear in
the operating hour counter display (left-
hand operating panel, refer to para-
graph “Operating hour counter” in Sec-
tion 3.2.2):
1 Software version
Displayed for approx. 1 second.
Example:
2 Error code
of the last fault which occurred,
displayed for approx. 2 seconds.
The display serves as information
for the service technician so that the
fault can be cleared quickly. For an
overview of diagnostic codes, refer
to Section 3.5.1.
Example:
When a functional fault actually
occurs, an acoustic signal is
also issued and the red control
lamp on the alarm indicator
(Fig. 19/5) lights up.
3 Operating hour indicator
Continual display.
Example:
During operation, the dots flash in
the display.
4 Control digits (optional)
In the case of brand new vehicles, it
is possible that after switching on
the key switch, this display also
appears:
The control digits are for internal
control purposes. The display
changes to zero operating hours
after one hour at the latest. The
scrubber drier is ready for use while
this display appears. The alarm indi-
cator is activated.
