7. Electronic control unit
7.1. KFAS control unit (industrial and
commercial vehicles)
7.1.1. Display and control elements (KFAS)
The piston pump unit with reservoir is operated via
a control screen ( Fig.29). The display and control
elements are explained in
Table18. Table20 contains an overview of the
display options of the three-digit LED display.
The control screen is protected against splashwater
and mechanical damage by a transparent plastic
cover. In order to operate the piston pump unit,
remove the cover using a screwdriver.
The layout of the control screen has changed since
2007. See Table18 for a comparison of the
display and control elements of the new control
screen with those of the old one.
Displays parameters, values, conditions, and fault messages
o Switch between programming mode and display mode.
o Select parameters and confirm values.
o Displays pending fault messages.