Kärcher BR 100 R Service Manual page 18

Technical features
2.5 Water system
Pin 4
Pin 2
Connecting plug (X99) of the metering valve (Y2)
1 Metering valve (Y2)
2 Connecting plug (X99) square, metering
valve (Y2)
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1
2
Pin 3
Pin 1
BR/BD 100/250 R BP / RI
Connecting plug (X99) square, metering
valve (Y2)
Battery voltage 24 volt (+).
Pin 1
Pin 2 24 volt if water pump ON.
0 volt if water pump OFF.
Earth 0 volt.
Pin 3
Pin 4 Control voltage for servo motor:
1.7-1.9 volt = metering valve maxi-
mum open.
3.1-3.3 volt = metering valve minimum
open
0 volt = metering valve closed.
Service Manual 08.2007