Kärcher K 6.91 MD, Operating Instructions Manual

Page: 8 / 12

8
English
You can rectify minor faults yourself with
the help of the following overview.
If in doubt, please consult the authorized
customer service.

Risk of electric shock
Always switch off the appliance and pull out
the mains plug before care and mainte-
nance work.

Warning
Repair works may only be performed by the
authorized customer service.
Appliance does not start
Î Check whether the voltage indicated on
the type plate corresponds to the volt-
age of the socket.
Î Check the power cable for damage.
Pressure does not build up in the
appliance
Î Check the setting at the spray lance.
Î Evacuate air from the appliance: Switch
on the appliance when the high pres-
sure hose is not connected and allow it
to run until the water which discharges
from the high pressure outlet is free of
bubbles. Then connect the high pres-
sure hose again.
Î Clean the fine filter in the water supply
connection: this can be easily removed
using flat-nose pliers.
Î Check all supply lines to the high pres-
sure pump for leaks or blockages.
Strong pressure fluctuations
Î Clean the high-pressure nozzle: Re-
move dirt and debris from the nozzle
bore with a needle and rinse through
with water towards the front.
Î Check the volume of incoming water.
High pressure pump leaking
Î
Slight leakage from the high pressure
pump is normal. If the leakage increases
contact the authorized customer service.
No detergent infeed
Î Select the low-pressure setting (Mix) for
the spray lance with Vario Power noz-
zle.
Î Clean the filter of the detergent suction
hose.
Î
Check the detergent suction hose for
kinks.
Special accessories expand the possibili-
ties of using your appliance. Please contact
your Kärcher dealer for further information.
Troubleshooting
Special accessories
Specifications
Power connection
Voltage (1~50 Hz) 230-240 V
Connected load 2,5 kW
Mains fuse (slow-blow) 13 A
Maximum allowed net
impedance 0.388
+j0.243
Ω
Ω
Protective class I
Schutzgrad IP X5
Water connection
Max. feed temperature 60 °C
Min. feed volume 10 I/min
Max. feed pressure 0,6 MPa
Performance data
Working pressure 13 MPa
Max. permissible pressure 14 MPa
Water flow rate 8,8 I/min
Detergent flow rate 0,2 I/min
Recoil force of trigger gun 20 N
Hand-arm vibration
(ISO 5349) 1,3 m/s
2
Sound pressure level
L
pA
(EN60704-1)
73 dB(A)
Sound power level
L
WA
(2000/14/EG)
87 dB(A)
Dimensions
Length 349 mm
Width 346 mm
Height 869 mm
Weight 16,8 kg