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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.

Machine 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 nozzle.

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) 220-240 V

Connected load

2,1 kW

Mains fuse (slow-blow)

13 A

Protective class

1,IPX5

Water connection

Max. feed temperature

40 °C

Min. feed volume

10 I/min

Max. feed pressure

0,6 MPa

Performance data

Working pressure

12,5 MPa

Max. permissible pressure

13 MPa

Water flow rate

7,5 I/min

Detergent flow rate

0,2 I/min

Recoil force of handgun

18 N

Hand-arm vibration 
(ISO 5349)

1,3 m/s

2

Sound pressure level 
Lpa (EN60704-1)

74 dB(A)

Sound power level 
Lwa (2000/14/EG)

89 dB(A)

Dimensions

Length

349 mm

Width

346 mm

Height

869 mm

Weight

15,2 kg

Summary of Contents for K 5.91 MD

Page 1: ...Operating Instructions Before first use of the unit read these operating instructions and act in accordance with them K 5 91 MD 5 961 802 0 03 06...

Page 2: ...2 Assembly see page 10...

Page 3: ...pplicable in each country have been published by our respective national distributors We will re pair possible faults on your unit free of charge within the warranty period insofar as the faults are c...

Page 4: ...t thus generated is highly inflammable explosive and poi sonous Do not use acetone undiluted acids and solvents as they are aggres sive towards the materials from which the appliance is made Warning C...

Page 5: ...The voltage must correspond with the type plate on the appliance The minimum fuse rating required at the socket outlet is 13 A slow blow To avoid accidents due to electrical faults we recommend the u...

Page 6: ...n hose with integrated fil ter should be used instead special ac cessory and suspended inside the water butt Remove air from appliance before oper ation Switch on the appliance when the high pressure...

Page 7: ...ntil water runs clear Release the lever on the handgun Set the appliance switch to 0 OFF Turn off tap Press the lever on the handgun to re lease any remaining pressure in the system Disconnect the app...

Page 8: ...e high pressure nozzle Re move dirt and debris from the nozzle bore with a needle and rinse through with water towards the front Check the volume of incoming water High pressure pump leaking Slight le...

Page 9: ...o circulation by us This declaration shall cease to be valid if the machine is modified without our prior approval Appropriate internal measures have been taken to ensure that the series appliances al...

Page 10: ...10 English Assembly...

Page 11: ...English 11 Spare Parts...

Page 12: ......

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