Interrupting Operation; Maintenance And Care; High-Pressure Pump - Kärcher HD 901 B Bedienungsanleitung

– Observe the dosage and other instruc-
tions provided with these detergents.
– Use only those detergents approved by
the manufacturer of the appliance.
– Kärcher detergents ensure smooth func-
tioning. Please consult us or ask for our
catalogue or our detergent information
sheets.
Suspend end of suction hose in a con-
tainer filled with detergent.
Set nozzle to "CHEM".
Set dosing value for detergent to the de-
sired concentration.
Recommended cleaning method
– Loosen the dirt:
Spray detergent economically and let it work
for 1...5 minutes but do not let it dry up.
– Remove the dirt:
Spray off loosened dirt with the high-
pressure ray.
After operation with detergent
Set dosing value for detergent to "0".
Open the hand spray gun and rinse the
appliance for at least 1 minute.

Interrupting operation

Release the lever on the trigger gun.
Note
When the lever of the hand spray gun is re-
leased, the engine continues to run at zero
speed. The water thus circulates within the
pump and gets heated. When the cylinder
head at the pump has reached the maximum
permissible temperature (80 °C), the safety
thermostat at the cylinder head switches off
the engine. The appliance can be restarted
after being cooled down to below 50 °C.
Cooling can be hastened while using com-
pressed water from the water supply pipes:
Pull the lever of the hand spray gun for 2
- 3 minutes so that the circulating water
cools down the cylinder head.
Restart the engine.
Turn off the appliance.
After operating the water using saline water
(sea water), open the hand spray gun and
rinse the appliance for at least 2 - 3 minutes
using tap water.
Set the appliance switch at the engine to
OFF and close the fuel supply valve.
Shut off water supply.
Activate hand spray gun until device is
pressure-less.
Secure the hand spray gun using the
safety catch so that it doesn't open acci-
dentally.
Remove the water inlet hose from the
appliance.

Maintenance and care

You can sign with your dealer a contract for
regular safety inspection or even sign a
maintenance contract. Please take advice
on this matter.

High-pressure pump

Weekly
Check oil level.
Please contact Customer Service immedi-
ately if the oil is milky (water in oil).
Monthly
Clean the sieve in the water connection.
Clean filter at the detergent suck hose.
After 500 operating hours, at least annu-
ally.
Oil change:
Ready a catch bin for appr. 1 Liter oil.
Turn out the oil drain screw.
Drain the oil in a collection basin.
Dispose of old oil ecologically or turn it in
at a collection point.
Turn out the oil drain screw.
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English