Karcher K 3.490 User Instruction - Maintenance and Care
English 17
Danger
Turn off the appliance and remove the
mains plug prior to any care and mainte-
nance work.
Prior to longer periods of storage, e.g. in
the winter:
Remove filter from suction hose for de-
tergent and clean under running water.
Pull out the sieve in the water connec-
tion using flat-nose pliers and clean un-
der running water.
The appliance is maintenance-free.
Use only original KÄRCHER spare parts.
You will find a list of spare parts at the end
of these operating instructions.
You can rectify minor faults yourself with
the help of the following overview.
If in doubt, please consult the authorized
customer service.
Danger
Turn off the appliance and remove the
mains plug prior to any care and mainte-
nance work.
Repair works may only be performed by the
authorized customer service.
Pull on the lever of the trigger gun; the
device will switch on.
Check whether the voltage indicated on
the type plate corresponds to the volt-
age of the mains supply.
Check the mains connection cable for
damages.
Check setting at the spray lance.
Appliance ventilation: Switch the appli-
ance on with the high-pressure hose
detached and operate (max. 2 minutes)
until the water exits the high-pressure
connection without bubbles. Switch off
appliance and reconnect high-pressure
hose.
Check the water supply.
Pull out the sieve in the water connec-
tion using flat-nose pliers and clean un-
der running water.
Cause: Voltage reduction due to weak
mains supply or when using an extension
cable.
When switching on, first pull the lever of
the trigger gun and then switch the ap-
pliance switch to "I/ON".
Clean high-pressure nozzle: Remove
dirt and debris from the nozzle bore, us-
ing a needle and rinse through with wa-
ter from the front.
Check water flow quantity.
Slight leakage from the appliance pump
is normal. If the leakage increases con-
tact the authorized customer service.
Use spray lance with pressure regula-
tion (Vario Power).
Turn the spray lance to "Mix" position.
Clean the detergent suction hose filter.
Check the detergent suction hose for
kinks.
Maintenance and care
Care
Maintenance
Spare parts
Troubleshooting
Appliance is not running
Pressure does not build up in the
appliance
Appliance does not start, motor
hums
Strong pressure fluctuations
Appliance is leaking
No detergent infeed