Troubleshooting - Kärcher K 3.550 Operating Instructions Manual

Troubleshooting

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.
Appliance is not running
 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.
Pressure does not build up in the
appliance
 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.
Appliance does not start, motor
hums
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".
10 English
Strong pressure fluctuations
 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.
Appliance is leaking
 Slight leakage from the appliance pump
is normal. If the leakage increases con-
tact the authorized customer service.
No detergent infeed
 Use spray lance with pressure regula-
tion (Vario Power).
Turn the spray lance to "Mix" position.
 Check the settings at the dosage regu-
lator for detergent.
 Check whether the Plug 'n' Clean deter-
gent bottle is placed into the detergent
connection facing down.
 Check the detergent suction hose for
kinks.