Maintenance And Care; Troubleshooting - Kärcher K 3.77 M Betriebsanleitung

Maintenance and care

Danger
Turn off the appliance and remove the mains
plug prior to any care and maintenance work.
Maintenance
The appliance is maintenance-free.
Storage
Prior to longer periods of storage, e.g. in the
winter:
Completely drain all water from the appli-
ance: Switch the appliance on with de-
tached high-pressure hose and detached
water supply (max. 1 minute) and wait,
until no more water exits at the high-pres-
sure connection. Turn off the appliance.
Remove filter from suction hose for deter-
gent and clean under running water.
Pull out the sieve in the water connection
using flat-nose pliers and clean under run-
ning water.
Frost protection
Caution
Protect the appliance and its accessories
against frost.
The appliance and its accessories can get de-
stroyed through frost if there are any water
residues in them. To avoid damage to them:
Store the appliance and the entire acces-
sories in a frost-safe room.
Spare parts
Use only original KÄRCHER spare parts. You
will find a list of spare parts at the end of these
operating instructions.

Troubleshooting

You can rectify minor faults yourself with the
help of the following overview.
If in doubt, please consult the authorized cus-
tomer service.
Danger
Turn off the appliance and remove the mains
plug prior to any care and maintenance 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 de-
vice will switch on.
Check whether the voltage indicated on
the type plate corresponds to the voltage
of the mains supply.
Check the mains connection cable for
damages.
Pressure does not build up in the appli-
ance
Check setting at the spray lance.
Appliance ventilation: Switch the appliance
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 connection
using flat-nose pliers and clean under run-
ning 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 appli-
ance switch to "I/ON".
Strong pressure fluctuations
Clean high-pressure nozzle: Remove dirt
and debris from the nozzle bore, using a
needle and rinse through with water from
the front.
Check water flow quantity.
Appliance is leaking
Slight leakage from the appliance pump is
normal. If the leakage increases contact
the authorized customer service.
No detergent infeed
Use spray lance with pressure regulation
(Vario Power).
Turn the spray lance to "Mix" position.
Clean the detergent suction hose filter.
Check the detergent suction hose for
kinks.
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