Maintenance And Care; Frost Protection; Troubleshooting; Spare Parts - Kärcher K 3.99 M Operating Instructions Manual

Maintenance and care

Danger
Turn off the appliance and remove the
mains plug prior to any care and mainte-
nance 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 ap-
pliance: Switch the appliance on with
detached high-pressure hose and de-
tached water supply (max. 1 minute)
and wait, until no more water exits at the
high-pressure connection. Turn off the
appliance.
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.

Frost protection

Caution
Protect the appliance and its accessories
against frost.
The appliance and its accessories can get
destroyed through frost if there are any wa-
ter residues in them. To avoid damage to
them:
Store the appliance and the entire ac-
cessories 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.
8
English

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
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 appli-
ance
Check setting at the spray lance.
Appliance ventilation: Switch the appli-
ance on with the high-pressure hose
detached and operate until the water
flows through the high-pressure con-
nection without bubbles. Switch off ap-
pliance 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".
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.