Care And Service; Troubleshooting Guide - Kärcher HD 9/20-4 S ST Classic Bedienungsanleitung

11. Pull the mains plug out of the socket only when your
hands are dry.
12. Store the appliance and accessories in an interior
space.

Care and service

DANGER
Inadvertently starting up device
Risk of injury, electric shock
Switch off the device immediately and unplug the mains
plug before performing work.
Note
Old oil may only be disposed of at designated collection
points. Please dispose of any old oil at these locations.
Polluting the environment with old oil is punishable by
law.
Safety inspection/maintenance contract
You can agree on regular safety inspections or close a
maintenance contract with your dealer. Please seek ad-
vice on this.
Maintenance intervals
Each time before use
 Check the mains plug, the mains cable and the ex-
tension cables for damage.
Have damaged parts replaced immediately by the
authorised Customer Service or a qualified electri-
cian.
 Check the high-pressure hose, high-pressure gun,
jet pipe and accessories for damage.
Replace damaged parts immediately.
 Check the device for leaks.
3 drops of water loss per minute are permissible.
Contact Customer Service in the case of more seri-
ous leaks.
Weekly
ATTENTION
Risk of damage due to water in the oil!
If the oil is milky, there is water in the oil, which damages
the high-pressure pump.
Do not operate the device with milky oil.
Contact Kärcher Service.
 Check the oil level of the high-pressure pump, see
chapter Checking / correcting the high-pressure
pump oil level.
 Clean the fine filter, see chapter Cleaning the fine
filter.
Every 500 operating hours, at least annually
 Have the device serviced by Customer Service.
 Change the high-pressure pump oil, see chapter
Change high pressure pump oil.
Cleaning the fine filter
1. Close the water inlet.
2. Depressurise the device, see chapter Ending oper-
ation.
3. Unscrew the union nut.
Illustration G
Fine filter housing
1
Fine filter
2
Connection nozzle
3
Union nut
4
4. Pull out the connection nozzle.
5. Pull the fine filter out of the fine filter housing.
6. Rinse the fine filter with clear water or blow it out
with compressed air.
7. Insert the fine filter into the filter housing.
8. Attach the connection nozzle.
9. Tighten the union nut hand-tight.
Change high pressure pump oil
ATTENTION
Risk of damage when draining the high-pressure
pump oil!
Draining the oil during operation damages the high-
pressure pump.
Do not unscrew the oil drain screw while the device is in
operation.
1. Set the power switch to "0/OFF".
WARNING
Risk of scalding!
The high-pressure pump oil can be very hot and cause
scalding.
Allow the device to cool down before draining the high-
pressure pump oil.
2. Allow the device to cool down.
3. Place a suitable container (oil-resistant, capacity
min. 1.5 l) under the oil drain screw.
The device must stand horizontally, see chapter At-
tach or set up the device.
Illustration H
Oil dipstick with breather valve
1
Oil level gauge
2
Oil drain screw
3
4. Unscrew the oil drain screw counter-clockwise using
a ring or socket spanner with a spanner.
5. Allow the high-pressure pump oil to drain complete-
ly.
6. Replace the sealing ring on the drain screw.
7. Turn the drain screw clockwise and tighten it.
8. Filling new oil, see chapter Checking / correcting
the high-pressure pump oil level.
9. Dispose of the old oil in accordance with the envi-
ronmental and local regulations.
10. Wash your hands thoroughly with soap and water
after each contact with oil.

Troubleshooting guide

DANGER
Inadvertently starting up device, touching live com-
ponents
Risk of injury, electric shock
Switch off the device before performing any work on the
device.
Remove the mains plug.
Have all checks and work on electrical parts performed
by a qualified electrician.
In case of any malfunctions not mentioned in this chap-
ter, contact the authorised Customer Service.
The device cannot be started
1. Check the mains cable for damage.
2. Check the mains voltage.
3. If the device overheats:
a Set the power switch to "0/OFF".
b Allow the device to cool for at least 15 minutes.
c Set the trigger to the "I/ON" position.
4. Contact Customer Service in the case of electrical
faults.
English 17