Care And Service; Maintenance Work - Kärcher HDS 9/20-4 Classic Originalbetriebsanleitung

Do not use an slinging chains.
Secure the lifting gear against unintentional unhooking
of the load.
Remove the spray lance with high-pressure gun and
other loose objects before transporting by crane.
Do not transport any objects on the device during the
lifting operation.
Do not stand under the suspended load.
Ensure that no persons are in the hazard zones of the
crane.
Do not leave the device handing unattended on the
crane.
1. Fasten the lifting device to the holders for crane
transport of the device.
Illustration C
Storage
CAUTION
Failure to observe the weight
Risk of injury and damage
Be aware of the weight of the device during storage.

Care and service

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.
1. Close the water inlet.
2. Open the high-pressure gun.
3. Switch on the pump with the power switch and let it
run for 5-10 seconds.
4. Close the high-pressure gun.
5. Set the trigger to "0/OFF".
6. Only pull the mains plug out of the socket only when
your hands are dry.
7. Remove the water connection.
8. Actuate the high-pressure gun until the device is
completely depressurised.
9. Secure the high-pressure gun by folding out the
locking catch and engaging it.
10. Allow the device to cool down.
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
Weekly
ATTENTION
Milky oil
Device damage
If the oil is milky, inform authorized Customer Service
immediately.
1. Clean the fine filter.
2. Clean the fuel strainer.
3. Clean the fuel prefilter.
4. Clean the fuel filter.
5. Check the oil level.
16
1. Clean the sieve in the water shortage safeguard.
Every 500 operating hours, at least annually
1. Change the oil.
2. Descale the device.
3. Have the device maintained by Customer Service.

Maintenance work

Cleaning the fine filter
1. Depressurise the device.
2. Unscrew the fine filter on the pump head.
3. Dismantle the fine filter and take out the filter inlay.
4. Clean the filter inlay with clean water or compressed
air.
5. Assemble in the reverse order.
Cleaning the fuel sieve
1. Knock out the fuel sieve. Do not allow fuel to enter
the environment.
Cleaning the fuel prefilter
1. Pull the rubber cap out of the fuel tank.
2. Clean the fuel prefilter.
3. Put the rubber cover back in place.
1. Remove the fuel filter.
2. Clean the fuel filter.
3. Remount the fuel filter.
Cleaning the sieve in the water shortage safeguard
1. Depressurise the device.
2. Lever out the fastening clip and pull out the hose
(soft damping system) of the water shortage safe-
guard.
3. Remove the sieve.
Note
If necessary, screw in the M8 screw approx. 5 mm and
use this to pull out the sieve.
4. Clean the sieve in water.
5. Slide in the sieve.
6. Push the hose nipple all the way into the water
shortage safeguard and secure it with the fastening
clip.
Cleaning the fuel tank
1. Pull the rubber cap out of the fuel tank.
2. Unscrew the retainer and remove the fuel tank.
3. Rinse the fuel tank.
4. Reinstall the fuel tank and attach the retainer.
5. Put the rubber cover back in place.
See the "Technical data" section for the oil filling quanti-
ty and type.
1. Provide a catch pan for approx. 0.5 litre of oil.
2. Loosen the oil drain plug.
3. Drain the oil into the catch pan.
Note
Dispose of the old oil in an environmentally friendly
manner or hand it over to an authorised collection point.
4. Retighten the oil drain plug, torque 20-25 Nm.
5. Unscrew the oil filler plug.
6. Slowly fill with new oil until the level is in the middle
of the oil level display. The air bubbles must be able
to escape.
7. Screw in the oil filler plug.
English
Monthly
Clean the fuel filter
Changing oil