Kärcher HDS 8/20 De Mode D'emploi page 22

Storage
CAUTION
Failure to observe the weight
Risk of injury and damage
Be aware of the weight of the device during storage.
Frost protection
ATTENTION
Frost
Destruction of the device through freezing water
Drain all water from the device.
Store the device in a frost-free location.
If frost-free storage is not possible:
1. Drain the water.
2. Pump commonly available anti-freeze through the
device.
Care and service
DANGER
Danger due to device inadvertently starting up
Risk of injury
Disconnect the fuel supply prior to all work on the de-
vice.
CAUTION
Hot surfaces
Risk of injury
Allow the device to cool down prior to all work.
Note
Observe the information on care and service in the orig-
inal instructions for the motor.
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
Before every use
ATTENTION
Milky oil
Device damage
If the oil is milky, inform authorized Customer Service
immediately.
1. Check the oil level of the high-pressure pump (see
chapter Check the oil level in the high-pressure
pump).
Weekly
1. Clean the water filter (see chapter Cleaning the wa-
ter filter).
2. Check the fuel filter and replace it if necessary.
Half-yearly
1. Check the booster heater (see chapter Checking
the booster heater).
2. Clean the sieve in the safety block (see chapter
Cleaning the sieve in the safety block).
3. Unscrew the high-pressure hose from the water out-
let. If there is a clear, white layer of lime in the water
outlet, descale the device. If there is a thick layer of
lime, descale frequently.
22
Every six months or as required
1. Drain the fuel tank.
2. Clean the fuel tank.
3. Clean the fuel filter.
4. Clean the fuel nozzle.
5. Clean the heating coil.
a Desulphurise the heating coil.
b Remove soot from the heating coil.
6. Change the oil in the high-pressure pump.
Every 500 operating hours, at least annually
 Have the device serviced by the authorized Custom-
er Service.
Maintenance work
Cleaning the water filter
1. Shut off the water inlet.
2. Unscrew the filter cup.
Illustration I
Water filter
1
Filter insert
2
Filter chamber
3
3. Pull the filter insert downwards and off.
4. Clean the filter insert and filter cup.
5. Re-install the filter insert.
6. Screw on the filter cup again and tighten.
Checking the booster heater
1. Disassemble the burner insert.
2. Clean the burner.
3. Clean the ignition electrodes or replace them, if nec-
essary.
4. Check the electrode gap.
Adjust the electrode gap if necessary.
Cleaning the sieve in the safety block
1. Open the high-pressure gun until the device is com-
pletely depressurised.
2. Pull out the securing clip.
3. Pull the hose section out of the safety block.
4. Pull the sieve out of the safety block.
5. Clean the sieve under running water.
6. Mount the components in the reverse order.
Replacing the oil in the high-pressure pump
For the oil type and filling quantity see chapter Techni-
cal data.
1. Provide a catch pan for at least 1 litre of oil.
2. Unscrew the oil drain plug.
3. Drain the oil into the catch pan.
4. Screw in the oil drain plug.
5. Slowly fill with new oil until the middle of the oil level
indication is reached. Air bubbles must be able to
escape.
Descaling the device
If deposits accumulate in the pipelines, this will increase
the flow resistance and the motor load will get too high.
DANGER
Flammable gases
Risk of explosion
Do not smoke during the descaling process.
Ensure good ventilation.
English