Karcher HDS 801 B - Manual (Page 22)

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 Clean the sieve in the water connection.
 Check oil level of the high pressure
pump.
Caution
In case of lacteous oil inform Kärcher cus-
tomer service immediately
 Booster heater: Dismantle burner inlay;
clean burner and ignition electrodes;
check distance between electrodes; ad-
just if required or replace ignition elec-
trodes.
 Empty and clean the fuel tank.
 Clean the filter in front of the fuel pump
and fuel nozzle.
 Desulphurise the heating coil and re-
move soot from it.
 Change the oil in the high pressure
pump.
 Take out sieve.
 Clean sieve in water and reinstall.
Oil change:

Ready a catch bin for appr. 1 Liter oil.
 Turn out the oil drain screw.
 Drain the oil in a collection basin.
 Screw in the oil drain screw.
 Slowly fill in new oil until the "MAX"
marking on the oil container.
Note: Air pockets must be able to leak out.
For oil type refer to technical specifica-
tions.
Carry out maintenance tasks to the engine
according to the specifications provided in
the operating instructions of the engine
manufacturer.
The flow resistance is higher if there are de-
posits in the pipes; this increases the load
on the motor.
ƽ
Danger
Risk of explosion due to combustible gas-
es! Smoking strictly prohibited during de-
calcification. Ensure proper ventilation.
ƽ
Danger
Risk of burns injury on account of acid!
Wear protective glasses and protective
gloves.

Procedure:
According to statutory requirements, only
tested and approv approved boiler decrust-
ing agents may be used.
– RM 100 (Order No. 6.287-008) dis-
solves chalk and simple compounds of
chalk and detergents residues.
– RM 101 (Order No. 6.287-013) dis-
solves the deposits that cannot be dis-
solved using RM 100.
 Fill a 20 litre container with 15 l water.
 Add one litre of boiler decrusting agent.
 Connect the water hose directly to the
pump and hang in the other free end
into the container.
 Insert the connected spray pipe without
nozzle into the container.
 Start the engine according to the oper-
ating instructions of the engine manu-
facturer.
 Open the hand-spray gun and do not
close it during the decalcification process.
 Set the temperature regulator to work-
ing temperature of 40 °C.
 Let the appliance run till the working
temperature is reached.
 Switch off the appliance and let it stand
for 20 minutes. The hand-spray gun
must remain opened.
 Then pump out the machine until empty.
Maintenance intervals
Weekly
Half-yearly
Half-yearly or when required
Maintenance Works
Clean the sieve in the water connection
High-pressure pump
Dispose of old oil ecologically or turn it in
at a collection point.
Motor
Decalcify appliance
22 EN