Karcher HDS 9-14-4 ST - Manual (Page 31)

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You can enter into a maintenance contract with the concerned
Kaercher Sales Office for the machine.
Figure 1 - Pos. 3

Shut off water supply.
 Remove the water inlet hose on the appliance.
 Push out the sieve from the connection using a screw-driver.
 Cleaning the sieve
 Assemble it back in the reverse sequence.
 Remove covering panels.
 Unscrew the bracket from the safety block.
 Turn in screw M8x30 into the sieve.
 Pull out the screw and the sieve using pliers.
 Cleaning the sieve
 Assemble it back in the reverse sequence.
The ignition electrodes must be set according to the following
specifications:
When there are deposits formed in the pipe connections, there is
an increase in the flow resistance; this can cause the pressure
switch to be triggered.
ƽ
Danger
Risk of explosion due to combustible gases! Smoking strictly pro-
hibited during decalcification. Ensure proper ventilation.
ƽ Danger
Risk of burns injury on account of acid! Wear protective glasses
and protective gloves.
According to statutory requirements, only tested and approv ap-
proved boiler decrusting agents may be used.
– RM 100 (Order No. 6.287-008) dissolves chalk and simple
compounds of chalk and detergents residues.
– RM 101 (Order No. 6.287-013) dissolves the deposits that
cannot be dissolved 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 con-
tainer.
 Open the hand-spray gun and do not close it during the de-
calcification process.
 Switch on the appliance switch to "Burner on" until the tem-
perature of approx. 40 °C 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.
Note: As an anti-corrosion measure and for neutralising the acid
residue, we recommend that you finally pump an alkaline solution
through the machine (for e.g. RM 81) via the detergent tank.
The machine should be stored in frost-free rooms. In case there
is frosting risk, for e.g. if the machine is installed in open areas,
then the machine must first be emptied and flushed using an anti-
freezing agent.
 Screw off water supply hose and high pressure hose.
 Operate device for max. 1 minute until the pump and conduits
are empty.
 Screw off supply hose at boiler bottom and drain heating spi-
ral empty.
Note: Observe handling instructions of the anti-freeze agent
manufacturer.

Fill in normal anti-frost agents in the swimmer tank right until
the top.
 Place the collection trough unter the high pressure exit.
 Switch on the appliance and let it run until the safety mecha-
nism against lack of water in swimmer tank gets activated and
the machine is switched off.
A certain corrosion protection is achieved with this as well.
Maintenance contract
Cleaning the sieve
Sieve in water inlet
Sieve in the water shortage safe guard
Electrode setting
A B C a
HDS 9/14 4,5±0,5 3,5±0,5 3+0,5 60°
HDS 12/14 3,5±0,5 3,5±0,5 3+0,5 60°
2.
1.
A
B C
a
Descaling
Performance
Frost protection
Drain water
Flush device with anti-freeze agent
31 EN