Manual Karcher HDS 12-14-4 ST (page 31 of 524) (All languages)

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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.

DANGER

Risk of explosion due to combustible gases! Smoking strictly pro-

hibited during decalcification. Ensure proper ventilation.

DANGER

Risk of chemical burns on account of acid! Wear protective glass-

es and protective gloves.

According to statutory requirements, only tested and approved

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 under 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

ABCa

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°

Descaling

Performance

Frost protection

Drain water

Flush device with anti-freeze agent

31EN

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Karcher HDS 12-14-4 ST Manual

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