Safety Valve - Kärcher HDS 550 C Eco Original Instructions Manual

The heating appliance of the machine is
–
an ignition plant. All national laws and
regulations about heating systems must
also be followed.
As per the applicable national guide-
–
lines, the first time this high-pressure
cleaner must be taken into operation by
a skilled person. KÄRCHER has al-
ready performed this initial start-up for
you and has documented it accordingly.
The documentation can be requested at
your KÄRCHER partner. Please have
the part and plant number of the appli-
ance available when enquiring about
the documentation.
We would like to point out that the appli-
–
ance must be repeatedly checked by a
skilled person as prescribed by the ap-
plicable national regulations. Please
contact your KÄRCHER partner.
Safety Devices
Safety devices serve for the protection of the
user and must not be put out of operation or by-
passed with respect to their function.
Overflow valve with two pressure
switches
Only HDS 558.../601.../698.../798...
While reducing the water supply at the
–
pump head or with the Servopress -
regulation the overflow valve opens and
part of the water flows back to the pump
suck side.
If the hand-spray gun is closed, so that
–
the whole water flows back to the pump
suck side, the pressure switch at the
overflow valve shuts down the pump.
If the hand spray gun is opened, the
–
pressure switch on the cylinder head
turns the pump back on.
The overflow valve is set by the manufac-
turer and sealed. Setting only by customer
service.
Pressure switch
HDS 551 C Eco only
The pressure switch turns the device off
–
when the handgun is closed and switch
on when the handgun is opened.
The safety valve opens, when the over-
–
flow valve resp. the pressure switch is
broken.
The safety valve is set by the manufacturer
and sealed. Setting only by customer service.
Water shortage safeguard
The water shortage safeguard prevents
–
the burner to be turned on when there is
water shortage.
A sieve prevents the contamination of
–
the safeguard and must be cleaned reg-
ulary.
Motor protection switch
The motor protection switch interrupts
–
the electric circuit if the motor is over-
loaded.
Temperature stop for exhaust gases
The temperature stop switches off the
–
machine when the waste gases have
reached very high temperatures.
– 3
EN

Safety valve

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