Kärcher HDS 7/16 C, Manual

Page: 16 / 24

– 2
– The operating elements for the cleaning process
are yellow.
– The controls for the maintenance and service are
light gray.
High-pressure jets can be dangerous if im-
properly used. The jet may not be directed
at persons, animals, live electrical equip-
ment or at the appliance itself.
Cleaning of: Machines, Vehicles, Structures, Tools, Fa-
cades, Terraces, Gardening tools, etc.

DANGER
Risk of injury! Follow the respective safety regulations
when operating at gas stations or other dangerous are-
as.
Quality requirements for water:
ATTENTION
Only clean water may be used as high pressure medi-
um. Impurities will lead to increased wear and tear or
formation of deposits in the appliance and accessories.
If recycled water is used, the following limit values must
not be exceeded.
– Please follow the national rules and regulations for
fluid spray jets of the respective country.
– Please follow the national rules and regulations for
accident prevention of the respective country. Fluid
spray jets must be tested regularly and the results
of these tests must be documented in writing.
– The heating appliance of the machine is an ignition
plant. All national laws and regulations about heat-
ing systems must also be followed.
– The appliance/accessories must not be modified.
Safety devices serve for the protection of the user and
must not be put out of operation or bypassed with re-
spect to their function.
– 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 pres-
sure 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 manufacturer and
sealed. Setting only by customer service.
– The safety valve opens, when the overflow valve
resp. the pressure switch is broken.
The safety valve is set by the manufacturer and sealed.
Setting only by customer service.
– The water shortage safeguard prevents the burner
to be turned on when there is water shortage.
– A sieve prevents the contamination of the safe-
guard and must be cleaned regular.
– The temperature stop switches off the machine
when the waste gases have reached very high tem-
peratures.
Colour coding
Symbols on the machine
Risk of electric shock!
Only electricians or authorised techni-
cians are permitted to work on parts of
the plant.
Risk of burns on account of hot surfaces!
Risk of poisoning! Do not inhale exhaust
fumes.
Proper use
Please do not let mineral oil contaminated waste water
reach soil, water or the sewage system. Perform en-
gine cleaning and bottom cleaning therefore only on
specified places with an oil trap.
pH value 6,5...9,5
electrical conductivity * Conductivity fresh
water +1200 µS/
cm
settleable solids ** < 0,5 mg/l
total suspended solids *** < 50 mg/l
Hydrocarbons < 20 mg/l
Chloride < 300 mg/l
Sulphate < 240 mg/l
Calcium < 200 mg/l
Total hardness < 28 °dH
< 50 °TH
< 500 ppm (mg
CaCO
3
/l)
Iron < 0,5 mg/l
Manganese < 0,05 mg/l
Copper < 2 mg/l
Active chloride < 0,3 mg/l
free of bad odours
* Maximum total 2000 µS/cm
** Test volume 1 l, settling time 30 min
*** no abrasive substances
Safety instructions
Safety Devices
Overflow valve with two pressure switches
Safety valve
Water shortage safeguard
Temperature stop for exhaust gases
16 EN