Safety Instructions; Safety Devices; Overflow Valve - Kärcher HD 9/21 G Manual De Instrucciones

Please do not let mineral oil contaminated
waste water reach soil, water or the sew-
age system. Perform engine cleaning and
bottom cleaning therefore only on speci-
fied places with an oil trap.
Quality requirements for water:
ATTENTION
Only clean water may be used as high
pressure medium. Impurities will lead to in-
creased wear and tear or formation of de-
posits in the appliance.
If recycled water is used, the following limit
values must not be exceeded.
pH value
electrical conductivity *
settleable solids **
total suspended solids *** < 50 mg/l
Hydrocarbons
Chloride
Sulphate
Calcium
Total hardness
Iron
Manganese
Copper
Active chloride
free of bad odours
* Maximum total 2000 μS/cm
** Test volume 1 l, settling time 30 min
*** no abrasive substances

Safety instructions

 Please follow the national rules and
regulations for fluid spray jets of the re-
spective 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 appliance/accessories must not be
modified.
6,5...9,5
Conductivity
fresh water
+1200 μS/cm
< 0,5 mg/l
< 20 mg/l
< 300 mg/l
< 240 mg/l
< 200 mg/l
< 28 °dH
< 50 °TH
< 500 ppm
(mg CaCO /l)
3
< 0,5 mg/l
< 0,05 mg/l
< 2 mg/l
< 0,3 mg/l
– 3
EN
DANGER
– Do not use high pressure cleaners
when there has been an oil spill; move
the appliance to another spot and avoid
any sort of spark formation.
– Do not store, spill or use fuel in the vi-
cinity of open flames or appliances such
as ovens, boilers, water heaters, etc.
that have an ignition flame or can gen-
erate sparks.
– Keep even mildly inflammable objects
and materials away from the muffler (at
least 2 m).
– Do not start the engine without the muf-
fler; check, clean and replace, if re-
quired, the muffler at regular intervals.
– Do not use the engine in forest, bushes
or grassy areas without fitting a spark
receiver at the exhaust
– Except for setting jobs, do not run the en-
gine when the air filter is removed or there
is no cover over the suction support.
– Do not make any adjustments to the
regulator springs, regulator bars or oth-
er parts that can bring forth an increase
in the engine speed.
– Risk of burns! Do not touch hot muf-
flers, cylinders or radiator ribs.
– Do not put hands or feet close to mov-
ing or rotating parts.
– Risk of poisoning! The appliance should
not be operated in closed rooms.
– Do not use unsuitable fuels, as they
may be dangerous.

Safety Devices

Safety devices serve for the protection of the
user and must not be put out of operation or
bypassed with respect to their function.

Overflow valve

– If the hand spray gun is closed, the
overflow valve opens and the high pres-
sure pump diverts the water back to the
pump suction side. Thus the permissi-
ble working pressure is not exceeded.
– The overflow valve is set by the manu-
facturer and sealed. Setting only by
customer service.
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