Karcher HD 13-12-4 ST - Manual (Page 19)

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If the operating time (without interruption of
work) exceeds an adjustable value (5...120
minutes), the appliance will shut off.
The motor protection switch switches off
the device if the power consumption is
high.
In case of leaks in the high pressure sys-
tem, the appliance is shut off.
After the operation readiness period, a so-
lenoid valve opens in the high pressure
system and relieves the pressure.
The lack of water fuse in the float container
prevents the high pressure pump from run-
ning dry in case of a lack of water.
– This equipment produces water under
high pressure downstream to high pres-
sure cleaning devices. If required the
detergent is drawn in and added to the
water.
– The high pressure module is perma-
nently installed in a dry, frost-free room.
The high pressure water is distributed
through a fixed network of pipes.
Alternatively, a hand spray gun with a
high pressure hose can be connected
directly to the high pressure outlet of the
appliance.
– The high pressure model must be in-
stalled at a wall in such a way that the
rear opening is sealed by the wall.
ƽ DANGER
Risk of injury! Follow the respective safety
regulations when operating at gas stations
or other dangerous areas.
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.
Motor protection switch
Leakage monitoring
Pressure relief (option)
Lack of water fuse (option)
Proper use
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.
Water quality requirements
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
19 EN