Safety Devices; Overflow Valve With Pressure Switch; Safety Valve; Environmental Protection - Kärcher HD 3.0/20-4 M Ea Manual De Instrucciones

settleable solids **
total suspended solids
***
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 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 with pressure
switch
While reducing the water supply/quan-
tity regulation at the pump head, the
overflow valve opens and part of the
water flows back to the pump suck
side.
If the pulling lever on the trigger gun is
released the pressure switch turns off
the pump, the high-pressure jet is
stopped. If the pulling lever is pulled
the pump is turned on again.
< 0,5 mg/l
< 50 mg/l
< 20 mg/l
< 300 mg/l
< 240 mg/l
< 200 mg/l
< 28 °dH
< 50 °TH
< 500 ppm
(mg CaCO /
3
l)
< 0,5 mg/l
< 0,05 mg/l
< 2 mg/l
< 0,3 mg/l
– 5
EN

Safety valve

The safety valve opens when the per-
missible operating pressure is exceed-
ed; water flows back to the suction side
of the pump.
The overflow valve, pressure switch
and safety valve are set and sealed at
the factory.
Setting only by customer service.

Environmental protection

The packaging material can
be recycled. Please do not
throw the packaging materi-
al into household waste;
please send it for recycling.
Old appliances contain val-
uable materials that can be
recycled; these should be
sent for recycling. Batteries,
oil, and similar substances
must not enter the environ-
ment. Please dispose of
your old appliances using
appropriate collection sys-
tems.
Please do not release engine oil, fuel
oil, diesel and petrol into the environ-
ment Protect the ground and dispose
of used oil in an environmentally-
clean manner.
Electrical and electronic devices often
contain components which could po-
tentially pose a danger to human
health and the environment if handled
or disposed of incorrectly. However,
these components are necessary for
the proper operation of the device. De-
vices marked with this symbol must not
be disposed of with regular household
rubbish.
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