Kärcher K 3.690 Operator's Manual page 6

This system is capable of producing
12400 kPa /1800 PSI to avoid rupture
and injury, do not operate this pump with
components rated less than 12400 kPa
/1800 PSI working pressure (including
but not limited to spray guns, hose and
hose connections).
Before servicing, cleaning or removing
any parts, shut off power and relieve
pressure.
GROUNDING INSTRUCTIONS
This product must be grounded. If it
should malfunction or breakdown,
grounding provides a path of least resis-
tance for electric current to reduce the
risk of electric shock. This product is
equipped with a cord having an equip-
ment-grounding conductor and a
grounding plug. The plug must be
plugged into an appropriate outlet that is
properly installed and grounded in ac-
cordance with all local codes and ordi-
nances.
DANGER
Improper connection of the equipment-
grounding conductor can result in a risk
of electrocution. Check with a qualified
electrician or service personnel if you
are in doubt as to whether the outlet is
properly grounded. Do not modify the
plug provided with the product - if it will
not fit the outlet, have a proper outlet in-
stalled by a qualified electrician. Do not
use any type of adapter with this prod-
uct.
GROUND FAULT CIRCUIT INTER-
RUPTER PROTECTION
This pressure washer is provided with a
ground-fault circuit-interrupter (GFCI)
built into the plug of the power-supply
cord. This device provides additional
protection from the risk of electric shock.
6
English
Should replacement of the plug or cord
become necessary, use only identical
replacement parts that include GFCI
protection.
WATER SUPPLY
(Cold Water Only)
CAUTION
When connecting the water inlet to the
water supply mains, local regulations of
your water company must be observed.
In some areas the unit must not be con-
nected directly to the public drinking wa-
ter supply. This is to ensure that there is
no feedback of chemicals into the water
supply. Direct connection via a receiver
tank or backflow preventer, for example,
is permitted.
Dirt in the feed water will damage the
unit. To avoid this risk, we recommend
fitting a water filter.
Garden hose must be at least 1/2

inch or 5/8 inch in diameter.
Flow rate of water supply must not

fall below 2 GPM (gallons per min-
ute).
Flow rate can be determined by run-

ning the water for one minute into an
empty 5-gallon container.
The water supply temperature must

not exceed 104°F/40°C.
Never use the pressure washer to

draw in water contaminated with sol-
vents, e.g. paint thinners, gasoline,
oil, etc.
Always prevent debris from being

drawn into the unit by using a clean
water source.