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Karcher HD 20-15-4 Cage Manual

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– 3
– Do not use high-pressure hoses that
have been driven over, kinked, pressed
or bent even if there is no externally vis-
ible damage.
– Store the high-pressure hoses in such a
way that they are not subject to any me-
chanical load.
– The appliance/accessories must not be
modified.
Safety devices serve to protect the user
and must not be rendered in operational or
their functions bypassed.
The switch prevents unintented starting of
the appliance. Stop the appliance during
breaks or after operation.
The safety catch on the trigger gun pre-
vents the appliance from being switched on
unintentionally.
– While reducing the water supply/quanti-
ty regulation at the pump head, the
overflow valve opens and part of the
water flows back to the pump suck side.
– If the hand spray gun is closed, the
overflow valve opens and the entire wa-
ter volume will flow back to the pump
suction side. The pressure switch on
the overflow valve sends a signal to the
control, which switches the pump off af-
ter approx. 30 seconds of trailing time
(does not apply to HD 16/15-4).
– If the hand spray gun is opened, the
pressure switch on the cylinder head
turns the pump back on.
The overflow valve and pressure switch are
set and sealed at the factory. Setting only
by customer service.
The electrical circuit breaker breaks the
power circuit when there is no voltage in
one of the phases.
The winding protection contact in the motor
winding of the pump drive switches off the
engine when there is a thermal overload.
The safety valve opens when there is a
problem in the pressure switch. This valve
is set and sealed in the factory. Do not
change the setting.
DANGER
Risk of injury! Device, tubes, high pressure
hose and connections must be in faultless
condition. If they are not in a perfect state
then the appliance must not be used.
Cut off tip of oil container cover (HD 25/
15-4).
Check oil level of the high pressure
pump.
The oil level must be at the centre of the
oil level display.
Add oil if required (see technical speci-
fications).
Fasten the pushing handle with the four
screws enclosed in the packet.
Safety Devices
Power switch
Safety catch
Overflow valve with pressure
switch
Electrical circuit breaker
Winding protection contact
Safety valve
Start up
Check oil level
Installing the pushing handle
16 EN
… 16 …


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