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Disconnecting the Water Hose
To disconnect the water hose:
► Switch off the pressure washer, @ 11.2.
► Disconnect the pressure washer from the power supply.
► Shut off the water supply.
► Pull the spray gun trigger to relieve pressure.
► Lock the spray gun trigger.
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► Remove the water hose (1).
► Unscrew the coupling (2).
10 Ground Fault Circuit Interrupter
(GFCI)
10.1 Testing the GFCI
WARNING
To reduce the risk of electrocution, always test the GFCI
each time you plug in your unit and before you start work.
The pressure washer has an electrical protection
mechanism. The GFCI is an important safety device that is
intended to protect the operator and bystanders from the risk
of electric shock or electrocution. It is designed to quickly
and automatically disconnect a circuit when it detects that
the electric current is not balanced.
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10 Ground Fault Circuit Interrupter (GFCI)
A GFCI does not provide protection against unexpected or
dangerously high current. Therefore it cannot replace a fuse
or protect against overheating or fire risk due to over-current
(overload) or short circuits if the fault does not lead to
current leakage.
To test the GFCI:
► Connect the power supply cord to a properly installed
electrical outlet that matches the voltage and electrical
frequency stated on the pressure washer's rating plate. A
red indicator plate inside the window (2) will become
visible.
► Depress the TEST button (1).
The red indicator plate inside the window (2) should not be
visible anymore.
► If the indicator plate remains visible after depressing the
TEST button, the GFCI is not working. Disconnect the
pressure washer from the power supply and have it
inspected by an authorized STIHL servicing dealer before
further use.
► Before starting work, always reset the GFCI as described
in chapter @ 10.2.
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