RB 400
English
14
The pressure washer is equipped with a
thermal pressure relief valve, which
automatically lets hot water escape from
the high-pressure pump. Never use
water with a temperature more then
52 °C (125 °F) to run the pressure
washer. See the "Working" Chapter in
this manual for more information to the
thermal pressure relief valve.
Always comply with the water supply
requirements in the "Specifications"
chapter in this manual.
NOTICE
Insufficient water supply can damage
the high-pressure pump. Only start the
engine when the water hose is
connected and the water supply is
turned on and delivering the minimum
water requirements in the
"Specifications" chapter in this manual.
Connecting the water hose
N Remove all sand and debris from
the connections
N Connect the water hose to the water
supply
N Open the water tap and rinse the
water hose so that sand and other
particles of dirt cannot get into the
high-pressure pump
N Turn off the water supply and
connect the water hose (1) to the
high-pressure pump (2)
Venting the system
Before starting the engine, the high-
pressure pump and hose system must
be vented:
N After connecting the water supply
and high pressure hose to the
pressure washer, unroll the high-
pressure hose fully and lay it out flat
and free from loops
N Turn on the water supply
N Point the spray attachment (without
the high-pressure nozzle installed)
downward to the ground
N Release the trigger lockout (1)
N Squeeze the spray gun trigger (2)
and wait until a uniform water flow
emerges from the spray lance
N Release the spray gun trigger and
engage the trigger lockout
NOTICE
Lack of water can damage the high-
pressure pump. Only start the engine
when the water hose is connected and
the water supply is turned on.
Connecting the Water Supply
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0000-GXX-0321-A0
0000-GXX-0330-A0
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