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Safety and operating instructions
The pressure gauge is equipped with a needle which
is pressed into the hose to measure the pressure
inside.
Water pressure
The water pressure must be at least 1 bar lower than
the air pressure otherwise water can enter the impact
mechanism. For example if the air pressure is 6 bar,
the water pressure must be below 5 bar to prevent
water entering the impact mechanism.
Drill steel
WARNING Ejected insertion tool
If the tool retainer on the machine is not in a locked
position, the inserted tool can be ejected with force,
which can cause personal injury.
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Before changing the insertion tool, stop the
machine, switch off the compressed air supply
and bleed the machine by activating the start and
stop device.
Before fitting the insertion tool
Check that the tool shank is of the correct size and
length for the chuck used. The shank must be clean
and the tool must be in good condition. Shanks which
are chipped, rounded, out of square or too hard on
the striking end will operate inefficiently and cause
premature piston failure.
Inspect the drill steel:
A dull drill steel will slow down the drilling speed and
overstrain the drill mechanism. When changing drill
steel make sure that the new one is the correct size
to follow your previous bore.
Before drilling, check that the flushing hole in the drill
steel is not blocked.
CAUTION Hot insertion tool
The tip of the insertion tool can become hot and
sharp when used. Touching it can lead to burns and
cuts.
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Never touch a hot or sharp insertion tool.
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Wait until the insertion tool has cooled down before
carrying out maintenance work.
NOTICE Never cool a hot insertion tool in water, it
can result in brittleness and early failure.
Fitting the drill steel
Whenever fitting the drill steel the following
instructions must be observed:
1. Push the retainer outwards in the direction of the
arrow, until the front portion of the retainer is able
to accommodate the drill steel collar.
2. Insert the drill steel in the chuck.
3. When the drill bottoms, push back the retainer
to lock it.
Removing the drill steel
Whenever removing the drill steel the following
instructions must be observed:
RH 656W
Original instructions
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