English
OSHA and the Environmental Protection
Agency. Do not use your concrete cutter
to cut or disturb asbestos, asbestos-
containing products, or products such as
pipes which are wrapped or covered
with asbestos insulation. If you have any
reason to believe that you might be
cutting asbestos, immediately contact
your employer or a local OSHA
representative.
WARNING
To reduce the risk of injury from fire, do
not cut into any pipe, drum or other
container without first ensuring that it
does not contain a volatile or flammable
substance.
WARNING
When cutting into existing walls, floors or
similar structures, be alert for hidden
hazards such as electrical cables, water
and gas pipes and flammable
substances. Make sure that power,
water and gas have been shut off and
pipes drained before starting to cut.
Always check the other side before
cutting.
Operating Instructions
Ensure sufficient water supply to
diamond abrasive chain – do not allow
diamond abrasive chain to run dry.
Always completely open water shut-off
valve. Always wet cut – regardless of the
material to be cut. See chapter entitled
"Sample applications."
10
WARNING
Never operate near live electric wires.
To reduce the risk of electrocution to you
or bystanders, do not allow water or
sludge to contact live electric wires.
WARNING
Always check the diamond abrasive
chain before use and after
unintentionally striking any object;
frequently check it during use when it is
stopped. Look for cracks and make sure
that it is undamaged and in good
condition and that no pieces have
broken off.
WARNING
Check chain tension at regular intervals
during use (whenever the concrete
cutter is shut off). If the chain becomes
loose while cutting, shut off the engine
and then tighten the chain. Never try to
adjust the chain while the engine is
running! See chapter "Tension diamond
abrasive chain."
WARNING
Never operate the concrete cutter with
the starting-throttle lock engaged as this
does not permit proper control of the
speed of the unit and may lead to
serious injury.
WARNING
In the event of an emergency, switch off
the engine immediately – move the slide
control / stop switch to 0 or STOP.
WARNING
Always stop the engine and be sure the
chain has stopped rotating before
putting a concrete cutter down.
WARNING
The diamond abrasive chain continues
to move for a short period after the
throttle trigger is released (flywheel
effect).
Accelerating the engine while the
diamond abrasive chain is blocked
increases the load and will cause the
clutch to slip continuously. This may
occur if the throttle is depressed for
more than a few seconds when the
chain is pinched in the cut. It can result
in overheating and damage to important
components (e.g. clutch, polymer
housing components) – which can then
increase the risk of injury, e.g., from the
diamond abrasive chain moving while
the engine is idling.
WARNING
It is essential to determine the exact
direction of the cut before applying the
diamond abrasive chain to the work.
Diamond abrasive chains are
constructed for radial pressure only.
Lateral pressure must be avoided. Hold
the concrete cutter steady. To reduce
the risk of serious or fatal injury, do not
change the direction of the cut during the
cut as this may produce a high torsional
load on the diamond abrasive chain and
may cause it to bind, break or shatter.
If cutting performance begins to
deteriorate, check the sharpness of the
diamond abrasive chain, resharpen as
GS 461