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● When not in use, the tool must be stored in a dry
place, locked up or out of reach of children.
● Avoid unintentional starting. Never keep a finger on
the on/off switch when carrying the tool when it is
connected to the electric supply. Check that the on/
off switch is in the "off" position before plugging the
supply cord into the electric socket.
● Switch the tool on only once it has been brought into
the working position close to the workpiece.
● Unplug the tool when it is not in use, during pauses
between work, before maintenance and before chang-
ing insert tools.
● Switch the tool off before transporting it.
● Take care of your insert tools. You will be able to work
more efficiently and more safely if the insert tools
are kept sharp and clean. Observe the instructions
concerning lubrication and changing insert tools.
● Check that moving parts function correctly without
sticking and that no parts are damaged. All parts
must be fitted correctly and fulfill all conditions nec-
essary for correct operation of the tool.
● Check the tool for possible damage. Protective devices
and any parts that may have suffered slight damage
should be checked for correct operation and func-
tionality before further use. Damaged safety devices
or other damaged parts must be replaced or repaired
properly by an authorized repair workshop unless
otherwise indicated in the operating instructions.
5.3.1 Mechanical hazards
● Observe the instructions concerning care and main-
tenance.
● Ensure that the insert tools used are equipped with
the appropriate connection end system and that they
are properly fitted and secured in the chuck.
5.3.2 Electrical hazards
● Protect yourself against electric shock. Avoid body
contact with earthed/grounded objects, e.g. pipes,
radiators, cookers and fridges.
● Check the condition of the supply cord and its plug
connections and have it replaced by a qualified elec-
trician if damage is found. Check the condition of the
extension cord and replace it if damage is found.
● Check the condition of the tool and its accessories.
Do not operate the tool or its accessories if damage
is found, if the tool is incomplete or if its controls
cannot be operated faultlessly.
● Do not touch the supply cord in the event of it suf-
fering damage while working. Disconnect the sup-
ply cord plug from the socket.
● Damaged or faulty switches must be replaced at a
Hilti service center. Do not use the tool if its switch
is inoperative.
● Have the tool repaired only by a trained electrical
specialist (Hilti service center) using original Hilti
spare parts. Failure to observe this point may result
in risk of accident to the user.
● Electrostatic discharge is possible at any time.
● Do not use the supply cord for purposes for which
it is not intended. Never carry the tool by the supply
cord and never pull the plug out of the socket by
pulling the supply cord.
● Do not expose the supply cord to heat, oil or sharp
edges.
● When working outdoors, use only extension cords
that are approved and correspondingly marked for
this type of use.
● In the event of a power failure, switch the tool off
and unplug the supply cord.
● Avoid using extension cords with multiple sockets
and the simultaneous use of several tools connected
to one extension cord.
● Never operate the tool when it is dirty or wet. Dust
(especially dust from conductive materials) or damp-
ness adhering to the surface of the tool may, under
unfavorable conditions, present a risk of electric
shock. Dirty or dusty electric tools should thus be
checked at a Hilti service center at regular intervals,
especially if used frequently for working on con-
ductive materials.
5.3.3 Thermal hazards
● The insert tool may become hot during use. Wear
protective gloves when changing insert tools.
5.3.4 Dust
● Breathing protection must be worn when the tool is
used without a dust removal system for work that
creates dust.
Warning:
hot surface
Wear
protective
gloves
Wear
breathing
protection
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