4
vided with a means of removing and collecting dust,
check that this is connected correctly and used as
intended.
● To avoid tripping and falling when working, always
lead the supply cord, extension cord and dust extraction hose away to the rear.
● Concealed electric cables or gas and water pipes pre-
sent a serious hazard if damaged while you are working. Accordingly, check the area in which you are working beforehand (e.g. using a metal detector). External
metal parts of the tool may become live, for example,
when an electric cable is drilled into inadvertently.
5.3 General safety precautions
● Use the right tool for the job. Do not use the tool for
purposes for which it was not intended. Use the tool
only as directed and when it is in faultless condition.
● Avoid contact with rotating parts.
● Use only the original accessories or ancillary equip-
ment listed in the operating instructions. Use of accessories or items of ancillary equipment other than those
listed in the operating instructions may present a risk
of personal injury.
● Take the influences of the surrounding area into account.
Do not expose the tool to rain or snow and do not use
it in damp or wet conditions. Do not use the tool where
there is a risk of fire or explosion.
● Keep the grips clean, dry and free from oil and grease.
● Do not overload the tool. It will work more efficiently
and more safely within its intended performance range.
● Do not use damaged insert tools.
● Use only insert tools designed for the application on
hand.
● The side handle must be fitted at all times when the
tool is in use.
● Check that the side handle is securely attached.
● Always hold the tool securely with both hands on the
grips provided.
● 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.
● Unplug the tool when it is not in use (e.g. during pauses
between work), before maintenance and before changing 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 necessary
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 functionality 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.
● Do not leave the key in place on the chuck. Check that
the chuck key and wrenches etc. have been removed
before switching on the tool.
● Wear protective gloves when handling sharp insert
tools in order to avoid cutting your hands or fingers.
● Wear protective gloves when manipulating the side
handle and depth gauge in order to avoid injury (e.g.
pinching the fingers).
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 electrician 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 suffer-
ing damage while working. Disconnect the supply 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.
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