5.1.5 Service
a) Have your power tool serviced by a qualified
repair person using only identical replacement
parts. This will ensure that the safety of the power
tool is maintained.
5.2 Additional safety precautions
5.2.1 Personal safety
a) Wear ear protectors. Exposure to noise can cause
hearing loss.
b) Use auxiliary handles supplied with the power
tool. Loss of control can cause personal injury.
c) Always hold the power tool securely with both
hands on the grips provided. Keep the grips dry,
clean and free from oil and grease.
d) Breathingprotectionmustbewornifthepower
tool is used without a dust extraction system for
work that creates dust.
e) Improve the blood circulation in your fingers by
relaxing your hands and exercising your fingers
during breaks between working.
f) Avoid touching rotating parts. Switch the power
tool on only after bringing it into position at
the workpiece. Touching rotating parts, especially
rotating drill bits, d iscs or blades, etc. may lead to
injury.
g) Always lead the supply cord and extension cord
away from the power tool to the rear while
working. This helps to avoid tripping over the cord
while working.
5.2.2 Power tool use and care
a) Secure the workpiece. Use clamps or a vice
to secure the workpiece. The workpiece is thus
held more securely than by hand and both hands
remain free to operate the power tool.
b) Check that the insert tools used are compatible
with the chuck system and that they are secured
in the chuck correctly.
c) Switch the power tool off and unplug the supply
cord in the event of a power failure or interruption
in the electric supply. This will prevent accidental
restarting when the electric power returns.
5.2.3 Electrical safety
a) Before beginning work, check the working area
(e.g. using a metal detector) to ensure that no
concealed electric cables or gas and water pipes
are present. External metal parts of the power tool
may become live, for example, when an electric
cable is drilled into accidentally. This presents a
serious risk of electric shock.
b) Check the condition of the supply cord and its
plug connections and have it replaced by a qual-
ified electrician if damage is found. Check the
condition of the extension cord and replace it if
damage is found. Do not touch the supply cord in
the event of it suffering damage while working.
Disconnect the supply cord plug from the power
outlet. Damaged supply cords or extension cords
present a risk of electric shock.
c) Dirty or dusty power tools which have been
used frequently for work on conductive materi-
als should be checked at regular intervals at a
Hilti Service Center. Under unfavorable circum-
stances, dampness or dust adhering to the surface
of the power tool, especially dust from conductive
materials, may present a riskofelectricshock.
d) When working outdoors with an electric tool
check to ensure that it is connected to the electric
supply by way of a ground fault circuit breaker
(RCD) with a rating of max. 30 mA (tripping
current). Use of a ground fault circuit breaker
reduces the risk of electric shock.
e) Use of a ground fault circuit breaker (RCD) with a
maximum trip current of 30 mA is recommended.
5.2.4 Work area
a) Ensure that the workplace is well lit.
b) Ensure that the workplace is well ventilated.
Exposure to dust at a poorly ventilated workplace
may result in damage to the health.
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