Hilti AG 125-A22 Mode D'emploi page 29

c) Breathing protection must be worn if the power
tool is used without a dust removal system for
work that creates dust.
d) Do not operate the power tool without the pro-
tective devices that belong to it.
e) Operate the power tool only as intended and when
it is in faultless condition.
f) Improve the blood circulation in your fingers by
relaxing your hands and exercising your fingers
during breaks between working.
g) Switch the power tool on only after bringing it into
position at the workpiece.
h) Remove the battery before storing or transporting
the power tool.
i) Never brake the tool by applying lateral pressure
to the grinding or cutting disc.
j) Do not touch the clamping flange or the clamping
screw while the power tool is running.
k) Never press the spindle lockbutton while the
grinding or cutting disc is still rotating.
l) Never direct the power tool toward persons.
m) Adjust the pressure applied to the grinding or
cutting disc to suit the material you are working
on, so that the grinding or cutting disc doesn't
stall, possibly causing the tool to kick back.
n) Avoid touching rotating parts. Switch the power
tool on only after bringing it into position at the
workpiece. Touching rotating parts, especially rotat-
ing insert tools, may lead to injury.
o) When grinding with straight grinding discs and
cutting with cutting discs in metalworking applic-
ations, use only the guard with cover plate. This is
available as an optional accessory.
p) Children must be instructed not to play with the
power tool.
q) The power tool is not intended for use by children,
by debilitated persons or those who have received
no instruction or training.
Do not use the power tool if it starts with a jolt.This
r)
may be an indication that the electronic control unit
is defective. Have the tool repaired at an authorized
Hilti service center right away.
s) Dust from material such as paint containing lead,
some wood species, minerals and metal may be
harmful. Contact with or inhalation of the dust may
cause allergic reactions and/or respiratory diseases
to the operator or bystanders. Certain kinds of dust
are classified as carcinogenic such as oak and beech
dust especially in conjunction with additives for wood
conditioning (chromate, wood preservative). Material
containing asbestos must only be treated by special-
ists. Where the use of a dust extraction device is
possible it shall be used. To achieve a high level
of dust collection, use a suitable vacuum cleaner
of the type recommended by Hilti for wood dust
and/or mineral dust together with this tool. Ensure
that the workplace is well ventilated. The use of a
dust mask of filter class P2 is recommended. Fol-
low national requirements for the materials you
want to work with.
5.3.2 Power tool use and care
a) Grinding discs must be stored and handled care-
fully in accordance with the manufacturer's in-
structions.
b) Check that the grinding disc is fitted in accord-
ance with the manufacturer's instructions.
c) If use of a spacer ring or other intermediate part is
specified and the part is supplied with the grinding
disc, check to ensure that the part is fitted.
d) Before use, check that the cutting or grinding
disc has been fitted correctly and the clamping
nut tightened. Then allow the power tool to run
for 30 seconds under no load while holding it se-
curely. Switch off the power tool immediately if
significant vibration or any other faults are no-
ticed. Should this occur, examine the power tool
in order to determine the cause.
e) Never use the power tool without the guard.
f) Do not use separate reducing rings or adapters to
enable use of grinding discs with a larger mount-
ing hole.
g) If the grinding disc (or cup wheel, etc.) is equipped
with a threaded insert, check that the threaded
section is long enough to take up the length of
the drive spindle.
h) The workpiece must be fixed securely in place.
i) Do not use cutting discs for grinding.
j) Take steps to ensure that flying sparks from the
tool do not present a hazard, i.e. by striking your-
self or other persons or by igniting inflammable
substances. Adjust the position of the disc guard
accordingly.
k) When working in dusty conditions, check to en-
sure that the cooling air openings remain unob-
structed. Should it become necessary to remove
dust deposits from the air openings, first unplug
the tool from the electric supply and then use a
non-metallic object to remove the dust, taking
care to avoid damaging parts inside the tool.
l) If the nut securing the disc and flange is not
tightened firmly, the disc may work loose from
the spindle due to the braking effect of the motor.
Tighten the disc / flange securing nut in accordance
with the directions given in the operating instructions.
Wait until the disc comes to a standstill.
5.3.3 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 damaged accidentally. This presents a serious risk
of electric shock.
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