Hilti DG150, Operating Instructions Manual

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of stopping small abrasive or workpiece fragments.
The eye protection must be capable of stopping fly-
ing debris generated by various operations . The dust
mask or respirator must be capable of filtrating parti-
cles generated by your operation. Prolonged expo-
sure to high intensity noise may cause hearing loss.
i) Keep bystanders a safe distance away from work
area. Anyone entering the work area must wear per-
sonal protective equipment.
Fragments of workpiece
or of a broken accessory may fly away and cause injury
beyond immediate area of operation.
j) Hold power tool by insulated gripping surfaces only,
when performing an operation where the cutting
accessory may contact hidden wiring or its own cord.
Cutting accessory contacting a “live” wire may make
exposed metal parts of the power tool “live” and shock
the operator.
k) Position the cord clear of the spinning accessory. If
you lose control, the cord may be cut or snagged and
your hand or arm may be pulled into the spinning
accessory.
l) Never lay the power tool down until the accessory
has come to a complete stop.
The spinning acces-
sory may grab the surface and pull the power tool out
of your control.
m) Do not run the power tool while carrying it at your
side.
Accidental contact with the spinning accessory
could snag your clothing, pulling the accessory into
your body.
n) Regularly clean the power tool’s air vents. The motor’s
fan will draw the dust inside the housing and exces-
sive accumulation of powdered metal may cause elec-
trical hazards.
o) Do not operate the power tool near flammable mate-
rials.
Sparks could ignite these materials.
p) Do not use accessories that require liquid coolants.
Using water or other liquid coolants may result in elec-
trocution or shock.
5.2.1 Further safety instructions for all operations
Kickback and related warnings
Kickback is a sudden reaction to a pinched or snagged
rotating wheel, backing pad, brush or any other acces-
sory. Pinching or snagging causes rapid stalling of the
rotating accessory which in turn causes the uncontrolled
power tool to be forced in the direction opposite of the
accessory’s rotation at the point of the binding.
For example, if an abrasive wheel is snagged or pinched
by the workpiece, the edge of the wheel that is entering
into the pinch point can dig into the surface of the mate-
rial causing the wheel to climb out or kick out. The wheel
may either jump toward or away from the operator, depend-
ing on direction of the wheel’s movement at the point of
pinching. Abrasive wheels may also break under these
conditions.
Kickback is the result of power tool misuse and/or incor-
rect operating procedures or conditions and can be avoid-
ed by taking proper precautions as given below.
a) Maintain a firm grip on the power tool and position
your body and arm to allow you to resist kickback
forces. Always use auxiliary handle, if provided, for
maximum control over kickback or torque reaction
during start-up.
The operator can control torque reac-
tions or kickback forces, if proper precautions are tak-
en.
b) Never place your hand near the rotating accessory.
Accessory may kickback over your hand.
c) Do not position your body in the area where power
tool will move if kickback occurs.
Kickback will pro-
pel the tool in direction opposite to the wheel’s move-
ment at the point of snagging.
d) Use special care when working corners, sharp edges
etc. Avoid bouncing and snagging the accessory.
Corners, sharp edges or bouncing have a tendency to
snag the rotating accessory and cause loss of control
or kickback.
e) Do not attach a saw chain woodcarving blade or
toothed saw blade.
Such blades create frequent kick-
back and loss of control.
5.2.2 Safety warnings specific for grinding operations
a) Use only wheel types that are recommended for your
power tool and the specific guard designed for the
selected wheel.
Wheels for which the power tool was
not designed cannot be adequately guarded and are
unsafe.
b) The guard must be securely attached to the power
tool and positioned for maximum safety, so the least
amount of wheel is exposed towards the operator.
The guard helps to protect operator from broken wheel
fragments and accidental contact with wheel.
c) Wheels must be used only for recommended appli-
cations. For example: do not grind with the side of
cut-off wheel.
Abrasive cut-off wheels are intended
for peripheral grinding, side forces applied to these
wheels may cause them to shatter.
d) Always use undamaged wheel flanges that are of
correct size and shape for your selected wheel.
Prop-
er wheel flanges support the wheel thus reducing the
possibility of wheel breakage. Flanges for cut-off wheels
may be different from grinding wheel flanges.
e) Do not use worn down wheels from larger power
tools.
Wheel intended for larger power tool is not suit-
able for the higher speed of a smaller tool and may
burst.
5.3 Additional safety instructions
5.3.1 Personal safety
a) Take care to avoid tripping over the supply cord, exten-
sion cord or extraction hose.
b) The side handle must be fitted to the tool at all times
when in use.
c) Keep the grips dry, clean and free from oil and grease.
d) The tool must be held by both hands when in use.
Printed: 08.07.2013 | Doc-Nr: PUB / 5069653 / 000 / 01