Hilti DAG 451S Manual De Instrucciones página 6

maximum safe operating speed greater than the "rated speed" marked on the
tool's nameplate.
Hold tool by insulated gripping surfaces when performing an operation
where the grinding tools may contact hidden wiring or its own cord. Con-
tact with a "live" wire will make exposed metal parts of the tool "live" and
shock the operator.
Before using a grinder or installing a new wheel, inspect the grinding
wheel for chips and cracks. Remove bad wheels immediately. Run the
tool at no load for one minute, holding the tool in the direction away from
people. Wheels with flaws will normally break apart during this time.
Carefully handle both the tool and individual grinding wheels to avoid
chipping or cracking. Install a new wheel if tool is dropped while grind-
ing. Do not use a wheel that may be damaged. Fragments from a wheel
that bursts during operation will fly away at great velocity possibly striking you
or bystanders.
Do not use grinding wheel that is larger than the maximum recommend-
ed size for your tool, or worn down damaged wheels from larger
grinders. Wheels intended for large angle sander/grinders are not suitable for
the high speed of a small angle sander/grinder, these wheels may easily burst
and the fragments strike you or bystanders.
Depressed hub wheels are not intended for cutting and may shatter.
Depressed hub wheels or type 1 (cutting) wheels are not intended for side
loading and may shatter under overload.
Do not use hubbed spin-on type 27 grinding wheels.
Do not use this tool with "Woodcarving" blade. Such blades create fre-
quent kick-back and loss of control.
Wear proper apparel while using a sander/grinder. Face shield or at least
safety goggles, dust mask, leather gloves and shop apron capable of stop-
ping small wheel or workpiece fragments.
Position the cord clear of the spinning grinding wheel or any other sand-
ing accessory. Do not wrap the cord around your arm or wrist. If you lose
control and have the cord wrapped around your arm or wrist it may entrap you
and cause injury.
Avoid bouncing and snagging the wheel, especially when working cor-
ners, sharp edges etc. This can cause loss of control and kick-back.
Regularily clean the tool's air vents by compressed air. Excessive accumu-
lation of powdered metal inside the motor housing may cause electrical failures.
Do not grind or sand near flammable materials. Sparks from the wheel
could ignite these materials.
This tool can be converted to a sander. When grinding is resumed the
proper guard and wheel flanges MUST be reinstalled before proceeding
with grinding. The guard must always be attached to the tool and
positioned for maximum safety, so the least amount of wheel is exposed
from the side the tool is being operated. The grinding wheel guard cannot
be used for most sanding operations or for wire brushing.
When sanding, do not use oversized sanding disc. Larger sanding disc will
extend beyond the sanding pad causing snagging, tearing of the disc or kick-
back. Extra paper extending beyond the sanding pad can also cause serious
lacerations.
When grinding or sanding any material that may create harmful dust, use
special precautions. A suitable breathing respirator must be worn by all per-
sonal entering the work area. Work area should be sealed by plastic sheeting and
persons not protected should be kept out until work area is thoroughly cleaned.
WARNING: This product contains or produces an exposure to chemicals
known to the state of California to cause cancer and births defects ( or other
preproductive harm).
Symbols used on the tool:
V = Volts
~ = Alternating current
Hz = Hertz
W = Watts
A = Amperes
Fitting the disc guard
Always disconnect the plug from the mains socket before carrying out any
work on the machine!
Disc guard
The guard must always be fitted when working with rigid grinding discs.
Printed: 07.07.2013 | Doc-Nr: PUB / 5069465 / 000 / 00
n = Rated speed
/min = Revolutions per minute
∅
= Diameter
Z
= Class II construction