DeWalt D28474 Instruction Manual page 4

Specific Safety Rules for Grinders
Always use proper guard with grinding wheel. A guard protects
operator from broken wheel fragments and wheel contact.
Accessories must be rated for at least the speed recom-
mended on the tool warning label. Wheels and other accessories
running over rated speed can fly apart and cause injury. Refer to the
table below. Accessory ratings are above rated no-load tool speeds
because actual tool speeds may vary.
NOTE: The rated no load tool speed is printed on the name plate and
embossed on the gear case.
Rated no
(no load)
Tool Speed
5000 RPM
6000 RPM
8000 RPM
Minimum
Accessory
Rating
5500 RPM
6600 RPM
8500 RPM
Hold tool by insulated gripping surfaces when performing an
operation where the cutting tool may contact hidden wiring or
its own cord. Contact with a "five" wire will make exposed metal
parts of the tool "live" and shock the operator.
z_ Clean out your tool often, especially after heavy use. Dust and
grit containing metal particles often accumulate on interior surfaces
and could create a risk of serious injury, electric shock or elec-
trocution.
z_ Before using, inspect recommended accessory for cracks or
flaws. If such a crack or flaw is evident, discard the accessory. The
accessory should also be inspected whenever you think the tool
may have been dropped.
When starting the tool with a new or replacement wheel, or a
new or replacement wire brush installed, hold the tool in a well
protected area and let it run for one minute./f the wheel has an
undetected crack or flaw, it should burst in less than one minute. If the
wire brush has loose wires, they will be detected. Never start the tool
with a person in fine with the wheel This includes the operator.
In operation, avoid bouncing the wheel or giving it rough
treatment. If this occurs, stop the tool and inspect the wheel for
cracks and flaws.
Direct sparks away from operator, bystanders or flammable
materials. Sparks may be produced while using a sander or
grinder. Sparks may cause burns or start fires.
Always use side handle. Tighten the handle securely. The side
handle should always be used to maintain control of the tool at all
times.
Use extra care when grinding into a corner because a sudden,
sharp movement of the grinder may be experienced when the
wheel contacts a secondary surface.
z_ Wear appropriate personal hearing protection during use.
Under some conditions and duration of use, noise from this product
may contribute to hearing loss.
_WARNING: Some dust created by power sanding, sawing,
grinding, drilling, and other construction activities contains chem-
icals known to cause cancer, birth defects, or other reproductive
harm. Some examples of these chemicals are:
• lead from lead-based paints,
• crystalline silica from bricks and cement and other masonry
products, and
• arsenic and chromium from chemically-treated lumber (CCA).