General Safety Instructions For Grinders; Specific Safety Rules And Symbols - Hitachi G12SN Manual De Instrucciones

English
b) The grinding surface of center depressed wheels
must be mounted below the plane of the guard lip.
An improperly mounted wheel that projects through
the plane of the guard lip cannot be adequately
protected.
c) 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, accidental contact with wheel and
sparks that could ignite clothing.
d) Wheels must be used only for recommended
applications. 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.
e) Always use undamaged wheel flanges that are of
correct size and shape for your selected wheel.
Proper wheel flanges support the wheel thus
reducing the possibility of wheel breakage. Flanges
for cut-off wheels may be different from grinding
wheel flanges.
f Do not use worn down wheels from larger power
tools.
Wheel intended for larger power tool is not suitable
for the higher speed of a smaller tool and may burst.
GENERAL SAFETY INSTRUCTIONS FOR
GRINDERS
– Check that speed marked on the wheel is equal to
or greater than the rated speed of the grinder;
– Ensure that the wheel dimensions are compatible
with the grinder;
– Abrasive wheels shall be stored and handled with
care in accordance with manufacturer's instructions;
– Inspect the grinding wheel before use, do not use
chipped, cracked or otherwise defective products;
– Ensure that mounted wheels and points are fitted in
accordance with the manufacturer's instructions;
– Ensure that blotters are used when they are provided
with the bonded abrasive product and when they
are required;
– Ensure that the abrasive product is correctly
mounted and tightened before use and run the tool
at no-load for 30 s in a safe position, stop
immediately if there is considerable vibration or if
other defects are detected. If this condition occurs,
check the machine to determine the cause;
– If a guard is equipped with the tool never use the
tool without such a guard;
– Do not use separate reducing bushings or adapters
to adapt large hole abrasive wheels;
– For tools intended to be fitted with threaded hole
wheel, ensure that the thread in the wheel is long
enough to accept the spindle length;
– Secure the workpiece and check that the workpiece
is properly supported. A workpiece clamped with
6
clamping devices or in a vice is held more securely
than by hand;
– Do not use cutting off wheel for side grinding;
– Ensure that sparks resulting from use do not create
a hazard e.g. do not hit persons, or ignite flammable
substances;
– Ensure that ventilation openings are kept clear when
working in dusty conditions, if it should become
necessary to clear dust, first disconnect the tool from
the mains supply (use non metallic objects) and
avoid damaging internal parts;
– Always use eye and ear protection. Other personal
protective equipment such as dust mask, gloves,
helmet and apron should be worn;
– Pay attention to the wheel that continues to rotate
after the tool is switched off.

SPECIFIC SAFETY RULES AND SYMBOLS

1. ALWAYS use proper guard with grinding wheel.
A guard protects operator from broken wheel
fragments.
2. Accessories must be rated for at least the speed
recommended on the tool warning label. Wheels
and other accessories running over rated speed
can fly apart and cause injury.
3. Hold tools by insulated gripping surfaces when
performing an operation where the cutting tool
may contact hidden wiring or its own cord. Contact
with a "live" wire will make exposed metal parts
of the tool "live" and shock the operator.
4. ALWAYS wear ear protectors when using the tool
for extended periods.
Prolonged exposure to high intensity
noise can cause hearing loss.
5. Use only a depressed center wheel with a rated
capacity which is GREATER than 13,300/min for
G12SN, 12,000/min for G13SN. Using any wheel
a rated capacity LESS than 13,300/min for G12SN
and 12,000/min for G13SN and/or an incorrect sized
wheel (see SPECIFICATIONS at page 9) may result
in wheel breakage, flying wheel fragments, and
resulting in death or serious injury.
6. NEVER touch moving parts.
NEVER place your hands, fingers or
other body parts near the tool's moving
parts.
7. NEVER operate without all guards in place.
NEVER operate this tool without all guards or
safety features in place and in proper working
order. If maintenance or servicing requires the
removal of a guard or safety feature, be sure to
replace the guard or safety feature before resuming
operation of the tool.