Makita DGD800 Manuel D'instructions page 5

11. Hold the power tool by insulated gripping sur-
faces only, when performing an operation where
the cutting tool may contact hidden wiring. Con-
tact with a "live" wire will also make exposed metal
parts of the power tool "live" and could give the oper-
ator an electric shock.
12. Always hold the tool firmly in your hand(s) dur-
ing the start-up. The reaction torque of the motor,
as it accelerates to full speed, can cause the tool to
twist.
13. Use clamps to support workpiece whenever
practical. Never hold a small workpiece in one
hand and the tool in the other hand while in use.
Clamping a small workpiece allows you to use your
hand(s) to control the tool. Round material such as
dowel rods, pipes or tubing have a tendency to roll
while being cut, and may cause the bit to bind or
jump toward you.
14. Never lay the power tool down until the acces-
sory has come to a complete stop. The spinning
accessory may grab the surface and pull the power
tool out of your control.
15. After changing the bits or making any adjust-
ments, make sure the collet nut, chuck or any
other adjustment devices are securely tightened.
Loose adjustment devices can unexpectedly shift,
causing loss of control, loose rotating components
will be violently thrown.
16. 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.
17. Regularly clean the power tool's air vents. The
motor's fan will draw the dust inside the housing and
excessive accumulation of powdered metal may
cause electrical hazards.
18. Do not operate the power tool near flammable
materials. Sparks could ignite these materials.
19. Do not use accessories that require liquid cool-
ants. Using water or other liquid coolants may result
in electrocution or shock.
Kickback and Related Warnings
Kickback is a sudden reaction to a pinched or snagged
rotating accessory. 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.
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,
depending 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
avoided 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. The operator can con-
trol kickback forces, if proper precautions are
taken.
b) Use special care when working corners,
sharp edges etc. Avoid bouncing and snag-
ging the accessory. Corners, sharp edges or
bouncing have a tendency to snag the rotating
accessory and cause loss of control or kickback.
c) Do not attach a toothed saw blade. Such
blades create frequent kickback and loss of con-
trol.
d) Always feed the bit into the material in the
same direction as the cutting edge is exiting
from the material (which is the same direc-
tion as the chips are thrown). Feeding the tool
in the wrong direction causes the cutting edge of
the bit to climb out of the work and pull the tool in
the direction of this feed.
Safety Warnings Specific for Grinding:
a) Use only wheel types that are recommended
for your power tool and only for recom-
mended applications.
Additional Safety Warnings:
20. The tool is intended for use with bonded abra-
sive wheel points (grinding stones) permanently
mounted on plain, unthreaded mandrel (shanks).
21. Make sure the wheel is not contacting the work-
piece before the switch is turned on.
22. Before using the tool on an actual workpiece, let
it run for a while. Watch for vibration or wobbling
that could indicate poor installation or a poorly
balanced wheel.
23. Use the specified surface of the wheel to per-
form the grinding.
24. Watch out for flying sparks. Hold the tool so that
sparks fly away from you and other persons or
flammable materials.
25. Do not leave the tool running. Operate the tool
only when hand-held.
26. Do not touch the workpiece immediately after
operation; it may be extremely hot and could
burn your skin.
27. Observe the instructions of the manufacturer for
correct mounting and use of wheels.
Handle and store wheels with care.
28. Check that the workpiece is properly supported.
29. If working place is extremely hot and humid, or
badly polluted by conductive dust, use a short-
circuit breaker (30 mA) to assure operator safety.
30. Do not use the tool on any materials containing
asbestos.
31. Always be sure you have a firm footing. Be sure
no one is below when using the tool in high loca-
tions.
SAVE THESE INSTRUCTIONS.
WARNING:
DO NOT let comfort or familiarity with product
(gained from repeated use) replace strict adherence
to safety rules for the subject product. MISUSE or
failure to follow the safety rules stated in this
instruction manual may cause serious personal
injury.
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