Greatneck 80154 Panduan Pemilik - Halaman 12
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Halaman CetakDRILLING – cont'd
The workpiece to be drilled should be
secured in a vise or with clamps to keep it
from turning as the drill bit rotates
(see Fig. 6).
1.
Check drill bit to make sure it is firmly
locked into the drill chuck and the
forward/reverse switch is in the forward
position.
2.
Hold the drill firmly with both hands
whenever possible. Use one hand to
grasp the handle and switch and the
other to grasp the body of the drill.
NOTE: Make sure the hand placed on
the body of the drill does not cover the
air vents. Covering these air vents will
reduce the motor cooling and possibly
lead to overheating the motor.
ASSEMBLY & OPERATION
Fig. 6
3.
While holding the drill firmly, place the
point of the drill bit at the point to be
drilled. Depress the switch trigger to
start the drill.
NOTE: Always use a higher drill speed
when drilling small holes. Use a slower
drill speed when drilling large holes.
4.
Move the drill bit into the workpiece
applying only enough pressure to keep
the bit cutting. Do not force the drill bit
or apply sideways pressure to elongate
the hole.
WARNING:
!
binding and bit breakthrough. When
these situations occur, the drill bit has a
tendency to grab the workpiece. This
action will kick the drill opposite to the
direction of drill bit rotation and could
cause loss of control when breaking
through material as you complete
drilling the hole. If you are not prepared,
this loss of control can result in serious
injury.
When drilling metals, use a light oil on the
drill bit to keep it from overheating. The oil
will prolong the life of the drill bit and
improve the drill cutting action. If the bit
jams in the workpiece or if the drill stalls,
release the trigger switch immediately.
Remove the bit from the workpiece and
determine the reason for jamming.
12
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