DeWalt DWD010 Manual De Instrucciones página 25

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1. Use sharp drill bits only. For WOOD, use twist drill bits, spade bits,
power auger bits, or hole saws. For METAL, use steel twist drill
bits or hole saws.
2. Always apply pressure in a straight line with the bit. Use enough
pressure to keep drill biting, but do not push hard enough to stall
the motor or deflect the bit.
3. Hold tool firmly with both hands to control the twisting action of
the drill.
4. IF DRILL STALLS, it is usually because it is being overloaded or
improperly used. RELEASE TRIGGER IMMEDIATELY, remove
drill bit from work, and determine cause of stalling. DO NOT
CLICK TRIGGER ON AND OFF IN AN ATTEMPT TO START
A STALLED DRILL — THIS CAN DAMAGE THE DRILL.
5. To minimize stalling or breaking through the material, reduce
pressure on drill and ease the bit through the last fractional part
of the hole.
6. Keep the motor running when pulling the bit back out of a drilled
hole. This will help prevent jamming.
7. With variable speed drills there is no need to center punch
the point to be drilled. Use a slow speed to start the hole and
accelerate by squeezing the trigger harder when the hole is deep
enough to drill without the bit skipping out.
DRILLING IN METAL
Start drilling with slow speed and increase to full power while applying
firm pressure on the tool. A smooth even flow of metal chips indicates
the proper drilling rate. Use a cutting lubricant when drilling metals.
The exceptions are cast iron and brass which should be drilled dry.
NOTE: Large [5/16" (8 mm) to 1/2" (13 mm)] holes in steel can be
made easier if a pilot hole [5/32" (4 mm) to 3/16" (5 mm)] is drilled
first.
DRILLING IN WOOD
Start drilling with slow speed and increase to full power while applying
firm pressure on the tool. Holes in wood can be made with the same
twist drills used for metal. These bits may overheat unless pulled out
frequently to clear chips from the flutes. Work that is apt to splinter
should be backed up with a block of wood.
Keyed Chuck (Fig. 1, 3, 4)
The DWD010 and the DWD014 feature a keyed chuck (d).
FIG. 3
TO INSERT A DRILL BIT OR OTHER ACCESSORY
1. Open the chuck jaws by turning collar by hand and insert the
shank of the bit about 19 mm (3/4") into chuck. Tighten the chuck
collar by hand.
2. Place chuck key in each of the three holes, and tighten in
clockwise direction. It's important to tighten chuck with all three
holes.
To release the bit, turn the chuck counterclockwise in just one hole,
then loosen the chuck by hand.
REMOVAL OF KEYED CHUCK (FIG. 3)
Tighten the chuck around the shorter end of a hex key. Using a soft
hammer, strike the key sharply in the counterclockwise direction
when viewed from the front of the tool. This will loosen the chuck so
that it can be removed by hand.
24
FIG. 4

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