DeWalt DCH213 Manual De Instrucciones página 43

subsequent loss of control. Hold tool with both hands to maximize
control.
NOTICE: If drilling thin material, use a wood "back-up" block to
prevent damage to the material.
1. Turn the mode selector (D) to the drill symbol.
2. Use sharp drill bits only. For WOOD, use twist bits, spade bits,
power auger bits or hole saws. For METAL, use high-speed steel
twist drill bits or hole saws. Use a cutting lubricant when drilling
metals. The exceptions are cast iron and brass which should be
drilled dry. For MASONRY, such as brick, cement, cinder block,
etc., use carbide-tipped bits rated for percussion drilling.
3. 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.
4. Hold tool firmly with both hands to control the twisting action of
the drill. If model is not equipped with side handle, grip drill with
one hand on the handle and one hand on the battery pack.
WARNING: Drill may stall if overloaded causing a sudden twist.
Always expect the stall. Grip the drill firmly to control the twisting
action and avoid injury.
5. 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 DEPRESS TRIGGER ON AND OFF IN AN ATTEMPT
TO START A STALLED DRILL — THIS CAN DAMAGE THE
DRILL.
6. To minimize stalling or breaking through the material, reduce
pressure on drill and ease the bit through the last fractional part
of the hole.
7 . Keep the motor running when pulling the bit back out of a drilled
hole. This will help prevent jamming.
8 . 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
®
An SDS Plus to round shank adaptor chuck is required for the
DCH213. Ensure that tool is in drill-only mode. 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" to 1/2" [7.9 mm to 12.7 mm]) holes in steel can
be made easier if a pilot hole (5/32" to 3/16" [4 mm to 4.8 mm]) is
drilled first.
DRILLING IN WOOD
An SDS Plus ® to round shank adaptor chuck is required for the
DCH213. Ensure that tool is in drill-only mode. 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. For larger holes, use spade bits, power auger
bits, or hole saws. Work that is apt to splinter should be backed up
with a block of wood.
DRILLING IN MASONRY
When drilling in masonry, use carbide-tipped bits rated for percussion
drilling and be certain that the bits are sharp. Use a constant and firm
force on the tool to drill most effectively. A smooth, even flow of dust
indicates the proper drilling rate.
HAMMERDRILL OPERATION
1. When drilling, use just enough force on the hammer to keep it
from bouncing excessively or "rising" off the bit. Too much force
will cause slower drilling speeds, overheating, and a lower drilling
rate.
2. Drill straight, keeping the bit at a right angle to the work. Do not
exert side pressure on the bit when drilling as this will cause
clogging of the bit flutes and a slower drilling speed.
11