DeWalt DWD522 Manual De Instrucciones página 25

Proper Hand Position (Fig. E)

WARNING: To reduce the risk of serious personal injury,
ALWAYS use proper hand position as shown.

WARNING: To reduce the risk of serious personal
injury, ALWAYS hold securely in anticipation of a
sudden reaction.
Proper hand position requires one hand on the side handle
with the other hand on the main handle
Keyless Chuck (Fig. F–H)
The DWD522 and DWD524 feature a keyless chuck
convenience. To insert a drill bit or other accessory, follow the
steps listed below.
1. Grasp the rear half of the chuck with one hand and use
your other hand to rotate the front half counterclockwise,
as shown in Figure F. Rotate far enough so that the chuck
opens sufficiently to accept the desired accessory.
2. Insert the bit or other accessory about 19 mm into the chuck
and tighten securely by holding the rear half of the chuck
and rotating the front portion in the clockwise direction.
When the chuck is nearly tightened, you will hear a clicking
sound. After 4–6 clicks, the chuck is securely tightened
around the accessory.
3. To release the accessory, repeat step 1 listed above.

WARNING: Do not attempt to tighten drill bits (or any
other accessory) by gripping the front part of the chuck
and turning the tool on. Damage to the chuck and
personal injury may result.
Keyless Chuck Removal (Fig. G)
Tighten the chuck around the shorter end of a hex key (not
supplied) of 6 mm or greater size. Using a soft hammer or piece
of wood, strike the longer end in the counterclockwise direction.
This will loosen the chuck so that it can be unscrewed by hand.
Keyless Chuck Installation (Fig. H)
Screw the chuck on by hand as far as it will go. Tighten the
chuck around the shorter end of a 6 mm or larger hex key (not
supplied). Strike the longer end in the clockwise direction with
a soft hammer.
Depth Rod (Fig. B)
To Adjust the Depth Rod
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Loosen the handle and move the depth rod
distance between the end of the rod and the end of the bit
equals the desired drilling depth. When drilling with depth rod,
stop when end of rod reaches surface of material.
Drilling
Turn the collar to the drill bit symbol for drilling or to the
hammer symbol for hammerdrilling. Install and tighten the
desired drill bit in the chuck.
Drilling Operation
Select the desired speed/torque range using the speed selector
collar to match the speed and torque to the planned operation.
1. For Wood, use twist bits, spade bits, power auger bits or
2. Always apply pressure in a straight line with the bit. Use
5
6
.
3. Hold tool firmly with both hands to control the twisting
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for greater

4. IF DRILL sTaLLs, it is usually because it is being
5. To minimize stalling or breaking through the material,
6. Keep the motor running when pulling the bit back out of a
7. With variable speed drills there is no need to center punch
Impact Drilling Operation
1. When drilling, use just enough force on the hammer to keep
2. Drill straight, keeping the bit at a right angle to the work. Do
3. When drilling deep holes, if the hammer speed starts to
4. For masonry, use carbide-tipped bits or masonry bits. A
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so that the
MAINTENANCE
Your D
over a long period of time with a minimum of maintenance.
Continuous satisfactory operation depends upon proper tool
care and regular cleaning.

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, use carbide-tipped bits or masonry bits. A
smooth, even flow of dust indicates the proper drilling rate.
enough pressure to keep the drill bit biting, but do not push
hard enough to stall the motor or deflect the bit.
action of the drill.
WARNING: Drill may stall if overloaded causing a sudden
twist. Always expect the stall. Grip the drill firmly with both
hands to control the twisting action and avoid injury.
overloaded. RELEasE TRIGGER IMMEDIaTELY, remove
drill bit from work, and determine cause of stalling. DO
nOT cLIck TRIGGER OFF anD On In an aTTEMPT
TO sTaRT a sTaLLED DRILL – THIs can DaMaGE
THE DRILL.
reduce pressure on drill and ease the bit through the last
fractional part of the hole.
drilled hole. This will help prevent jamming.
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.
it from bouncing excessively or "rising" off the bit. Too much
force will cause slower drilling speeds, overheating and a
lower drilling rate.
not exert side pressure on the bit when drilling as this will
cause clogging of the bit flutes and a slower drilling speed.
drop off, pull the bit partially out of the hole with the tool
still running to help clear debris from the hole.
smooth even flow of dust indicates the proper drilling rate.
WALT power tool has been designed to operate
e
WARNING: To reduce the risk of serious personal
injury, turn tool off and disconnect tool from power
source before making any adjustments or removing/
installing attachments or accessories. Be sure the
trigger switch is in the OFF position. An accidental start-up
can cause injury.
EnGLIsH
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