Drilling Operation; Maintenance - DeWalt DW511 Instruction Manual

English

WARNING: Do not attempt to tighten or loosen 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 occur.

WARNING: Burn Hazard. ALWAYS wear gloves when
changing bits. Accessible metal parts on the tool and
bits may get extremely hot during operation. Small
bits of broken material may damage bare hands.

Drilling Operation

1. Use sharp drill bits only. For WOOD, begin with low
speed and use twist drill bits, spade bits, power auger
bits or hole saws. For Metal, begin with low speed
and use 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.
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.
2. Always apply pressure in a straight line with the bit. Use
enough pressure to keep the drill bit 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.

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.
4. iF DRill sTAlls, it is usually because it is being
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.
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.
Hammerdrilling 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.
3. When drilling deep holes, if the hammer speed starts
to drop off, pull the bit partially out of the hole with the
tool still running to help clear debris from the hole.
6
4. For masonry, use carbide-tipped bits or masonry
bits. A smooth even flow of dust indicates the proper
drilling rate.

MAINTENANCE


WARNING: To reduce the risk of serious personal
injury, turn unit off and disconnect it from
power source before making any adjustments or
removing/installing attachments or accessories.
An accidental start-up can cause injury.
Cleaning

WARNING: Blow dirt and dust out of all air vents with
clean, dry air at least once a week. To minimize the risk
of eye injury, always wear ANSI Z87.1 approved eye
protection when performing this procedure.

WARNING: Never use solvents or other harsh
chemicals for cleaning the non-metallic parts of
the tool. These chemicals may weaken the plastic
materials used in these parts. Use a cloth dampened
only with water and mild soap. Never let any liquid
get inside the tool; never immerse any part of the tool
into a liquid.
Lubrication
Your tool was properly lubricated before leaving the
factory. In from two to six months, depending upon use,
take or send your tool to an authorized service center for a
complete cleaning, inspection and lubrication. Tools used
constantly on production jobs will need relubrication more
often. Also, tools "out of service" for long periods should be
relubricated before being put back to work.
Accessories

WARNING: Since accessories, other than those
offered by D WALT, have not been tested with this
e
product, use of such accessories with this tool could be
hazardous. To reduce the risk of injury, only D
recommended accessories should be used with
this product.
Recommended accessories for use with your tool
are available at extra cost from your local dealer or
authorized service center. If you need assistance in
locating any accessory, please contact D
Tool Co., 701 East Joppa Road, Towson, MD 21286, call
1-800-4-D WALT (1-800-433-9258) or visit our website:
e
www.dewalt.com.
Maximum Recommended Capacities
Chuck capacity
R.P.M.
Bits, metal drilling
Wood, flat boring
Bits, masonry drilling
Optimum
Maximum
WALT
e
WALT Industrial
e
1/2" (13 mm)
0–3000
1/2" (13 mm)
1–1/2" (40 mm)
1/8" –3/8" (3.2–10 mm)
5/8" (16 mm)