DeWalt DCD470 Guide D'utilisation page 13

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.
nOTE: When using a cutting lubricant, be sure not to get
the lubricant on the tool.
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.
Drilling in Masonry

WARNING: Never drill into masonry which is
reinforced such as rebar reinforced concrete.

WARNING: For applications which produce a
considerable amount of dust such as core drilling,
always use an auxiliary dust attachment with an M
Class rated dust extractor such as DWV902M.
Use dry core bits. Keep even force on the drill but not so
much that you crack the brittle material. A smooth, even
flow of dust indicates the proper drilling rate.
Use sharp drill bits only. For masonry, such as brick, cement,
cinder block, etc., use dry diamond core bits
nOTE: Always use core bits designed for dry drilling.
Troubleshooting Drilling in Masonry
Problem
Core bit does not cut.
Material too hard for core bit.
Segments look glazed and polished • Drill in abrasive material to
Dust accumulating in core bit.
Accumulating dust slows down the
drilling speed.
Rotating speed may not be
appropriate.
Segments wear too fast.
MAINTENANCE

WARNING: To reduce the risk of serious personal
injury, turn unit off and remove the battery pack
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
Solution
• Choose a more appropriate core bit
(with softer segments).
re-expose diamond segments.
• Disengage drill bit regularly to
evacuate cuttings. Check filter on
dust extraction. Clean or replace
as required.
• Refer to the Maximum
Recommended Capacities for
proper speed ratings.
• Choose a more appropriate core bit
(with harder segments).
• Reduce the pressure applied on
the core bit.
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.
Accessories

WARNING: Since accessories, other than those
offered by D WALT, have not been tested with this
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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:
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www.D WALT.com.
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MAXiMUM RECOMMEnDED CAPACiTiEs
E-Clutch® System
Mechanical Clutch
RPM
WOOD
Auger
Self-feed 4-5/8" (117 mm)
Hole saw 6-1/4" (158 mm)
METAl
Twist
MAsOnRY
Diamond core bit
Aerated concrete block/
breeze block/cinderblock
Brick
nOTE: For holes in metal larger than 1/2" (13 mm), use hole saws.
Repairs
The charger and battery pack are not serviceable.

WARNING: To assure product SAFETY and
RELIABILITY, repairs, maintenance and adjustment
(including brush inspection and replacement, when
applicable) should be performed by a D
service center or a D WALT authorized service center.
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Always use identical replacement parts.
Register Online
Thank you for your purchase. Register your product now for:
English
WALT
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WALT Industrial
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LOW SPEED HIGH SPEED
YES YES
YES NO
0–400 0–1320
2" (51 mm) 2" (51 mm)
4-5/8" (117 mm)
6" (152 mm)
1/2" (13 mm) 5/16" (8 mm)
6" (152 mm) 6" (152 mm)
5" (127 mm) 5" (127 mm)
WALT factory
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11