DeWalt DCD999 - Maintenance

ENGLISH
10
Tool Connect™ Chip (Fig. H)

WARNING: To reduce the risk of injury, remove
accessories from the tool chuck before any Tool
Connect™interaction.
Your tool is Tool Connect™ Chip ready and has a location for
installation of a Tool Connect™ Chip.
Tool Connect™ Chip is an optional application for your smart
device (such as a smart phone or tablet) that connects
the device to utilize the mobile application for inventory
management functions.
Refer to Tool Connect™ Chip Instruction Sheet for
moreinformation.
Installing the Tool Connect™ Chip
1. Remove the retaining screws
16
that hold the Tool
Connect™ Chip protective cover
17
into the tool.
2. Remove the protective cover and insert the Tool
Connect™ Chip into the empty pocket
18
.
3. Ensure that the Tool Connect™ Chip is flush with the
housing. Secure it with the retaining screws and tighten
the screws.
4. Refer to Tool Connect™ Chip Instruction Sheet for
further instructions.
Accessories

WARNING: Since accessories, other than those offered
by
DeWALT
, have not been tested with this product, use
of such accessories with this tool could be hazardous.
To reduce the risk of injury, only
DeWALT
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
DeWALT
call 1-800-4-
DeWALT
(1-800-433-9258) or
visit our website: www.dewalt.com.
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.
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.
Drilling
1. Turn the mode selection collar
5
to the drillsymbol.
Refer to ModeSelection.
2. Place drill bit in contact with theworkpiece.
NOTE: Use sharp drill bitonly.
3. Pull the trigger switch applying pressure in a straight line
with the bit until it reaches the desireddepth.

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.
4. Keep the motor running when pulling the bit back out of
a drilled hole to preventjamming.
Recommendations for Drilling
• When drilling, always apply pressure in a straight line
with the bit, but do not push hard enough to stall the
motor or deflect thebit.
• IF THE DRILL STALLS:
- RELEASE TRIGGER SWITCH IMMEDIATELY,
remove drill bit from work, and determine cause
ofstalling.
‑ DO NOT DEPRESS TRIGGER SWITCH ON AND OFF
IN AN ATTEMPT TO START A STALLED DRILL—
THIS CAN DAMAGE THEDRILL.
‑ To minimize stalling or breaking through the material,
reduce pressure on drill and ease the bit through the
last fractional part of thehole.
• Large holes (5/16" to 1/2" [7.9 mm to 12.7 mm]) in steel
can be made easier if a pilot hole (5/32" to 3/16" [4 mm
to 4.8 mm]) is drilledfirst.
• If drilling thin material or material that is prone to splinter,
use a wood “back-up” block to prevent damage to
theworkpiece.
Hammerdrilling
IMPORTANT: Use carbide-tipped or masonry bits rated for
percussion drillingonly.
1. Select the desired speed/torque range using the speed
selector
8
to match the speed and torque to the
planned operation. Turn the mode selection collar
5
to
the hammerdrillsymbol.
2. Pull the trigger, applying just enough pressure on the
hammer to keep it from bouncing excessively or "rising"
off the bit.
Recommendations for Hammerdrilling
• Too much force will cause slower drilling speeds,
overheating, and a lower drillingrate.
• A smooth even flow of material indicates the proper
drillingrate.
• Drill straight, keeping the bit at a right angle to the work.
Do not exert side pressure on the bit when drillling as
this will cause clogging of the bit flutes and a slower
drillingspeed.
• When drilling deep holes, if the hammer speed starts to
drop off, pull the bit partially out of the hole with tool still
running to help clear debris from thehole.