English
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.
Hammerdrilling (Fig. F)
DCD797 Only
1. Select the desired speed/torque range using the gear
shifter to match the speed and torque to the planned
operation. Turn the collar
iMPORTAnT: Use carbide-tipped or masonry bits rated
for percussion drilling only.
2. Drill with 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.
3. 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.
4. 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.
nOTE: A smooth, even flow of dust from the hole indicates
proper drilling rate.
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. Exception—Tool
Connect™ functions and mode adjustments require
battery to be installed.
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.
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.
12
to the hammerdrill symbol.
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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.dewalt.com.
Maximum Recommended Capacities
DCD792
WOOD
Auger
7/8" (22 mm)
Paddle
1-1/4" (32 mm)
Twist
1/2" (13 mm)
Self-feed
1-3/8" (35 mm)
Hole saw
2" (50 mm)
METAL
Twist
1/2" (13 mm)
Hole saw
1-3/8" (35 mm)
MASONRY
Carbide
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:
•
WARRAnTY sERViCE: Registering your product will
help you obtain more efficient warranty service in case
there is a problem with your product.
•
COnFiRMATiOn OF OWnERshiP: In case of
an insurance loss, such as fire, flood or theft, your
registration of ownership will serve as your proof
of purchase.
•
FOR YOUR sAFETY: Registering your product will
allow us to contact you in the unlikely event a safety
notification is required under the Federal Consumer
Safety Act.
Register online at www.dewalt.com/register.
WALT
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WALT Industrial
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DCD797
7/8" (22 mm)
1–1/4" (32 mm)
1/2" (13 mm)
1–3/8" (35 mm)
2" (50 mm)
1/2" (13 mm)
1–3/8" (35 mm)
–
1/4" (6.5 mm)
WALT factory
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