DeWalt DCD791 Guide D'utilisation page 13

Fig. J
3
DRILLING
Screwdriving (Fig. K)
1. Select the desired speed/torque range using the
gear shifter to match the speed and torque to the
planned operation.
2. Turn the torque adjustment collar
desired position.
nOTE: Use the lowest torque setting required to
seat the fastener at the desired depth. The lower the
number, the lower the torque output.
3. Insert the desired fastener accessory into the chuck as
you would any drill bit.
4. Make some practice runs in scrap or on unseen areas of
the workpiece to determine the proper position of the
torque adjustment collar.
5. Always start with lower torque settings, then advance
to higher torque settings to avoid damage to the
workpiece or fastener.
Fig. K
3
SCREWDRIVING
Hammerdrilling (Fig. L)
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
3 to the
) to the hammerdrill symbol.
3
Fig. L
3
HAMMERDRILLING
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
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.
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
DCD791
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)
English
WALT
e
WALT Industrial
e
DCD796
7/8" (22 mm)
1–1/4" (32 mm)
1/2" (13 mm)
1–3/8" (35 mm)
2" (50 mm)
11