DeWalt DCF809 Bedienungsanleitung Seite 14

English
OPERATION
Instructions for Use

WARNING: Always observe the safety instructions and
applicable regulations.

WARNING: To reduce the risk of serious personal
injury, turn tool off and remove the battery pack
before making any adjustments or removing/
installing attachments or accessories. An accidental
start‑up can cause injury.
Proper Hand Position (Fig. C)

WARNING: To reduce the risk of serious personal injury,
ALWAYS use proper hand position as shown.

WARNING: To reduce the risk of serious personal
injury, ALWAYS hold securely in anticipation of a
sudden reaction.
Proper hand position requires one hand on the main handle
and one hand on the battery pack.
Worklight (Fig. A)
There is a worklight 8 located on the foot of the tool. The
worklight is activated when the trigger switch is depressed.
When the trigger is released, the worklight will stay illuminated
for up to 20 seconds.
nOTE: The worklight is for lighting the immediate work surface
and is not intended to be used as a flashlight.
Performing an Application (Fig. A, D)

WARNING: To reduce the risk of personal injury,
ALWAYS ensure workpiece is anchored or clamped firmly.

WARNING: Always wait until the motor has come to
a complete standstill before changing the direction
of rotation.
Prior to performing work:
• Set the speed selector
• Install the appropriate bit or accessory into the chuck. Refer
to Installing a Bit or Accessory into a Keyless Chuck.

WARNING:
• Do not use this tool to mix or pump easily combustible
or explosive fluids (benzine, alcohol, etc.).
• Do not mix or stir flammable liquids
labeled accordingly.
Screwdriving
Your tool has a clutch with adjustable torque for driving and
removing a wide array of fastener shapes and sizes. The numbers
on the mode selection collar
for screwdriving. The higher the number on the collar, the higher
the torque and the larger the fastener which can be driven.
1. Turn the mode selection collar
Refer to Mode Selection.
2. Pull the trigger switch applying pressure in a straight line
with the bit until the fastener is seated at the desired depth
in the workpiece.
12
7 . Refer to Speed Selection.
6 are used to set a torque range
6 to the desired position.
Recommendations for screwdriving
• Start with lower torque settings, then advance to higher
torque settings to avoid damage to the workpiece
or fastener.
• Make some practice runs in scrap or on unseen areas of the
workpiece to determine the proper position of the mode
selection collar.
Drilling
1. Turn the mode selection collar
to Mode Selection.
2. Place drill bit in contact with the workpiece.
nOTE: Use sharp drill bit only.
3. Pull the trigger 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.
3
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 (7.9 mm to 12.7 mm) in steel can be made
easier if a pilot hole (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 work piece.
Hammerdrilling

WARNING: Wear proper respiratory protection. Collect
residual dust with a vacuum or dust collection system
designed for the application.
DCD709 Only
iMPORTAnT: Use carbide‑tipped or masonry bits rated for
percussion drilling only.
1. Select the desired speed/torque range using the speed
selector 7 to match the speed and torque to the planned
operation. Turn the mode selection collar
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.
6 to the drill symbol. Refer
6 to the