DeWalt DCD789 Originalanweisung Seite 22

EnGLIsH
3. If the tool does not change speeds, confirm that the speed
selection switch is completely engaged in the forward or
back position.
Mode Selection (Fig. A, D)
The mode selection collar 6
operating mode depending upon the planned application.
To select, rotate the collar until the desired symbol aligns with
the arrow.

WARNING: When the mode selection collar is in the drill or
hammerdrill positions, the drill will not clutch. The drill may stall if
overloaded, causing a sudden twist.
symbol
1-15 Screwdriving (higher number = greater torque)
DCD789, DCD799
symbol
1-15
Screwdriving (higher number = greater torque)
Proper Hand Position (Fig. F)

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 the other hand holding the battery pack
Variable Speed Trigger and Forward/Reverse Control
Button (Fig. A)
The tool is turned on and off by pulling and releasing the
variable speed trigger switch
depressed, the higher the speed of the tool. Your tool is
equipped with a brake. The chuck will stop as soon as the
trigger switch is fully released.
A forward/reverse control button
direction of the tool and also serves as a lock-off button.
• To select forward rotation (clockwise), release the trigger and
depress the forward/reverse control button on the right side of
the tool.
• To select reverse (counterclockwise), depress the forward/
reverse control button on the left side of the tool.
nOTE: The centre position of the control button locks the tool
in the off position. When changing the position of the control
button, be sure the trigger is released.
nOTE: Continuous use in variable speed range is not
recommended. It may damage the switch and should
be avoided.
nOTE: The first time the tool is run after changing the direction
of rotation, you may hear a click on start-up. This is normal and
does not indicate a problem.
22
can be used to select the correct
DCD794
Mode
Drilling
Mode
Drilling
Hammerdrilling
1 .
. The farther the trigger is
4
5 determines the rotational
Worklight (Fig. A)
The worklight 8 is activated when the trigger switch
depressed, and will automatically turn off 20 seconds after
the trigger switch is released. If the trigger switch remains
depressed, the worklight will remain on.
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)

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
accessory installation instructions in this manual.

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 1–15 on the mode selection collar
a torque range 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.
3
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.
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 selector
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.
. Refer to Speed Selection.
7
6 are used to set
6 to the desired position.
to the "drill symbol." Refer to
6
4 is