DeWalt DCD798 - Tool Operation Details; Mode Selection; Battery Pack Installation; Proper Hand Positioning

ENGLISH
10
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
7
. Refer to SpeedSelection.
• 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
6
are used to
set 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 to the desiredposition.
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.
Worklight (Fig.A)
The worklight
8
is activated when the trigger switch is
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.
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
4
. The farther the trigger is depressed, the
Proper Hand Position (Fig.A, J)

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
3
and the other hand holding the battery pack
1
.
Installing and Removing the Battery Pack
(Fig.I)

WARNING: Ensure the tool/appliance is in the off
position before inserting the batterypack.
NOTE: For best results, make sure your battery pack is
fullycharged.
1. To install the battery pack
1
into the tool handle, align
the battery pack with the rails inside the tool’s handle
and slide it into the handle until the battery pack is firmly
seated in the tool and ensure that it does notdisengage.
2. To remove the battery pack from the tool, press the
battery pack release button
2
and firmly pull the battery
pack out of the tool handle. Insert it into the charger as
described in the charger section of thismanual.
Mode Selection (Fig.H)
The mode selection collar
6
can be used to select
the correct 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.
DCD793
Symbol Mode
Drilling
1-15 Screwdriving (higher number = greater torque)
DCD798
Symbol Mode
Drilling
1-15 Screwdriving (higher number = greater torque)
Hammerdrilling
2. To select Speed 2(high speed setting), turn the tool off
and permit it to stop. Slide the speed selector back (away
from thechuck).
3. If the tool does not change speeds, confirm that the
speed selection switch is completely engaged in the
forward or backposition.
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
5
determines the
rotational 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 center 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.