DeWalt XR LI-ION DCH172 - Page 14

12
ENGLISH
Bit Reccomendations
• For wood, use twist bits, spade bits, power auger bits or
holesaws.
• For metal, use high‑speed steel twist drill bits or holesaws.
Use a cutting lubricant when drilling metals. The exceptions
are cast iron and brass which should be drilleddry.
SDS plus® Bit Holder (Fig.H)
NOTE: Special adapters are needed to use the SDS plus® bit
holder with straight shank bits and hexagonal screwdriver bits.
Refer to OptionalAccessories.
To insert a drill bit or other accessory:
1. Insert the shank of the bit about 19mm into SDS plus® tool
holder
17
.
2. Push and rotate bit until it locks in place. The bit will be
securelyheld.
3. To release bit, pull the sleeve
18
back and remove thebit.
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 disconnect battery pack
before making any adjustments or removing/
installing attachments or accessories. An accidental
start‑up can causeinjury.
Proper Hand Position (Fig.E)

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 side handle
1
,
with the other hand on the main handle
6
.
Trigger Switch (Fig.A)
To turn the tool on, squeeze the trigger switch
3
. To turn the
tool off, release the trigger switch. Your tool is equipped with
a brake. The chuck will stop as soon as the trigger switch is
fullyreleased.
Variable Speed Trigger Switch
The variable speed trigger switch enables you to select the best
speed for a particular application. The farther you squeeze the
trigger switch, the faster the tool will operate. For maximum
tool life, use variable speed only for starting holes orfasteners.
NOTE: Continuous use in variable speed range is not
recommended. It may damage the trigger switch and should
beavoided.
Forward/Reverse Control Button (Fig.F)
A forward/reverse control button
4
determines the direction of
bit rotation and also serves as a lock‑offbutton.
To select forward rotation, release the trigger switch
3
and
depress the forward/reverse control button on the right side of
thetool.
To select reverse, depress the forward/reverse control button
on the left side of thetool.
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: 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.
Worklight (Fig.I)

CAUTION: Do not stare into worklight. Serious eye
injury couldresult.
There is a worklight
7
located on the front of the tool. The
worklight 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.
Operation Modes (Fig.G)

WARNING: Do not select the operating mode when the
tool isrunning.

CAUTION: Never use in Rotary Drilling or Rotary
Hammering mode with a chisel bit in the bit holder.
Personal injury and damage to the the tool mayresult.
Your tool is equipped with a mode selector dial
5
to selectthe
mode appropriate to desiredoperation.
Symbol Mode Application
Rotary Drilling
Screwdriving
Drilling into steel, wood
andplastics
Rotary Hammering
Drilling into concrete
andmasonry
To select an operating mode:
1. Rotate the mode selector dial so that the arrow points to the
symbol corresponding for the desiredmode.
NOTE: The arrow on the mode selector dial
5
must be pointing
at a mode symbol at all times. There are no operable positions
inbetween. It may be necessary to briefly run the motor after
having changed from 'hammering only' to 'rotary' modes in
order to align thegears.
Performing an Application (Fig.A, G)

WARNING: TO REDUCE THE RISK OF PERSONAL
INJURY, ALWAYS ensure workpiece is anchored or
clamped firmly. If drilling thin material, use a wood
“back‑up” block to prevent damage to thematerial.