DeWalt DCH172 Manual De Instrucciones página 7

moved the side handle against the end of the collar end to
have the clamping piece fully engaged.
To Adjust the Depth Rod (Fig. A)
To adjust the depth rod 2
move rod so that the distance between the end of the rod
and the end of the bit equals the desired drilling depth.
When drilling with depth rod, stop when end of rod reaches
surface of material.
Utility Hook (Fig. C)

WARNING: To reduce the risk of serious personal
injury, ONLY use the tool's utility hook to hang the
tool from a work belt. DO NOT use the utility hook for
tethering or securing the tool to a person or object
during use. DO NOT suspend tool overhead or suspend
objects from the utility hook.

WARNING: To reduce the risk of serious personal
injury, ensure the screw holding the utility hook
is secure.
iMPORTAnT: When attaching or replacing the utility
hook 11 , use only the screw
securely tighten the screw.
The utility hook can be attached to either side of the tool
using only the screw provided, to accommodate left‑ or
right‑handed users. If the hook is not desired at all, it can be
removed from the tool.
To move utility hook, remove the screw that holds the utility
hook in place then reassemble on the opposite side. Be sure
to securely tighten the screw.
OPERATION

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.
Installing and Removing the Battery Pack (Fig. D)

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.
To install the battery pack
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.
To remove the battery pack from the tool, press the release
button 9 and firmly pull the battery pack out of the tool
handle. Insert it into the charger.
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 main
handle 6 , with the other hand on the side handle
Trigger Switch (Fig. A)
To turn the tool on, squeeze the trigger switch
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.
, loosen the side handle 1
13 that is provided. Be sure to
8 into the tool handle, align the
1
3 . To turn
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.
and
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. A, F)
A forward/reverse control button
direction of bit rotation and also serves as a lock‑off button.
To select forward rotation, release the trigger switch
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
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.
Mode Selector (Fig. G)

CAUTION: Do not change to drill or hammerdrill mode
with a chisel bit in the chuck. Personal injury and damage to
tool may result.

CAUTION: Never change the mode while the unit
is running.
For drilling (non‑percussion) push the mode selector
lever 5 in the up position until the line aligns with the drill
bit symbol
16
push the mode selector lever in the down position until the
line aligns to the drill bit and hammer symbol
nOTE: The mode selector lever must be in drill or hammer
mode at all times. There are no operable positions
in between.
Electronic Overload Protection
If the drill bit becomes jammed, the power to the drill
spindle will be interrupted by the activation of the
electronic overload protection. To reactivate the power to
the drive spindle, the tool's trigger should be released and
then depressed. Due to the resulting forces, always hold the
.
tool with both hands and take a firm stance.
Shocks – Active Vibration Control (Fig. A)
For best vibration control, hold the tool with one hand
on the main handle
handle . Apply just enough pressure so the SHOCKS
1
in the rear handle are halfway depressed. The hammer
only needs enough pressure to engage the internal active
4 determines the
7 located on the front of the tool. The
. For rotary hammer drilling (with percussion)
6 and the other hand on the side
English
3
17 .
10
7