DeWalt D25911 Instruction Manual page 8

English

WARNING: Some dust created by power sanding,
sawing, grinding, drilling, and other construction
activities contains chemicals known to the State
of California to cause cancer, birth defects or
other reproductive harm. Some examples of these
chemicals are:
• lead from lead‑based paints,
• crystalline silica from bricks and cement and other
masonry products, and
• arsenic and chromium from
chemically‑treated lumber.
Your risk from these exposures varies, depending on
how often you do this type of work. To reduce your
exposure to these chemicals: work in a well‑ventilated
area, and work with approved safety equipment, such
as those dust masks that are specially designed to filter
out microscopic particles.
• Avoid prolonged contact with dust from power
sanding, sawing, grinding, drilling, and other
construction activities. Wear protective clothing and
wash exposed areas with soap and water. Allowing
dust to get into your mouth, eyes, or lay on the skin may
promote absorption of harmful chemicals.

WARNING: Use of this tool can generate and/or
disperse dust, which may cause serious and permanent
respiratory or other injury. Always use NIOSH/OSHA
approved respiratory protection appropriate for
the dust exposure. Direct particles away from face
and body.

WARNING: Always wear proper personal hearing
protection that conforms to ANSI S12.6 (S3.19)
during use. Under some conditions and duration
of use, noise from this product may contribute to
hearing loss.
• Wear protective clothing and wash exposed areas
with soap and water. Allowing dust to get into your
mouth, eyes, or lie on the skin may promote absorption
of harmful chemicals. Direct particles away from face
and body.
• Use the appropriate dust extractor vacuum to remove
the vast majority of static and airborne dust. Failure
to remove static and airborne dust could contaminate the
working environment or pose an increased health risk to
the operator and those in close proximity.
• Use clamps or other practical ways to secure and
support the workpiece to a stable platform. Holding
the workpiece by hand or against your body is unstable
and may lead to loss of control and injury.
• Air vents often cover moving parts and should be
avoided. Loose clothes, jewelry or long hair can be caught
in moving parts.
• An extension cord must have adequate wire size
(AWG or American Wire Gauge) for safety. The smaller
the gauge number of the wire, the greater the capacity
of the cable, that is, 16 gauge has more capacity than
18 gauge. An undersized cord will cause a drop in line
voltage resulting in loss of power and overheating. When
using more than one extension to make up the total length,
be sure each individual extension contains at least the
minimum wire size. The following table shows the correct
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size to use depending on cord length and nameplate
ampere rating. If in doubt, use the next heavier gauge. The
lower the gauge number, the heavier the cord.
Minimum gauge for Cord sets
Total length of Cord in Feet
Volts
120V 25 (7.6)
240V 50 (15.2) 100 (30.5) 200 (61.0) 300 (91.4)
Ampere Rating
More not
Than More
Than
0 6 18
6 10 18
10 12 16
12 16 14
The label on your tool may include the following symbols. The
symbols and their definitions are as follows:
V .......................... volts
Hz ........................hertz
min ......................minutes
or DC ......direct current
....................... Class I Construction
(grounded)
.../min .............. per minute
BPM .................... beats per minute
IPM ..................... impacts per minute
OPM .................... oscillations per minute
RPM .................... revolutions per minute
sfpm ................... surface feet per minute
SPM .................... strokes per minute
A ......................... amperes
W ........................ watts
Wh ...................... watt hours
Ah ....................... amp hours
or AC ........... alternating current
Motor
Be sure your power supply agrees with the nameplate
marking. Voltage decrease of more than 10% will cause loss
of power and overheating. These tools are factory tested; if
this tool does not operate, check power supply.
Soft Start Feature
The soft start feature allows the impact rate to build up more
slowly, thus preventing the chisel or point from "bouncing"
around on the masonry when starting up.
Active Vibration Control
The active vibration control neutralizes rebound vibration
from the hammer mechanism. Lowering hand and arm
vibration, it allows more comfortable use for longer periods
of time and extends the life of the unit.
(meters)
50 (15.2) 100 (30.5) 150 (45.7)
American Wire gauge
16 16
16 14
16 14
12 Not Recommended
or AC/DC .... alternating or
direct current
...................... Class II Construction
(double insulated)
n o ....................... no load speed
n ......................... rated speed
PSI....................... pounds per square inch
...................... earthing terminal
..................... safety alert symbol
..................... visible radiation–
do not stare into
the light
..................... wear respiratory
protection
..................... wear eye protection
..................... wear hearing
protection
..................... read all documentation
..................... do not expose to rain
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