Dewalt D25911K Instruction Manual

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ENGLISH

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.

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.

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.

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

or AC/DC .... alternating or

direct current

...................... Class II Construction

(double insulated)

.......................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

..................... r

ead all documentation

.....................

do not expose to rain

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

Volts

Total Length of Cord in Feet

(meters)

120V 25 (7.6) 50 (15.2) 100 (30.5) 150 (45.7)

240V 50 (15.2) 100 (30.5) 200 (61.0) 300 (91.4)

Ampere Rating

American Wire Gauge

Than

Not

Than

0 6 18 16 16 14

6 10 18 16 14 12

10 12 16 16 14 12

12 16 14 12 Not Recommended



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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Dewalt D25911K 27 LB SDS MAX INLINE CHIPPING HAMMER

Instruction Manual - Page 8