UCTION MANU AL
AL DE INSTR UCCIONES
UCTIV O DE OPERA CIÓN, CENTR OS DE SER VICIO Y PÓLIZA
ADVER TENCIA: LÉASE ESTE INSTR UCTIV O ANTES
DE USAR EL PRODUCT
E W AL T Industr ial T ool Co., 701 Joppa Road, Baltimore , MD 21286
V08) P ar t No. 657416-00 D WD520, D WD525
yright © 2008 D
WA L T
ollowing are trademarks f or one or more D
W AL T pow er tools: the y ellow and b lack color scheme;
“D” shaped air intake g rill; the arra y of p yramids on the handgrip; the kit box configuration; and the
y of lozenge-shaped humps on the surf ace of the tool.
WD520, D WD525
1/2" (13 mm) Heavy-Duty Dual Speed Hammer
teau perf orateur de 13 mm (1/2 po) à deux plages de vitesse, de ser vice intensif
aladro per cutor de dob le rango de velocidad de 13 mm (1/2") para trabajo pesado
If you ha
ve questions or comments, contact us.
our toute question ou tout commentaire, nous contacter .
Si tiene dudas o comentarios,
EW AL T • www .dewalt.com
nitions: Safety Guidelines
The definitions below describe the le
vel of se verity for each signal word. Please read the
manual and pa
y attention to these symbols.
ANGER: Indicates an imminently hazardous situation which, if not av oided, will result
death or serious injury .
ARNING: Indicates a potentially hazardous situation which, if not avoided, could
death or serious injury .
UTION: Indicates a potentially hazardous situation which, if not avoided, ma y
minor or moderate injury .
UTION: Used without the saf ety aler t symbol indicates a potentially hazardous situation
which, if not av
oided, ma y result in property damage .
Y OU HA VE ANY QUESTIONS OR COMMENTS ABOUT THIS OR ANY D E W AL T T OOL,
TOLL FREE A T: 1-800-4-D E W AL T (1-800-433-9258)
ARNING: T o reduce the r isk of injury , read the instruction manual.
General Power T
ool Safety W ar nings
ARNING! Read all safety warnings and all instructions. F ailure to follow the w arnings
and instructions may result in electric shock, fire and/or serious injury
VE ALL W ARNINGS AND INSTRUCTIONS
FOR FUTURE REFERENCE
The term “pow
er tool” in the warnings refers to y our mains-operated (corded) po wer tool or
y-operated (cordless) po wer tool.
WORK AREA SAFETY
Keep w ork area clean and well lit. Cluttered or dar k areas invite accidents .
Do not operate power tools in explosive atmospheres, such as in the presence of
gases or dust. P ower tools create sparks which ma y ignite the dust
Keep children and b ystander s awa y while operating a power tool. Distractions can
cause you to lose control.
2) ELECTRICAL SAFETY
P ower tool plugs m ust match the outlet. Never modify the plug in any wa y . Do not
use any adapter plugs with earthed (grounded) po
wer tools. Unmodified plugs and
matching outlets will reduce risk of electr
void body contact with earthed or grounded surfaces suc h as pipes, radiators,
ranges and refrigerators.
There is an increased risk of electric shock if your body is
thed or grounded.
Do not expose power tools to rain or wet conditions. Water entering a power tool will
increase the risk of electr
Do not abuse the cord. Never use the cord f or carrying, pulling or unplugging the
Keep cord awa y fr om heat, oil, sharp edg es or moving parts. Damaged
or entangled cords increase the risk of electr
When operating a power tool outdoors, use an extension cor d suitable f or outdoor
Use of a cord suitable f or outdoor use reduces the risk of electric shock.
If operating a power tool in a damp location is unav oidable, use a ground fault circuit
interrupter (GFCI) protected supply
. Use of a GFCI reduces the risk of electr ic shock.
3) PERSONAL SAFETY
a) Stay alert, watch what y
ou are doing and use common sense when operating a
Do not use a power tool while you are tired or under the influence of
alcohol or medication. A moment of inattention while operating po wer tools ma y
result in serious personal injur
Use personal pr otective equipment. Al ways wear e ye pr otection. Protectiv e equipment
such as dust mask, non-skid saf
ety shoes, hard hat, or hearing protection used f or
appropriate conditions will reduce personal injur
Pre vent unintentional starting. Ensure the s witch is in the off position bef ore
connecting to power sour
ce and/or battery pack, picking up or carrying the tool.
ying pow er tools with your finger on the s witch or energising power tools that hav e
witch on invites accidents .
Remove any adjusting ke y or wrench bef ore turning the power tool on. A wrench or
y left attached to a rotating par t of the pow er tool ma y result in personal injur y .
Do not overreach. Keep proper f ooting and balance at all times. This enab les better
control of the power tool in une
Dress properl y . Do not wear loose c lothing or jewellery . Keep your hair , clothing and
way fr om mo ving parts. Loose clothes , jew ellery or long hair can be caught in
If devices are pro vided f or the connection of dust extraction and collection facilities,
ensure these are connected and properl
y used. Use of dust collection can reduce
WER T OOL USE AND CARE
Do not f orce the po wer tool. Use the correct power tool for y our application. The
correct power tool will do the job better and saf
er at the rate for which it w as designed.
Do not use the power tool if the switch does not turn it on and off . Any po wer tool
that cannot be controlled with the s
witch is dangerous and must be repaired.
Disconnect the plug from the power sour ce and/or the battery pack fr om the power
tool before making an
y adjustments, changing accessories, or storing power tools.
ventiv e saf ety measures reduce the risk of star ting the power tool accidentally .
Store idle power tools out of the reach of children and do not allo w persons
unfamiliar with the power tool or these instructions to operate the po
wer tool. Pow er
tools are dangerous in the hands of untrained users.
Maintain po wer tools. Check f or misalignment or binding of mo ving parts, breaka ge
of parts and any other condition that may aff
ect the power tool’ s operation. If
have the po wer tool repaired bef ore use. Man y accidents are caused by
poorly maintained power tools.
Keep cutting tools sharp and clean. Proper ly maintained cutting tools with shar p
cutting edges are less likely to bind and are easier to control.
Use the power tool, accessories and tool bits etc., in accor dance with these
instructions taking into account the working conditions and the w
ork to be
Use of the power tool f or operations different from those intended could
result in a hazardous situation.
a) Have your po
wer tool serviced by a qualified repair per son using only identical
This will ensure that the saf ety of the power tool is maintained.
Additional Safety Rules for Hammerdrills
W ear ear protector s with impact drills. Exposure to noise can cause hearing loss.
Use auxiliary handles supplied with the tool. Loss of control can cause personal injur y .
Hold power tools by insulated gripping surfaces when perf orming an operation
where the cutting tool may contact hid
den wiring or its own cor d. Contact with a “live”
wire will make e
xposed metal parts of the tool “liv e” and shoc k the operator .
Use clamps or another practical wa y to secure and support the workpiece to a stable
Holding the work by hand or against your body lea v es it unstable and ma y lead to
loss of control.
W ear ear protector s when hammering f or extented periods of time. Prolonged exposure
to high intensity noise can cause hearing loss.
T emporar y hearing loss or ser ious ear drum
y result from high sound le vels gener ated by hammer drilling.
W ear safety goggles or other e ye pr otection. Hammering and drilling operations cause
chips to fly
. Flying par ticles can cause permanent eye damage .W ear a dust mask or respirator
or applications that generate dust. Ear protection may be required f or most applications.
Alwa ys use the side handle supplied with the tool. Tighten the side handle securel y
K eep a firm grip on the tool at all times. Do not attempt to operate this tool
without holding it with both hands.
Operating this tool with one hand will result in loss of
Breaking through or encounter ing hard materials such as re-bar may be hazardous
Hammer bits and tools get hot during operation. W ear glov es when touching them.
Do not operate this tool for long periods of time. Vibration caused b y hammer action ma y
be harmful to your hands and ar
ms. Use glov es to provide e xtra cushion and limit exposure
by taking frequent rest periods.
Air vents often cover mo ving parts and should be av oided. Loose clothes, je wellery or
long hair can be caught in moving parts.
An extension cor d must ha ve adequate wire size (A WG or American Wire Gauge) for
. The smaller the gauge number of the wire, the greater the capacity of the cab le, that
is 16 gauge has more capacity than 18 gauge.
An undersized cord will cause a drop in line
voltage resulting in loss of po
wer and o v erheating. When using more than one e xtension to
make up the total length, be sure each individual e
xtension contains at least the minim um
. The f ollowing tab le shows the correct siz e to use depending on cord length and
nameplate ampere rating.
If in doubt, use the next hea vier gauge. The smaller the gauge
, the heavier the cord.
Minimum Gauge f
or Cord Sets
olts T otal Length of Cord in Feet (meter s)
50 (15.2) 100 (30.5) 150 (45.7)
100 (30.5) 200 (61.0) 300 (91.4)
6 18 16 16 14
0 1 8 1 6 1 4 1 2
12 16 16 14 12
16 14 12 Not Recommended
ARNING: Al wa ys use eye pr otection. All users and b ystanders must wear e y e protection
orms to ANSI Z87.1.
ARNING: Al ways wear pr oper per sonal hearing protection that conf orms to ANSI
S12.6 (S3.19) during use.
Under some conditions and dur ation of use, noise from this product
y contribute to hearing loss.
ARNING: AL W A YS use safety glasses. Ev er yda y ey eglasses are NO T safety glasses.
Also use f
ace or dust mask if cutting operation is dusty . AL WA YS WEAR CER TIFIED SAFETY
ANSI Z87.1 ey e protection (CAN/CSA Z94.3),
ANSI S12.6 (S3.19) hearing protection,
NIOSH/OSHA/MSHA respiratory protection.
ARNING: Some dust created by power sanding, sa wing, grinding, drilling, and other
construction activities contains chemicals known to cause cancer
, bir th def ects or other
Some examples of these chemicals are:
lead from lead-based paints,
cr ystalline silica from bricks and cement and other masonry products, and
arsenic and chromium from chemically-treated lumber .
our risk from these exposures v aries, depending on how often y ou do this type of work. T o
reduce your e
xposure to these chemicals: work in a well ventilated area, and w ork with approved
ety equipment, such as those dust masks that are specially designed to filter out microscopic
A v oid pr olonged contact with dust from po wer sanding, sawing, grinding, drilling,
and other construction activities.
W ear protective c lothing and wash exposed areas
with soap and water
. Allowing dust to get into your mouth, e yes , or la y on the skin ma y
ption of harmful chemicals.
ARNING: Use of this tool can generate and/or disb urse dust, which ma y cause serious and
y or other injur y . Alw a ys use NIOSH/OSHA approv ed respiratory protection
appropriate for the dust e
xposure . Direct par ticles awa y from f ace and body .
The label on your tool ma y include the f ollo wing symbols. The symbols and their definitions
are as f
........................ volts A ....................... amperes
...................... her tz W ...................... watts
direct current .................... alternating or direct current
...................... Class I Construction
..................... no load speed
(grounded) ..................... ear thing ter minal
Class II Constr uction ..................... safety alert symbol
(double insulated) BPM ................. beats per minute
............... per minute RPM ................. re volutions per min ute