DeWalt DCH966 User manual

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1-800-4-DeWALT
DCH966
60V Max* 41 lbs 1-1/8" (28 mm) Hex Breaker
Démolisseur hexagonal 41lb 1-1/8po (28mm) 60V Max*
Martillo de demolición de 41 lbs 1-1/8" (28 mm) 60V Max*
Instruction Manual
Guide D’utilisation
Manual de instrucciones

English (original instructions) 5
Français (traduction de la notice d’instructions originale) 14
Español (traducido de las instrucciones originales) 24

1
Fig. A DCH966
1 Top handle
2 On/off switch
3 Right side handle
4 Right handle screw
5 Left side handle
6 Left handle screw
7 Air vents
8 Bail/loop style auxiliary handle
9 Handle knob
10 Tool Connect™ mount
11 Battery
12 Battery release button
13 Yellow Service indicator LED
14 1-1/8" (28 mm) hex tool holder
15 Retainer bolt
16 5 mm hexwrench
17 Hexwrench retainer
16
17
12
11
89
15
10
5
6
4
3
13 1
2
7
14
1 Poignée supérieure
2 Interrupteur marche/arrêt
3 Poignée droite
4 Vis de la poignée droite
5 Poignée latérale gauche
6 Vis de la poignée gauche
7 Évents
8 Poignée auxiliaire de style
boucle/anse
9 Bouton de poignée
10 Support de montage
Tool Connect™
11 Bloc-piles
12 Bouton de déblocage du bloc-piles
13 Témoin jaune indicateur d’entretien
14 Support de clé hexagonale
de1-1/8po (28mm)
15 Boulon de retenue
16 Clé hexagonale de 5mm
17 Dispositif de retenue à
cléhexagonale
1 Manija superior
2 Interruptor On/off
(Encendido/Apagado)
3 Manija de lado derecho
4 Tornillo de manija derecha
5 Manija de lado izquierdo
6 Tornillo de manija izquierda
7 Ventilas de aire
8 Manija auxiliar estilo travesaño/lazo
9 Perilla de manija
10 Montaje Tool Connect™
11 Batería
12 Botón de liberación de batería
13 LED indicador de servicio amarillo
14 Soporte de herramienta hexagonal
de 1-1/8" (28 mm)
15 Perno de retenedor
16 Llave hexagonal de 5 mm
17 Retenedor de llave hexagonal

2
Fig.B Fig.C
Fig.D
Fig.G Fig.H
5
6
16
3
4
16
16 17
Fig.E
Indicators/Témoin/Indicador
Stage 1Charging
Chargement de stade 1
Carga Etapa 1
Stage 2Charging
Chargement de stade 2
Carga Etapa 2
Fully Charged
Bloc‑piles Chargé
Unidad Cargada
Hot/Cold Pack Delay
Suspension de Charge Contre
leChaud/Froid
Restraso por Unidad Caliente/
Fría
20
9
24
18
8
21
23 22
19
Fig.F
75–100% charged
Chargé de 75 à 100%
75–100% cargada
51–74% charged
Chargé de 51 à 74%
51–74% cargada
< 50% charged
Chargé de < 50%
< 50% cargada
Pack needs to be charged
Le bloc‑piles doit être rechargé
La batería tiene que cargarse
Indicators/Témoin/Indicador
Charging
Bloc‑piles en Cours
deChargement
Unidad en Proceso de Carga
Fully Charged
Bloc‑piles Chargé
Unidad Cargada
Hot/Cold Pack Delay
Suspension de Charge Contre
leChaud/Froid
Restraso por Unidad Caliente/
Fría

3
Fig.I Fig.J
Fig.K Fig.L
11
1
8
2
12
2514
27
26
3
5
13
Fig.M Fig.N
29
28
10

4
Fig.O

5
ENGLISH
2) Electrical Safety
a ) Power tool plugs must match the outlet. Never
modify the plug in any way. Do not use any
adapter plugs with earthed (grounded) power
tools. Unmodified plugs and matching outlets will
reduce risk of electricshock.
b ) Avoid body contact with earthed or grounded
surfaces, such as pipes, radiators, ranges and
refrigerators. There is an increased risk of electric
shock if your body is earthed orgrounded.
c ) Do not expose power tools to rain or wet
conditions. Water entering a power tool will increase
the risk of electricshock.
d ) Do not abuse the cord. Never use the cord for
carrying, pulling or unplugging the power tool.
Keep cord away from heat, oil, sharp edges or
moving parts. Damaged or entangled cords increase
the risk of electricshock.
e ) When operating a power tool outdoors, use an
extension cord suitable for outdoor use. Use of
a cord suitable for outdoor use reduces the risk of
electricshock.
f ) If operating a power tool in a damp location
is unavoidable, use a ground fault circuit
interrupter (GFCI) protected supply. Use of a GFCI
reduces the risk of electricshock.
3) Personal Safety
a ) Stay alert, watch what you are doing and use
common sense when operating a power tool. Do
not use a power tool while you are tired or under
the influence of drugs, alcohol or medication. A
moment of inattention while operating power tools
may result in serious personalinjury.
b ) Use personal protective equipment. Always wear
eye protection. Protective equipment such as a dust
mask, non‑skid safety shoes, hard hat, or hearing
protection used for appropriate conditions will reduce
personalinjuries.
c ) Prevent unintentional starting. Ensure the switch
is in the off position before connecting to power
source and/or battery pack, picking up or carrying
the tool. Carrying power tools with your finger on the
switch or energizing power tools that have the switch
on invitesaccidents.
d ) Remove any adjusting key or wrench before
turning the power tool on. A wrench or a key left
attached to a rotating part of the power tool may result
in personalinjury.
e ) Do not overreach. Keep proper footing and
balance at all times. This enables better control of the
power tool in unexpectedsituations.
f ) Dress properly. Do not wear loose clothing or
jewelry. Keep your hair, clothing and gloves away
from moving parts. Loose clothes, jewelry or long hair
can be caught in movingparts.
g ) If devices are provided for the connection of dust
extraction and collection facilities, ensure these
are connected and properly used. Use of dust
collection can reduce dust‑relatedhazards.
GENERAL POWER TOOL SAFETY WARNINGS
WARNING: Read all safety warnings, instructions,
illustrations and specifications provided with
this power tool. Failure to follow all instructions
listed below may result in electric shock, fire and/or
seriousinjury.
SAVE ALL WARNINGS AND INSTRUCTIONS
FORFUTUREREFERENCE.
The term "power tool" in the warnings refers to your
mains‑operated (corded) power tool or battery‑operated
(cordless) powertool.
1) Work Area Safety
a ) Keep work area clean and well lit. Cluttered or dark
areas inviteaccidents.
b ) Do not operate power tools in explosive
atmospheres, such as in the presence of
flammable liquids, gases or dust. Power tools create
sparks which may ignite the dust orfumes.
c ) Keep children and bystanders away while
operating a power tool. Distractions can cause you
to losecontrol.
Definitions: Safety Alert Symbols and Words
This instruction manual uses the following safety alert
symbols and words to alert you to hazardous situations and
your risk of personal injury or propertydamage.
DANGER: Indicates an imminently hazardous
situation which, if not avoided, will result in death or
seriousinjury.
WARNING: Indicates a potentially hazardous situation
which, if not avoided, could result in death or
seriousinjury.
CAUTION: Indicates a potentially hazardous situation
which, if not avoided, may result in minor or
moderateinjury.
NOTICE: Indicates a practice not related to
personal injury which, if not avoided, may result in
propertydamage.
(Used without word) Indicates a safety relatedmessage.
Intended Use
Your DCH966 is designed for professional demolition,
chipping and trenching applications in concrete, brick, stone
and other masonrymaterials.
DO NOT use under wet conditions or in presence of
flammable liquids orgases.
Your DCH966 is a professional powertool.
DO NOT let children come into contact with the tool.
Supervision is required when inexperienced operators use
thistool.
WARNING: Read all safety warnings and all
instructions. Failure to follow the warnings and
instructions may result in electric shock, fire and/or
seriousinjury.
WARNING: To reduce the risk of injury, read the
instructionmanual.
English (original instructions)

ENGLISH
6
Additional Safety Instructions for Breakers
• Wear ear protectors. Exposure to noise can cause
hearingloss.
• Use auxiliary handles supplied with the tool. Loss of
control can cause personalinjury.
• Hold power tool by insulated gripping surfaces when
performing an operation where the cutting accessory
may contact hidden wiring. Cutting accessory
contacting a “live” wire may make exposed metal parts
of the power tool “live” and could give the operator an
electricshock.
• Be certain that the material being operated
on does not conceal electric or gas service and
that their locations have been verified with the
utilitycompanies.
• Keep 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 control. Breaking through or encountering hard
materials such as re‑bar may be hazardous as well. Tighten
the side handle securely beforeuse.
• Do not recondition accessories yourself. Chisel
reconditioning should be done by a qualified specialist.
Improperly reconditioned accessories could cause injury.
• Wear gloves when operating tool or changing
bits. Accessible metal parts on the tool and bits may
get extremely hot during operation. Small bits of broken
material may damage barehands.
d ) Under abusive conditions, liquid may be ejected
from the battery; avoid contact. If contact
accidentally occurs, flush with water. If liquid
contacts eyes, additionally seek medical help.
Liquid ejected from the battery may cause irritation
orburns.
e ) Do not use a battery pack or tool that is damaged
or modified. Damaged or modified batteries may
exhibit unpredictable behavior resulting in fire,
explosion or risk ofinjury.
f ) Do not expose a battery pack or tool to
fire or excessive temperature. Exposure to
fire or temperature above 265°F (130°C) may
causeexplosion.
g ) Follow all charging instructions and do not
charge the battery pack or tool outside the
temperature range specified in the instructions.
Charging improperly or at temperatures outside the
specified range may damage the battery and increase
the risk offire.
6) Service
a ) Have your power tool serviced by a qualified
repair person using only identical replacement
parts. This will ensure that the safety of the power tool
ismaintained.
b ) Never service damaged battery packs. Service
of battery packs should only be performed by the
manufacturer or authorized serviceproviders.
h ) Do not let familiarity gained from frequent use of
tools allow you to become complacent and ignore
tool safety principles. A careless action can cause
severe injury within a fraction of asecond.
4) Power Tool Use and Care
a ) Do not force the power tool. Use the correct power
tool for your application. The correct power tool
will do the job better and safer at the rate for which it
wasdesigned.
b ) Do not use the power tool if the switch does not
turn it on and off. Any power tool that cannot be
controlled with the switch is dangerous and must
berepaired.
c ) Disconnect the plug from the power source and/
or remove the battery pack, if detachable, from
the power tool before making any adjustments,
changing accessories, or storing power tools. Such
preventive safety measures reduce the risk of starting
the power toolaccidentally.
d ) Store idle power tools out of the reach of children
and do not allow persons unfamiliar with the
power tool or these instructions to operate the
power tool. Power tools are dangerous in the hands of
untrainedusers.
e ) Maintain power tools and accessories. Check
for misalignment or binding of moving parts,
breakage of parts and any other condition
that may affect the power tool’s operation. If
damaged, have the power tool repaired before
use. Many accidents are caused by poorly maintained
powertools.
f ) Keep cutting tools sharp and clean. Properly
maintained cutting tools with sharp cutting edges are
less likely to bind and are easier tocontrol.
g ) Use the power tool, accessories and tool bits, etc.
in accordance with these instructions, taking
into account the working conditions and the
work to be performed. Use of the power tool for
operations different from those intended could result in
a hazardoussituation.
h ) Keep handles and grasping surfaces dry, clean
and free from oil and grease. Slippery handles and
grasping surfaces do not allow for safe handling and
control of the tool in unexpectedsituations.
5) Battery Tool Use and Care
a ) Recharge only with the charger specified by the
manufacturer. A charger that is suitable for one type
of battery pack may create a risk of fire when used with
another batterypack.
b ) Use power tools only with specifically designated
battery packs. Use of any other battery packs may
create a risk of injury andfire.
c ) When battery pack is not in use, keep it away
from other metal objects, like paper clips, coins,
keys, nails, screws or other small metal objects,
that can make a connection from one terminal to
another. Shorting the battery terminals together may
cause burns or afire.

7
ENGLISH
READ ALL INSTRUCTIONS
Important Safety Instructions for All
Battery Packs
WARNING: Read all safety warnings, instructions,
and cautionary markings for the battery pack,
charger and product. Failure to follow the
warnings and instructions may result in electric
shock, fire and/or seriousinjury.
• Do not charge or use the battery pack in explosive
atmospheres, such as in the presence of flammable
liquids, gases or dust. Inserting or removing the battery
pack from the charger may ignite the dust orfumes.
• NEVER force the battery pack into the charger. DO
NOT modify the battery pack in any way to fit into a
non‑compatible charger as battery pack may rupture
causing serious personal injury. Consult the chart at the
end of this manual for compatibility of batteries andchargers.
• Charge the battery packs only in DeWALTchargers.
• DO NOT splash or immerse in water or otherliquids.
BATTERIES AND CHARGERS
The battery pack is not fully charged out of the carton.
Before using the battery pack and charger, read the
safety instructions below and then follow charging
proceduresoutlined. When ordering replacement battery
packs, be sure to include the catalog number andvoltage.
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.......................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
• Air vents often cover moving parts and should be
avoided. Loose clothes, jewelry or long hair can be caught
in movingparts.
CAUTION: When not in use, place tool on its
side on a stable surface where it will not cause
a tripping or falling hazard. Some tools with large
battery packs will stand upright on the battery pack
but may be easily knockedover.
Additional Safety Information
WARNING: Never modify the power tool or any part of
it. Damage or personal injury couldresult.
WARNING: ALWAYS use safety glasses. Everyday
eyeglasses are NOT safety glasses. Also use face or
dust mask if cutting operation is dusty. ALWAYS WEAR
CERTIFIED SAFETYEQUIPMENT:
• ANSI Z87.1 eye protection (CAN/CSA Z94.3),
• ANSI S12.6 (S3.19) hearing protection,
• NIOSH/OSHA/MSHA respiratoryprotection.
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 dust masks that are specially designed to filter out
microscopicparticles.
• 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.
• Never lay the tool down until the bit has come to a
complete stop. Moving bits could causeinjury.
• Do not strike jammed bits with a hammer to dislodge
them. Fragments of metal or material chips could dislodge
and causeinjury.
• Ensure the chisel is secured in place before operating
thetool.
• In cold‑weather conditions or when the tool has not
been used for a longer period of time, let the tool run
with no load for several minutes beforeuse.
• When working above ground level ensure the area
below isclear.
• Do not touch the chisel or the parts close to the
chisel immediately after operation, as they may be
extremely hot and cause burns to theskin.
• Always direct the power cable to the rear, away from
thechisel.
• Do not operate this tool for long periods of time.
Vibration caused by hammer action may be harmful to
your hands and arms. Use gloves to provide extra cushion
and limit exposure by taking frequent restperiods.

ENGLISH
8
Important Safety Instructions for All
Battery Chargers
WARNING: Read all safety warnings, instructions,
and cautionary markings for the battery pack,
charger and product. Failure to follow the
warnings and instructions may result in electric
shock, fire and/or seriousinjury.
• DO NOT attempt to charge the battery pack with
any chargers other than a DeWALT charger. DeWALT
chargers and battery packs are specifically designed to
worktogether.
The RBRC® Seal
Please take your spent battery packs to
an authorized DeWALT service center or
to your local retailer for recycling. In some
areas, it is illegal to place spent battery
packs in the trash. You may also contact your local recycling
center for information on where to drop off the spent
battery pack. Do not place in curbside recycling. For more
information visit www.call2recycle.org or call the toll-free
number in the RBRC®Seal.
RBRC® is a registered trademark of Call 2Recycle,Inc.
Shipping the DeWALT FLEXVOLT™ Battery Pack
The DeWALT FLEXVOLT™ battery pack has a battery cap that
should be used when shipping the batterypack.
Attach the cap to the battery pack to ready it for shipping.
This converts the battery pack to three separate 20V
batteries. The three batteries have the Watt hour rating
labeled“Shipping”on the battery pack. If shipping without
the cap or in a tool, the pack is one battery at the Watt hour
rating labeled"Use."
Example battery pack label:
USE: 120Wh SHIPPING: 3x 40Wh
In this example, the battery pack is three batteries with
40Watt hours each when using the cap. Otherwise, the
battery pack is one battery with 120Watthours.
Transportation
WARNING: Fire hazard. Do not store, carry, or
transport the battery pack so that metal objects
can contact exposed battery terminals. For
example, do not place the battery pack in aprons,
pockets, tool boxes, product kit boxes, drawers, etc.,
with loose nails, screws, keys, coins, hand tools, etc.
When transporting individual battery packs, make
sure that the battery terminals are protected and well
insulated from materials that could contact them and
cause a short circuit. NOTE: Li‑ion battery packs should
not be put in checked baggage on airplanes and must
be properly protected from short circuits if they are in
carry‑onbaggage.
• DO NOT allow water or any liquid to enter batterypack.
• Do not store or use the tool and battery pack in
locations where the temperature may reach or
exceed 104°F (40°C) (such as outside sheds or metal
buildings in summer). For best life, store battery packs in
a cool, drylocation.
NOTE: Do not store the battery packs in a tool with
the trigger switch locked on. Never tape the trigger
switch in the ONposition.
• Do not incinerate the battery pack even if it is severely
damaged or is completely worn out. The battery pack
can explode in a fire. Toxic fumes and materials are created
when lithium‑ion battery packs areburned.
• Do not expose a battery pack or appliance to fire or
excessive temperature. Exposure to fire or temperature
above 265°F (130°C) may causeexplosion.
• Follow all charging instructions and do not charge the
battery pack or appliance outside of the temperature
range specified in the instructions. Charging improperly or
at temperatures outside of the specified range may damage
the battery and increase the risk offire.
• If battery contents come into contact with the skin,
immediately wash area with mild soap and water. If
battery liquid gets into the eye, rinse water over the open
eye for 15minutes or until irritation ceases. If medical
attention is needed, the battery electrolyte is composed of a
mixture of liquid organic carbonates and lithiumsalts.
• Contents of opened battery cells may cause
respiratory irritation. Provide fresh air. If symptoms
persist, seek medicalattention.
• Battery liquid may be flammable if exposed to spark
orflame.
• Never attempt to open the battery pack for any
reason. If the battery pack case is cracked or
damaged, do not insert into the charger. Do not crush,
drop or damage the battery pack. Do not use a battery pack
or charger that has received a sharp blow, been dropped,
run over or damaged in any way (e.g., pierced with a nail,
hit with a hammer, stepped on). Damaged battery packs
should be returned to the service center forrecycling.
Storage Recommendations
The best storage place is one that is cool and dry, away
from direct sunlight and excess heat or cold. Store the fully
charged battery pack out of thecharger.
Battery Pack Cleaning Instructions
Dirt and grease may be removed from the exterior of the
battery pack using a cloth or soft non-metallic brush. Do not
use water or any cleaningsolutions.
Fuel Gauge Battery Packs (Fig.B)
Some battery packs include a fuel gauge. When the fuel
gauge button is pressed and held, the LED lights will
indicate the approximate level of charge remaining. This
does not indicate tool functionality and is subject to
variation based on product components, temperature, and
end-userapplication.