DeWalt DCD793 User manual

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1‑800‑4‑DeWALT
DCD793
20V Max* Cordless Drill Driver
Perceuse‑visseuse sans fil 20V max*
Taladro/Destornillador inalámbrico 20 V Máx*
DCD798
20V Max* Cordless Hammer Drill
Perceuse à percussion sans fil 20V max*
Rotomartillo Inalámbrico 20 V Máx*
Instruction Manual
Guide D’utilisation
Manual de instrucciones

1
Fig. A
Components
1 Battery pack
2 Battery pack release button
3 Main handle
4 Variable‑speed trigger switch
5 Forward/reverse control button
6 Mode selection collar
7 Speed selector
8 Worklight
9 Keyless chuck
10 Chuck sleeve
Composants
1 Bloc‑piles
2 Bouton de libération du bloc‑piles
3 Poignée principale
4 Gâchette à vitesse variable
5 Bouton de commande avant/arrière
6 Collier de sélection du mode
7 Sélecteur de vitesses
8 Lampe de travail
9 Mandrin sans clé
10 Douille du mandrin
Componentes
1 Paquete de batería
2 Botón de liberación de paquete
de batería
3 Manija principal
4 Interruptor de gatillo de velocidad
variable
5 Botón de control de avance/reversa
6 Collar de selección de modo
7 Selector de velocidad
8 Luz de trabajo
9 Mandril sin llave
10 Camisa de mandril
1
3
2
4
8
10
9
6
7
5

2
Fig.B Fig.C
Fig.D Fig.E
Fig.F
9
10
14
11
12
13
7
Fig.G
1
2
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.H
6
1
2
Fig.I
3
1
Fig.J

ENGLISH
4
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.
(Used without word) Indicates a safety relatedmessage.
NOTICE: Indicates a practice not related to
personal injury which, if not avoided, may result in
propertydamage.
Intended Use
This drill/driver/hammerdrill is designed for professional
drilling and screwdriving and hammerdrillingapplications.
DO NOT use under wet conditions or in presence of
flammable liquids orgases.
DO NOT let children come into contact with the tool.
Supervision is required when inexperienced operators use
thistool.
English (original instructions)
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.

5
ENGLISH
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.
DRILL/IMPACT DRILL SAFETYWARNINGS
1) Safety Instructions for All Operations
a ) Wear ear protectors when impact drilling.
Exposure to noise can cause hearingloss.
b ) Hold the power tool by insulated gripping
surfaces, when performing an operation where
the cutting accessory or fasteners may contact
hidden wiring. Cutting accessory or fastener
contacting a “live” wire may make exposed metal parts
of the power tool “live” and could give the operator an
electricshock.
2) Safety Instructions When Using Long
DrillBits
a ) Never operate at higher speed than the maximum
speed rating of the drill bit. At higher speeds, the
bit is likely to bend if allowed to rotate freely without
contacting the workpiece, resulting in personalinjury.
b ) Always start drilling at low speed and with the
bit tip in contact with the workpiece. At higher
speeds, the bit is likely to bend if allowed to rotate
freely without contacting the workpiece, resulting in
personalinjury.
c ) Apply pressure only in direct line with the bit
and do not apply excessive pressure. Bits can
bend causing breakage or loss of control, resulting in
personalinjury.

ENGLISH
6
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.
• 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.
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
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 those 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 lay 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 work 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.
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 Warnings for Drills
• Do not operate this tool for long periods of time.
Vibration caused by the operating action of this tool may
cause permanent injury to fingers, hands, and arms. Use
gloves to provide extra cushion, take frequent rest periods,
and limit daily time ofuse.
• Hammer bits and tools get hot during operation.
Wear gloves when touchingthem.

7
ENGLISH
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.
• These chargers are not intended for any uses other
than charging DeWALT rechargeable battery packs.
Charging other types of battery packs may cause them to
overheat and burst, resulting in personal injury, property
damage, fire, electric shock orelectrocution.
• Do not expose the charger to rain orsnow.
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.
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.
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.
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,

ENGLISH
8
• Always unplug the charger from the power supply
when there is no battery pack in thecavity.
Charging a Battery (Fig.C, D)
1. Plug the charger into an appropriate outlet.
2. Insert and fully seat battery pack 1. The red charging
light(s) will continuously blink whilecharging.
3. Charging is complete when the red charging light(s)
remain(s) continuously ON. Battery pack can be left in
charger or removed. Some chargers require the battery
pack release button 2 to be pressed forremoval.
WARNING:
Only charge batteries in air temperature over
40° F (4.5° C)and below 104° F (+40°C).
4. Charger will not charge a faulty battery pack, which may
be indicated by the charging light(s) staying OFF. Take
charger and battery pack to an authorized service center
if light(s) stay(s)OFF.
NOTE: Refer to label near charging light(s) on charger
for blinkpatterns. Older chargers may have additional
information and/or may not have a yellow indicatorlight.
NOTE: To remove the battery pack, some chargers
require the battery pack release button to bepressed.
Hot/Cold Pack Delay
When the charger detects a battery pack that is too hot
or too cold, it automatically starts a Hot/Cold Pack Delay,
suspending charging until the battery pack has reached an
appropriate temperature. The charger then automatically
switches to the pack charging mode. This feature ensures
maximum battery packlife.
A cold battery pack may charge at a slower rate than a warm
batterypack.
The hot/cold pack delay will be indicated by the red light(s)
continuing to blink but with the yellow light continuously
ON. Once the battery pack has reached an appropriate
temperature, the yellow light will turn OFF and the charger
will resume the chargingprocedure.
DCB118 and DCB1112 Chargers
The DCB118 and DCB1112 chargers are equipped with
an internal fan designed to cool the battery pack. The fan
will turn on automatically when the battery pack needs to
becooled.
Never operate the charger if the fan does not operate
properly or if ventilation slots are blocked. Do not permit
foreign objects to enter the interior of thecharger.
Electronic Protection System
Li‑Ion tools are designed with an Electronic Protection
System that will protect the battery pack against overloading,
overheating or deep discharge. The tool will automatically
turn off and the battery pack will need to berecharged.
Important Charging Notes
1. Longest life and best performance can be obtained if
the battery pack is charged when the air temperature
is between 65°F – 75°F (18°C– 24°C). DO NOT charge
when the battery pack is below +40°F (+4.5°C), or
above +104°F (+40°C). This is important and will
prevent serious damage to the batterypack.
• Do not allow water or any liquid to entercharger.
• Pull by the plug rather than the cord when
disconnecting the charger. This will reduce the risk of
damage to the electric plug andcord.
• Make sure that the cord is located so that it will not
be stepped on, tripped over or otherwise subjected to
damage orstress.
• Do not use an extension cord unless it is absolutely
necessary. Use of improper extension cord could result in
risk of fire, electric shock orelectrocution.
• When operating a charger outdoors, always provide
a dry location and use an extension cord suitable
for outdoor use. Use of a cord suitable for outdoor use
reduces the risk of electricshock.
• An extension cord must have adequate wire size
(AWG or American Wire Gauge) for safety. The smaller
the gauge number of the wire, the heavier the cord and
thus the greater its capacity. An undersized cord will
cause a drop in line voltage resulting in loss of power and
overheating. The following table shows the correct size
to use depending on total length of all extension cords
plugged together, and nameplate ampere rating. If in
doubt, use the next heaviergauge.
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)
Ampere Rating
American Wire Gauge
More Than Not More
Than
0 6 18 16 16 14
610 18 16 14 12
10 12 16 16 14 12
12 16 14 12 Not Recommended
• Do not place any object on top of the charger or place
the charger on a soft surface that might block the
ventilation slots and result in excessive internal heat.
Place the charger in a position away from any heat source.
The charger is ventilated through slots in the top and the
bottom of thehousing.
• Do not operate the charger with a damaged cord
orplug. Have them replacedimmediately.
• Do not operate the charger if it has received a sharp
blow, been dropped or otherwise damaged in any
way. Take it to an authorized servicecenter.
• Do not disassemble the charger; take it to an
authorized service center when service or repair
is required. Incorrect reassembly may result in a risk of
electric shock, electrocution orfire.
• The charger is designed to operate on standard
120V household electrical power. Do not attempt to
use it on any other voltage. This does not apply to the
vehicularcharger.
• Foreign materials of a conductive nature, such as, but
not limited to, grinding dust, metal chips, steel wool,
aluminum foil or any buildup of metallic particles
should be kept away from the charger cavities and
ventilation slots.

9
ENGLISH
Speed Selection (Fig.G)
The tool features two speed settings for greaterversatility.
NOTE: Do not change speeds when the tool is running.
Always allow the tool to come to a complete stop before
changingspeed.
1. To select Speed 1(high torque setting), turn the tool off
and permit it to stop. Slide the speed selector7 forward
(towards thechuck).
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 a Bit or Accessory into a Keyless
Chuck (Fig.F)
WARNING: Do not attempt to tighten drill bits (or
any other accessory) by gripping the front part of the
chuck and turning the tool on. Damage to the chuck
and personal injury may result. Always lock off trigger
switch and disconnect tool from power source when
changingaccessories.
WARNING: Always ensure the bit is secure before
starting the tool. A loose bit may eject from tool
causing possible personalinjury.
To insert a drill bit 14 or other accessory, follow thesesteps.
1. Turn tool off and remove batterypack.
2. Grasp the black chuck sleeve 10 with one hand and
use the other hand to secure the tool. Rotate the
sleeve counterclockwise far enough to accept the
desiredaccessory.
3. Insert the accessory about 3/4" (19 mm) into the chuck
and tighten securely by grasping and rotating the chuck
sleeve10 clockwise with one hand while holding
the tool with the other. When the chuck 9 is nearly
tightened you will hear a clicking sound. After 8‑12 clicks
the chuck is securely tightened around the accessory.
Your tool is equipped with an automatic spindle lock
mechanism. This allows you to open and close the chuck
with onehand.
4. Be sure to tighten chuck with one hand on the
chuck sleeve and one hand holding the tool for
maximumtightness.
5. To release the accessory, repeat steps 1and 2above.
Belt Hook and Bit Clip (Fig.E)
(OptionalAccessory)
WARNING:To reduce the risk of serious personal
injury, ONLY use the tool’s belt hook to hang the
tool from a work belt. DO NOT use the belt hook
for tethering or securing the tool to a person or object
during use. DO NOT suspend tool overhead or suspend
objects from the belthook.
WARNING:To reduce the risk of serious personal
injury, ensure the screw holding the belt hook issecure.
ASSEMBLY AND ADJUSTMENTS
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.
Wall Mounting
Some DeWALT chargers are designed to be wall mountable
or to sit upright on a table or work surface. If wall mounting,
locate the charger within reach of an electrical outlet, and
away from a corner or other obstructions which may impede
air flow. Use the back of the charger as a template for the
location of the mounting screws on the wall. Mount the
charger securely using drywall screws (purchased separately)
at least 1”(25.4mm) long, with a screw head diameter of
0.28–0.35”(7–9mm), screwed into wood to an optimal
depth leaving approximately 7/32”(5.5 mm) of the screw
exposed. Align the slots on the back of the charger with the
exposed screws and fully engage them in theslots.
SAVE THESE INSTRUCTIONS FOR
FUTURE USE
2. The charger and battery pack may become warm to the
touch while charging. This is a normal condition, and
does not indicate a problem.To facilitate the cooling of
the battery pack after use, avoid placing the charger or
battery pack in a warm environment such as in a metal
shed or an uninsulatedtrailer.
3. If the battery pack does not charge properly:
a. Check operation of receptacle by plugging in a lamp
or other appliance;
b. Check to see if receptacle is connected to a light
switch which turns power off when you turn out
thelights;
c. If charging problems persist, take the tool, battery
pack and charger to your local servicecenter.
4. You may charge a partially used pack whenever you
desire with no adverse effect on the batterypack.
Charger Cleaning Instructions
WARNING:Shock hazard. Disconnectthe charger
from the AC outlet before cleaning. Dirt and grease
may be removed from the exterior of the charger using
a cloth or soft non‑metallic brush. Do not use water or
any cleaningsolutions.
IMPORTANT: When attaching or replacing the belt hook or
bit clip, use only the screw11 that is provided. Be sure to
securely tighten thescrew.
The belt hook12 and bit clip13 can be attached to
either side of the tool using only the screw provided, to
accommodate left‑ or right‑ handed users. If the belt hook
or bit clip is not desired at all, they can be removed from
thetool.
To move the belt hook or bit clip, remove the screw that
holds it in place then reassemble on the opposite side. Be
sure to securely tighten thescrew.

ENGLISH
10
Performing an Application (Fig.A)
WARNING: To reduce the risk of personal
injury, ALWAYS ensure workpiece is anchored or
clampedfirmly.
WARNING: Always wait until the motor has come to
a complete standstill before changing the direction
ofrotation.
Prior to Performing Work
• Set the speed selector7. Refer to SpeedSelection.
• Install the appropriate bit or accessory into the chuck.
Refer to accessory installation instructions in thismanual.
WARNING:
• Do not use this tool to mix or pump easily
combustible or explosive fluids (benzine, alcohol,etc.).
• Do not mix or stir flammable liquids
labeledaccordingly.
Screwdriving
Your tool has a clutch with adjustable torque for driving
and removing a wide array of fastener shapes and sizes. The
numbers 1–15 on the mode selection collar6 are used to
set a torque range for screwdriving. The higher the number
on the collar, the higher the torque and the larger the
fastener which can bedriven.
1. Turn the mode selection collar to the desiredposition.
Refer to Mode Selection.
2. Pull the trigger switch applying pressure in a straight line
with the bit until the fastener is seated at the desired
depth in theworkpiece.
Worklight (Fig.A)
The worklight8 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.
Variable Speed Trigger and Forward/
Reverse Control Button (Fig.A)
The tool is turned on and off by pulling and releasing the
variable speed trigger4. The farther the trigger is depressed, the
Proper Hand Position (Fig.A, J)
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3 and the other hand holding the battery pack1.
Installing and Removing the Battery Pack
(Fig.I)
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.
1. To install the battery pack1 into the tool handle, align
the 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.
2. To remove the battery pack from the tool, press the
battery pack release button2 and firmly pull the battery
pack out of the tool handle. Insert it into the charger as
described in the charger section of thismanual.
Mode Selection (Fig.H)
The mode selection collar6 can be used to select
the correct operating mode depending upon the
plannedapplication.
To select, rotate the collar until the desired symbol aligns
with thearrow.
WARNING: When the mode selection collar is in the
drill or hammerdrill positions, the drill will not clutch.
The drill may stall if overloaded, causing a suddentwist.
DCD793
Symbol Mode
Drilling
1-15 Screwdriving (higher number = greater torque)
DCD798
Symbol Mode
Drilling
1-15 Screwdriving (higher number = greater torque)
Hammerdrilling
2. To select Speed 2(high speed setting), turn the tool off
and permit it to stop. Slide the speed selector back (away
from thechuck).
3. If the tool does not change speeds, confirm that the
speed selection switch is completely engaged in the
forward or backposition.
higher the speed of the tool.Your tool is equipped with a brake.
The chuck will stop as soon as the trigger switch is fullyreleased.
A forward/reverse control button5 determines the
rotational direction of the tool and also serves as a
lock‑offbutton.
• To select forward rotation (clockwise), release the trigger
and depress the forward/reverse control button on the
right side of thetool.
• To select reverse (counterclockwise), depress the forward/
reverse control button on the left side of thetool.
NOTE: 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: Continuous use in variable speed range is not
recommended. It may damage the switch and should
beavoided.
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.

11
ENGLISH
Repairs
The charger and batteries are notserviceable. There are no
serviceable parts inside the charger or batterypack.
WARNING: To assure product SAFETY and RELIABILITY,
repairs, maintenance and adjustment (including brush
inspection and replacement, when applicable) should
be performed by a DeWALT factory service center or a
DeWALT‑authorized service center. Always use identical
replacementparts.
Accessories
WARNING:
Since accessories, other than those offered
by DeWALT, have not been tested with this product, use
of such accessories with this product could be hazardous.
To reduce the risk of injury, only DeWALT‑recommended
accessories should be used with thisproduct.
Recommended accessories for use with your product are
available at extra cost from your local dealer or authorized
service center. If you need assistance in locating any
accessory, please contact DeWALT at 1-800-4-DeWALT
(1-800-433-9258) or visit our website: www.dewalt.com.
Cleaning
WARNING: Blow dirt and dust out of all air vents with
clean, dry air at least once a week. To minimize the risk
of eye injury, always wear ANSI Z87.1‑approved eye
protection when performing thisprocedure.
WARNING: Never use solvents or other harsh
chemicals for cleaning the non‑metallic parts of the
tool. These chemicals may weaken the plastic materials
used in these parts. Use a cloth dampened only with
water and mild soap. Never let any liquid get inside the
tool; never immerse any part of the tool into aliquid.
MAINTENANCE
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.
Your DeWALT power tool has been designed to operate
over a long period of time with a minimum of maintenance.
Continuous satisfactory operation depends upon proper tool
care and regularcleaning.
• A smooth even flow of material indicates the proper
drillingrate.
• Drill straight, keeping the bit at a right angle to the work.
Do not exert side pressure on the bit when drillling as
this will cause clogging of the bit flutes and a slower
drillingspeed.
• When drilling deep holes, if the hammer speed starts to
drop off, pull the bit partially out of the hole with tool still
running to help clear debris from thehole.
Recommendations for Screwdriving
• Start with lower torque settings, then advance to higher
torque settings to avoid damage to the workpiece
orfastener.
• Make some practice runs in scrap or on unseen areas of
the workpiece to determine the proper position of the
mode selectioncollar.
Drilling
IMPORTANT: For MASONRY, such as brick, cement, cinder
block, etc., use carbide‑tipped masonrybits.
1. Turn the mode selection collar6 to the drillsymbol.
Refer to ModeSelection.
2. Place drill bit in contact with theworkpiece.
NOTE: Use sharp drill bitonly.
3. Pull the trigger switch applying pressure in a straight line
with the bit until it reaches the desireddepth.
WARNING: Drill may stall if overloaded causing a
sudden twist. Always expect the stall. Grip the drill
firmly to control the twisting action and avoidinjury.
4. Keep the motor running when pulling the bit back out of
a drilled hole to preventjamming.
Recommendations for Drilling
• When drilling, always apply pressure in a straight line
with the bit, but do not push hard enough to stall the
motor or deflect thebit.
• IF THE DRILL STALLS:
-RELEASE TRIGGER SWITCH IMMEDIATELY,
remove drill bit from work, and determine cause
ofstalling.
‑DO NOT DEPRESS TRIGGER SWITCH ON AND OFF
IN AN ATTEMPT TO START A STALLED DRILL—
THIS CAN DAMAGE THEDRILL.
‑To minimize stalling or breaking through the material,
reduce pressure on drill and ease the bit through the
last fractional part of thehole.
• Large holes (5/16" to 1/2" [7.9 mm to 12.7 mm]) in steel
can be made more easily if a pilot hole (5/32" to 3/16"
[4mm to 4.8 mm]) is drilledfirst.
• If drilling thin material or material that is prone to splinter,
use a wood“back‑up”block to prevent damage to
theworkpiece.
Hammerdrilling DCD798
IMPORTANT: Use carbide‑tipped or masonry bits rated for
percussion drillingonly.
1. Select the desired speed/torque range using the speed
selector7 to match the speed and torque to the
planned operation. Turn the mode selection collar6 to
the hammerdrillsymbol.
2. Pull the trigger, applying just enough pressure on the
hammer to keep it from bouncing excessively or "rising"
off the bit.
Recommendations for Hammerdrilling
• Too much force will cause slower drilling speeds,
overheating, and a lower drillingrate.

ENGLISH
12
Three-Year Limited Warranty
For warranty terms, go to www.dewalt.com/Legal/Warranty/
3-Year-Limited-Warranty.
To request a written copy of the warranty terms, contact:
Customer Service at DeWALT Industrial Tool Co., 701East
Joppa Road, Towson, MD 21286or call 1‑800‑4‑DeWALT
(1-800-433-9258).
LATIN AMERICA: This warranty does not apply to products
sold in Latin America. For products sold in Latin America,
see country‑specific warranty information contained in
the packaging, call the local company, or see website for
warrantyinformation.
FREE WARNING LABEL REPLACEMENT: If your warning
labels become illegible or are missing, call 1‑800‑4‑DeWALT
(1-800-433-9258) for a freereplacement.
Register Online
Thank you for your purchase. Register your product nowfor:
• WARRANTY SERVICE: Registering your product will
help you obtain more efficient warranty service in case
there is a problem with yourproduct.
• CONFIRMATION OF OWNERSHIP: In case of an
insurance loss, such as fire, flood or theft, your registration
of ownership will serve as your proof ofpurchase.
• FOR YOUR SAFETY: Registering your product will allow
us to contact you in the unlikely event a safety notification
is required under the Federal Consumer SafetyAct.
• Register online at www.dewalt.com.