DCH273
DCH274
II
Copyright DeWALT
English (original instructions) 4
中文 (简体） 17
繁體中文 29
한국어
41
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DCH274
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Congratulations!
You have chosen a DeWALT tool. Years of experience, thorough product development and innovation make
DeWALT one of the most reliable partners for professional power toolusers.
Technical Data
DCH273 DCH274
Voltage V
DC
18 (20 MAX) 18 (20 MAX)
Max power output W 400 400
No-load speed min
-1
0–1100 0–1100
Impact rate bpm 0–4600 0–4600
Single impact energy (EPTA 05/2009) J 2.1 2.1
Maximum drilling range in
steel/wood/concrete
mm 13/26/24 13/26/24
Chuck SDS Plus
®
SDS Plus
®
Collar diameter mm 54 54
Battery Type Li-Ion Li-Ion
Weight (without battery pack) kg 2.5 2.7
HEAVY-DUTY CORDLESS ROTARY HAMMERDRILL
DCH273, DCH274
English (original instructions)
Battery pack
DCB180 DCB181 DCB182 DCB183 DCB184 DCB185
Battery type Li-Ion Li-Ion Li-Ion Li-Ion Li-Ion Li-Ion
Voltage V
DC
18 18 18 18 18 18
Capacity A
h
3,0 1,5 4,0 2,0 5,0 1,3
Weight kg 0,64 0,35 0,61 0,40 0,62 0,35
Charger DCB105 DCB107 DCB112
Mains voltage V
AC
220-240 220-240 220-240
Battery type Li-Ion Li-Ion Li-Ion
Approx. charging time
of battery packs
min
30
(1,5 Ah)
40
(2,0 Ah)
55
(3,0 Ah)
60
(1,3 Ah)
70
(1,5 Ah)
90
(2,0 Ah)
40
(1,3 Ah)
45
(1,5 Ah)
60
(2,0 Ah)
70
(4,0 Ah)
90
(5,0 Ah)
140
(3,0 Ah)
185
(4,0 Ah)
90
(3,0 Ah)
120
(4,0 Ah)
Weight kg 0,49 0,29 0,36
Definitions: Safety Guidelines
The definitions below describe the level of severity
for each signal word. Please read the manual and
pay attention to thesesymbols.
DANGER: Indicates an imminently
hazardous situation which, if not avoided,
will result in death or seriousinjury.
WARNING: Indicates a potentially
hazardous situation which, if not
avoided, could result in death or
seriousinjury.
CAUTION: Indicates a potentially
hazardous situation which, if not
avoided, may result in minor or
moderateinjury.
NOTICE: Indicates a practice
not related to personal injury
which, if not avoided, may result in
propertydamage.
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Denotes risk of electricshock.
Denotes risk offire.
WARNING: To reduce the risk of injury,
read the instructionmanual.
General Power Tool Safety Warnings
WARNING! Read all safety warnings
and all instructions. Failure to follow
the warnings and instructions may
result in electric shock, fire and/or
seriousinjury.
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) powertool.
1) WORK AREA SAFETY
a) Keep work area clean and well lit.
Cluttered or dark areas inviteaccidents.
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
orfumes.
c) Keep children and bystanders away while
operating a power tool. Distractions can
cause you to losecontrol.
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
electricshock.
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 orgrounded.
c) Do not expose power tools to rain or wet
conditions. Water entering a power tool will
increase the risk of electricshock.
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 electricshock.
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 electricshock.
f) If operating a power tool in a damp
location is unavoidable, use a residual
current device (RCD) protected supply.
Use of an RCD reduces the risk of
electricshock.
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 personalinjury.
b) Use personal protective equipment.
Always wear eye protection. Protective
equipment such as dust mask, non-skid
safety shoes, hard hat, or hearing protection
used for appropriate conditions will reduce
personalinjuries.
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 energising power tools that
have the switch on invitesaccidents.
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 personalinjury.
e) Do not overreach. Keep proper
footing and balance at all times. This
enables better control of the power tool in
unexpectedsituations.
f) Dress properly. Do not wear loose
clothing or jewellery. Keep your hair,
clothing and gloves away from moving
parts. Loose clothes, jewellery or long hair
can be caught in movingparts.
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-relatedhazards.
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
wasdesigned.
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 berepaired.
c) Disconnect the plug from the power
source and/or the battery pack from
the power tool before making any
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Additional Safety Instructions for
Rotary Hammers
• Wear ear protectors. Exposure to noise can
cause hearingloss.
• Use auxiliary handles supplied with the tool.
Loss of control can cause personalinjury.
• Hold power tools by insulated gripping
surfaces when performing an operation
where the cutting tool may contact hidden
wiring. Contact with a “live” wire will make
exposed metal parts of the tool “live” and could
give the operator an electricalshock.
• Use clamps or other practical way 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
ofcontrol.
• Wear safety goggles or other eye protection.
Hammering operations cause chips to fly. Flying
particles can cause permanent eye damage.
Wear a dust mask or respirator for applications
that generate dust. Ear protection may be
required for mostapplications.
• Keep a firm grip on the tool at all times.
Do not attempt to operate this tool
without holding it with both hands. It is
recommended that the side handle be used at
all times. 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 beforeuse.
• 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 restperiods.
• Do not recondition bits yourself. Chisel
reconditioning should be done by an authorized
specialist. Improperly reconditioned chisels
could causeinjury.
• 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 barehands.
adjustments, changing accessories, or
storing power tools. Such preventive safety
measures reduce the risk of starting the
power toolaccidentally.
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
untrainedusers.
e) Maintain power tools. 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 powertools.
f) Keep cutting tools sharp and clean.
Properly maintained cutting tools with sharp
cutting edges are less likely to bind and are
easier tocontrol.
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 hazardoussituation.
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
batterypack.
b) Use power tools only with specifically
designated battery packs. Use of any
other battery packs may create a risk of
injury andfire.
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 afire.
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 orburns.
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 ismaintained.
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Important Safety Instructions for All
Battery Chargers
SAVE THESE INSTRUCTIONS: This manual
contains important safety and operating instruc tions
for compatible batterychargers.
• Before using charger, read all instructions and
cautionary markings on charger, battery pack,
and product using batterypack.
WARNING: Shock hazard. Do not allow
any liquid to get inside charger. Electric
shock mayresult.
CAUTION: Burn hazard. To reduce
the risk of injury, charge only DeWALT
rechargeable batteries. Other types of
batteries may burst causing personal
injury anddamage.
CAUTION: Children should be
supervised to ensure that they do not
play with theappliance.
NOTICE: Under certain conditions, with
the charger plugged in to the power
supply, the charger can be shorted by
foreign material. 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 charger cavities. Always unplug the
charger from the power supply when
there is no battery pack in the cavity.
Unplug charger before attempting
toclean.
• DO NOT attempt to charge the battery pack
with any chargers other than the ones in
this manual. The charger and battery pack are
specifically designed to worktogether.
• These chargers are not intended for
any uses other than charging DeWALT
rechargeable batteries. Any other uses
may result in risk of fire, electric shock
orelectrocution.
• Do not expose charger to rain orsnow.
• Pull by plug rather than cord when
disconnecting charger. This will reduce risk
of damage to electric plug andcord.
• Make sure that cord is located so that it
will not be stepped on, tripped over, or
otherwise subjected to damage orstress.
• Do not use an extension cord unless it
is absolutely necessary. Use of improper
extension cord could result in risk of fire,
electric shock, orelectrocution.
• Never lay the tool down until the bit has
come to a complete stop. Moving bits could
causeinjury.
• Do not strike jammed bits with a hammer to
dislodge them. Fragments of metal or material
chips could dislodge and causeinjury.
• Slightly worn chisels can be resharpened
bygrinding.
• Keep the power cord away from the rotating
bit. Do not wrap the cord around any part of
your body. An electric cord wrapped around a
spinning bit may cause personal injury and loss
ofcontrol.
Residual Risks
The following risks are inherent to the use of rotary
hammers:
– Injuries caused by touching the rotating parts or
hot parts of thetool.
In spite of the application of the relevant safety
regulations and the implementation of safety
devices, certain residual risks cannot be avoided.
These are:
– Impairment ofhearing.
– Risk of squeezing fingers when changing
theaccessory.
– Health hazards caused by breathing dust
developed when working in concrete and/
ormasonry.
Markings on Tool
The following pictograms are shown on the tool:
Read instruction manual beforeuse.
Wear earprotection.
Wear eyeprotection.
DATE CODE POSITION
The date code, which also includes the year of
manufacture, is printed into the housing surface that
forms the mounting joint between tool andbattery.
Example:
2014 XX XX
Year of Manufacture
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NOTE: To ensure maximum performance and life of
Li-Ion batteries, charge the battery pack fully before
firstuse.
Charging Process
Refer to the table below for the charge status of the
batterypack.
Charge indicators: DCB105
charging
–– –– –– –– –– –– ––
fully charged
––––––––––––––––––––
hot/cold pack delay
––– • ––– • ––– • –––
replace battery pack
• • • • • • • • • • • • • •
Charge indicators: DCB107, DCB112
charging –– –– –– –– ––
fully charged
––––––––––––––
hot/cold pack delay*
–– –– –– –––––
*DCB107, DCB112: The red light will
continue to blink, but a yellow indicator
light will be illuminated during this
operation. Once the battery has reached
an appropriate temperature, the yellow light
will turn off and the charger will resume the
charging procedure.
The compatible charger(s) will not charge a faulty
battery pack. The charger will indicate faulty battery
by refusing to light or by displaying problem pack or
charger blinkpattern.
NOTE: This could also mean a problem with
acharger.
If the charger indicates a problem, take the charger
and battery pack to be tested at an authorised
servicecentre.
HOT/COLD PACK DELAY
When the charger detects a battery that is too hot
or too cold, it automatically starts a Hot/Cold Pack
Delay, suspending charging until the battery has
reached an appropriate temperature. The charger
then automatically switches to the pack charging
mode. This feature ensures maximum batterylife.
A cold battery pack will charge at about half the rate
of a warm battery pack. The battery pack will charge
at that slower rate throughout the entire charging
cycle and will not return to maximum charge rate
even if the batterywarms.
• Do not place any object on top of 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 thehousing.
• Do not operate charger with damaged cord
or plug — have them replacedimmediately.
• Do not operate charger if it has received
a sharp blow, been dropped, or otherwise
damaged in any way. Take it to an authorised
servicecentre.
• Do not disassemble charger; take it to an
authorised service centre when service or
repair is required. Incorrect reassembly may
result in a risk of electric shock, electrocution
orfire.
• In case of damaged power supply cord the
supply cord must be replaced immediately by
the manufacturer, its service agent or similar
qualified person to prevent anyhazard.
• Disconnect the charger from the outlet
before attempting any cleaning. This will
reduce the risk of electric shock. Removing
the battery pack will not reduce thisrisk.
• NEVER attempt to connect 2 chargerstogether.
• The charger is designed to operate on
standard 220-240V household electrical
power. Do not attempt to use it on any
other voltage. This does not apply to the
vehicularcharger.
SAVE THESE INSTRUCTIONS
Chargers
The DCB105, DCB107 and DCB112 charger
accepts 18 V (20V Max) Li-Ion (DCB180, DCB181,
DCB182, DCB183, DCB184 and DCB185)
batterypacks.
DeWALT chargers require no adjustment and are
designed to be as easy as possible tooperate.
Charging Procedure (fig.2)
1. Plug the charger into an appropriate outlet
before inserting batterypack.
2. Insert the battery pack(f) into the charger.
The red (charging) light will blink continuously
indicating that the charging process hasstarted.
3. The completion of charge will be indicated by
the red light remaining ON continuously. The
pack is fully charged and may be used at this
time or left in thecharger.
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large battery packs will stand upright
on the battery pack but may be easily
knockedover.
SPECIFIC SAFETY INSTRUCTIONS FOR LITHIUM ION
(Li-Ion)
• 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 areburned.
• 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 lithiumsalts.
• Contents of opened battery cells may cause
respiratory irritation. Provide fresh air. If
symptoms persists, seek medicalattention.
WARNING: Burn hazard. Battery liquid
may be flammable if exposed to spark
orflame.
Transportation
DeWALT batteries comply with all applicable
shipping regulations as prescribed by industry and
legal standards which include UN Recommendations
on the Transport of Dangerous Goods; International
Air Transport Association (IATA) Dangerous Goods
Regulations, International Maritime Dangerous
Goods (IMDG) Regulations, and the European
Agreement Concerning The International Carriage
of Dangerous Goods by Road (ADR). Lithium-ion
cells and batteries have been tested to section 38.3
of the UN Recommendations on the Transport of
Dangerous Goods Manual of Tests andCriteria.
In most instances, shipping a DeWALT battery pack
will be excepted from being classified as a fully
regulated Class 9 Hazardous material. In general, the
two instances that require shipping Class 9 are:
1. Air shipping more than two DeWALT lithium-ion
battery packs when the package contains only
battery packs (no tools), and
2. Any shipment containing a lithium-ion battery
with an energy rating greater than 100 watt
hours (Wh). All lithium-ion batteries have the
watt hour rating marked on thepack.
Regardless of whether a shipment is
considered excepted or fully regulated, it is the
shipper's responsibility to consult the latest
regulations for packaging, labeling/marking and
documentationrequirements.
LITHIUM ION BATTERY PACKS ONLY
XR Li-Ion tools are designed with an Electronic
Protection System that will protect the battery
against overloading, overheating or deepdischarge.
The tool will automatically turn off if the Electronic
Protection System engages. If this occurs, place the
Li-Ion battery on the charger until it is fullycharged.
Important Safety Instructions for All
Battery Packs
When ordering replacement battery packs, be sure
to include catalogue number andvoltage.
The battery pack is not fully charged out of the
carton. Before using the battery pack and charger,
read the safety instructions below. Then follow
charging proceduresoutlined.
READ ALL INSTRUCTIONS
• Do not charge or use battery in explosive
atmospheres, such as in the presence of
flammable liquids, gases or dust. Inserting
or removing the battery from the charger may
ignite the dust orfumes.
• Never force battery pack into charger. Do
not modify battery pack in any way to fit into
a non-compatible charger as battery pack
may rupture causing serious personalinjury.
• Charge the battery packs only in
DeWALTchargers.
• DO NOT splash or immerse in water or
otherliquids.
• Do not store or use the tool and battery
pack in locations where the temperature
may reach or exceed 40 ˚C (105 ˚F) (such as
outside sheds or metal buildings in summer).
WARNING: Never attempt to open the
battery pack for any reason. If battery
pack case is cracked or damaged,
do not insert into charger. Do not
crush, drop or damage 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 (i.e., pierced with a nail, hit with a
hammer, stepped on). Electric shock
or electrocution may result. Damaged
battery packs should be returned to
service centre forrecycling.
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
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Hot/cold pack delay.
Do not probe with conductive objects.
Do not charge damaged battery packs.
Do not expose to water.
Have defective cords replaced
immediately.
Charge only between 4 ˚C and 40 ˚C.
Only for indoor use.
Discard the battery pack with due care
for the environment.
Charge DeWALT battery packs only with
designated DeWALT chargers. Charging
battery packs other than the designated
DeWALT batteries with a DeWALT
charger may make them burst or lead to
other dangerous situations.
Do not incinerate the battery pack.
Package Contents
The package contains:
1 Cordless rotary hammerdrill
1 Side handle and depth rod
1 Charger
1 Battery pack (D1, L1, M1, P1)
2 Battery packs (D2, L2, M2, P2)
3 Battery packs (D3, L3, M3, P3)
1 Keyless chuck (DCH274)
1 Kit box
1 Instruction manual
1 Warranty card
1 Service list
NOTE: Battery packs and chargers are not included
with N-models.
• Check for damage to the tool, parts or
accessories which may have occurred
duringtransport.
Transporting batteries can possibly cause fire if the
battery terminals inadvertently come in contact with
conductive materials. When transporting batteries,
make sure that the battery terminals are protected
and well insulated from materials that could contact
them and cause a shortcircuit.
The information provided in this section of the
manual is provided in good faith and believed to be
accurate at the time the document was created.
However, no warranty, expressed or implied, is
given. It is the buyer’s responsibility to ensure that its
activities comply with the applicableregulations.
Battery Pack
BATTERY TYPE
The DCH273 and DCH274 operate on 18V (20V
Max) batterypacks.
The DCB180, DCB181, DCB182, DCB183
DCB184 or DCB185 battery packs may be used
on the DCH273 andDCH274.
Storage Recommendations
1. The best storage place is one that is cool and
dry away from direct sunlight and excess heat
or cold. For optimum battery performance and
life, store battery packs at room temperature
when not inuse.
2. For long storage, it is recommended to store a
fully charged battery pack in a cool, dry place
out of the charger for optimalresults.
NOTE: Battery packs should not be stored
completely depleted of charge. The battery pack will
need to be recharged beforeuse.
Labels on Charger and Battery Pack
In addition to the pictographs used in this manual,
the labels on the charger and the battery pack may
show the following pictographs:
Read instruction manual before use.
See Technical Data for charging time.
Battery charging.
Battery charged.
Battery defective.
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Electrical Safety
The electric motor has been designed for one
voltage only. Always check that the battery pack
voltage corresponds to the voltage on the rating
plate. Also make sure that the voltage of your
charger corresponds to that of yourmains.
Your DeWALT charger is double insulated
in accordance with IEC 60335; therefore
no earth wire isrequired.
If the supply cord is damaged, it must be replaced
by a specially prepared cord available through the
DeWALT serviceorganization.
Using an Extension Cable
An extension cord should not be used unless
absolutely necessary. Use an approved extension
cable suitable for the power input of your charger
(see Technical Data). The minimum conductor size
is 1 mm
2
; the maximum length is 30m.
When using a cable reel, always unwind the
cablecompletely.
ASSEMBLY AND ADJUSTMENTS
WARNING: Prior to assembly and
adjustment, always remove the battery
pack. Always switch off the tool before
inserting or removing the batterypack.
WARNING: Use only DeWALT battery
packs andchargers.
Inserting and Removing the
Battery Pack from the Tool (fig.3)
WARNING: To reduce the risk of injury,
never depress the battery release button
without removing the battery pack.
Depressing the battery release button
without removing the battery pack
can result in the battery pack falling
outunexpectedly.
NOTE: For best results, make sure your battery
pack is fullycharged.
TO INSTALL THE BATTERY PACK INTO THE TOOL HANDLE
1. Align the battery pack(f) with the rails inside the
tool’s handle (fig.3).
2. Slide it into the handle until the battery pack is
firmly seated in the tool and ensure that it does
notdisengage.
TO REMOVE THE BATTERY PACK FROM THE TOOL
1. Press the battery release button(g) and firmly
pull the battery pack out of the toolhandle.
• Take the time to thoroughly read and
understand this manual prior tooperation.
Description (fig.1, 3, 7)
WARNING: Never modify the power
tool or any part of it. Damage or
personal injury couldresult.
a. Variable speed switch
b. Forward/reverse button
c. Mode selector
d. Worklight
e. Side handle
f. Battery pack
g. Release button
h. Main handle
i. Drill bit symbol (rotary drilling mode)
j. Hammerdrilling symbol (rotary hammering
mode)
k. Hammer symbol (hammering only mode)
l. SDS Plus
®
tool holder
m. Sleeve
n. Fuel gauge button
o. Dust cover
p Locking collar
q. Keyless chuck (DCH274)
r. Belt hook
s. Active vibration control
t. Dust extraction system electrical connection
u. Mode selector button
INTENDED USE
Your DCH273 and DCH274 cordless rotary
hammerdrills have been designed for professional
drilling and hammerdrilling applications, as well as
screwdriving and chippingapplications.
DO NOT use under wet conditions or in presence of
flammable liquids orgases.
These hammerdrills are professional powertools.
DO NOT let children come into contact with the
tool. Supervision is required when inexperienced
operators use thistool.
• This product is not intended for use by persons
(including children) suffering from diminished
physical, sensory or mental abilities; lack of
experience, knowledge or skills unless they are
supervised by a person responsible for their
safety. Children should never be left alone with
thisproduct.
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Forward/Reverse Control Button
(fig.1, 2)
WARNING: Always wait until the motor
has come to a complete standstill
before changing the direction ofrotation.
A forward/reverse control button(b) determines
the direction of the tool and also serves as a lock
offbutton.
To select forward rotation, release the trigger switch
and depress the for ward/re verse control button on
the right side of thetool.
To select reverse, release the trigger switch and
depress the forward/reverse control button on the
left side of thetool.
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 isreleased.
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
aproblem.
Worklight (fig.1)
DCH273, DCH274
There is a worklight(d) located on the front of the
tool. The worklight will be activated when the trigger
switch is squeezed. The worklight 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 remainon.
NOTE: The worklight is for lighting the immediate
work surface and is not intended to be used as
aflashlight.
Selecting the Operating Mode (fig.1)
WARNING: Do not select the operating
mode when the tool isrunning.
Your tool is equipped with a separate mode
selector(c) to switch between rotary drilling, rotary
hammering and hammering onlymode.
Rotary drilling: for screwdriving and for drilling
into steel, wood andplastics.
Rotary hammering: for concrete and
masonrydrilling.
Hammering only: for lightchipping.
Before attempting to rotate the mode selector
depress the mode selector button(u). For rotary
drilling, rotate the mode selector(c) until the arrow
2. Insert battery pack into the charger as
described in the charger section of thismanual.
FUEL GAUGE BATTERY PACKS (FIG.3)
Some DeWALT battery packs include a fuel
gauge which consists of three green LED lights
that indicate the level of charge remaining in the
batterypack.
To actuate the fuel gauge, press and hold the fuel
gauge button(n). A combination of the three green
LED lights will illuminate designating the level of
charge left. When the level of charge in the battery
is below the usable limit, the fuel gauge will not
illuminate and the battery will need to berecharged.
NOTE: The fuel gauge is only an indication of the
charge left on the battery pack. It does not indicate
tool functionality and is subject to variation based
on product components, temperature and end-
userapplication.
Variable Speed Switch (fig.1)
To turn the tool on, squeeze the trigger switch(a). To
turn the tool off, release the trigger switch. Your tool
is equipped with a brake. The tool holder will stop as
soon as the trigger switch is fullyreleased.
The variable speed trigger switch enables you to
select the best speed for a particular application.
The farther you squeeze the trigger switch, the faster
the tool will operate. For maximum tool life, use
variable speed only for starting holes orfasteners.
NOTE: Continuous use in variable speed range is
not recommended. It may damage the switch and
should beavoided.
Side Handle (fig.1)
WARNING: To reduce the risk of
personal injury, ALWAYS operate
the tool with the side handle properly
installed. Failure to do so may result
in the side handle slipping during tool
operation and subsequent loss of
control. Hold tool with both hands to
maximizecontrol.
The side handle(e) clamps to the front of the gear
case and may be rotated 360˚ to permit right- or
left-hand use. The side handle must be tightened
sufficiently to resist the twisting action of the tool if
the accessory binds or stalls. Be sure to grip the
side handle at the far end to control the tool
during astall.
To loosen side handle, rotatecounterclockwise.
13
English
Replacing the SDS Plus
®
Tool Holder
with the Keyless Chuck (fig.7)
DCH274
1. Turn the locking collar(p) into the unlocked
position and pull the SDS Plus
®
tool
holder(l)off.
2. Push the keyless chuck(q) onto the spindle and
turn the locking collar into the lockingposition.
3. To replace the keyless chuck with the
SDS Plus
®
tool holder, first remove the keyless
chuck the same way as the SDS Plus
®
tool
holder was removed. Then replace the
SDS Plus
®
tool holder the same way as the
keyless chuck wasreplaced.
WARNING: Never use standard chucks
in the rotary hammeringmode.
Overload Clutch
There are two different types of overload clutch
fitted.The DCH273 and DCH274 have an electronic
overload clutch fitted.
In case of jamming of a drill bit, the drive to the
drill spindle is interrupted. On units fitted with a
mechanical clutch the indication that the clutch has
activated will be an audible ratcheting together with
increased vibration. If the electronic clutch activates
the motor is repeatedly switched on and off for a few
seconds to replicate the feedback associated with a
mechanical clutch. Release and depress the trigger
to re-engage drive.
Because of the resulting forces, always hold the tool
with both hands and take a firmstance.
Dust Extraction System (fig.1)
A dedicated integrated dust extraction
system (D25303DH) is available and can be
purchasedseparately.
To operate the D25303DH uses an electrical
connection(t) to the rotary hammer.
The DCH273, and DCH274 rotary hammer models
are equipped with the electrical connection(t).
OPERATION
Instructions for Use
WARNING:
• Always observe the safety instructions
and applicableregulations.
• Be aware of the location of pipework
andwiring.
points to the drill bit symbol(i). For rotary hammering
mode, align the arrow with the hammerdrilling
symbol(j). For hammering only mode, align arrow
with the hammer symbol(k).
NOTE: The mode selector(c) must be in rotary
drilling, rotary hammering or hammering only
mode at all times. There are no operable positions
inbetween.
Active Vibration Control (fig.1)
The active vibration control neutralises 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. In operation, a spring loaded mechanism
counterbalances the vibration forces. This can be
sensed by the cushioning effect when pressure is
applied to the tool. Make sure the spring is engaged
but not too firmly. The mechanism should be
allowed to "float."
Belt Hook (Fig.1, 4)
A belt hook(r) is fitted below the main handle(h) on
the left side of the tool. To extend the belt hook pull
it out from the side of the tool. To store the belt hook
push it back flush with the side of thetool. The belt
hook(r) can be positioned to the left or right of the
tool to accommodate left or right-handed users.
1. Position the belt hook into the extended position
and remove the hex head screw located on the
underside of the main handle.
2. Pull out the belt hook until it is free from the unit.
3. Reinsert the belt hook into the desired side and
push it into the slot.
NOTE: On some models the slot may be
covered with a sticker. Either remove the
sticker or pierce the sticker to expose the slot
underneath.
4. Re-insert the hex screw and tighten securely.
If use of the hook is not desired at all, it can be
removedcompletely.
SDS Plus
®
Tool Holder (fig.5)
To insert a drill or chisel bit, insert the shank of the
bit about 19 mm (3/4") into SDS Plus
®
tool holder(l).
Push and rotate bit until it locks in place. The bit will
be securelyheld.
To release bit, pull the sleeve(m) back and remove
thebit.
14
English
ROTARY DRILLING (FIG.1)
1. Set the mode selector switch(c) to the "rotary
drilling"position.
2. Depending on your tool, follow either of the
following instructions:
– Fit a chuck adaptor/chuck assembly
(DCH273). Special SDS Plus
®
adaptors with
threaded sections are available for use with
standard 10 or 13 mm chucks to enable
straight shank bits to beused.
– Replace the SDS Plus
®
tool holder with the
keyless chuck (DCH274).
3. Proceed as described for rotaryhammering.
WARNING: Never use standard chucks
in the rotary hammeringmode.
SCREWDRIVING (FIG.1)
1. Set the mode selector switch(c) to the "rotary
drilling"position.
2. Select the direction ofrotation.
3. Depending on your tool, follow either of the
following instructions:
– Insert the special SDS Plus
®
screwdriving
adaptor for use with hexagonal screwdriver
bits (DCH273).
– Replace the SDS Plus
®
tool holder with the
keyless chuck (DCH274).
4. Insert the appropriate screwdriver bit. When
driving slotted head screws always use bits with
a findersleeve.
5. Gently press the variable speed switch(a) to
prevent damage to the screw head. In reverse
(LH) rotation the tool speed is automatically
reduced for easy screwremoval.
6. When the screw is flush with the workpiece,
release the variable speed switch to prevent
the screw head from penetrating into
theworkpiece.
CHIPPING (FIG.1)
1. Set the mode selector switch(c) to the
"hammering only"position.
2. Insert the appropriate chisel and check if it is
properlylocked.
3 Adjust the side handle(e) asrequired.
4. Switch on the tool and startworking.
It may be necessary to briefly run the motor after
having changed from chiselling to rotary modes in
order to align thegears.
• Apply only a gentle pressure to
the tool (approx. 5 kg). Excessive
force does not speed up drilling but
decreases tool performance and may
shorten toollife.
• Do not drill or drive too deep to
prevent damage to the dust cover(o).
• Always hold the tool firmly with both
hands and ensure a secure stance.
Always operate the tool with the side
handle properlymounted.
WARNING: To reduce the risk of
serious personal injury, turn tool
off and disconnect battery pack
before making any adjustments or
removing/installing attachments
oraccessories.
Proper Hand Position (fig.1, 6)
WARNING: To reduce the risk of
serious personal injury, ALWAYS
use proper hand position as shown
in figure6.
WARNING: To reduce the risk of
serious personal injury, ALWAYS
hold securely in anticipation of a
suddenreaction.
Proper hand position requires one hand on the
main handle(h), with the other hand on the side
handle(e).
Drill Operation (fig.1)
WARNING: To reduce the risk of
serious personal injury, turn tool off
and disconnect tool from power
source before making any adjustments
or removing/installing attachments
oraccessories.
WARNING: To reduce the risk of
personal injury, ALWAYS ensure
workpiece is anchored or clamped
firmly. If drilling thin material, use a wood
“back-up” block to prevent damage to
thematerial.
HAMMERDRILLING (FIG.1)
1. Set the mode selector switch(c) to the "rotary
hammering"position.
2. Insert the appropriate drill bit. For best results
use high quality carbide-tippedbits.
3. Adjust the side handle(e) asrequired.
4. Mark the spot where the hole is to bedrilled.
5. Place the drill bit on the spot and switch on
thetool.
15
English
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
cleaningsolutions.
Optional Accessories
WARNING: Since accessories, other
than those offered by DeWA LT, have
not been tested with this product, use
of such accessories with this tool could
be hazardous. To reduce the risk of
injury, only DeWALT recommended
accessories should be used with
thisproduct.
Various types of SDS Plus
®
drill bits and chisels are
available as anoption.
Accessories and attachments used must be
regularly lubricated around the SDS Plus
®
fitment.
Consult your dealer for further information on the
appropriateaccessories.
Protecting the Environment
Separate collection. This product must
not be disposed of with normal
householdwaste.
Should you find one day that your DeWALT product
needs replacement, or if it is of no further use to you,
do not dispose of it with household waste. Make this
product available for separatecollection.
Separate collection of used products and
packaging allows materials to be
recycled and used again. Re-use of
recycled materials helps prevent
environmental pollution and reduces
the demand for rawmaterials.
Local regulations may provide for separate collection
of electrical products from the household, at
municipal waste sites or by the retailer when you
purchase a newproduct.
DeWALT provides a facility for the collection and
recycling of DeWALT products once they have
reached the end of their working life. To take
advantage of this service please return your product
to any authorised repair agent who will collect them
on ourbehalf.
You can check the location of your nearest
authorised repair agent by contacting your local
DeWALT office at the address indicated in this
WARNING:
• Do not use this tool to mix or pump
easily combustible or explosive fluids
(benzine, alcohol, etc.).
• Do not mix or stir inflammable liquids
labelledaccordingly.
MAINTENANCE
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 regularcleaning.
WARNING: To reduce the risk of
serious personal injury, turn tool
off and disconnect battery pack
before making any adjustments or
removing/installing attachments or
accessories. An accidental start-up
can causeinjury.
This machine is not user-serviceable. Take the
tool to an authorised DeWALT repair agent after
approximately 40 hours of use. If problems occur
before this time contact an authorised DeWALT
repairagent.
The charger and battery pack are not serviceable.
There are no serviceable partsinside.
Lubrication
Your power tool requires no additionallubrication.
Cleaning
WARNING: Blow dirt and dust out of
the main housing with dry air as often as
dirt is seen collecting in and around the
air vents. Wear approved eye protection
and approved dust mask when
performing thisprocedure.
WARNING: Never use solvents or
other harsh chemicals for cleaning the
non-metallic parts of the tool. These
chemicals may weaken the 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 aliquid.
16
English
manual. Alternatively, a list of authorised DeWALT
repair agents and full details of our after-sales
service and contacts are available on the Internet at:
www.2helpU.com.
Rechargeable Battery Pack
This long life battery pack must be recharged when
it fails to produce sufficient power on jobs which
were easily done before. At the end of its technical
life, discard it with due care for our environment:
• Run the battery pack down completely, then
remove it from thetool.
• Li-Ion cells are recyclable. Take them to your
dealer or a local recycling station. The collected
battery packs will be recycled or disposed of
properly.
17
简体中文
祝贺您！
感谢您选购 DeWALT 工具。凭借多年的产品开发和创新经验，DeWALT 已经成为专业电动工具用户最可靠的
合作伙伴之一。
技术参数
DCH273 DCH274
电压 V
DC
18 (20V Max) 18 (20V Max)
最大功率输出 W 400 400
空载转速 min
-1
0–1100 0–1100
冲击率 bpm 0–4600 0–4600
冲击能量 (EPTA 05/2009) J 2.1 2.1
钢材/木材/混凝土
中的最大钻深
mm 13/26/24 13/26/24
夹头 SDS Plus
®
SDS Plus
®
轴环直径 mm 54 54
电池类型 锂电 锂电
重量（不含电池组） kg 2.5 2.7
重型锂电充电式电锤
DCH273、DCH274
简体中文（原始说明）
电池组
DCB180 DCB181 DCB182 DCB183 DCB184 DCB185
电池类型 锂电 锂电 锂电 锂电 锂电 锂电
电压 V
DC
18 18 18 18 18 18
电池容量 A
h
3.0 1.5 4.0 2.0 5.0 1.3
重量 kg 0.64 0.35 0.61 0.40 0.62 0.35
充电器 DCB105 DCB107 DCB112
电源电压
V
AC
220-240 220-240 220-240
电池类型 锂电 锂电 锂电
电池组的大约
充电时间
min
30
（1.5 安时）
40
（2.0 安时）
55
（3.0 安时）
60
（1.3 安时）
70
（1.5 安时）
90
（2.0 安时）
40
（1.3 安时）
45
（1.5 安时）
60
（2.0 安时）
70
（4.0 安时）
90
（5.0 安时）
140
（3.0 安时）
185
（4.0 安时）
90
（3.0 安时）
120
（4.0 安时）
重量
kg 0.49 0.29 0.36
定义：安全守则
下列定义描述了各标志术语的严重程度。请仔细阅
读本手册，并注意这些标志。
危险：表示紧急危险情况，如果不加以避
免，将导致死亡或严重伤害。
警告：表示存在潜在的危险情况，如果不
加以避免，可能导致死亡或严重伤害。
警示：表示存在潜在危险情况，如果不加
以避免，可能导致轻度或中度伤害。
注 意 ：表示存在不涉及人身伤害的情况，如
果不加以避免，可能导致财产损失。
表示存在触电风险。
18
简体中文
表示存在火灾风险。
警 告 ：为降低伤害风险，请阅读使用手
册。
电动工具通用安全警告
警告！阅读所有警告和所有说明。不遵照
以下警告和说明会导致电击、着火和／
或严重伤害。
保存所有警告和说明书以备查阅。
在所有下列的警告中术语“电动工具”指市电驱动（
有线）电动工具或电池驱动（无线）电动工具。
1)工作场地的安全
a) 保持工作场地清洁和明亮。混乱和黑暗的场
地会引发事故。
b) 不要在易爆环境，如有易燃液体、气体或粉尘
的环境下操作电动工具。电动工具产生的火
花会点燃粉尘或气体。
c) 让儿童和旁观者离开后操作电动工具。注意
力不集中会使你失去对工具的控制。
2) 电气安全
a) 电动工具插头必须与插座相配。绝不能以任
何方式改装插头。需接地的电动工具不能使
用任何转换插头。未经改装的插头和相配的
插座将减少电击危险。
b) 避免人体接触接地表面，如管道、散热片和冰
箱。如果你身体接地会增加电击危险。
c) 不得将电动工具暴露在雨中或潮湿环境中。
水进入电动工具将增加电击危险。
d) 不得滥用电线。绝不能用电线搬运、拉动电动
工具或拔出其插头。使电线远离热源、油、锐
边或运动部件。受损或缠绕的软线会增加电
击危险。
e) 当在户外使用电动工具时，使用适合户外使
用的外接软线。适合户外使用的软线将减少
电击危险。
f) 如果在潮湿环境下操作电动工具是不可避免
的，应使用剩余电流动作保护器（RCD）。使用
RCD可减小电击危险。
3) 人身安全
a) 保持警觉，当操作电动工具时关注所从事的
操作并保持清醒。当你感到疲倦，或在有药
物、酒精或治疗反应时，不要操作电动工具。
在操作电动工具时瞬间的疏忽会导致严重人
身伤害。
b) 使用个人防护装置。始终佩戴护目镜。安全装
置，诸如适当条件下使用防尘面具、防滑安全
鞋、安全帽、听力防护等装置能减少人身伤
害。
c) 防止意外起动。确保开关在连接电源和/或电
池组、拿起或搬运工具时处于关断位置。手指
放在已接通电源的开关上或开关处于接通时
插入插头可能会导致危险。
d) 在电动工具接通之前，拿掉所有调节钥匙或
扳手。遗留在电动工具旋转零件上的扳手或
钥匙会导致人身伤害。
e) 手不要伸展得太长。时刻注意立足点和身体
平衡。这样在意外情况下能很好地控制电动
工具。
f) 着装适当。不要穿宽松衣服或佩戴饰品。让
你的衣服、手套和头发远离运动部件。宽松衣
服、佩饰或长发可能会卷入运动部件中。
g) 如果提供了与排屑、集尘设备连接用的装置，
要确保他们连接完好且使用得当。使用这些
装置可减少尘屑引起的危险。
4) 电动工具使用和注意事项
a) 不要滥用电动工具，根据用途使用适当的电
动工具。选用适当设计的电动工具会使你工
作更有效、更安全。
b) 如果开关不能接通或关断工具电源，则不能
使用该电动工具。不能用开关来控制的电动
工具是危险的且必须进行修理。
c) 在进行任何调节、更换附件或贮存电动工具
之前，必须从电源上拔掉插头和／或使电池
组与工具脱开。这种防护性措施将减少工具
意外起动的危险。
d) 将闲置不用的电动工具贮存在儿童所及范围
之外，并且不要让不熟悉电动工具或对这些
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