DeWalt DC840 Bruksanvisning
                    DeWalt
                    
                    Skruvmaskin
                    
                    DC840
                
                                
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INSTRUCTION MANUAL
GUIDE D’UTILISATION
MANUAL DE INSTRUCCIONES
INSTRUCTIVO DE OPERACIÓN, CENTROS DE SERVICIO Y PÓLIZA DE 
GARANTÍA.  ADVERTENCIA:  LÉASE  ESTE  INSTRUCTIVO  ANTES  DE 
USAR EL PRODUCTO. 
DEWALT Industrial Tool Co., 701 East Joppa Road, Baltimore, MD 21286       (MAY09)
Part No. N028530     DC820, etc.      Copyright © 2007, 2008, 2009 DEWALT
The following are trademarks for one or more DEWALT power tools: the yellow and black 
color scheme; the “D” shaped air intake grill; the array of pyramids on the handgrip; the kit box 
configuration; and the array of lozenge-shaped humps on the surface of the tool.
Defi nitions: Safety Guidelines 
The definitions below describe the level of severity for each signal word. Please read 
the manual and pay attention to these symbols.
DANGER: Indicates an imminently hazardous situation which, if not avoided, will 
result in death or serious injury.
WARNING: could Indicates a potentially hazardous situation which, if not avoided,   
result in death or serious injury.
CAUTION: Indicates a potentially hazardous situation which, if not avoided, may 
result in minor or moderate injury.
CAUTION: Used without the safety alert symbol indicates a potentially hazardous 
situation which, if not avoided, may result in property damage.
IF YOU  HAVE  ANY  QUESTIONS OR COMMENTS  ABOUT THIS  OR ANY  DEWALT TOOL, 
CALL US TOLL FREE AT: 1-800-4-DEWALT (1-800-433-9258). 
 WARNING: To reduce the risk of injury, read the instruction manual.
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 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.
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  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 energising 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 jewellery. Keep your hair, clothing and 
gloves away from moving parts. Loose clothes, jewellery 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.
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 the battery pack 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. 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.
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.
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.
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.
Additional Specifi c Safety Rules
•  Hold power tool by insulated gripping surfaces when performing an operation where 
the  fastener  may  contact  hidden  wiring.  Fasteners  contacting  a  “live”  wire  may  make 
exposed metal parts of the power tool “live” and could give the operator an electric shock.
•  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 of 
control.
•  Wear safety goggles or other eye protection. Hammering and drilling operations  cause 
chips to fly. Flying particles can cause permanent eye damage.
•  Bits, sockets and tools get hot during operation. Wear gloves when touching them.
•  Do not operate this tool for long periods of time. Vibration caused by tool action may be 
harmful to your hands and arms. Use gloves to provide extra cushion and limit exposure by 
taking frequent rest periods.
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  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 (CCA).
Your  risk  from  these  exposures  varies,  depending  on  how  often  you  do  this  type  of  work. 
To  reduce  your  exposure  to  these  chemicals: work in a well ventilated area,  and  work  with 
approved safety equipment, such as those dust masks that are specially designed to filter out 
microscopic particles.
•  Avoid prolonged contact with dust from power sanding, sawing, grinding, drilling, and 
other construction activities. Wear protective clothing and wash exposed areas with 
soap and water. Allowing dust to get into your mouth, eyes, or lay on the skin may promote 
absorption of harmful chemicals. 
WARNING: Use of this tool can generate and/or disburse dust, which may cause serious 
and  permanent  respiratory  or  other  injury.  Always  use  NIOSH/OSHA  approved  respiratory 
protection appropriate for the dust exposure. Direct particles away from face and body.
WARNING:  Always  wear  proper  personal  hearing  protection  that  conforms  to  ANSI 
S12.6 (S3.19) during use. Under some conditions and duration of use, noise from this product 
may contribute to hearing loss.
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. 
•  The label on your tool may include the following symbols. The symbols and their definitions 
are as follows:
V ......................volts  A ......................amperes
Hz ....................hertz  W .....................watts
min ..................minutes   ................... alternating current
 ...............direct current   ...................alternating or direct current
 ....................Class I Construction  no ....................no load speed
 ........................(grounded)   ....................earthing terminal
 ....................Class II Construction   ....................safety alert symbol
 ........................(double insulated)   BPM ................beats per minute
…/min .............per minute  RPM ................revolutions per minute
IPM..................impacts per minute
Important Safety Instructions for All Battery Packs
When  ordering  replacement  battery  packs,  be  sure  to  include  catalog  number  and  voltage. 
Consult the chart at the end of this manual for compatibility of chargers and battery packs.
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 procedures outlined.
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 or fumes.
•  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 
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 store or use the tool and battery pack in locations where the temperature may 
reach or exceed 105°F (40˚C) (such as outside sheds or metal buildings in summer).
DANGER:  Electrocution  hazard.  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 center for recycling.
NOTE:  Battery  storage and  carrying  caps  are  provided  for use  whenever  the  
battery is out of the tool or charger. Remove cap before placing battery in charger 
or tool.
WARNING:  Fire  hazard.  Do  not  store  or  carry  battery  so  that  metal 
objects can contact exposed battery terminals. For example, do not place 
battery in aprons, pockets, tool boxes, product kit boxes, drawers, etc., with loose nails, screws, 
keys, etc. without battery cap. Transporting batteries can possibly cause fires if the battery 
terminals inadvertently come in contact with conductive materials such as keys, coins, 
hand tools and the like. The US Department of Transportation Hazardous Material Regulations 
(HMR)  actually  prohibit  transporting  batteries  in  commerce  or  on  airplanes  (i.e.,  packed  in 
suitcases and  carry-on luggage) UNLESS they  are properly  protected from short circuits. So 
when transporting individual batteries, make sure that the battery terminals are protected and 
well insulated from materials that could contact them and cause a short circuit.
SPECIFIC SAFETY INSTRUCTIONS FOR NICKEL CADMIUM (NiCd) OR NICKEL METAL 
HYDRIDE (NiMH)
•  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.
•  A small leakage of liquid from the battery pack cells may occur under extreme usage 
or temperature conditions. This does not indicate a failure. 
  However, if the outer seal is broken:
a.  and the battery liquid gets on your skin, immediately wash with soap and water for several 
minutes.
b.  and the battery liquid gets into your eyes, flush them with clean water for a minimum of 
10 minutes and seek immediate medical attention. (  The liquid is 25-35% Medical note:
solution of potassium hydroxide.)
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 are burned.
•  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 persists, seek medical attention.
WARNING: Burn hazard. Battery liquid may be flammable if exposed to spark or flame. 
The RBRC™ Seal
The  RBRC™  (Rechargeable  Battery  Recycling  Corp oration)  Seal  on  the  nickel  
cadmium, nickel metal hydride or lithium ion batteries (or battery packs) indicate 
that the costs to recycle these batteries (or battery packs) at the end of their useful 
life have already been paid by DEWALT. In some areas, it is illegal to place spent 
nickel  cadmium,  nickel  metal  hydride  or  lithium  ion  batteries  in  the  trash  or 
municipal solid waste stream and the RBRC program provides an environmentally 
conscious alternative.
RBRC™ in  cooperation with  DEWALT and  other  battery users,  has established  programs in 
the United States and Canada to facilitate the collection of spent nickel cadmium, nickel metal 
hydride or lithium ion batteries. Help protect our environment and conserve natural resources 
by returning the spent nickel cadmium and nickel cadmium, nickel metal hydride or lithium ion 
batteries to an authorized DEWALT service center or to your local retailer for recycling. You may 
also contact your local recycling center for information on where to drop off the spent battery.
RBRC™ is a registered trademark of the Rechargeable Battery Recycling Corporation.
Important Safety Instructions for All Battery Chargers
SAVE THESE INSTRUCTIONS: This manual contains important safety and operating instruc-
tions for battery chargers.
•  Before using charger, read all instructions and cautionary markings on charger, battery pack, 
and product using battery pack.
DANGER: Electrocution hazard. 120 volts are present at charging terminals. Do not probe 
with conductive objects. Electric shock or electrocution may result.
WARNING: Shock hazard. Do not allow any liquid to get inside charger. Electric shock may 
result.
CAUTION:  Burn  hazard. To  reduce  the  risk  of  injury,  charge  only  DEWALT  rechargeable 
batteries. Other types of batteries may burst causing personal injury and damage.
CAUTION: Under certain conditions, with the charger plugged in to the power supply, the 
exposed  charging  contacts  inside  the  charger  can  be  shorted  by  foreign  material.  Foreign 
materials of a conductive nature such as, but not limited to, 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 to clean.
•  DO NOT attempt to charge the battery pack with any chargers other than the ones in 
this manual. The charger and batter y pack are specifically designed to work together. 
•  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 or electrocution.
•  Do not expose charger to rain or snow.
•  Pull  by  plug  rather  than  cord  when  disconnecting  charger.  This  will  reduce  risk  of 
damage to electric plug and cord.
•  Make  sure  that  cord  is  located  so  that  it  will  not  be  stepped  on,  tripped  over,  or 
otherwise subjected to damage or stress.
If you have questions or comments, contact us.
Pour toute question ou tout commentaire, nous contacter.
Si tiene dudas o comentarios, contáctenos.
1-800-4-D WALT • www.dewalt.comE
DC820, DC822, DC830, DC840 1/2" (13 mm) Cordless Impact Wrench
DC825, DC827, DC835, DC845, DC855, DCF826 1/4" (6.35 mm) Cordless Impact Driver 
DC823, DC833, DC841 3/8" (9.5 mm) Cordless Impact Wrench
DC821, DW059 18 V 1/2" (13 mm) Cordless Impact Wrench
Clé à chocs sans fil DC820, DC822, DC830, DC840 13 mm (1/2 po) / Mandrin à chocs sans fil DC825, DC827, DC835, DC845, DC855, DCF826 
6,35 mm (1/4 po) / Clé à chocs sans fil DC823, DC833, DC841 9,5 mm (3/8 po) / Clé à chocs sans fil DC821, DW059 18 V 13 mm (1/2 po)
Llave de impacto inalámbrica DC820, DC822, DC830, DC840 de 13 mm (1/2") / Destornillador de impacto inalámbrico DC825, DC827, 
DC835, DC845, DC855, DCF826 de 6,35 mm (1/4") / Llave de impacto inalámbrica DC823, DC833, DC841 de 9,5 mm (3/8") / 
Llave de impacto inalámbrica DC821, DW059 de 18 V y 13 mm (1/2")
Produktspecifikationer
| Varumärke: | DeWalt | 
| Kategori: | Skruvmaskin | 
| Modell: | DC840 | 
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