DeWalt DCF850 Guide D'utilisation page 5

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.
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.
Impact Wrench Safety Warnings - All Operations
• Hold the 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.
• Wear ear protectors during use. Exposure to noise can
cause hearing loss.

WARNING: Impact wrenches are not torque
wrenches. DO NOT use this tool for tightening fasteners
to specified torques. An independent, calibrated torque
measurement device such as a torque wrench should be used
when under tightened or over tightened fasteners can lead to
the failure of the joint.
• Wear safety goggles or other eye protection.
Hammering and drilling operations cause chips to fly.
Flying particles can cause permanent eye damage.
• 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.
• Accessories and tools get hot during operation. Wear
gloves when touching them.
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.
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
English
BPM .................... beats per minute
IPM ..................... impacts per minute
OPM .................... oscillations per
minute
RPM .................... revolutions per
minute
5