DeWalt dc742 Instruction Manual
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DEWALT Industrial Tool Co., 701 Joppa Road, Towson, MD 21286
(MAY14)
Part No. N400408
DC720, DC725, DC730, DC742, DCD760, DCD775
Copyright 2007, 2008, 2009, 2013, 2014 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.
Definitions:
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: Indicates a potentially hazardous situation which, if not avoided, could
result in death or serious injury.
_ CAUTION: Indicates a potentially hazardous situation which, if not avoided, may result
in minor or moderate
injury.
NOTICE: indicates a practice not related
to personal injury which, if not avoided, may
result in property
damage.
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: Toreduce the risk of injury, read the instruction manual.
General
Power
Tool
Safety
Warnings
_
ARNING! 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.
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 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.
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.
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 wll/ 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 andlor
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 accidental/y,
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.
t) 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 bums 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 bums.
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 too/is maintained.
Drill/Driver/Hammerdrill
Safety
Warnings
• Wear ear protectors when impact drilling. Exposure to noise can cause hearing loss.
• Use auxiliary handle(s), if supplied with the tooL Loss of control can cause personal injury.
• Hold power tool by insulated gripping surfaces, when performing an operation where
the cutting accessory may contact hidden wiring. Cutting accessory contacting a "live"
wire may make exposed metal parts of the power tool "live" and could give the operator an
electric shock.
• 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.
• Hammer bits and tools get hot during operation. Wear gloves when touching them.
• Air vents often cover moving parts and should be avoided. Loose clothes, jewelry or long
hair can be caught in moving parts.
_ 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 $12.6 ($3.19) hearing protection,
• NIOSH/OSHA/MSHA
respiratory protection.
A 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 chromMm from chemically-treated lumber.
Your risk from these exposures varies, depending on how often you do this type of work. Toreduce
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.
A WARNING: Use of this tool can generate and/or disperse 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
$12.6 ($3.19) 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 wll/ 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)
[] ................... Class II Construction
(double insulated)
.../min ............ per minute
IPM ................. impacts per minute
SPM ............... strokes per minute
A......................... amperes
W........................ watts
"_ or AC ............. alternating current
or AC/DC ......alternating or direct current
no ....................... no load speed
n ......................... rated speed
@ ....................... earthing terminal
A ........................ safety alert symbol
BPM ................... beats per minute
RPM ................... revolutions per minute
sfpm ................... surface feet 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 U.S. 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. (Medical note: The liquid is 25-35%
solution of potassium hydroxide.)
SPECIFIC SAFETY INSTRUCTIONS
FOR LITHIUM ION (Li-lon)
• 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 persist, seek medical attention.
,_ WARNING: Bum hazard. Battery liquid may be flammable if exposed to spark or flame.
The
RBRC
TM Seal
The RBRC
TM
(Rechargeable Battery Recycling Corporation) 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
TM
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, 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
TM
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 instructions
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: Bum hazard. Toreduce the risk of injury, charge only DEWALTrechargeable batteries.
Other types of batteries may burst causing personal injury and damage.
NOTICE: 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, 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 to clean.
• 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 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.
• 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 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.
• An extension
cord must have adequate
wire size (AWG or American
Wire Gauge) for
safety. The smaller the gauge number of the wire, the greater the capacity of the cable, that is
16 gauge has more capacity than 18 gauge. An undersized cord wll/ cause a drop in line voltage
resulting in loss of power and overheating. When using more than one extension to make up
the total length, be sure each individual extension contains at least the minimum wire size. The
following table shows the correct size to use depending on cord length and nameplate ampere
rating. If in doubt, use the next heavier gauge. The smaller the gauge number, the heavier the
cord.
