DeWalt DWS780 Manual De Instrucciones página 5

r ) After finishing the cut, release the switch, hold the saw head down and wait for
the blade to stop before removing the cut-off piece. Reaching with your hand near the
coasting blade is dangerous.
s ) Hold the handle firmly when making an incomplete cut or when releasing the
switch before the saw head is completely in the down position. The braking action of
the saw may cause the saw head to be suddenly pulled downward, causing a risk of injury.
Additional Safety Rules for Miter Saws

WARNING: Do not allow familiarity (gained from frequent use of your saw) to replace
safety rules. Always remember that a careless fraction of a second is sufficient to inflict
severe injury.

WARNING: Never modify the power tool or any part of it. Damage or personal injury
could result.
• DO NOT OPERATE THIS MACHINE until it is completely assembled and installed according to
the instructions. A machine incorrectly assembled can cause serious injury.
• OBTAIN ADVICE from your supervisor, instructor, or another qualified person if you are not
thoroughly familiar with the operation of this machine. Knowledge is safety.
• FOLLOW ALL WIRING CODES and recommended electrical connections to prevent shock
or electrocution. Protect electric supply line with at least a 15 ampere time-delay fuse or a
circuit breaker.
• MAKE CERTAIN the blade rotates in the correct direction. The teeth on the blade should point in
the direction of rotation as marked on the saw.
• TIGHTEN ALL CLAMP HANDLES, knobs and levers prior to operation. Loose clamps can cause
parts or the workpiece to be thrown at high speeds.
• BE SURE all blade and blade clamps are clean, recessed sides of blade clamps are against blade
and arbor screw is tightened securely. Loose or improper blade clamping may result in damage
to the saw and possible personal injury.
• DO NOT OPERATE ON ANYTHING OTHER THAN THE DESIGNATED VOLTAGE for the saw.
Overheating, damage to the tool and personal injury may occur.
• DO NOT WEDGE ANYTHING AGAINST THE FAN to hold the motor shaft. Damage to tool and
possible personal injury may occur.
• NEVER CUT FERROUS METALS or masonry. Either of these can cause the carbide tips to fly off
the blade at high speeds causing serious injury.
• NEVER PLACE HANDS CLOSER THAN 4" (100 mm) FROM THE BLADE.
• NEVER HAVE ANY PART OF YOUR BODY IN LINE WITH THE PATH OF THE SAW BLADE.
Personal injury will occur.
• NEVER APPLY BLADE LUBRICANT TO A RUNNING BLADE. Applying lubricant could cause
your hand to move into the blade resulting in serious injury.
• DO NOT place either hand in the blade area when the saw is connected to the power source.
Inadvertent blade activation may result in serious injury.
• NEVER REACH AROUND OR BEHIND THE SAW BLADE. A blade can cause serious injury.
• DO NOT REACH UNDERNEATH THE SAW unless it is unplugged and turned off. Contact with
saw blade may cause personal injury.
SECURE THE MACHINE TO A STABLE SUPPORTING SURFACE. Vibration can possibly cause
•
the machine to slide, walk, or tip over, causing serious injury.
USE ONLY CROSSCUT SAW BLADES recommended for miter saws. For best results, do not
•
use carbide tipped blades with hook angles in excess of 7 degrees. Do not use blades with deep
gullets. These can deflect and contact the guard, and can cause damage to the machine and/or
serious injury.
• USE ONLY BLADES OF THE CORRECT SIZE AND TYPE specified for this tool to prevent
damage to the machine and/or serious injury.
• INSPECT BLADE FOR CRACKS or other damage prior to operation. A cracked or damaged
blade can come apart and pieces can be thrown at high speeds, causing serious injury. Replace
cracked or damaged blades immediately.
• CLEAN THE BLADE AND BLADE CLAMPS prior to operation. Cleaning the blade and blade
clamps allows you to check for any damage to the blade or blade clamps. A cracked or damaged
blade or blade clamp can come apart and pieces can be thrown at high speeds, causing
serious injury.
• DO NOT USE WARPED BLADES. Check to see if the blade runs true and is free from vibration. A
vibrating blade can cause damage to the machine and/or serious injury.
• DO NOT use lubricants or cleaners (particularly spray or aerosol) in the vicinity of the plastic
guard. The polycarbonate material used in the guard is subject to attack by certain chemicals.
• KEEP GUARD IN PLACE and in working order.
• ALWAYS USE THE KERF PLATE AND REPLACE THIS PLATE WHEN DAMAGED. Small chip
accumulation under the saw may interfere with the saw blade or may cause instability of
workpiece when cutting.
• USE ONLY BLADE CLAMPS SPECIFIED FOR THIS TOOL to prevent damage to the machine
and/or serious injury.
• CLEAN THE MOTOR AIR SLOTS of chips and sawdust. Clogged motor air slots can cause the
machine to overheat, damaging the machine and possibly causing a short which could cause
serious injury.
• NEVER LOCK THE SWITCH IN THE "ON" POSITION. Severe personal injury may result.
• NEVER STAND ON TOOL. Serious injury could occur if the tool is tipped or if the cutting tool is
unintentionally contacted.
• ADDITIONAL INFORMATION regarding the safe and proper operation of power tools (i.e., a
safety video) is available from the Power Tool Institute, 1300 Sumner Avenue, Cleveland, OH
44115-2851 (www.powertoolinstitute.com). Information is also available from the National
Safety Council, 1121 Spring Lake Drive, Itasca, IL 60143-3201. Please refer to the American
National Standards Institute ANSI 01.1 Safety Requirements for Woodworking Machines and the
U.S. Department of Labor OSHA 1910.213 Regulations.

WARNING: Cutting plastics, sap coated wood, and other materials may cause melted
material to accumulate on the blade tips and the body of the saw blade, increasing the risk
of blade overheating and binding while cutting.

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.
• 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 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
S12.6 (S3.19) during use. Under some conditions and duration of use, noise from this
product may contribute to hearing loss.
• Air vents often cover moving parts and should be avoided. Loose clothes, jewelry or long
hair can be caught in moving parts.
• 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 will 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 lower the gauge number, the heavier the cord.
Minimum gauge for Cord sets
Total length of Cord in Feet
Volts
120 V 25 (7.6)
240 V 50 (15.2) 100 (30.5) 200 (61.0) 300 (91.4)
Ampere Rating
More not
Than More
Than
0 6 18
6 10 18
10 12 16
12 16 14
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
RPM .................... revolutions per minute
sfpm ................... surface feet per minute
SPM .................... strokes per minute
A ......................... amperes
W ........................ watts
English
(meters)
50 (15.2) 100 (30.5) 150 (45.7)
American Wire gauge
16 16 14
16 14 12
16 14 12
12 Not Recommended
or AC ........... alternating current
or AC/DC .... alternating or direct current
...................... Class II Construction (double insulated)
n o ....................... no load speed
n ......................... rated speed
...................... earthing terminal
..................... safety alert symbol
..................... visible radiation
..................... wear respiratory protection
..................... wear eye protection
..................... wear hearing protection
..................... read all documentation
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