Porter-Cable 423MAG Instruction Manual

Instruction Manual
Manuel d'utilisation
Manual de Instrucciones
®
TO REDUCE THE RISK OF INJURY,
USER MUST READ INSTRUCTION
MANUAL BEFORE OPERATING PRODUCT.
PARA REDUCIR EL RIESGO
DE LESIONES, EL USUARIO
DEBE LEER EL MANUAL DE INSTRUCCIONES ANTES
DE OPERAR EL PRODUCTO
AFIN DE RÉDUIRE LE
RISQUE DE BLESSURES,
L'UTILISATEUR DOIT LIRE LE MODE D'EMPLOI
AVANT D'UTILISER LE PRODUIT.
DEFINITIONS - SAFETY GUIDELINES
indicates an imminently hazardous situation which, if not
avoided, will result in death or serious injury.
indicates a potentially hazardous situation which, if not
avoided, could result in death or serious injury.
indicates a potentially haz ard ous situation which, if not
avoided, may result in minor or mod er ate injury.
used without the safety alert symbol indicates potentially
hazardous situation which, if not avoided, may result in property damage.

General Safety Rules

Read all instructions. Failure to follow all instructions listed below may result in electric
shock, fi re and/or serious injury. The term "power tool" in all of the warnings listed below refers to your
mains-operated (corded) power tool or battery-operated (cordless) power tool.
SAVE THESE INSTRUCTIONS
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
fl ammable 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
anyadapter plugs with earthed (grounded) power tools. Unmodifi ed plugs and matching
outlets will reduce risk of electric shock.
b) Avoid body contact with earthed or grounded surfaces such as pipes, radiators, rang-
es 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. Use only 3-wire extension cords that
have 3-prong grounding-type plugs and 3-pole receptacles that accept the tool's plug.
e) When operating a power tool outdoors, use an extension cord suitable for outdoor
use. If an extension cord is to be used outdoors, it must be marked with the suffi x W-A or
W following the cord type designation. Use of a cord suitable for outdoor use reduces the
risk of electric shock. When using an extension cord, be sure to use one heavy enough to
carry the current your product will draw. An undersized cord will cause a drop in line voltage
resulting in loss of power and overheating. 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.
Minimum Gauge for Cord Sets
Volts Total Length of Cord in Feet
120V 0-25
Ampere Rating Gauge of wire in AWG units
From 12 to 16 amps 14
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 infl uence of drugs, al-
cohol or medication. A moment of inattention while operating power tools may result in
serious personal injury.
b) Use safety equipment. Always wear eye protection. Safety equipment such as dust
mask, non-skid safety shoes, hard hat, or hearing protection used for appropriate condi-
tions will reduce personal injuries.
c) Avoid accidental starting. Be sure the switch is in the off-position before plugging in.
Carrying power tools with your fi nger on the switch or plugging in 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 jewelry. Keep your hair, clothing and
gloves away from moving parts. Loose clothes, jewelry or long hair can be caught in mov-
ing parts. Air vents often cover moving parts and should also be avoided.
g) If devices are provided for the connection of dust extraction and collection facilities,
ensure these are connected and properly used. Use of these devices 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 cor-
rect 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 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 tools operation. If dam-
aged, 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 instruc-
tions and in the manner intended for the particular type of power tool, taking into ac-
count 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) Service
a) Have your power tool serviced by a qualifi ed repair person using only identical re-
placement parts. This will ensure that the safety of the power tool is maintained.
ADDITIONAL SPECIFIC SAFETY RULES
Safety Instructions for All Saws
a) Keep hands away from cutting area and the blade. Keep your second hand on auxiliary
handle, or motor housing. If both hands are holding the saw, they cannot be cut by the blade.
b) Do not reach underneath the workpiece. The guard cannot protect you from the blade below
the workpiece.
c) Adjust the cutting depth to the thickness of the workpiece. Less than a full tooth of the
blade teeth should be visible below the workpiece.
d) Never hold piece being cut in your hands or across your leg. Secure the workpiece to a
stable platform. It is important to support the work properly to minimize body exposure,blade
binding, or loss of control.
423MAG
424MAG
Double Insulated Circular Saw
Scie circulaire à double isolation
Sierra Circular con Aislamiento Doble
www.deltaportercable.com
Copyright © 2007 Porter-Cable
Part No. 653761-00 - 06-20-07 - Rev. A
26-50 51-100 101-150
12 Not recommended
e) Hold power tool by insulated gripping surfaces when performing an operation where the
cutting tool may contact hidden wiring or its own cord. Contact with a "live" wire will also
make exposed metal parts of the power tool "live" and shock the operator.
f) When ripping always use a rip fence or straight edge guide. This improves the accuracy of
cut and reduces the chance of blade binding.
g) Always use blades with correct size and shape (diamond versus round) of arbor holes.
Blades that do not match the mounting hardware of the saw will run eccentrically, causing loss
of control.
h) Never use damaged or incorrect blade washers or bolt. The blade washers and bolt were
specially designed for your saw, for optimum performance and safety of operation.
i) Keep your body positioned to either side of the blade, but not in line with the saw
blade. KICKBACK could cause the saw to jump backwards (see Causes and Operator
Prevention of Kickback and KICKBACK).
j) Blades coast after turn off. Serious personal injury may result.
k) Avoid cutting nails. Inspect for and remove all nails from lumber before cutting.
CAUSES AND OPERATOR PREVENTION OF KICKBACK:
• Kickback is a sudden reaction to a pinched, bound or misaligned saw blade, causing an
uncontrolled saw to lift up and out of the workpiece toward the operator.
• When the blade is pinched or bound tightly by the kerf closing down, the blade stalls and the
motor reaction drives the unit rapidly back toward the operator.
• If the blade becomes twisted or misaligned in the cut, the teeth at the back edge of the blade
can dig into the top surface of the wood causing the blade to climb out of the kerf and jump
back toward the operator.
Kickback is the result of saw misuse and/or incorrect operating procedures or conditions and can be
avoided by taking proper precautions as given below:
l) Maintain a firm grip with both hands on the saw and position your arms to resist kickback
forces. Position your body to either side of the blade, but not in line with the blade.
Kickback could cause the saw to jump backwards, but kickback forces can be controlled by
the operator, if proper precautions are taken.
m) When blade is binding, or when interrupting a cut for any reason, release the trigger and
hold the saw motionless in the material until the blade comes to a complete stop. Never
attempt to remove the saw from the work or pull the saw backward while the blade is in
motion or kickback may occur. Investigate and take corrective actions to eliminate the cause
of blade binding.
n) When restarting a saw in the workpiece, centre the saw blade in the kerf and check
that saw teeth are not engaged into the material. If saw blade is binding, it may walk up or
kickback from the workpiece as the saw is restarted.
o) Support large panels to minimize the risk of blade pinching and kickback. Large panels
tend to sag under their own weight. Supports must be placed under the panel on both sides,
near the line of cut and near the edge of the panel.
p) Do not use dull or damaged blades. Unsharpened or improperly set blades produce narrow
kerf causing excessive friction, blade binding and kickback.
q) Blade depth and bevel adjusting locking levers must be tight and secure before making
cut. If blade adjustment shifts while cutting, it may cause binding and kickback.
r) Use extra caution when making a "plunge cut" into existing walls or other blind areas.
The protruding blade may cut objects that can cause kickback.
LOWER GUARD SAFETY INSTRUCTIONS
s) Check lower guard for proper closing before each use. Do not operate the saw if lower
guard does not move freely and close instantly. Never clamp or tie the lower guard into
the open position. If saw is accidentally dropped, lower guard may be bent. Raise the lower
guard with the retracting handle and make sure it moves freely and does not touch the blade or
any other part, in all angles and depths of cut.
t) Check the operation of the lower guard spring. If the guard and the spring are not
operating properly, they must be serviced before use. Lower guard may operate sluggishly
due to damaged parts, gummy deposits, or a build-up of debris.
u) Lower guard should be retracted manually only for special cuts such as "plunge cuts"
and "compound cuts." Raise lower guard by retracting handle and as soon as blade
enters the material, the lower guard must be released. For all other sawing, the lower guard
should operate automatically.
v) Always observe that the lower guard is covering the blade before placing saw down
on bench or floor. An unprotected, coasting blade will cause the saw to walk backwards,
cutting whatever is in its path. Be aware of the time it takes for the blade to stop after switch is
released.
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 paint.
• crystalline silica from bricks and cement and other masonry products.
• 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.
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.
ALWAYS USE SAFETY GLASSES.(ANSI Z87.1) and (CAN/CSA Z94.3) Everyday eye-
glasses 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
SYMBOLS
The label on your tool may include the following symbols. The symbols and their definitions are as
follows:
V....................... volts
Hz .................... hertz
min .................. minutes
............... direct current
.................... Class I Construction
(grounded)
..................... Class II Construction
(double insulated)
BPM ..............beats per minute
SAVE THESE INSTRUCTIONS
MOTOR
Be sure your power supply agrees with nameplate marking. 120 Volts AC/DC means
your saw will operate on alternating or direct current. As little as 10% lower voltage can cause loss
of power and can result in overheating. All Porter Cable tools are factory-tested; if this tool does not
operate, check the power supply.
Accessories must be rated for at least the speed recommended on the tool warning
label. Accessories running over rated speed can fly apart and cause injury. Accessory ratings must
always be above tool speed as shown on tool nameplate.
To reduce the risk of injury, turn unit off and disconnect it from power source
before installing and removing accessories, before adjusting or when making repairs. An
accidental start-up can cause injury.
Avoid contact with the blade teeth to prevent personal injury.
BLADE SELECTION
Your Porter-Cable circular saw is designed for use with 7-1/4" diameter blades that have a 5/8"
diameter bore. Blades must be rated for 6000 RPM operation (or higher).
BLADE BRAKE (Model 424MAG only)
Model 424MAG is equipped with an electric blade brake that energizes automatically when the
trigger switch is released.
REMOVING THE BLADE
To reduce the risk of injury, turn unit off and disconnect it from power source
before installing and removing accessories, before adjusting or when making repairs. An
accidental start-up can cause injury.
DO NOT USE the Quick Change™ blade clamp with any product other than
specified Porter-Cable tools 423MAG and 424MAG.
Avoid contact with the blade teeth to prevent personal injury.
This tool is equipped with a Quik-Change™ blade clamp and is designed to be
tightened hand-tight only. The use of external tools may cause damage to the blade clamp.
Never engage the blade lock while saw is running, or engage in an effort to stop
the tool. Never turn the saw on while the blade lock is engaged. Serious damage to your saw will
result.
1. Push in the arbor lock button (A) Fig. 1 and rotate the blade by hand until the lock engages
the blade arbor.
2. While pressing the arbor lock button, extend the lever on the Quik-Change blade clamp (A)
Fig. 2 and turn it clockwise.
3. Remove the Quik-Change blade clamp, release the arbor lock button, and remove the outer
blade flange.
4. Retract the lower blade guard (A) Fig. 3 and remove the blade.
NOTE: DO NOT use wet lubricants on the Quik-Change blade clamp.
INSTALLING THE BLADE
To reduce the risk of injury, turn unit off and disconnect it from power source
before installing and removing accessories, before adjusting or when making repairs. An
accidental start-up can cause injury.
Avoid contact with the blade teeth to prevent personal injury.
1. Remove any accumulated sawdust or other contaminates from the guards, from around the
arbor and from the blade clamp. Check the lower blade guard to ensure that it is in working
order.
2. Clean the inner blade flange, retract the lower blade guard, and place the new blade on the
arbor. Verify that the teeth point up at the front of the saw (Fig. 4).
3. Place the outer blade flange (A) Fig. 5 on the arbor with the smooth side against the blade.
Mate the flats with those on the arbor.
4. Replace the Quik-Change blade clamp (A) Fig. 2 finger tight by turning it counter-clockwise.
Push in the arbor lock button (A) Fig.1, extend the lever on the Quik-Change blade clamp (A)
Fig. 2, and hand-tighten the assembly securely. Release the arbor lock.
Verify that the Quick Change blade clamp lever is tight and quickly returns to its
closed position before connecting the tool to the power source. If it doesn't return, clear the
debris from the clamp. Visually inspect the blade clamp lever regularly to ensure that it is not
extended during use.
A...........................amperes
W .........................watts
.......................alternating current
n o .........................no load speed
.........................earthing terminal
........................safety alert symbol
.../min .................revolutions or reciprocations
per minute
OPERATION