Porter Cable 423MAG Manual De Instrucciones página 2

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Fig. 12 Fig.13
BLADE
To minimize the risk of eye injury, always wear ANSI Z87.1
approved eye protection. Carbide is a hard but brittle material. Foreign
objects in the work piece such as wire or nails can cause tips to crack or
break. Only operate saw when proper saw blade guard is in place. Mount
blade securely in proper rotation before using, and always use a clean,
sharp blade
NEVER cut ferrous metals (those with any iron or steel con-
tent), masonry, glass or tile with this saw. Damage to the saw and personal
injury may result.
A dull blade will cause inefficient cutting, overload on the saw motor, exces-
sive splintering and increase the possibility of kickback. Change blades
when it is no longer easy to push the saw through the cut, when the motor is straining, or when
excessive heat is built up in the blade. It is a good practice to keep extra blades on hand so that sharp
blades are available for immediate use. Dull blades can be sharpened in most areas; see SAWS-
SHARPENING in the yellow pages. Hardened gum on the blade can be removed with kerosene,
turpentine, or oven cleaner. Anti-stick coated blades can be used in applications where excessive
build-up is encountered, such as pressure treated and green lumber.
LOWER BLADE GUARD
The lower blade guard is a safety feature which reduces the risk of serious personal
injury. Never use the saw if the lower guard is missing, damaged, misassembled or not working
properly. Do not rely on the lower blade guard to protect you under all circumstances. Your safety
depends on following all warnings and precautions as well as proper operation of the saw. Check
lower guard for proper closing before each use as outlined in Additional Safety Rules for Circular
Saws. If the lower blade guard is missing or not working properly, have the saw serviced before using.
To assure product safety and reliability, repair, maintenance and adjustment should be performed by
an authorized PORTER-CABLE service center or other qualified service organization, always using
identical replacement parts. DO NOT LUBRICATE THIS AREA. The hub has a dry film lubricated
surface that does not need oiling.
TO ADJUST DEPTH-OF-CUT FOR NORMAL CUTTING
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.
Adjust the depth-of-cut so that the saw blade barely protrudes through the thickness of the
workpiece. To adjust:
1. Lift the depth adjustment locking lever (A) Fig. 6, located at the rear of the saw.
2. Raise or lower the saw housing to the correct level.
NOTE: The upper guard (B) Fig. 6 is marked in 1/4" increments for convenience in setting the
depth of cut. Align the depth segment mark (C) Fig. 6 with the desired depth marking on the
guard.
3. Press the depth-adjusting locking lever down firmly to lock the saw in the selected position.
TO ADJUST FOR BEVEL CUTS
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.
1. Loosen the bevel-adjusting lever (A) Fig. 7.
2. Tilt the saw base until the desired graduation line on the bevel segment (B) Fig. 7 aligns with
the indicator (C) Fig. 7 on the bracket.
3. Tighten the bevel-adjusting lever firmly.
4. For bevel cuts greater than 45°, set the guide on the 45° mark. Lift the bevel-adjusting
lever into the slot (D) Fig. 7 and move the saw base to the greater angle. Tighten the bevel-
adjusting lever firmly.
0° POSITIVE STOP
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.
The saw is equipped with an adjustable positive stop at 0°. Check the accuracy of this stop
periodically. To adjust:
1. Loosen the bevel adjustment lever (A) Fig. 8, and position the base for a 0° cut. Confirm that
the bevel stop sleeve (B) Fig. 8 is against the 0° stop screw (C).
2. Turn the saw upside down, retract the lower blade guard, and check to see that the blade is
square to the base (Fig. 9).
3. To adjust, loosen the bevel-adjustment knob (A) Fig. 8. While keeping the bevel stop (B) Fig. 8
in contact with the stop screw (C) Fig. 8, use a screwdriver to turn the adjusting screw (A) Fig.
10 until the blade is square.
LINE-OF-CUT INDICATOR
Line-of-cut indicator slots (A) Fig. 11 are provided at the front of the saw base. The right slot is
used to follow a line when making a 0° cut. The left slot is used to follow a line when making a 45°
cut. The straight side of the notch indicates the cut line.
USING THE EXHAUST NOZZLE
DO NOT direct sawdust toward yourself or others. To avoid injury from flying
sawdust, keep the exhaust nozzle either in the forward position or in the closed position. DO NOT
insert foreign objects into the exhaust opening.
The exhaust nozzle in the closed position (Fig. 12) directs the sawdust to the rear of the saw. The
exhaust nozzle pointing forward (Fig. 13) directs the sawdust to the front. To change the position
of the nozzle, push down and turn the nozzle to the new position. An accessory vacuum hose
assembly is available for connecting the exhaust nozzle in the forward position directly to a shop-
type vacuum cleaner.
INSTALLING THE OPTIONAL RIP GUIDE
To avoid personal injury and damage to workpiece, extend the rip guide through both
slots in the base.
To avoid personal injury and damage to workpiece, extend the rip guide through both
slots in the base.
1. Insert the rip guide (A) Fig. 14 through the slots (B). Slide the guide in until it extends through
the both slots in the sawbase.
2. Place the compression spring on the thumb screw (C) Fig. 14 (supplied with the rip guide),
and thread into the hole in the saw base. DO NOT TIGHTEN.
3. Adjust the rip guide for the desired width of cut and tighten the thumb screw.
HOW TO USE THE SAW
Do not operate your tool on a current on which the voltage is not within correct limits.
Do not operate tools rated AC only on DC current. To do so may seriously damage the tool.
If the guard binds or is sluggish, return the saw to your nearest authorized Porter-Cable
service center for repair.
For maximum protection, effective control of this powerful saw requires two-handed
operation. support the work properly and hold the saw firmly to prevent loss of control which could
cause injury. Refer to Figure 15 for the proper way to hold the saw.
Stay alert and maintain a firm grip on the saw. Release the switch immediately if the
blade binds or the saw stalls. Keep your blade sharp. Properly support panels (Fig. 16). Use a fence
or a straight edge guide when ripping. DO NOT force the tool. DO NOT remove the saw from the
workpiece while the blade is moving.
To help reduce the risk of personal injury, always clamp work. Don't try to hold short
pieces by hand! Remember to support cantilevered and over hanging material. Use caution when
sawing material from below.
Be sure that the saw is up to full speed before blade contacts material to be cut.
Starting the saw with blade against material to be cut or pushed forward into kerf can result in kick-
back and personal injury.
KICKBACK
When the saw blade becomes pinched or twisted in the cut, kickback can occur. The saw is thrust
rapidly back 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 backward. When the blade becomes
twisted or misaligned in the cut, the teeth at the back edge of the blade can dig into the top sur-
face of the wood causing the blade to climb out of the kerf and jump back toward the operator.
Kickback is more likely to occur when any of the following conditions exist.
1. IMPROPER WORKPIECE SUPPORT
A. Sagging or improper lifting of the cut off piece can cause pinching of the blade and lead to
kickback.
B. Cutting through material supported at the outer ends only can cause kickback. As the material
weakens it sags, closing down the kerf and pinching the blade.
C. Cutting off a cantilevered or overhanging piece of material from the bottom up in a vertical
direction can cause kickback. The falling cut off piece can pinch the blade.
D. Cutting off long narrow strips (as in ripping) can cause kickback. The cut off strip can sag or
twist closing the kerf and pinching the blade.
E. Snagging the lower guard on a surface below the material being cut momentarily reduces
operator control. The saw can lift partially out of the cut increasing the chance of blade twist.
2. IMPROPER DEPTH OF CUT SETTING ON SAW
To make the most efficient cut, the blade should protrude only far enough to expose 1/2 of a
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Fig. 15
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Fig. 19
tooth. This allows the shoe to support the blade and minimizes twisting and pinching in the mate-
rial. See the section titled "Cutting Depth Adjustment."
3. BLADE TWISTING (MISALIGNMENT IN CUT)
A. Pushing harder to cut through a knot, a nail, or a hard grain area can cause the blade to
twist.
B. Trying to turn the saw in the cut (trying to get back on the marked line) can cause blade
twist
C. Over-reaching or operating the saw with poor body control (out of balance), can result in twist-
ing the blade.
D. Changing hand grip or body position while cutting can result in blade twist.
E. Backing up the saw to clear blade can lead to twist if it is not done carefully.
4 MATERIALS THAT REQUIRE EXTRA ATTENTION
A. Wet lumber
B. Green lumber (material freshly cut or not kiln dried)
C. Pressure treated lumber (material treated with preservatives or anti-rot chemicals)
5. USE OF DULL OR DIRTY BLADES
Dull blades cause increased loading of the saw. To compensate, an operator will usually push
harder which further loads the unit and promotes twisting of the blade in the kerf. Worn blades
may also have insufficient body clearance which increases the chance of binding and increased
loading.
6. LIFTING THE SAW WHEN MAKING BEVEL CUT
Bevel cuts require special operator attention to proper cutting techniques - especially guidance
of the saw. Both blade angle to the shoe and greater blade surface in the material increase the
chance for binding and misalignment (twist) to occur.
7. RESTARTING A CUT WITH THE BLADE TEETH JAMMED AGAINST THE MATERIAL
The saw should be brought up to full operating speed before starting a cut or restarting a cut
after the unit has been stopped with the blade in the kerf. Failure to do so can cause stalling and
kickback.
Any other conditions which could result in pinching, binding, twisting, or misalignment of the blade
could cause kickback. Refer to the sections on "Adjustments And Set-Up" and "Operation" for pro-
cedures and techniques that will minimize the occurrence of kickback.
WORKPIECE SUPPORT
Hands should be kept away from cutting area to reduce the risk of injury.
The power cord should be positioned clear of the cutting area so that it will not get
caught or hung up on the work and to prevent electric shock.
To avoid kickback, DO support board or panel NEAR the cut. DON'T support board or panel away
from the cut.
When operating the saw, keep the cord away from the cutting area to prevent electric
shock.
It is important to support the work properly and to hold the saw firmly to prevent loss
of control which could cause personal injury.
Always turn off tool and unplug the tool before making any adjustments or removing or
installing attachments or accessories. Such preventative safety measures reduce the risk of starting
the tool accidentally.
Place the work with its "good" side - the one on which appearance is most important - down. The
saw cuts upward, so any splintering will be on the work face that is up when you saw it.
CROSS-CUTTING
Cutting directly across the grain of a piece of lumber is called crosscutting. Position the work so
that the cut will be on the left.
RIPPING
Cutting wood lengthwise is referred to as ripping. This operation is performed in the same manner
as crosscutting with the exception of supporting the workpiece. If the workpiece is supported on
a large table, bench, or floor, place several pieces of scrap stock approximately one inch thick
beneath the workpiece to allow clearance for the portion of the saw blade that extends through
the material (Fig. 17). When using saw horses, place 2 x 4's lengthwise between the horses and
the large sheets of paneling or thin plywood to prevent the workpiece from sagging in the center.
For narrow rip cuts, use the rip guide (available as an accessory). Guide the saw by keeping the
inner face of the rip guide (Fig. 18) tight against the edge of the board.
For making wider cuts (plywood and wide sheets), tack or clamp a wooden guide strip to guide
the left edge of the saw base (Fig. 17).
NOTE: Adjust the depth-of-cut to allow for the thickness of the wooden guide strip.
BEVEL CUTTING
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.
Use the lever (A) Fig. 20 provided on the lower blade guard when you have to
retract the lower blade guard manually.
Bevel cuts are made in the same manner as crosscuts and rip cuts. The difference is that the
blade is set at an angle between 0° and 45° (Fig. 19).
The bevel cut made at an angle to the edge of a board is called a compound cut. Certain
compound cuts may require you to manually retract the lower blade guard to allow the blade to
enter into and/or through the cut.
POCKET CUTS (PLUNGE CUTTING)
Use the lever (A) Fig. 21 provided on the lower guard when you have to retract the
guard manually.
Keep your hands and fingers away from the blade.
Let the saw come to a complete stop before removing it from the workpiece.
Start the motor and lower the blade into the work. After the blade has cut through, and the base
rests flat on the work, follow the line to the corner.
A pocket cut is one which must be made inside the area of the workpiece and not starting from
the edge. Mark the area clearly with lines on all sides. Start near the corner of one side and place
the front edge of the saw base firmly on the workpiece. Hold the saw up so that the blade clears
the material. Confirm that you have adjusted the blade properly for the depth-of-cut. Push the
lower blade guard lever all the way back so the blade is exposed (Fig. 21).
Use a keyhole or bayonet saw to cut clean corners.
For assistance with your tool, visit our website at www.porter-cable.com for a list of service centers, or
call the Porter-Cable Customer Care Center at (888) 848-5175.
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.
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 respiratory protection.
REPAIRS
For assistance with your tool, visit our website at www.porter-cable.com for a list of service centers, or
call the Porter-Cable Customer Care Center at (888) 848-5175.
CLEANING
Periodically blowing dust and chips out of the motor housing using clean, dry com-
pressed air is a suggested maintenance procedure. To reduce the risk of serious personal injury,
ALWAYS wear ANSI Z87.1 safety glasses while using compressed air.
When cleaning, use only mild soap and a damp cloth on plastic parts. Many house-
hold cleaners contain chemicals which could seriously damage plastic. Also, do not use gasoline,
turpentine, lacquer or paint thinner, dry cleaning fluids or similar products which may seriously dam-
age plastic parts. NEVER let any liquid get inside the tool; NEVER immerse any part of the tool into
a liquid.
FAILURE TO START
Should your tool fail to start, check to make sure the prongs on the cord plug are making good contact
in the outlet. Also, check for blown fuses or open circuit breakers in the line.
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