Specific Safety Rules; Causes And Operator Prevention Of Kickback - Ryobi LCS-180 Manual De Utilización

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SPECIFIC SAFETY RULES

Q
DANGER! 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.
NOTE: For circular saws with 140mm or smaller
diameter blades, the "Keep your second hand on
auxiliary handle, or motor housing " may be omitted.
Q
Do not reach underneath the workpiece.
The guard cannot protect you from the blade below
the workpiece.
Q
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.
Q
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.
Q
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 tool "live" and shock the operator.
Q
When ripping, always use a rip fence or straight
edge guide. This improves the accuracy of cut and
reduces the chance of blade binding.
Q
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.
Q
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.
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:
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Q
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.
NOTE: For circular saws with 140mm or smaller diameter
blades, the words "with both hands" may be omitted.
Q
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.
Q
When restarting a saw in the workpiece, center
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.
Q
Support large panels to minimise 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.
Q
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.
Q
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.
Q
Check lower guard for proper closing before each
use. Do not operate 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.
Q
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 buildup of debris.
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