Ribimex Ribitech PRBAT20 Manuel D'instructions Et D'utilisation page 27

(C) Specific Safety Instructions for all saws
1- Cutting procedures
a) 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.
b) Do not reach underneath the work piece. The guard cannot protect you from the blade below the work
piece.
c) Adjust the cutting depth to the thickness of the work piece. Less than a full tooth of the blade teeth
should be visible below the work piece.
d) Never hold piece being cut in your hands or across your leg. Secure the work piece to a stable
platform. It is important to support the work properly to minimize body exposure, blade binding, or loss of
control.
e) Hold the power tool by insulated gripping surfaces only 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 could give the operator an electric shock.
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 arbour 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.
2- Kickback causes and related warnings
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 work piece 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.
a) 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.
b) 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.
c) When restarting a saw in the work piece, 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 work piece as the
saw is restarted.
d) 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.
e) Do not use dull or damaged blades. Unsharpened or improperly set blades produce narrow kerf causing
excessive friction, blade binding and kickback.
f) 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.
g) Use extra caution when sawing into existing walls or other blind areas. The protruding blade may cut
objects that can cause kickback.
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