Causes And Operator Prevention Of Kickback - DeWalt DW934 Guide D'utilisation

• Periodically check the battery pack and charger for accu-
mulated metal chips. Remove accumulated metal chips.
Maintaining a clean work environment will reduce the risk of elec-
tric shock or fire.
• Do not use oil or cutting fluids with the metal saw. Do not
use cleaning fluids to clean front window. Cleaning fluids,
cutting fluids, or oils could harm the plastic in the front window,
interferring with the safe operation of the saw.
WARNING: Do not operate the saw with a damaged or miss-
ing sight or front window. If window is damaged or missing, have
the saw serviced at an authorized service center. If the saw is oper-
ated without the window, metal chips could fly through the guard
and cause personal injury.
Causes and Operator Prevention of
Kickback
KICKBACK is a sudden reaction to a pinched, bound, or mis-
aligned 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 operator.
• KICKBACK is the result of tool misuse and/or incorrect operat-
ing procedures or conditions and can be avoided by taking
proper precautions as given below:
• Maintain a firm grip with both hands on the saw and posi-
tion your body and arm to allow you to resist KICKBACK
forces. KICKBACK forces can be controlled by the operator, if
proper precautions are taken.
• 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.
• When restarting a saw in the workpiece, center the saw
blade in the kerf and check that the 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.
• Support large panels to minimize the risk of blade pinch-
ing and KICKBACK. Large panels tend to sag under their own
weight. Support must be placed under the panel on both sides,
near the line of cut and near the edge of the panel.
• Do not use dull or damaged blade. Unsharpened or improp-
erly set blades produce narrow kerf causing excessive friction,
blade binding, and KICKBACK.
• 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.
• Use extra caution when making a "Pocket Cut" into exist-
ing walls or other blind areas. The protruding blade may cut
objects that can cause kickback.
NOTE: Although the above information references wood, this
saw is only to be used to cut metal. Kickback can occur when cut-
ting metal.
CAUTION: Wear appropriate hearing protection during use.
Under some conditions and duration of use, noise from this prod-
uct may contribute to hearing loss.
CAUTION: Always wear eye protection. Goggles should meet
or exceed ANSI Z87.1 requirements.
4