Further Safety Instructions For All Saws - Hilti WSC 85 Mode D'emploi

for operations different from those
intended could result in a hazardous
situation.
1.1.5 Service
a) Have your power tool serviced by a
qualified repair person using only
genuine replacement parts. This will
ensure that the safety of the power tool
is maintained.
1.1.6 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.
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.
Printed: 08.07.2013 | Doc-Nr: PUB / 5071332 / 000 / 01
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.
1.1.7 Further safety instructions for all
saws
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.
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
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.
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 making a
"plunge cut" into existing walls or other
blind areas. The protruding blade may
cut objects that can cause kickback.
1.1.8 Safety instructions for circular
saws with dual actuation of lower
blade guard (both sides of blade)
a) 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.
b)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.
c) 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 auto -
matically.
d)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.
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