Festool HK 85 EB Manual De Instrucciones Original página 18

HK 85 EB
GB
exposure, blade binding, or loss of control.
e. Hold the power tool by insulated gripping sur-
faces, 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 off-centre, causing loss of control.
h. Never use damaged or incorrect blade washers
or bolt. The blade washers and bolt were spe-
cially designed for your saw, for optimum perfor-
mance and safety of operation.
i.Wear suitable protective equip-
ment such as ear protection,
safety goggles, a dust mask for
work which generates dust, and
protective gloves when working
with raw materials and when
changing tools.
Kickbacks causes and related warnings
– kickback is a sudden reaction to a pinched,
jammed or misaligned saw blade, causing an un-
controlled saw to lift up and out of the workpiece
toward the operator;
– when the blade is pinched or jammed tightly by
the kerf closing down, the blade stalls and the
motor reaction drives the unit rapidly back to-
ward 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 to-
ward the operator.
Kickback is the result of saw misuse and/or incor-
rect operating procedures or conditions and can be
avoided by taking proper precautions as given be-
low.
a. Maintain a firm grip with both hands on the saw
and position your arms to resist kickback forc-
es. 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
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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 kick-
back 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 so that the saw teeth
are not engaged into the material. If a saw blade
binds, 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. Unsharp-
ened 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 the 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.
Function of the lower guard
a. Before using the machine, check whether the
lower guard closes correctly. Do not use the saw
if the lower guard does not move freely or close
immediately. Never clamp or secure the lower
guard in an open position. If the saw is dropped
or accidentally falls to the ground, the lower
guard may become bent. Open the guard using
the retraction lever and make sure that the guard
can move freely and does not make contact with
the saw blade or other components at every cut-
ting angle and depth.
b. Check the function of the springs for the lower
guard. If the lower guard or springs show any
signs of a defect, have the saw serviced before
using it again. Damaged parts, sticky deposits or
accumulated chips may result in delayed opera-
tion of the lower guard.
c. Open the lower guard by hand only for special
cuts, such as plunge cuts and angled cuts. Open
the lower guard using the retractor lever and
release it as soon as the saw blade plunges into
the workpiece. The lower guard should work au-
tomatically for all other sawing work.
d. Make sure the lower guard is covering the saw
blade before placing the saw on a worktop or on