Stihl TS 440 Manual De Instrucciones página 16

English
Do not use abrasive cutting wheels for
rough grinding using the sides of the
wheel. Large bending stresses occur
during such work, which may result in
reactive forces, including kickback, or
cause the wheel to shatter or break,
resulting in serious or fatal injury.
WARNING
To reduce the risk of injury from
damaged abrasive cutting wheels:
1. Do not use a wheel on your machine
that has a rated operating speed
lower than the maximum operating
speed of you machine's spindle, as
specified in this instruction manual.
2. Do not use a wheel that has been
dropped or damaged.
3. Run each new wheel immediately
after installation for approximately
one minute at maximum speed
without cutting, making sure to keep
bystanders away. If the wheel
wobbles or otherwise shows
operational problems, do not use it.
4. Do not cut any material for which the
wheel is not authorized.
5. Do not grind using the sides of the
wheel.
6. Do not twist, thrust, knock or drop
the machine. This can cause
damage to the wheel.
7. Do not transport the cut-off machine
with the cutting wheel mounted.
To achieve a clean and efficient cut,
maintain a firm grip and apply the cutting
wheel to the workpiece, allowing the
cutting wheel to engage the material
naturally. Don't force or jam the cutting
14
wheel into the workpiece. When cutting
with the bottom of the abrasive wheel,
the machine will have a natural tendency
to move away from the operator. Slowly
pulling the machine back through the cut
or kerf toward the operator and then
allowing it to move forward again will
improve cutting performance.
Insert the wheel into the material only as
deep as necessary to make the cut. To
reduce the amount of dust created, do
not cut all the way through stone,
concrete and similar materials leave a
thin layer of material uncut. This layer
can be easily broken afterwards using a
hammer or other appropriate tool.
Always wear properly rated eye
protection when breaking any uncut
piece or layer. Do not cock, jam or
wedge the wheel in the cut, as this may
result in reactive forces or a damaged or
broken wheel and the possibility of
severe or fatal personal injury.
Release the pressure on the cut-off
machine as you reach the end of the cut.
Too much pressure may cause the
operator to lose control of the cut-off
machine when the abrasive cutting
wheel completes the cut. The abrasive
cutting wheel may contact the operator
or strike some foreign object and break
or shatter.
Always shut off the engine and be sure
the wheel has stopped rotating before
setting the cut-off machine down.
WARNING
When the engine is shut off, the wheel
brake will engage within a few seconds.
If the cut-off machine is on the ground, it
may tip forward when the wheel brake
engages. The abrasive cutting wheel
can touch the ground and may shatter,
break or sustain damage. It also may
cause damage to the surface it contacts.
STIHL Quickstop Wheel Brake System
The STIHL Quickstop wheel brake
system is designed to stop the rotation
of the cutting wheel during kickback if
the kickback energy is sufficiently high.
WARNING
The Quickstop does not prevent
kickback. It is designed to reduce the
risk of kickback injury, if activated, when
the guard on the TS 440 has been
"opened," exposing the top of the cutting
wheel. In order for the Quickstop to
reduce the risk of kickback injury, it must
be properly maintained and in good
working order. An improperly
maintained wheel brake may increase
the time needed to stop the abrasive
cutting wheel after activation, or it may
not activate at all. See the chapter
entitled "Wheel Brake System" in this
instruction manual.
WARNING
The brake is intended to substitute for
the wheel guard when the guard has
been "opened," i.e., pulled back toward
the operator, exposing the top of the
wheel, by stopping the rotation of the
wheel if kickback occurs and kickback
energies are sufficiently high. Like all
safety devices, the brake cannot protect
the operator in all circumstances. There
must be enough distance between the
top of the wheel and the operator to
ensure that the Quickstop has sufficient
time to activate and stop the abrasive
cutting wheel before potential contact
TS 440