Kickback And Related Warnings - Bosch PWS 700-115 Manual Original

OBJ_BUCH-393-003.book Page 21 Thursday, February 14, 2008 3:56 PM
Do not use a damaged accessory. Before
each use, inspect the accessory such as
abrasive wheels for chips and cracks, back-
ing pads for cracks, tears or excess wear,
wire brushes for loose or cracked wires. If
power tool or accessory is dropped, inspect
for damage or install an undamaged acces-
sory. After inspecting and installing an ac-
cessory, position yourself and bystanders
away from the plane of the rotating acces-
sory and run the power tool at maximum
no-load speed for one minute. Damaged ac-
cessories will normally break apart during
this test time.
Wear personal protective equipment. De-
pending on application, use face shield,
safety goggles or safety glasses. As appro-
priate, wear dust mask, hearing protectors,
gloves and workshop apron capable of stop-
ping small abrasive or workpiece frag-
ments. The eye protection must be capable
of stopping flying debris generated by vari-
ous operations. The dust mask or respirator
must be capable of filtrating particles gener-
ated by your operation. Prolonged exposure
to high intensity noise may cause hearing
loss.
Keep bystanders a safe distance away from
the work area. Anyone entering the work ar-
ea must wear personal protective equip-
ment. Fragments of workpiece or of a broken
accessory may fly away and cause injury be-
yond immediate area of operation.
Hold the power tool only by the insulated
gripping surfaces when performing an oper-
ation where the cutting accessory may con-
tact 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.
Position the cord clear of the spinning ac-
cessory. If you lose control of the power tool,
the cord may be cut or snagged and your
hand or arm may be pulled into the spinning
accessory.
Bosch Power Tools
Never lay the power tool down until the ac-
cessory has come to a complete stop. The
spinning accessory may grab the surface and
pull the power tool out of your control.
Do not run the power tool while carrying it
at your side. Accidental contact with the
spinning accessory could snag your clothing,
pulling the accessory into your body.
Regularly clean the power tool's air vents.
The motor's fan will draw the dust inside the
housing and excessive accumulation of pow-
dered metal may cause electrical hazards.
Do not operate the power tool near flamma-
ble materials. Sparks could ignite these ma-
terials.
Do not use accessories that require liquid
coolants. Using water or other liquid cool-
ants may result in electrocution or shock.

Kickback and related warnings

Kickback is a sudden reaction to a pinched or
snagged rotating wheel, backing pad, brush
or any other accessory. Pinching or snagging
causes rapid stalling of the rotating accesso-
ry which in turn causes the uncontrolled
power tool to be forced in the direction op-
posite of the accessory's rotation at the
point of the binding.
For example, if an abrasive wheel is snagged
or pinched by the workpiece, the edge of the
wheel that is entering into the pinch point
can dig into the surface of the material caus-
ing the wheel to climb out or kick out. The
wheel may either jump toward or away from
the operator, depending on direction of the
wheel's movement at the point of pinching.
Abrasive wheels may also break under these
conditions.
Kickback is the result of power tool misuse
and/or incorrect operating procedures or
conditions and can be avoided by taking
proper precautions as given below.
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