Bosch 1821 Instrucciones De Funcionamiento Y Seguridad página 16

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BM 1609929Y07 10-10:BM 1609929Y07 10-10 1/18/11 10:06 AM Page 16
Wire brushes are intended to "clean" structural
steel, castings, sheet metal, stone and
concrete. They are used to remove rust, scale
and paint.
Avoid bouncing and snagging
WARNING
the wire brush, especially
when working corners, sharp edges etc. This
can cause loss of control and kick-back.
Be aware that wire bristles
WARNING
are thrown by the brush
even during ordinary operation. Do not
overstress the wires by applying excessive
load to the brush. The wire bristles can easily
penetrate light clothing and/or skin.
CORRECT:
Wire tips doing
the work.
CORRECT:
Wire tips doing
the work.
Preventive maintenance
WARNING
performed by unauth-orized
personnel may result in misplacing of
internal wires and components which could
cause serious hazard. We recommend that
all tool service be performed by a Bosch
Factory Service Center or Authorized Bosch
Service Station.
TOOL LUBRICATION
Your Bosch tool has been properly lubricated
and is ready to use. It is recommended that
tools with gears be regreased with a special
gear lubricant at every brush change.
Wire Brush Operations
WIRE WHEEL BRUSH
WIRE CUP BRUSH
Maintenance
Service
BRUSHING PRESSURE
1. Remember, the tips of a wire brush do the
work. Operate the brush with the lightest
pressure so only the tips of the wire come in
contact with the work.
2. If heavier pressures are used, the wires
will be overstressed, resulting in a wiping
action; and if this is continued, the life of the
brush will be shortened due to wire fatigue.
3. Apply the brush to the work in such a way
that as much of the brush face as possible is
in full contact with the work. Applying the side
or edge of the brush to the work will result in
wire breakage and shortened brush life.
INCORRECT:
Excessive
pressure can
cause wire
breakage.
INCORRECT:
Excessive
pressure can
cause wire
breakage.
CARBON BRUSHES
The brushes and commutator in your tool have
been engineered for many hours of
dependable service. To maintain peak
efficiency of the motor, we recommend every
two to six months the brushes be examined.
Only genuine Bosch replacement brushes
specially designed for your tool should be used.
BEARINGS
After about 300-400 hours of operation, or at
every second brush change, the bearings
should be replaced at Bosch Factory Service
Center or Authorized Bosch Service Station.
Bearings which become noisy (due to heavy
load or very abrasive material cutting) should
be replaced at once to avoid overheating or
motor failure.
-16-

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1821d

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