Bosch GWS18V-45 Instrucciones De Funcionamiento página 13

2610041372 09-15 GWS18V-45.qxp_GWS 9/18/15 10:00 AM Page 13
Hold the tool with both hands
while starting the tool, since
WARNING
torque from the motor can cause the tool to twist.
Start the tool before applying to work and let
the tool come to full speed before contacting
the workpiece. Lift the tool from the work
before releasing the switch. DO NOT turn the
switch "ON" and "OFF" while the tool is under
load; this will greatly decrease the switch life.
SLIDE ON-OFF SWITCH WITH LOCK
The tool is switched "ON" by the slide switch
located at the side of the motor housing. The
switch can be locked in the "ON" position, a
convenience for long grinding operations.
TO TURN THE TOOL "ON" without locking it,
move the switch forward by applying
pressure ONLY at the REAR portion of the
SELECTING GRINDING WHEELS
Before using a grinding wheel,
be certain that its maximum
WARNING
safe operating speed is not exceeded by the
nameplate speed of the grinder. Do not exceed
the recom mended wheel diameter.
DISC GRINDING WHEELS
Grinding wheels should be carefully selected in
order to use the grinder most efficiently. Wheels
vary in type of abrasive, bond, hardness, grit
size and structure. The correct type of wheel to
use is determined by the job. Use disc grinding
wheels for fast grinding of structural steel,
heavy weld beads, steel casting, stainless steel
and other ferrous metals.
GRINDING TIPS
Efficient grinding is achieved by controlling the
pressure and keep ing the angle between wheel
Do not use this grinder for
cutting masonry.
WARNING
CUTTING METAL
Using the optional Type 41/1A wheel guard,
it is possible to perform limited cutting on
small stock such as metal tubes, piping or
rebar. When cutting, work with moderate
feed, adapted to the material being cut. Do
not exert side pressure onto the cutting disc,
Operating Instructions
switch. When pressure is released the switch
will return to "OFF" position (Fig. 6).
TO LOCK THE SWITCH "ON", move the
switch forward and press the FRONT portion.
TO UNLOCK THE SWITCH, simply press
and release the REAR portion of the slider.
Switch is spring loaded and will snap back
automatically.
Grinding Operations
and workpiece at 10° to 15°. If the wheel is flat,
the tool is difficult to control. If the angle is too
steep, the pressure is concentrated on a small
area causing burning to the work surface.
slow grinding action and put dangerous
stresses on the wheel.
When grinding with a new wheel be certain to
grind while pulling tool backwards until wheel
becomes rounded on its edge. New wheels
have sharp corners which tend to "bite" or cut
into work piece when pushing forward.
Cutting Operations
tilt or oscillate the tool. When cutting profiles
and square bar, it is best to start at the
smallest cross section.
Always follow precautions for kickback.
Do not apply side pressure to cutting wheel
to reduce wheel speed.
The tool should always be used so that
sparks are directed away from user.
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Excessive
pressure on the wheel will
WARNING
FIG. 6
SLIDE
SWITCH
or sudden