Bosch GSR12V-140FC Instrucciones De Funcionamiento Y Seguridad página 14

Drilling Wood
Be certain workpiece is clamped or anchored
firm ly. Always apply pressure in a straight line with
the drill bit. Maintain enough pressure to keep the
drill "biting" .
When drilling holes in wood, twist bits can be
used. Twist bits may overheat unless pulled out
frequently to clear chips from flutes.
Use a "back-up" block of wood for work that is
likely to splinter, such as thin materials.
You will drill a cleaner hole if you ease up on the
pressure just before the bit breaks through the
wood. Then complete the hole from the back side.
Service
NO USER SERVICEABLE
PARTS INSIDE. Preventive
maintenance performed by un au thorized per-
sonnel may result in misplacing of internal
wires and components which could cause se-
rious hazard. We recom mend that all tool ser-
vice be performed by a Bosch Factory Service
Center or Authorized Bosch Service Station.
SERVICE MEN: Disconnect tool and/or charger
from power source before servicing.
Batteries
Be alert for battery packs that are nearing
their end of life. If you notice decreased tool
performance or significantly shorter running time
between charges then it is time to replace the
battery pack. Failure to do so can cause the tool
to operate improperly or damage the charger.
Tool Lubrication
Your Bosch tool has been properly lubricated and
is ready for use.
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There are two rules for drilling hard materials.
First, the harder the material, the greater the
pres sure you need to apply to the tool. Second,
the harder the material, the slower the speed.
Here are a couple of tips for drilling in metal.
Lubri cate the tip of the bit occasionally with cut-
ting oil except when drilling soft metals such as
alu minum, cop per or cast iron. If the hole to be
drilled is fairly large, drill a smaller hole first, then
enlarge to the required size, it's often faster in the
long run. Main tain enough pressure to assure
that the bit does not just spin in the hole. This will
dull the bit and greatly shorten its life.
Maintenance
The motor in your tool has been engineered for
many hours of dependable service. To maintain
peak efficiency of the motor, we recommend it
be examined every six months. Only a genuine
Bosch replacement motor specially designed for
your tool should be used.
charger from the power supply before clean-
ing. The tool may be cleaned most effectively
with com pressed dry air. Always wear safety
goggles when cleaning tools with com-
pressed air.
Ventilation openings and switch levers must be
kept clean and free of foreign matter. Do not
attempt to clean by inserting pointed objects
through opening.
parts. Some of these are: gasoline, car bon tetra-
chloride, chlorinated cleaning solvents, ammonia
and household detergents that contain ammonia.
Drilling Metal
Motors
Cleaning
To avoid accidents, always
disconnect the tool and/or
Certain cleaning agents and
solvents damage plastic
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