Service
Preventive maintenance
performed by unauth-
orized per so n nel 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 Autho -
rized 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.
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 brush es be examined.
Only genuine Bosch replace ment brushes
specially designed for your tool should be
used.
BEARINGS
Bearings which become noisy (due to heavy
load or very abrasive material cut ting) should
be replaced at once to avoid overheating or
motor failure.
Cleaning
To avoid accidents always
dis connect the tool from
the power supply before cleaning or
performing any main tenance.
The tool may
be cleaned most effectively with compressed
dry air.
Always wear safety gog gles when
cleaning tools with compressed air.
Ventilation openings and switch levers must
be kept clean and free of foreign matter. Do
not at tempt to clean by inserting pointed
objects through openings.
Certain cleaning agents
and sol vents damage
plastic parts.
Some of these are: gasoline,
carbon tetrachlo ride, chlo rinated cleaning
solvents, ammonia and house hold
detergents that contain ammonia.
Accessory storage & maintenance
Store accessories in a cool dry place and
avoid freezing. Before use check accessory for
cracks and fractures, do not use if damage is
suspected.
!
WARNING
!
WARNING
Maintenance
!
CAUTION
-10-
PADDLE SWITCH WITH
"LOCK-OFF"FEATURE
(Model DG300LPD only)
The Paddle switch enables the operator to
control the switch functions of "Lock-OFF",
and "ON/OFF".
TO UNLOCK SWITCH AND TURN TOOL
"ON": Push "Lock-OFF" switch release lever
backward to unlock paddle switch, then
squeeze paddle switch (Fig. 1).
TOOL TIPS
Always hold the tool away from your face.
Accessories can be damaged during handling,
and can fly apart as they come up to speed.
This is not common, but it does happen.
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.
Practice on scrap materials first to see how the
tool performs. Keep in mind that the work is
done by the speed of the tool and by the
accessory in the collet. You should not lean on
or push the tool during use.
Instead, lower the spinning accessory lightly to
the work and allow it to touch the point at which
you want grinding to begin. Con centrate on
guiding the tool over the work using very little
pressure from your hand. Allow the accessory
to do the work.
Usually, it is best to make a series of passes
with the tool rather than attempt to do all the
work in one pass.
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