Maintenance - Bosch 1294VSK Operating/Safety Instructions Manual

BM 2609931769 07-11:BM 2609931769 07-11.qxp 7/13/11 8:42 AM Page 10
Grit Application
Coarse For rough wood or metal
sanding, and rust or old
finish removal.
Medium For general wood or metal
sanding
Fine For final finishing of wood,
metal, plaster and other
surfaces.
Extra fine For final sanding of bare
wood, smoothing old paint,
or preparing a finished
surface for recoating.
With the workpiece firmly secured, turn tool
on as described above. Contact the work
with the tool after the sander has reached its
full speed, and remove it from the work
before switching the tool off. Operating your
sander in this manner will prolong switch and
motor life, and greatly increase the quality of
your work.
Move the sander in long steady strokes
parallel to the grain using some lateral
motion to overlap the strokes by as much as
75%. DO NOT apply excessive pressure -
let the tool do the work. Excessive pressure
will result in poor handling, vibration, and
unwanted sanding marks.
Preventive maintenance
WARNING
performed by unauthorized
personnel may result in misplacing of
internal wires and components which
could cause
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 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

Maintenance

Service
serious hazard.
If the surface is rough, begin with coarser
grits and then complete the surfacing with
medium and fine abrasives. To avoid
uneven results, do not skip more than one
grit size when going from coarser to finer,
and do not sand in one area for too long.
When the job is completed, gently lift the tool
from the work surface and slide switch to the
"OFF" position.
POLISHING: Your Bosch corner/detail
sander may be fitted with optional abrasive
mesh or polishing pads to polish or remove
scratches or corrosion from metal, painted,
or other surfaces. The tool is operated in
much the same way as when sanding, but
the following points should be observed;
Use light pressure and a circular or
overlapping motion to remove scratches and
corrosion or polish a surface. If using a
compound, use only as much as necessary
and do not use the dust extraction feature.
When working in very confined areas or
louvered panels, the optional pad extension
plate should be fitted.
Clean the buffing or mesh pads with mild
detergents and warm water. DO NOT use
solvents.
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.
We
WARNING
the power supply before cleaning or
performing any maintenance. The tool may
be cleaned most effectively with compressed
dry air. Always wear safety goggles when
cleaning tools with compressed 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 openings.
CAUTION
plastic parts. Some of these are: gasoline,
carbon tetrachloride, chlorinated cleaning
solvents, ammonia
detergents that contain ammonia.
-10-
Cleaning
To avoid accidents always
disconnect the tool from
Certain cleaning agents
and solvents damage
and household