HART HPMT01 Operator's Manual page 7

OPERATION
NOTICE:
Do not force. Use only enough pressure to keep the
saw cutting. Let the blade and saw do the work. Use
of excessive pressure will cause strong vibrations to
the tool, which may result in broken blades and cause
premature wear to the tool's motor.
SANDPAPER SELECTION
Selecting the correct size grit and type sandpaper is an
extremely important step in achieving a high quality sanded
finish. Aluminum oxide, silicon carbide, and other synthetic
abrasives are best for power sanding. Natural abrasives,
such as flint and garnet are too soft for economical use in
power sanding.
In general, coarse grit will remove the most material and finer
grit will produce the best finish in all sanding operations.
The condition of the surface to be sanded will determine
which grit will do the job. If the surface is rough, start with a
coarse grit and sand until the surface is uniform. Medium grit
may then be used to remove scratches left by the coarser
grit and finer grit used for finishing of the surface. Always
continue sanding with each grit until surface is uniform.
MAINTENANCE
WARNING:
When servicing, use only identical replacement parts.
Use of any other part could create a hazard or cause
product damage.
NOTE: ILLUSTRATIONS START ON PAGE 9
AFTER FRENCH AND SPANISH LANGUAGE SECTIONS.
DETAIL SANDING
See Figure 6, page 9.
Hold sander in front of and away from you, keeping it clear
of the workpiece. Start sander and let the motor build to
its maximum speed, then gradually lower on the work with
a slight forward movement. Move the sander slowly over
workpiece using forward and backward or side to side
strokes. Upon completion of sanding operation, always
remove sander from workpiece before turning it off.
Do no t fo rce. The weight of the unit supplies adequate pres-
sure, so let the sandpaper and sander do the work. Applying
additional pressure only slows the motor, rapidly wears
sandpaper, and greatly reduces sander speed. Excessive
pressure will overload the motor causing possible damage
from motor overheating and can result in inferior work. Any
finish or resin on wood may soften from the frictional heat.
Do not allow sanding on one spot too long, as the sander's
rapid action may remove too much material, making the
surface uneven.
GENERAL MAINTENANCE
Avoid using solvents when cleaning plastic parts. Most
plastics are susceptible to damage from various types of
commercial solvents and can be damaged by their use. Use
clean cloths to remove dirt, dust, oil, grease, etc.
7 – English