Grinding operation – Panasonic EY4640 User Manual
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Grinding operation
ALWAYS hold the tool firmly with one
hand on grip and the other on the side
handle. Turn on the tool on and then
apply the wheel or disc to the work-
piece.
In general, keep the edge of the
wheel or grinding disc at an angle of
about 15 degrees to the workpiece
surface.
When using a new grinding disc, do
not work the grinder in the B direction
or it will cut into the workpiece. Once
the edge of the grinding disc has been
rounded off by use, the grinding disc
may be worked in both A and B direc-
tion.
Using a cut-off disc guard
(EY9X213E) (Available as an
accessory, not included)
WARNING:
• When using an abrasive cut-off
disc, be sure to use only the cut-off
disc guard designed for this use
with cut-off disc.
• NEVER use cut-off disc for grinding.
• Do not jam the Disc or apply ex-
cessive pressure. Do not attempt
to make an excessive depth of cut.
Overstressing the cut-off disc in-
creases the loading and suscepti-
bility to twisting or binding of the
cut-off disc in the cut and the pos-
sibility of kickback, cut-off disc
breakage and overheating of the
motor may occur.
• Do not start when disc is in the
workpiece. To do so causes the
cut-off disc binding or kickback. Let
the cut-off disc reach full speed and
then carefully cut the workpiece.
• During cutting operations, never
change the angle of the disc. Plac-
ing side pressure on the cut-off
disc (as in grinding) will cause the
disc to crack and break, causing
serious personal injury.
CAUTION:
• To prevent excessive temperature
increase of the tool surface, do not
operate the tool continuously us-
ing two or more battery packs. The
tool needs cool-off time before
switching to another pack.
• Do not close up ventilation slots on
the sides of the body during opera-
tion. Otherwise, the machine func-
tion is adversely affected to cause a
failure.
• Do NOT strain the tool (motor). This
may cause damage to the unit.
• Use the tool in such a way as to
prevent the air from the ventilation
slots from blowing directly onto
your skin. Otherwise, you may get
burned.
Make sure the side.
A
B