Makita GA4030R Betriebsanleitung Seite 15

CAUTION:
Never switch on the tool when it
is in contact with the workpiece, it may cause an
injury to operator.
CAUTION:
Always wear safety goggles or a
face shield during operation.
CAUTION:
After operation, always switch off
the tool and wait until the wheel has come to a
complete stop before putting the tool down.
CAUTION:
ALWAYS hold the tool firmly with
one hand on housing and the other on the side
grip (handle).
NOTE: A dual purpose wheel can be used for both
grinding and cutting-off operations.
Refer to the "Grinding and sanding operation" for
grinding operation, and refer to the "Operation with
abrasive cut-off / diamond wheel" for cutting-off
operation.
Grinding and sanding operation
► Fig.27
Turn the tool on and then apply the wheel or disc to the workpiece.
In general, keep the edge of the wheel or disc at an
angle of about 15° to the workpiece surface.
During the break-in period with a new wheel, do not
work the grinder in forward direction or it may cut into
the workpiece. Once the edge of the wheel has been
rounded off by use, the wheel may be worked in both
forward and backward direction.
Operation with abrasive cut-off /
diamond wheel
Optional accessory
WARNING:
Do not "jam" the wheel or apply
excessive pressure. Do not attempt to make an
excessive depth of cut. Overstressing the wheel
increases the loading and susceptibility to twisting
or binding of the wheel in the cut and the possibility
of kickback, wheel breakage and overheating of the
motor may occur.
WARNING:
Do not start the cutting operation
in the workpiece. Let the wheel reach full speed
and carefully enter into the cut moving the tool
forward over the workpiece surface. The wheel
may bind, walk up or kickback if the power tool is
started in the workpiece.
WARNING:
During cutting operations, never
change the angle of the wheel. Placing side pres-
sure on the cut-off wheel (as in grinding) will cause
the wheel to crack and break, causing serious per-
sonal injury.
WARNING:
A diamond wheel shall be oper-
ated perpendicular to the material being cut.
Usage example: operation with abrasive cut-off
wheel
► Fig.28
Usage example: operation with diamond wheel
► Fig.29
Operation with wire cup brush
Optional accessory
CAUTION:
Check operation of brush by run-
ning tool with no load, insuring that no one is in
front of or in line with brush.
NOTICE:
Avoid applying too much pressure which
causes over bending of wires when using the wire
cup brush. It may lead to premature breakage.
Usage example: operation with wire cup brush
► Fig.30
Operation with wire wheel brush
Optional accessory
CAUTION:
Check operation of wire wheel brush
by running tool with no load, insuring that no one is
in front of or in line with the wire wheel brush.
NOTICE:
Avoid applying too much pressure
which causes over bending of wires when using
wire wheel brush. It may lead to premature breakage.
Usage example: operation with wire wheel brush
► Fig.31
Operation with hole cutter
Optional accessory
CAUTION:
Check operation of the hole cutter
by running the tool with no load, insuring that no
one is in front of the hole cutter.
NOTICE:
Do not tilt the tool during operation. It
may lead to premature breakage.
Usage example: operation with hole cutter
► Fig.32
MAINTENANCE
CAUTION:
Always be sure that the tool is
switched off and unplugged before attempting to
perform inspection or maintenance.
NOTICE:
Never use gasoline, benzine, thinner,
alcohol or the like. Discoloration, deformation or
cracks may result.
To maintain product SAFETY and RELIABILITY, repairs, carbon
brush inspection and replacement, any other maintenance or
adjustment should be performed by Makita Authorized or Factory
Service Centers, always using Makita replacement parts.
Air vent cleaning
The tool and its air vents have to be kept clean. Regularly clean the
tool's air vents or whenever the vents start to become obstructed.
► Fig.33: 1. Exhaust vent 2. Inhalation vent
15 ENGLISH