Makita BGA450 Manuel D'instruction page 7

WARNING:
Always use supplied guard when flex wheel is on
•
tool. Wheel can shatter during use and guard helps
to reduce chances of personal injury.
Follow instructions for depressed center grinding
wheel/Multi-disc but also use plastic pad over wheel. See
order of assembly on accessories page in this manual.
Installing or removing abrasive disc (optional
accessory)
007240
NOTE:
Use sander accessories specified in this manual.
•
These must be purchased separately.
Mount the rubber pad onto the spindle. Fit the disc on the
rubber pad and screw the lock nut onto the spindle. To
tighten the lock nut, press the shaft lock firmly so that the
spindle cannot revolve, then use the lock nut wrench and
securely tighten clockwise.
To remove the disc, follow the installation procedure in
reverse.
OPERATION
WARNING:
It should never be necessary to force the tool. The
•
weight of the tool applies adequate pressure.
Forcing and excessive pressure could cause
dangerous wheel breakage.
ALWAYS replace wheel if tool is dropped while
•
grinding.
NEVER bang or hit grinding disc or wheel onto
•
work.
Avoid bouncing and snagging the wheel, especially
•
when working corners, sharp edges etc. This can
cause loss of control and kickback.
NEVER use tool with wood cutting blades and other
•
sawblades. Such blades when used on a grinder
frequently kick and cause loss of control leading to
personal injury.
CAUTION:
Make the depth of a single cut up to 5 mm. Adjust
•
pressure on the tool so that the tool does not slow
down during the operation.
1. Lock nut
1
2. Abrasive disc
2
3. Rubber pad
3
After operation, always switch off the tool and wait
•
until the wheel has come to a complete stop before
putting the tool down.
If the tool is operated continuously until the battery
•
cartridge has discharged, allow the tool to rest for
15 minutes before proceeding with a fresh battery.
Grinding and sanding operation
A
B
007221
ALWAYS hold the tool firmly with one hand on housing
and the other on the side handle. 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 degrees to the workpiece surface.
During the break-in period with a new wheel, do not work
the grinder in the B direction or it will cut into the
workpiece. Once the edge of the wheel has been
rounded off by use, the wheel may be worked in both A
and B direction.
Operation with diamond wheel (optional
accessory )
CAUTION:
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.
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.
A diamond wheel shall be operated perpendicular
•
to the material being cut.
7