Operation - Makita GA7020R Bedienungsanleitung

the screw securely.
To remove wheel guard, follow the installation procedure
in reverse.
For tool with clamp lever type wheel guard
Fig.8
Fig.9
Loosen the lever on the wheel guard. Mount the wheel
guard with the protrusion on the wheel guard band
aligned with the notch on the bearing box. Then rotate
the wheel guard around to the position shown in the
figure. Tighten the lever to fasten the wheel guard. If the
lever is too tight or too loose to fasten the wheel guard,
loosen or tighten the nut to adjust the tightening of the
wheel guard band.
To remove wheel guard, follow the installation procedure
in reverse.
Installing or removing depressed center
grinding wheel/Multi-disc (accessory)
WARNING:
Always use supplied guard when depressed center
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grinding wheel/Multi-disc is on tool. Wheel can
shatter during use and guard helps to reduce
chances of personal injury.
Fig.10
Mount the inner flange onto the spindle. Fit the
wheel/disc on the inner flange and screw the lock nut
onto the spindle.
NOTE:
When using a more than 7 mm thick depressed center
grinding wheel, overturn the lock nut and screw it onto
the spindle.
Super flange
Models with the letter F are standard-equipped with a
super flange. Only 1/3 of efforts needed to undo lock nut,
compared with conventional type.
For Australia and New Zealand
Fig.11
Mount the inner flange onto the spindle. Fit the
wheel/disc on the inner flange and screw the lock nut
with its protrusion facing downward (facing toward the
wheel).
Fig.12
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 wheel, follow the installation procedure in
reverse.
Installing or removing abrasive disc (optional
accessory)
NOTE:
Use sander accessories specified in this manual.
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These must be purchased separately.
Fig.13
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
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weight of the tool applies adequate pressure.
Forcing and excessive pressure could cause
dangerous wheel breakage.
ALWAYS replace wheel if tool is dropped while
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grinding.
NEVER bang or hit grinding disc or wheel onto
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work.
Avoid bouncing and snagging the wheel, especially
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when working corners, sharp edges etc. This can
cause loss of control and kickback.
NEVER use tool with wood cutting blades and other
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sawblades. Such blades when used on a grinder
frequently kick and cause loss of control leading to
personal injury.
CAUTION:
Never switch on the tool when it is in contact with
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the workpiece, it may cause an injury to operator.
Always wear safety goggles or a face shield during
•
operation.
After operation, always switch off the tool and wait
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until the wheel has come to a complete stop before
putting the tool down.
Grinding and sanding operation
Fig.14
ALWAYS hold the tool firmly with one hand on rear
handle 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 wire cup brush (optional
accessory)
CAUTION:
Check operation of brush by running tool with no
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load, insuring that no one is in front of or in line with
brush.
Do not use brush that is damaged, or which is out of
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balance. Use of damaged brush could increase
10