Bedienungsanleitung Makita GA9020R (Seite 9 von 68) (Deutsch, Englisch, Holländisch, Dänisch, Französisch, Italienisch, Portugiesisch, Spanisch)

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Installing or removing cut-off wheel

For Australia and New Zealand (Fig. 13)

Mount the inner flange onto the spindle. Fit the cut-off

wheel on over the inner flange.

Mount the outer flange on the wheel and screw the lock

nut with its protrusion facing downward (facing toward the

wheel).

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.

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:

• Never switch on the tool when it is in contact with 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 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.

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.

(Fig. 15)

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.

Replacing carbon brushes (Fig. 16)

When the resin insulating tip inside the carbon brush is

exposed to contact the commutator, it will automatically

shut off the motor. When this occurs, both carbon brushes

should be replaced. Keep the carbon brushes clean and

free to slip in the holders. Both carbon brushes should be

replaced at the same time. Use only identical carbon

brushes. (Fig. 17)

Use a screwdriver to remove the brush holder caps. Take

out the worn carbon brushes, insert the new ones and

secure the brush holder caps.

To maintain product SAFETY and RELIABILITY, repairs,

any other maintenance or adjustment should be

performed by Makita Authorized Service Centers, always

using Makita replacement parts.

ACCESSORIES

CAUTION:

• These accessories or attachments are recommended

for use with your Makita tool specified in this manual.

The use of any other accessories or attachments might

present a risk of injury to persons. Only use accessory

or attachment for its stated purpose.

If you need any assistance for more details regarding

these accessories, ask your local Makita Service Center.

• Wheel guard (Wheel cover)

• Inner flange

• Depressed center wheels

• Lock nut (For depressed center wheel)

• Rubber pad

• Abrasive discs

• Lock nut (For abrasive disc)

• Lock nut wrench

• Cut-off wheels

• Inner flange (For cut-off wheel)

• Outer flange (For cut-off wheel)

• Wire cup brush

• Side grip

• Dust collecting wheel guard

For Model GA7020R

Noise

ENG102-3

The typical A-weighted noise level determined according

to EN60745:

Sound pressure level (L

): 90 dB (A)

Sound power level (L

): 101 dB (A)

Uncertainty (K): 3 dB (A)

Wear ear protection.

Vibration

ENG208-4

The vibration total value (tri-axial vector sum) determined

according to EN60745:

Work mode: surface grinding

Vibration emission (a

h,AG

): 8.0 m/s

Uncertainty (K): 1.5 m/s

If the tool is used for other applications, the vibration

values may be different.

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