Makita DGA411 Manual De Instrucciones página 24

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:
When using an abrasive cut-off /
diamond wheel, be sure to use only the special
wheel guard designed for use with cut-off wheels.
(In some European countries, when using a diamond
wheel, the ordinary guard can be used. Follow the
regulations in your country.)
WARNING:
NEVER use cut-off wheel for side
grinding.
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
pressure on the cut-off wheel (as in grinding) will
cause the wheel to crack and break, causing serious
personal injury.
WARNING:
A diamond wheel shall be
operated perpendicular to the material being cut.
► Fig.19:
1. Lock nut 2. Abrasive cut-off wheel /
diamond wheel 3. Inner flange 4. Wheel
guard for abrasive cut-off wheel / diamond
wheel
As for the installation, follow the instructions for
depressed center wheel.
The direction for mounting the lock nut and the
inner flange varies by wheel type and thickness.
Refer to the following figures.
For 100 mm (4") model
When installing the abrasive cut-off wheel:
► Fig.20:
1. Lock nut 2. Abrasive cut-off wheel
(Thinner than 4mm (5/32")) 3. Abrasive
cutoff wheel (4mm (5/32") or thicker) 4.
Inner flange
When installing the diamond wheel:
► Fig.21:
1. Lock nut 2. Diamond wheel (Thinner than
4mm (5/32")) 3. Diamond wheel (4mm
(5/32") or thicker) 4. Inner flange
For 115 mm (4 - 1/2") / 125 mm (5")
model
When installing the abrasive cut-off wheel:
► Fig.22:
1. Lock nut 2. Abrasive cut-off wheel
(Thinner than 4mm (5/32")) 3. Abrasive
cutoff wheel (4mm (5/32") or thicker) 4.
Inner flange
When installing the diamond wheel:
► Fig.23:
1. Lock nut 2. Diamond wheel (Thinner than
4mm (5/32")) 3. Diamond wheel (4mm
(5/32") or thicker) 4. Inner flange
Operation with wire cup brush
Optional accessory
CAUTION:
Check operation of brush by
running tool with no load, insuring that no one is
in front of or in line with brush.
CAUTION:
Do not use brush that is damaged,
or which is out of balance. Use of damaged brush
could increase potential for injury from contact with
broken brush wires.
► Fig.24:
1. Wire cup brush
Remove the battery cartridge from the tool and place it
upside down allowing easy access to spindle. Remove
any accessories on spindle. Thread wire cup brush
onto spindle and tighten with supplied wrench.
NOTICE:
Avoid applying too much pressure which
causes over bending of wires when using brush. It
may lead to premature breakage.
24 ENGLISH