Makita DGA417 Manual De Instrucciones página 21

Installing dust collecting wheel
guard for grinding
Only for model DGA467 / DGA468 / DGA517 /
DGA518
Optional accessory
With optional accessories, you can use this tool for
planing concrete surface.
CAUTION:
Dust collecting wheel guard for
grinding is only for use in planing concrete sur-
face with a cup-type diamond wheel. Do not use
this guard with any other cutting accessory or for
any other purpose.
CAUTION:
Before operation, make sure that
a vacuum cleaner is connected to the tool and
turned on.
Place the tool upside down and install the dust collect-
ing wheel guard.
Mount the inner flange onto the spindle.
Fit the cup-type diamond wheel on the inner flange and
tighten the lock nut onto the spindle.
► Fig.30: 1. Lock nut 2. Cup-type diamond wheel
3. Hubbed cup-type diamond wheel 4. Inner
flange 5. Dust collecting wheel guard
6. Bearing box
NOTE: For information how to install the dust col-
lecting wheel guard, refer to the manual of the dust
collecting wheel guard.
Installing dust collecting wheel
guard for cutting-off
Optional accessory
With optional accessories, you can use this tool for
cutting stone materials.
► Fig.31
NOTE: For information how to install the dust col-
lecting wheel guard, refer to the manual of the dust
collecting wheel guard.
Connecting a vacuum cleaner
Optional accessory
WARNING:
Never vacuum metal particles
created by grinding/cutting/sanding operation.
Metal particles created by such operation are so hot
that they ignite dust and the filter inside the vacuum
cleaner.
To avoid dusty environment caused by masonry cut-
ting, use a dust collecting wheel guard and a vacuum
cleaner.
Refer to the instruction manual attached to the dust
collecting wheel guard for assembling and using it.
► Fig.32: 1. Dust collecting wheel guard 2. Hose of
the vacuum cleaner
OPERATION
WARNING:
force the tool. The weight of the tool applies ade-
quate pressure. Forcing and excessive pressure
could cause dangerous wheel breakage.
WARNING:
dropped while grinding.
WARNING:
wheel.
WARNING:
the wheel, especially when working corners,
sharp edges etc. This can cause loss of control and
kickback.
WARNING:
blades and other saw blades. 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.
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.33
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.
Usage example: operation with cup-type diamond
wheel
► Fig.34
Keep the tool horizontally and apply the entire cup-type
diamond wheel to the workpiece surface.
21 ENGLISH
It should never be necessary to
ALWAYS replace wheel if tool is
NEVER hit the workpiece with the
Avoid bouncing and snagging
NEVER use tool with wood cutting