DeWalt XR LI-ION DCG412 Manual Del Usuario página 65

NOTE: This tool has no provision to lock the switch in
the ON position, and should never be locked ON by
any other means.
WARNING: Hold the side handle and
body of the tool firmly to maintain
control of the tool at start up and during
use and until the wheel or accessory
stops rotating. Make sure the wheel has
come to a complete stop be fore laying
the tool down.
WARNING: Allow the tool to reach full
speed before touching tool to the work
surface. Lift the tool from the work
surface before turning the tool off.
Spindle Lock (fi g. 1)
The spindle lock (c) is provided to prevent the
spindle from rotating when installing or removing
wheels. Operate the spindle lock only when the tool
is turned off, unplugged from the power supply, and
has come to a complete stop.
NOTICE: To reduce the risk of damage
to the tool, do not engage the spindle
lock while the tool is operating. Damage
to the tool will result and attached
accessory may spin off possibly
resulting in injury.
To engage the lock, depress the spindle lock button
(c) and rotate the spindle until you are unable to
rotate the spindle further.
Using Depressed Centre Grinding
Wheels
SURFACE GRINDING WITH GRINDING WHEELS
1. Allow the tool to reach full speed before
touching the tool to the work surface.
2. Apply minimum pressure to the work surface,
allowing the tool to operate at high speed.
Grinding rate is greatest when the tool operates
at high speed.
3. Maintain a 20° to 30° angle between the tool
and work surface.
4. Continuously move the tool in a forward and
back motion to avoid creating gouges in the
work surface.
5. Remove the tool from work surface before
turning tool off. Allow the tool to stop rotating
before laying it down.
EDGE GRINDING WITH GRINDING WHEELS
WARNING: Wheels used for cutting
and edge grinding may break or
kickback if they bend or twist while the
tool is being used to do cut-off work
or deep grinding. To reduce the risk
of serious injury, limit the use of these
wheels with a standard Type 27 guard
to shallow cutting and notching (less
than 13 mm [1/2"] in depth). The open
side of the guard must be positioned
away from the operator. For deeper
cutting with a Type 1 cut-off wheel, use
a closed Type 1 guard. Please refer to
the Grinding and Cutting Accessory
Chart at the end of this section to see
other accessories that can be used with
these grinders.
1. Allow the tool to reach full speed before
touching the tool to the work surface.
2. Apply minimum pressure to the work surface,
allowing the tool to operate at high speed.
Grinding rate is greatest when the tool operates
at high speed.
3. Position yourself so that the open-underside of
the wheel is facing away from you.
4. Once a cut is begun and a notch is established
in the workpiece, do not change the angle
of the cut. Changing the angle will cause the
wheel to bend and may cause wheel breakage.
Edge grinding wheels are not designed to
withstand side pressures caused by bending.
5. Remove the tool from the work surface before
turning the tool off. Allow the tool to stop
rotating before laying it down.
WARNING: Do not use edge grinding/
cutting wheels for surface grinding
applications because these wheels
are not designed for side pressures
encountered with surface grinding.
Wheel breakage and serious personal
injury may result.
Mounting and Using Wire Brushes
and Wire Wheels
Wire wheels and brushes can be used for removing
rust, scale and paint, and for smoothing irregular
surfaces.
NOTE: Please refer to Precautions To Take When
Wire Brushing Paint.
1. Allow the tool to reach full speed before
touching the tool to the work surface.
2. Apply minimum pressure to work surface,
allowing the tool to operate at high speed.
Material removal rate is greatest when the tool
operates at high speed.
ENGLISH
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