DeWalt DC411 Guide D'utilisation page 20

Depressed center Type 27 grinding wheels must be used with
included flanges. See pages 14 and 15 of this manual for more
information.
1. Install the unthreaded backing flange (G)
on spindle (D) with the raised section
(pilot) against the wheel.
2. Place wheel against the backing flange,
centering the wheel on the raised section
(pilot) of the backing flange.
3. While depressing the spindle lock
button, thread the clamp nut (H) on
spindle. If the wheel you are installing is
more than 1/8" (3.17 mm) thick, place the
threaded clamp nut on the spindle so that
the raised section (pilot) fits into the cen-
ter of the wheel. If the wheel you are
installing is 1/8" (3.17 mm) thick or less,
place the threaded clamp nut on the
spindle so that the raised section (pilot) is
not against the wheel.
4. While depressing the spindle lock button,
tighten the clamp nut with a wrench.
5. To remove the wheel, depress the
spindle lock button and loosen the thread-
ed clamp nut with a wrench.
NOTE: If the wheel spins after the clamp
nut is tightened, check the orientation of the
threaded clamp nut. If a thin wheel is installed
with the pilot on the clamp nut against the
wheel, it will spin because the height of the
pilot prevents the clamp nut from holding the
wheel.
SURFACE GRINDING WITH GRINDING WHEELS
1. Allow the tool to reach full speed before touching the tool to the
work surface.
G
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.
D
4. Continuously
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
H
WARNING: Wheels used for cutting and edge grinding may
break or kick back if they bend or twist while the tool is being used
1/4" (6.35 mm)
to do cut-off work or deep grinding. To reduce the risk of serious
WHEELS
injury, limit the use of these wheels with a standard Type 27 guard
to shallow cutting and notching [less than
Clamp nut
1/2" (13 mm) 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
Backing flange
1 guard. See pages 14 and 15 for more
information.
1/8" (3.17 mm)
1. Allow the tool to reach full speed
WHEELS
before touching the tool to the work
surface.
Clamp nut
2. Apply minimum pressure to the work
surface, allowing the tool to oper-
ate at high speed. Grinding rate is
greatest when the tool operates at
Backing flange
high speed.
18
move the tool in
20˚-30˚