DeWalt D28474 Guide D'utilisation page 15

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 setting it down.
MOUNTING AND USING SANDING
BACKING PADS
Sanding pads and sanding discs must be rated above minimum
accessory speed as shown on tool. Recommended sanding
backing pads and sanding discs are available at extra cost from
D WALT service centers and D
E E
NOTE: Guard may be removed for sanding applications with
backing pads and sanding discs. Sanding flap discs are considered
grinding wheels by ANSI standards and require the use of a guard.
(See Mounting and Using Depressed Center Grinding Wheels and
Sanding Flap Discs).
MOUNTING SANDING BACKING PADS
Turn off and unplug tool before making any adjustments or
removing or installing accessories. Before reconnecting the
tool, depress and release the trigger switch to ensure that the
tool is off.
CAUTION: Proper guard must be re-
installed for grinding wheel, sanding flap disc,
wire brush, or wire wheel applications after
sanding applications are complete.
1. Place or appropriately thread rubber back-
ing pad (L) down to soft mount.
2. Place the sanding disc (M) on the rubber
backing pad (L).
3. While depressing spindle lock, thread
clamp nut (N) on spindle, piloting the
WALT dealers.
N
M
raised hub on the clamp nut into the center of sanding disc and
backing pad.
4. Tighten the clamp nut with the proper wrench.
5. To remove the wheel, reverse the above procedure.
USING SANDING BACKING PADS
Choose the proper grit sandpaper for your application. Sandpaper
is available in various grits. Coarse grits yield faster material
removal rates and a rougher finish. Finer grits yield slower materi-
al removal and a smoother finish.
Begin with coarser grit discs for fast, rough material removal. Move
to a medium grit paper and finish with a fine grit disc for optimal
finish.
Coarse
Medium
Fine Finishing
Very Fine Finishing
1. Allow the tool to reach full speed before touching tool to work
surface.
2. Apply minimum pressure to work surface, allowing tool to oper-
ate at high speed.
3. Maintain a 5˚ to 15˚ angle between the
tool and work surface. The sanding
disc should contact approximately one
inch of work surface.
4. Move the tool constantly in a straight line to prevent burning
and swirling of work surface. Allowing the tool to rest on the
work surface without moving, or moving the tool in a circular
motion causes burning and swirling marks on the work surface.
5. Remove the tool from the work surface before turning the tool
off. Allow the tool to stop rotating before setting it down.
L
12
16 – 30 grit
36 – 80 grit
100 – 120 grit
150 – 180 grit
5˚-15˚