DeWalt D28490 Instruction Manual page 12

1. Allow the tool to reach full speed before touching the tool to the
work surface.
2. Apply minimum pressure to work surface, to allow the tool to
operate at high speed.
3. Protect yourself during edge finishing by directing the open side
of the guard away from you.
4. Move the tool continuously in a forward and back motion to
avoid creating gouges in the work surface.
5. Remove tool from work surface before turning the tool off. Allow
the tool to stop rotating before setting it down.
WARNING: Do not use edge grinding wheels for surface grinding
applications because edge grinding wheels are not designed for
side pressures encountered with surface grinding. Wheel breakage
and injury may result.
SURFACE FINISHING WITH SANDING FLAP DISCS
1. Allow the tool to reach full speed before touching tool to work
surface.
2. Apply minimum pressure to work surface, to allow the tool to
operate at high speed.
3. Maintain a 5˚ to 10˚ 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 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
WALT dealers.
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
WARNING: 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
backing pad (I) down to mount.
2. Place the sanding disc on the rubber
backing pad.
3. While depressing spindle lock, thread
clamp nut (J) on spindle, piloting the
raised hub on the clamp nut into the
center of san ding 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
re moval rates and a rougher finish. Finer grits yield slower material
removal and a smoother finish.
10
J
I