DeWalt D28490 Manual De Instrucciones página 34

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
service centers and D WALT dealers.
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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 (FIG. 7)
WARNING: To reduce the risk of serious personal injury,
turn tool off and disconnect tool from power source before
making any adjustments or removing/installing attachments
or accessories. Before reconnecting the tool, depress and
release the trigger switch to ensure that the tool is off. An
accidental start-up can cause injury.
CAUTION: Proper guard must be
reinstalled 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 (J) on the rubber
backing pad (I).
3. While depressing spindle lock, thread
clamp nut on spindle, piloting the 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 material removal and
a smoother finish. Begin with coarser grit discs for fast, rough material
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removal. Move to a medium grit paper and finish with a fine grit disc
for optimal finish.
1. Allow the tool to reach full speed before touching tool to work
surface.
2. Apply minimum pressure to work surface, allowing tool to operate
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
FIG. 7
swirling of work surface. Allowing the tool to rest on the work
surface without moving, or moving the tool in a circular motion
J
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.
Mounting and Using Wire Brushes and
Wire Wheels
WARNING: To reduce the risk of serious personal injury,
turn tool off and disconnect tool from power source before
I
making any adjustments or removing/installing attachments
or accessories. Before reconnecting the tool, depress and
release the trigger switch to ensure that the tool is off. An
accidental start-up can cause injury.
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Coarse 16 ­ 30 grit
Medium 36 ­ 80 grit
Fine Finishing 100 ­ 120 grit
Very Fine Finishing 150 – 180 grit