DeWalt XR Li-Ion DCG412-XE Instruction Manual page 19

WARNING: Proper guard must be reinstalled for grinding wheel, cutting wheel,
sanding flap disc, wire brush or wire wheel applications after sanding applications are
complete.
1. Place or appropriately thread backing pad (Q)
on the spindle.
2. Place the sanding disc (R) on the backing pad
(Q).
3. While depressing the spindle lock button,thread
clamp nut (S) 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 by hand. Then depress
the spindle lock button while turning the
sanding disc until the sanding disc and clamp
nut are snug.
5. To remove the wheel, grasp and turn the
backing pad and sanding disc while depressing
the spindle lock button.
USING SANDING BACKING PADS
Choose the proper grit sanding discs for your application. Sanding discs are 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 coarse grit discs for fast, rough material removal. Move to a medium grit
paper and finish with a fine grit disc for optimal finish.
Coarse 16–30 grit
Medium 36–80 grit
Fine Finishing 100–120 grit
Very Fine Finishing 150–180 grit
1. Allow the tool to reach full speed before touching tool to the work surface.
2. Apply minimum pressure to work surface, allowing the tool to operate at high
speed. Sanding rate is greatest when the tool operates at high speed.
3. Maintain a 5° to 15° angle between the tool and
work surface. The san ding disc should contact
approximately 25.4 mm (1") of work surface
(Fig 15).
FIG. 14
4. Move the tool constantly in a straight line to
R
prevent burning and swirling of work surface.
S
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 work surface before turning tool off. Allow the tool to stop
rotating before laying it down.
Precautions To Take When Sanding Paint
1. Sanding of lead based paint is NOT RECOMMENDED due to the difficulty of
controlling the contaminated dust. The greatest danger of lead poisoning is to
children and pregnant women.
2. Since it is difficult to identify whether or not a paint contains lead without a
Q
chemical analysis, we recommend the following precautions when sanding any
paint:
PERSONAL SAFETY
1. No children or pregnant women should enter the work area where the paint
sanding is being done until all clean up is completed.
2. A dust mask or respirator should be worn by all persons entering the work area.
The filter should be replaced daily or whenever the wearer has difficulty breathing.
NOTE: Only those dust masks suitable for working with lead paint dust and fumes
should be used. Ordinary painting masks do not offer this protection. See your
local hardware dealer for the proper respiratory protection.
3. NO EATING, DRINKING or SMOKING should be done in the work area to prevent
ingesting contaminated paint particles. Workers should wash and clean up
BEFORE eating, drinking or smoking. Articles of food, drink, or smoking should
not be left in the work area where dust would settle on them.
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FIG. 15
5˚–15˚