Personal Safety; Environmental Safety - DeWalt DCG412 Instruction Manual

3. While depressing the spindle lock button
(C), thread the threaded clamp nut (S) on
spindle, piloting the raised hub on the
threaded clamp nut into the center of the
sanding disc and backing pad.
4. Tighten the threaded clamp nut by hand.
Then depress the spindle lock button
while turning the sanding disc until the
sanding disc and threaded locking flange
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
(FIG. 15)
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
Medium
Fine Finishing
Very Fine Finishing
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 1" (25.4
mm) of work surface.
FIG. 14
R
S
Q
16–30 grit
36–80 grit
100–120 grit
150–180 grit
FIG. 15
5˚–15˚
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 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 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
NIOSH-approved mask.
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.

ENVIRONMENTAL SAFETY

1. Paint should be removed in such a manner as to minimize the
amount of dust generated.
2. Areas where paint removal is occurring should be sealed with plastic
sheeting of 4 mils thickness.
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