Dewalt DWE43244N Instruction Manual - Page 13

Spindle Lock Fig. A, Surface Grinding, Sanding, Wire Brushing, and Finishing Fig.

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continue to run after the switch is released. To unlock and turn off the tool, depress and release the switch. NOTE: A grinder should never be locked ON by any other means. Spindle Lock (Fig. A) The spindle lock 2 is provided to prevent the spindle from rotating when installing or removing wheels. Operate the spindle lock only when the tool is turned off, unplugged from the power supply, and has come to a complete stop. NOTICE: To reduce the risk of damage to the tool, do not engage the spindle lock while the tool is operating. Damage to the tool will result and attached accessory may spin off possibly resulting in injury. To engage the lock, depress the spindle lock button and rotate the spindle until you are unable to rotate the spindle further. Surface Grinding, Sanding, Wire Brushing and Finishing (Fig. I) CAUTION: Always use the correct guard per the instructions in this manual. WARNING: Metal dust build-up. Extensive use of flap discs in metal applications can result in the increased potential for electric shock. To reduce this risk, use a ground fault circuit interrupter (GFCI) protected supply and clean the ventilation slots daily by blowing dry compressed air into the ventilation slots in accordance with the below maintenance instructions. To perform work on the surface of a workpiece: 1. Allow the tool to reach full speed before touching the tool to the work surface. 2. Apply minimum pressure to the work surface, allowing the tool to operate at high speed. Material removal rate is greatest when the tool operates at high speed. Fig. I Angle 3. Maintain an appropriate angle between the tool and work surface. Refer to the chart according to particular function. Function Grinding Sanding with Flap Disc Sanding with Backing Pad Wire Brushing Surface Finishing Angle 20˚-30˚ 5˚-10˚ 5˚-15˚ 5˚-10˚ 0˚-5˚ 4. Maintain contact between the edge of the wheel and the work surface. -- If grinding, sanding with flap discs or wire brushing move the tool continuously in a forward and English back motion to avoid creating gouges in the work surface. -- If sanding with a backing pad, move the tool constantly in a straight line to prevent burning and swirling of work surface. -- If surface finishing, constantly move the tool to achieve the proper finish and to prevent overheating of the work surface. NOTE: Allowing the tool to rest on the work surface without moving will damage the work piece. 5. Remove the tool from work surface before turning tool off. Allow the tool to stop rotating before laying it down. CAUTION: Use extra care when working over an edge, as a sudden sharp movement of grinder may be experienced. Precautions To Take When Working on a Painted Workpiece 1. Sanding or wire brushing 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 or wire brushing 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 N.I.O.S.H. 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. 3. Sanding should be done in a manner to reduce tracking of paint dust outside the work area. Cleaning and Disposal 1. All surfaces in the work area should be vacuumed and thoroughly cleaned daily for the duration of the sanding project. Vacuum filter bags should be changed frequently. 11

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ENGLISH
11
continue to run after the switch is released. To unlock and
turn off the tool, depress and release the switch.
NOTE:
A grinder should never be locked ON by any
other means.
Spindle Lock (Fig. A)
The spindle lock 
 2 
is provided to prevent the spindle from
rotating when installing or removing wheels. Operate the
spindle lock only when the tool is turned off, unplugged
from the power supply, and has come to a complete stop.
NOTICE:
To reduce the risk of damage to the tool, do
not engage the spindle lock while the tool is operating.
Damage to the tool will result and attached accessory
may spin off possibly resulting in injury.
To engage the lock, depress the spindle lock button
and rotate the spindle until you are unable to rotate the
spindle further.
Surface Grinding, Sanding, Wire Brushing
and Finishing (Fig. I)
±
CAUTION: Always use the correct guard per the
instructions in this manual.
±
WARNING: Metal dust build-up.
Extensive use
of flap discs in metal applications can result in the
increased potential for electric shock. To reduce
this risk, use a ground fault circuit interrupter
(GFCI) protected supply and clean the ventilation
slots daily by blowing dry compressed air into the
ventilation slots in accordance with the below
maintenance instructions.
To perform work on the surface of a workpiece:
1. Allow the tool to reach full speed before touching the
tool to the work surface.
2. Apply minimum pressure to the work surface, allowing
the tool to operate at high speed. Material removal rate
is greatest when the tool operates at high speed.
Angle
Fig. I
3. Maintain an appropriate angle between the tool
and work surface. Refer to the chart according to
particular function.
Function
Angle
Grinding
20˚-30˚
Sanding with Flap Disc
5˚-10˚
Sanding with Backing Pad
5˚-15˚
Wire Brushing
5˚-10˚
Surface Finishing
0˚-5˚
4. Maintain contact between the edge of the wheel and
the work surface.
-
If grinding, sanding with flap discs or wire brushing
move the tool continuously in a forward and
back motion to avoid creating gouges in the
work surface.
-
If sanding with a backing pad, move the tool
constantly in a straight line to prevent burning and
swirling of work surface.
-
If surface finishing, constantly move the tool
to achieve the proper finish and to prevent
overheating of the work surface.
NOTE:
Allowing the tool to rest on the work surface without
moving will damage the work piece.
5. Remove the tool from work surface before turning tool
off. Allow the tool to stop rotating before laying it down.
±
CAUTION:
Use extra care when working over an
edge, as a sudden sharp movement of grinder may
be experienced.
Precautions To Take When Working on
a Painted Workpiece
1. Sanding or wire brushing 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 or wire brushing 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 N.I.O.S.H.
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.
3. Sanding should be done in a manner to reduce tracking
of paint dust outside the work area.
Cleaning and Disposal
1. All surfaces in the work area should be vacuumed
and thoroughly cleaned daily for the duration of
the sanding project. Vacuum filter bags should be
changed frequently.