DeWalt DWE402N Manual De Instrucciones página 11

the switch is off. Depress and release the paddle switch as
described above after any interruption in power supply to
the tool, such as the activation of a ground fault interrupter,
throwing of a circuit breaker, accidental unplugging, or power
failure. If the paddle switch is locked on, the tool will start
unexpectedly when it is reconnected.

CAUTION: To reduce unexpected tool movement, do not
switch the tool on or off while under load conditions. Allow
the grinder to run up to full speed before touching the work
surface. Lift the tool from the surface before turning the tool
off. Allow the tool to stop rotating before putting it down.
1. To turn the tool on, push the lock-off lever
back of the tool, then depress the paddle switch
will run while the switch is depressed.
2. Turn the tool off by releasing the paddle switch.
Lock-On Button
DWE402, DWE402g, DWE4222, DWE43114, DWE43144
The lock-on button 10 offers increased comfort in
extended use applications. To lock the tool on, depress
the lock-on button while the tool is running. The tool will
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 is provided to prevent the spindle from
1
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 and Wire Brushing (Fig. H)

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 an RCD
or GFCI before use 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.
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
toward the
9
8 . The tool
Angle
20˚-30˚
5˚-10˚
5˚-15˚
5˚-10˚
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.
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.
2. Plastic drop cloths should be gathered up and disposed
of along with any dust chips or other removal debris. They
should be placed in sealed refuse receptacles and disposed
of through regular trash pick-up procedures.
During clean up, children and pregnant women should be
kept away from the immediate work area.
3. All toys, washable furniture and utensils used by children
should be washed thoroughly before being used again.
ENglish
11