DeWalt DWE4212 Manual De Instrucciones página 42

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rotating. Make sure the wheel has come to a complete
stop be fore laying the tool down.
NoTE: 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.
Slider Switch (Fig. A)
DWE4214, DWE4227, DWE4336

WARNING: Before connecting the tool to a power
supply, be sure the slider switch is in the off position
by pressing the rear part of the switch and releasing.
Ensure the slider switch is in the off position 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 slider
switch is locked on when the power is connected, the
tool will start unexpectedly.
To start the tool, slide the ON/OFF slider switch
the front of the tool. To stop the tool, release the ON/OFF
slider switch.
For continuous operation, slide the switch toward the front
of the tool and press the forward part of the switch inward.
To stop the tool while operating in continuous mode, press
the rear part of the slider switch and release.
Paddle Switch (Fig. A)
DWE4212, DWE4314
1. To turn the tool on, push the lock-off lever
the back of the tool, then depress the paddle switch
The tool will run while the switch is depressed.
2. Turn the tool off by releasing the paddle switch.
lock-on Button
NoTE: The DWE4314N does not have this feature.
• The lock-on button 13 offers increased comfort in
extended use applications. To lock the tool on, depress
the lock-on button when the tool is running. The tool
will continue to run after the paddle switch is released.
To unlock the tool, depress and release the paddle
switch. This will cause the tool to stop.
Trigger Switch (Fig. A)
DWE4315
To turn the tool on, depress lock-off button
switch 11 . The trigger can be feathered as long as the
lock-off button is depressed. The tool will remain running
while the trigger is depressed. Turn the tool off by releasing
the trigger.
Spindle Lock (Fig. B)
The spindle lock 1 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.
40
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

CAUTION: Always use the correct guard per the
instructions in this manual.
To perform work on a 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.
7 toward
3. Maintain an appropriate angle between the tool
and work surface. Refer to the chart according to
particular function.
toward
9
8 .
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
9 then trigger
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
Angle
Function
Grinding
Sanding with Flap Disc
Sanding with Backing Pad
Wire Brushing
Angle
20˚-30˚
5˚-10˚
5˚-15˚
5˚-10˚