DeWalt D28112 Instruction Manual page 10

SLIDER SWITCH (D28110, D28112)
CAUTION: Before connecting the tool to a power supply, be sure
the switch is in the off position by pressing the rear part of the switch
and releasing. Ensure the 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 switch is locked on
when the power is connected, the tool will start unexpectedly.
To start the tool, slide the ON/OFF
switch (L) toward the front of the tool.
To stop the tool, release the ON/OFF
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 operat-
ing in continuous mode, press the rear
part of the switch and release.
LOCK-ON BUTTON (D28402)
The lock-on button (J) offers increased
comfort in extended use applications.
To lock the tool on, push the lock-off
lever (B) toward the back of the tool
then depress the paddle switch (A).
With the tool running, depress the lock-
on button (J). 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.
CAUTION: Allow the tool to reach full speed before touching tool
to the work surface. Lift the tool from the work surface before turn-
ing the tool off.
SPINDLE LOCK
The spindle lock (C) is provided to prevent the spindle from rotat-
ing 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. Do not engage the spindle
lock while the tool is operating because
damage to the tool will result. To engage the
lock, depress the spindle lock button and
rotate the spindle until you are unable to
rotate the spindle further.
Mounting and Using Depressed Center
Grinding Wheels and Sanding
Flap Discs
MOUNTING AND REMOVING HUBBED WHEELS
L
adjustments or removing or installing attachments or acces-
sories. Before reconnecting the tool, depress and release the
paddle switch to ensure that the tool is off.
Hubbed wheels install directly on the 5/8"-11 threaded spindle.
Thread of accessory must match thread of spindle.
1. Backing flange is retained to the grinder by an O-ring on the
2. Thread the wheel on the spindle by hand.
3. Depress the spindle lock button and use a wrench to tighten the
J
A B
4. Reverse the above procedure to remove the wheel.
tool on may result in damage to the tool or the wheel.
MOUNTING NON-HUBBED WHEELS
adjustments or removing or installing attachments or acces-
sories. Before reconnecting the tool, turn the switch on and off
as previously described to ensure that the tool is off.
9
CAUTION: Turn off and unplug the tool before making any
spindle. Remove backing flange by pulling and twisting flange
away form the machine.
hub of the wheel.
CAUTION: Failure to properly seat the wheel before turning the
CAUTION: Turn off and unplug the tool before making any
C