Prior To Operation - DeWalt DW831 Instruction Manual

English
Mounting and Removing Hubbed
Wheels (Fig. A)
Hubbed wheels install directly on the spindle. Thread of
accessory must match thread of spindle.
1. Remove backing flange by pulling away from tool.
2. Thread the wheel on the spindle
3. Depress the spindle lock button
tighten the hub of the wheel.
4. Reverse the above procedure to remove the wheel.
NOTICE: Failure to properly seat the wheel before
turning the tool on may result in damage to the tool
or the wheel.
Mounting Wire Cup Brushes and
Wire Wheels (Fig. A)

WARNING: Failure to properly seat the brush/wheel
could result in serious injury (or damage to the tool
or wheel).

CAUTION: To reduce the risk of personal injury,
wear work gloves when handling wire brushes
and wheels. They can become sharp.

CAUTION: To reduce the risk of damage to the
tool, wheel or brush must not touch guard when
mounted or while in use. Undetectable damage
could occur to the accessory, causing wires to
fragment from accessory wheel or cup.
Wire cup brushes or wire wheels install directly on the
threaded spindle without the use of flanges. Use only wire
brushes or wheels provided with a threaded hub. These
accessories are available at extra cost from your local dealer
or authorised service center.
1. Place the tool on a table, guard up.
2. Thread the wheel on the spindle by hand.
3. Depress spindle lock button
hub of the wire wheel or brush to tighten the wheel.
4. To remove the wheel, reverse the above procedure.
NOTICE: To reduce the risk of damage to the tool,
properly seat the wheel hub before turning the tool on.
Mounting Sanding Backing Pads (Fig. G)
DW831
nOTE: Use of a guard with sanding discs that use backing
pads, often called fiber resin discs, is not required. Since a
guard is not required for these accessories, the guard may or
may not fit correctly if used.

WARNING: Failure to properly seat the clamp nut
and/or pad could result in serious injury (or damage
to the tool or wheel).

WARNING: Proper guard must be reinstalled for
grinding wheel, cutting wheel, sanding flap disc,
wire brush or wire wheel applications after sanding
applications are complete.
1. Place or appropriately thread backing pad
the spindle.
2. Place the sanding disc 16
3. While depressing spindle lock button
sanding clamp nut on spindle, piloting the raised
15
8
1 by hand.
2 and use a wrench to
and use a wrench on the
2
17 on
on the backing pad 17 .
2 , thread the
hub on the clamp nut into the center of san ding disc
and backing pad.
4. Tighten the clamp nut by hand. Then depress the
spindle lock button while turning the sanding disc until
the sanding disc and clamp nut are snug.
5. To remove the wheel, grasp and turn the backing
pad and sanding pad while depressing the spindle
lock button.
Fig. G
15
16
17

Prior to Operation

• Install the guard and appropriate disc or wheel. Do not
use excessively worn discs or wheels.
• Be sure the backing and threaded locking flange are
mounted correctly. Follow the instructions given in the
Accessory Chart.
• Make sure the disc or wheel rotates in the direction of
the arrows on the accessory and the tool.
• Do not use a damaged accessory. Before each use
inspect the accessory such as abrasive wheels for chips
and cracks, backing pad for cracks, tear or excess wear,
wire brush for loose or cracked wires. If power tool or
accessory is dropped, inspect for damage or install an
undamaged accessory. After inspecting and installing
an accessory, position yourself and bystanders away
from the plane of the rotating accessory and run the
power tool at maximum no-load speed for one minute.
Damaged accessories will normally break apart during
this test time.
OPERATION

WARNING: To reduce the risk of serious personal
injury, turn unit off and disconnect it from
power source before making any adjustments or
removing/installing attachments or accessories.
An accidental start-up can cause injury.
Proper Hand Position (Fig. H)

WARNING: To reduce the risk of serious personal
injury, ALWAYS use proper hand position as shown.

WARNING: To reduce the risk of serious personal
injury, ALWAYS hold securely in anticipation of a
sudden reaction.