DeWalt DWE490 - Prior to Operation

9
ENGLISH
Fitting and Removing a Grinding or Cutting
Disc (Fig.A,D,E)

WARNING: Do not use a damageddisc.
1. Place the tool on a table, guardup.
2. Fit the backing flange
10
correctly onto the spindle
4
(Fig.D).
3. Place the disc
16
on the backing flange
10
(Fig.E1). When
fitting a disc with a raised centre, make sure that the raised
centre
17
is facing the backing flange
10
.
4. Screw the threaded clamp nut
11
onto the spindle
4
(Fig.D):
a. The ring on the threaded clamp nut
11
must face
towards the disc when fitting a grinding disc (Fig. E1);
b. The ring on the threaded clamp nut
11
must face away
from the disc when fitting a cutting disc (Fig. E2).
5. Press the spindle lock button
3
and rotate the spindle
4
until it locks inposition.
6. Tighten the threaded clamp nut
11
with the two-pin
spannersupplied.
7. Release the spindlelock.
8. To remove the disc, loosen the threaded clamp nut
11
with
the two-pinspanner.
Fitting and Removing a Backing Pad/
Sanding Sheet (Fig.A,D,F)
1. Place the tool on a table or flat surface, with the guard
facingup.
2. Remove the backing flange
10
.
3. Place the rubber backing pad correctly onto the spindle
4
.
4. Place the sanding sheet on the rubber backingpad.
5. Screw the threaded sanding clamp nut
12
supplied with
the backing pad onto the spindle. The ring on the threaded
clamp nut must face towards the rubber backingpad.
6. Press the spindle lock button
3
and rotate the spindle
4
until it locks inposition.
7. Tighten the threaded sanding clamp nut
12
with the two-
pin spanner
9
.
8. Release the spindlelock.
9. To remove the rubber backing pad, loosen the threaded
clamp nut
12
with the two-pin spanner
9
.
Fitting a Wire Cup Brush
Screw the wire cup brush directly onto the spindle without the
use of the spacer and threadedflange.
Prior to Operation
• Install the guard and appropriate disc or wheel. Do not use
excessively worn discs orwheels.
• Be sure the inner and outer flange are mounted correctly.
Follow the instructions given in the Grinding and Cutting
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.
• Never use blotters together with bonded abrasiveproducts.
• Do not work with the grinding cup without a suitable guard
inplace.
• Do not strain the machine so heavily that it comes to
a standstill. After heavily straining the power tool,
continue to run it at no-load for several minutes to
cool down the accessory. Do not touch grinding and
cutting discs before they have cooled down. The discs
can become very hot whileworking.
• Do not use the power tool with a cut-offstand.
OPERATION

WARNING: Always observe the safety instructions and
applicableregulations.

WARNING: To reduce the risk of serious personal
injury, turn tool off and disconnect tool from
power source before making any adjustments or
removing/installing attachments or accessories.
Before reconnecting the tool, depress and release the
trigger switch to ensure that the tool isoff.

WARNING:
• Ensure all materials to be ground or cut are secured
inplace.
• Secure and support the workpiece. Use clamps or a
vice to hold and support the workpiece to a stable
platform. It is important to clamp and support the
workpiece securely to prevent movement of the
workpiece and loss of control. Movement of the
workpiece or loss of control may create a hazard and
cause personalinjury.
• Support panels or any oversized workpiece
to minimize the risk of wheel pinching and
kickback. Large workpieces tend to sag under their
own weight. Supports must be placed under the
workpiece near the line of cut and near the edge of the
workpiece on both sides of thewheel.
• Always wear regular working gloves while operating
thistool.
• Apply only a gentle pressure to the tool. Do not exert
side pressure on thedisc.
• Avoid overloading. Should the tool become hot, let it
run a few minutes under no load condition to cool the
accessory. Do not touch accessories before they have
cooled. The discs become very hot duringuse.