DeWalt DWE490 Original Instructions Manual page 35

• 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.
• Never work with the grinding cup without a suitable
protection guard in place.
• Do not use the power tool with a cut-off stand.
• Never use blotters together with bonded
abrasive products.
• Be aware, the wheel continues to rotate after the tools
is switched off.
• The tool is not designed to be used with a
grinding cup.
• Do not use separate reducing bushings or adapters to
adapt large hole abrasive wheels.
Proper Hand Position (Fig. A, G)

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.
Proper hand position requires one hand on the side handle
with the other hand on the body of the tool, as shown in
Figure G.
Switching On and Off (Fig. A)
The on/off switch is equipped with an unlocking switch.
To run the tool, depress the lock-off button
1
operate the on/off trigger
Release the lock-off button
the switch.
Lock-on Button (Fig. A)
DWE494 Only
For continuous operation depress the lock-on button
release the on/off trigger switch.
To stop the tool press the on/off switch again.
The lock-on button can be permanently removed without
compromising compliance with regulatory agencies shown on
the tool's nameplate. Removal of the lock pin must be done by a
D WALT Service Centre.
e
Spindle Lock (Fig. A)
3
The spindle lock 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.
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.
Metal Applications
When using the tool in metal applications, make sure that a
residual current device (RCD) has been inserted to avoid residual
risks caused by metal swarf.
If the power supply is shut off by the RCD, take the tool to
authorised D WALT repair agent.
e

WARNING: In extreme working conditions, conductive
dust can accumulate inside the machine housing when
working with metal. This can result in the protective
insulation inthe machine becoming degraded with a
potential risk of an electrical shock.
To avoid build-up of metal swarf inside the machine, we
recommend to clear the ventilation slots on a daily basis. Refer
to Maintenance.
Cutting Metal
For cutting with bonded abrasives, always use a
protection guard type 1.
When cutting, work with moderate feed, adapted to the
material being cut. Do not exert pressure onto the cutting disc,
tilt or oscillate the machine.
Do not reduce the speed of running down cutting discs by
applying sideward pressure.
2
and subsequently
.
2
.To stop the tool, release
8
EnGLIsh
7
,
and
33