DeWalt DWE490 - Cutting Metal

10
ENGLISH
• 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
7
,
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
2
and subsequently
operate the on/off trigger
1
.
Release the lock-off button
2
.To stop the tool, release
theswitch.
Lock-on Button (Fig.A)
DWE494 Only
For continuous operation depress the lock-on button
8
and
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
DeWALT
ServiceCentre.
Spindle Lock (Fig.A)
The spindle lock
3
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
e
WALT repairagent.

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.
The machine must always work in an upgrinding motion.
Otherwise, the danger exists of it being pushed uncontrolled
out of thecut.
When cutting profiles and square bar, it is best to start at the
smallest crosssection.
Rough Grinding
Never use a cutting disc forroughing.
Always use the guard type27.
The best roughing results are achieved when setting the
machine at an angle of 30° to 40°. Move the machine back and
forth with moderate pressure. In this manner, the workpiece
will not become too hot, does not discolour and no grooves
areformed.
Cutting Stone
The machine shall be used only for dry cutting. For cutting
stone, it is best to use a diamond cutting disc. Operate the
machine only with additional dust protectionmask.
Working Advice
Exercise caution when cutting slots in structuralwalls.
Slots in structural walls are subject to the country-specific
regulations. These regulations are to be observed under all
circumstances. Before beginning work, consult the responsible
structural engineer, architect or the constructionsupervisor.
Using Flap Discs

WARNING: Metal dust build-up. Extensive use of flap
discs in metal applications can result in the increased
potential for electric shock. To reduce this risk, insert an
RCD before use and clean the ventilation slots daily by
blowing dry compressed air into the ventilation slots
inaccordance with the below maintenanceinstructions.