DeWalt DWE490 - Assembly, Operation, and Maintenance; Disc and Accessory Fitting Procedures; Pre-Operation Checks and Safety

7
ENGLISH
d ) Do not restart the cutting operation in the
workpiece. Let the wheel reach full speed and
carefully reenter the cut. The wheel may bind, walk up
or kickback if the power tool is restarted in theworkpiece.
e ) 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.
f ) Use extra caution when making a "pocket cut" into
existing walls or other blind areas. The protruding
wheel may cut gas or water pipes, electrical wiring or
objects that can causekickback.
Safety Warnings Specific for Sanding
Operations
a ) Do not use excessively oversized sanding disc
paper. Follow manufacturer's recommendations,
when selecting sanding paper. Larger sanding paper
extending beyond the sanding pad presents a laceration
hazard and may cause snagging, tearing of the disc
orkickback.
Safety Warnings Specific for Wire Brushing
Operations
a ) Be aware that wire bristles are thrown by the brush
even during ordinary operation. Do not overstress
the wires by applying excessive load to the brush. The
wire bristles can easily penetrate light clothing and/orskin.
b ) If the use of a guard is recommended for wire
brushing, do not allow any interference of the
wire wheel or brush with the guard. Wire wheel or
brush may expand in diameter due to work load and
centrifugalforces.
Additional Safety Rules for Grinders
• Do not use Type 11 (flaring cup) wheels on this tool.
Using inappropriate accessories can result ininjury.
• Always use side handle. Tighten the handle securely. The
side handle should always be used to maintain control of the
tool at alltimes.

WARNING: We recommend the use of a residual current
device with a residual current rating of 30mA orless.
Residual Risks
In spite of the application of the relevant safety regulations
and the implementation of safety devices, certain residual risks
cannot be avoided. These are:
• Impairment ofhearing.
• Risk of personal injury due to flyingparticles.
• Risk of burns due to accessories becoming hot
duringoperation.
• Risk of personal injury due to prolongeduse.
Electrical Safety
The electric motor has been designed for one voltage only.
Always check that the power supply corresponds to the voltage
on the ratingplate.
Your
DeWALT
tool is double insulated in accordance
with EN60745; therefore no earth wire isrequired.

WARNING: 115 V units have to be operated via a fail-safe
isolating transformer with an earth screen between the
primary and secondarywinding.
If the supply cord is damaged, it must be replaced only by
DeWALT
or an authorised serviceorganisation.
NOTE: This device is intended for the connection to a power
supply system with maximum permissible system impedance
Zmax of 0.28 Ω at the interface point (power service box)
of user’s supply. The user has to ensure that this device is
connected only to a power system which fulfills the requirement
above. If necessary, the user can ask the public power supply
company for the system impedance at the interfacepoint.
Mains Plug Replacement
(U.K. & Ireland Only)
If a new mains plug needs to be fitted:
• Safely dispose of the oldplug.
• Connect the brown lead to the live terminal in theplug.
• Connect the blue lead to the neutralterminal.

WARNING: No connection is to be made to the
earthterminal.
Follow the fitting instructions supplied with good quality plugs.
Recommended fuse: 13A.
Using an Extension Cable
If an extension cable is required, use an approved 3–core
extension cable suitable for the power input of this tool (see
Technical Data).The minimum conductor size is 1.5 mm
2
; the
maximum length is 30m.
When using a cable reel, always unwind the cablecompletely.
Package Contents
The package contains:
1 230 mm diamond wheel (KD or GK models only)
1 Angle grinder
1 Guard
1 Side handle
1 Flange set
1 Two-pin spanner
1 Kitbox (K-models only)
1 Instruction manual
• Check for damage to the tool, parts or accessories which may
have occurred duringtransport.
• Take the time to thoroughly read and understand this manual
prior tooperation.