Maintenance - DeWalt DWE4557 Original Instructions Manual

ENGLISH
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.
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.
14
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.

MAINTENANCE

Your D WALT power tool has been designed to operate
E
over a long period of time with a minimum of maintenance.
Continuous satisfactory operation depends upon proper tool
care and regular cleaning.
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.
Pop-off Brushes
The motor will be automatically shut off indicating that the
carbon brushes are nearly worn out and that the tool needs
servicing. The carbon brushes are not user-serviceable. Take the
tool to an authorised D WALT repair agent.
E
Lubrication
Your power tool requires no additional lubrication.
Cleaning
WARNING: Blow dirt and dust out of the main housing
with dry air as often as dirt is seen collecting in and around
the air vents. Wear approved eye protection and approved
dust mask when performing this procedure.
WARNING: Never use solvents or other harsh chemicals
for cleaning the non-metallic parts of the tool. These
chemicals may weaken the materials used in these parts.
Use a cloth dampened only with water and mild soap.
Never let any liquid get inside the tool; never immerse any
part of the tool into a liquid.
Optional Accessories
WARNING: Since accessories, other than those offered
by D WALT, have not been tested with this product, use
E
of such accessories with this tool could be hazardous.
To reduce the risk of injury, only D
accessories should be used with this product.
Consult your dealer for further information on the
appropriate accessories.
WALT recommended
E