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Wesco WS4750 Manual página 19

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2. ROUGH GRINDING
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 discolor and no
grooves are formed.
WARNING! Never use a cutting disc for
grinding.
3. CUTTING
WARNING! For cutting metal, always work with
the wheel guard for cutting.
When cutting, do not press, tilt or oscillate the machine.
Work with moderate feed, adapted to the material being cut.
Do not reduce the speed of running down cutting discs by
applying sideward pressure.
The direction in which the cutting is performed is important.
The machine must always work in an up-grinding motion.
Therefore, never move the machine in the other direction!
Otherwise, the danger exists of it being pushed uncontrolled
out of the cut.
WORKING HINTS FOR
YOUR GRINDER
If your power tool becomes too hot, run no load for 2-3
minutes to cool the motor.
Never start your angle grinder with the disc/accessory in
contact with the workpiece.
Always start at no load to achieve maximum speed then
start working.
Do not force the disc to work faster, reducing the Disc's
moving speed means longer working time.
When grinding, always work with a 30° to 40° angle
between disc and workpiece. Larger angles will cut ridges
into the workpiece and affect the surface finish. Move the
angle grinder across and back and forth over the workpiece.
When using a cutting disc, never change the cutting angle
otherwise you will stall the disc and angle grinder motor or
break the disc.
When cutting, only cut in the opposite direction to the disc
rotation. If you cut in the same direction as the disc rotation
the disc may push itself out of the cut slot.
When cutting very hard material best results can be
achieved with a diamond disc.
When using a diamond disc it will become very hot. If this
happens you will see a full ring of sparks around the rotating
disc. Stop cutting and allow cooling at no load speed for 2-3
minutes.
Always ensure the workpiece is firmly held or clamped to
prevent movement.
EN
MAINTENANCE
Remove the plug from the socket before
carrying out any adjustment, servicing or
maintenance.
Your power tool requires no additional lubrication or
maintenance.
There are no user serviceable parts in your power tool.
Never use water or chemical cleaners to clean your power
tool. Wipe clean with a dry cloth. Always store your power
tool in a dry place. Keep the motor ventilation slots clean.
Keep all working controls free of dust. Occasionally you may
see sparks through the ventilation slots. This is normal and
will not damage your power tool.
If the supply cord is damaged, it must be replaced by the
manufacturer, its service agent or similarly qualified persons
in order to avoid a hazard.
TROUBLESHOOTING
Although your new angle grinder is really very simple to
operate, if you do experience problems, please check the
following:
1. If your grinder will not operate check the power at the
main plug.
2. If your grinder wheel wobbles or vibrates, check that outer
flange is tight, check that the wheel is correctly located on
the flange plate.
3. If there is any evidence that the wheel is damaged do not
use as the damaged wheel may disintegrate, remove it and
replace with a new wheel. Dispose of old wheels sensibly.
4. If working on aluminum or a similar soft alloy, the wheel
will soon become clogged and will not grind effectively.
19

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