Ratio LR400NM Manual De Instrucciones página 33

4. OPERATING THE ON/OFF SWITCH (SEE
FIG E, F)
Slide the on/off switch to the position marked "I"
to start the machine. (See Fig. E)
Slide it to the position marked "0" to stop it. (See
Fig. F)
5. VARIABLE SPEED CONTROL (SEE FIG G)
With the variable speed control (1), the required
speed can be selected (also while running).
The required speed is dependent on the material
and is to be determined by a practical trial.
After longer periods of working at low speed,
allow the machine to cool down by running it for
approx. 3 minutes at maximum speed with no
load.
G
6. USING THE SANDER (SEE FIG. H)
Guide your sander parallel to the working surface
and move it in circles or in a cross pattern. Do
not tilt the tool in order to avoid deep unwanted
sanding marks. The amount of material removed
is determined by the speed of the sanding disc
and the grit size used. The speed of the sanding
disc diminishes relative to the pressure applied
to the tool. For faster removal, do not increase
pressure on the tool, but use a coarser grit size.
H
E
7. SELECT THE RIGHT SAND PAPER
Selecting the correct grit of sandpaper is an
F
extremely important decision that will allow you
to achieve the best quality sanding finish.
Coarse grit will remove the most material and
finer grit will give you the best finish in all sanding
operations. The condition of the surface to be
sanded will determine which grit will do the job.
If the surface is rough:
Start with coarse grit (sold separately) and sand
until the surface is uniform. Then use medium
to remove any scratches left by the coarse grit.
Then use finer grit (sold separately) for finishing
the surface.
Note: Always continue sanding with each grit
until the surface is uniform.
WORKING HINTS FOR
YOUR SANDER
If your power tool becomes too hot, especially
when used at low speed, set the speed to
maximum and run it with no load for 2-3 minutes
to cool the motor. Avoid prolonged usage at
very low speeds. Always use sand paper that is
suitable for the material you want to sand.
Always ensure the work-piece is firmly held or
clamped to prevent movement.
Any movement of the material may affect the
quality of the sanding finish.
Start your sander before sanding and turn it off
only after you stop sanding. For the best results,
sanding wood in the direction of the grain.
Do not start sanding without having the
sandpaper fitted.
Do not allow the sandpaper to wear away it will
damage the base-plate. The guarantee does not
cover base-plate wear and tear.
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