13
EN
4.2 WORKING
WARNING:
Before any cutting operation, check that all safety
guards are sound and correctly positioned.
SINGLE-PHASE VERSION (Fig. 8)
Switch the main switch B to position 1 so that it lights us
and the machine is ready.
THREE-PHASE VERSION (Fig. 3)
Press button C of main switch B.
Select the desired speed by means of the speed variator
provided.
Once you have completed all the procedures and operations
described so far, you may start the working processes.
To perform the cut, move to the front of the machine and
grip the handgrip with your right hand.
WARNING:
Keep your left hand away from the cutting area
and on no account try to reach it when cutting
is in process.
Using the index finger of your right hand, press the run
button A (Fig. 4) and gradually lower the machine body
until it comes lightly into contact with the part to be cut.
Now begin to apply gradual pressure on the part and
complete the cut.
Always release button A (Fig.4) between one cutting
operation and another, while you are positioning the part.
do not try to block it or alter its functional characteristics in
any way.
If the machine suddenly stops after numerous consecutive
cuts, do not be alarmed.
The heat protector device of the motor has been activated,
breaking the power supply when the temperature of the
coils reaches the threshold limit defined by the insulation
class, to prevent damage to the motor.
In this case, release the button A (Fig. 4) and wait for
automatic reset which usually takes place after a few
minutes.
4.3 RUNNING IN THE BLADE
To obtain the best performance, the bi-metal blades fitted
on your sawing machine must be run in for a short period.
For this reason the first two or three cuts should be done
where possible on a solid piece D.70-80 mm, using a very
slight pressure on the blade, and gradually increasing
pressure in subsequent cuts.
To gauge the correct pressure in normal operating conditions
defined by this manual (see cutting table), consider for
example that the first cut on solid steel (eg. C40) D.80 mm
should be done in about 5 minutes.
After running-in, the same piece may easily be cut in
about 2 minutes. If the running-in process is done correctly,
the finish and precision of the cut will be of better quality
and the blade will last longer.
4.4 REPLACING THE BLADE
When you perform this operation, always wear protective
gloves to avoid contact with the teeth of the blade.
• make sure that the main switch B (Fig. 3)/(Fig. 8) is on
position 0;
• turn the handwheel B (Fig. 4) counterclockwise until the
tensioning device indicator turns off;
• loosen handles D (Fig. 4) to move the sawblade guides
E (Fig. 4) as far as they go;
• loosen handwheels A (Fig.12) and remove the safety
guard by lifting it from its seat B (Fig.12);
Removing the safety casing activates the safety
microswitch which automatically disables the motor.
• fit the new blade first between the guides, then onto the
wheels;
• tighten the blade again.
Check that the back of the blade goes to rest on the
bearing inside the upper part of the machine body A (Fig.
10): if it does not, slacken the blade slightly and move it
back into the right position.
• fit the protective casing.
At this point, activate button A (Fig. 4) with small impulses
so that the blade positions itself correctly on the pulleys.
4.5 USING THE VICE (Fig. 13)
The chuck of the saw is of the quick sliding type so that
the slider easily and rapidly approaches the pieces to be
locked.
To lock the piece to be cut in the chuck:
• place yourself in front of the machine;
• release the lever A towards the piece to be cut by
unlocking vice part B;
• position the slider at a few millimetres from the piece to
be cut;
• move the A towards the piece and lock it;
• turn lever C clockwise so as to definitely lock the piece
between the jaws.
If more pieces of the same bar are to be cut, you only
need to unlock and then re-lock the chuck by means of
lever C
.
If you need, instead, to change the bar, turn the lever C
counterclockwise to unlock the chuck and then pull lever
A towards you so that the slider moves away from the
piece.
4.6 CORRECT POSITIONING OF THE PIECE IN
THE CLAMP (Fig. 13)
The pieces to be cut should be fitted directly between the
jaws D without adding other objects.
WARNING:
Never hold the pieces to be cut in your hand.
When the pieces to be cut are profiled sections, flat pieces
or special shapes, refer to the examples shown in the
figures.
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