Use; Running In The Blade - Femi 782 Gebrauchsanleitung Und Wartung

4

USE

4.1

RUNNING IN THE BLADE

ATTENTION: If the correct running in procedure
is not performed, the blade's cutting precision
may be irreparably compromised.
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.40-50 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.50 mm should be done in about 4
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.
4.2 WORKING (Fig. 7)
Two speed version
Push the green button "1" of the main switch D to anable
machine operation.
Electronic version
Turn the main switch D to position 1: in doing the switch
comes on and machine is ready for operation.
ATTENTION: Before starting any cutting
operation, check that all the protections are
complete and in the correct position.
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.
ATTENTION: 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.
ATTENTION: Always release button A 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.
10
Electronic version
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 and wait for automatic
reset which usually takes place after a few minutes.
Your sawing machine is equipped with an electronic speed
governor which also includes a motor protection function
obtained by means of an amperometric limiter. In this way
can not absorb an amount of current greater than the set
one, expressed by the maximum value of absorption (see
2.5).
If the limiter trips while the machine is in operation, slightly
decrease the cutting pressure in addition, this enables to
safeguard the blade life and performance and to obtain
always a sharp and clean cut.
4.3 REPLACING THE BLADE (Fig. 9)
CAUTION: When you perform this operation,
always wear protective gloves to avoid contact
with the teeth of the blade.
- check that the main switch D is at position 0;
- slacken the handle Q and slide the blade guide P as far
as it will go, following the direction on the arrow (Fig.
8);
- remove the protective casing unscrewing the four
screws;
- slacken the blade tension, turning the handwheel B in a
anti-clockwise direction;
- using a 10 mm. spanner, slacken the exagonal nuts R
on the two blade guides on the outside of the blade
(Fig. 9);
- with the same spanner gently turn the head of the
screws on the same blade-guide in a anti-clockwise
direction so as to move the bearings far enogh away
from the blade to enable you to extract it easily from
the guides;
- extract the blade first from the guides and then from
the rubber coated pulleys;
- insert the new blade first between the guides and then
onto the rubber coated pulleys, with the teeth facing as
showed in picture 9;
- put the blade under tension again as described in point
3.1 and reposition the two outer blade guides in slight
contact with the blade, turning the head of the screws
S in a clockwise direction;
- lock the two exagonal nuts R again;
- replace the protective casing, being careful to insert
the blade between the straps of the protection T;
- reposition the blade guides P in the correct position for
the next cut.