Femi 240, Instructions For Use And Maintenance Manual

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EN
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2.3 ELECTROMAGNETIC COMPATIBILITY
INFORMATION
The recent European Safety Standards, especially EEC
Directive 89/336 , set forth that all the equipment must be
fit with radio interference suppressors both to and from the
outside environment.
This machine conforms to such Standards.
Tests were carried out according to
EN 55011, EN 55014,
EN 50082-1, IEC 1000-4-2, IEC 1000-4-4 regulations.
3 ADJUSTMENTS (Picture 2-3)
The international safety rules prescribe that the adjustable
chip guards
7 and the piece-rest 6 are to be positioned not
more than 2 mm. from the peripheral edge of the grinding
wheel.
As the grinding wheel wears out, its diameter decreases,
and these distances are then increased.
Periodically check their values and, if they have increased,
reduce them within the fixed limits by adjusting accessories
7 and 6 by means of their fastening screws.
3.1 USE OF THE GRINDING WHEEL (Picture 4-
8)
Insert the input cable plug into the current socket of the
power grid.
Start running the machine by pressing the green pushbutton
14 of switch 2 .
WARNING: ALWAYS WEAR ACCIDENT
PREVENTION EYEGLASSES.
In order to check the rotating direction, activate switch 2
by means of slight impulses so that the machine will not
rotate at maximum capacity. If the rotating direction is not
the one indicated by the arrows on the safety hoods, stop
the machine and change the phase connections in the plug
(see “ELECTRICAL CONNECTION”).
Gently bring the piece to be worked in contact with the
grinding wheel, laying it on piece-rest
6 , and start applying
pressure progressively, but without pushing too hard, so
that the machine will not lose the normal r.p.m.
CAUTION: The piece being worked on must
always be held with both hands, and cooled
every now in a tank of water.
The grinding wheel on the right is of a thicker grain: it is
more suitable for chipping operations.
The left grinding wheel is of a thinner grain, and is more
suitable for finishing and grinding tools.
In order to stop the machine, press the red pushbutton
15
of switch 2 or press the emergency stop button 11 (Picture
9) .
3.2 USE OF THE CONTROL PANEL
(standard fitting for 2.200W machines, on request for all
the other machines)
In order to start the machine, press pushbutton
32 on the
control panel.
In order to stop the machine, press the emergency
mushroom-shaped button
33 .
In order to restart the machine, release the emergency
mushroom-shaped button
33 turning it clockwise and then
press pushbutton 32 again.
3.3 REPLACING THE GRINDING WHEEL
(Pictures 2-5-6)
WARNING: Prior to performing any maintenance
operation, disconnect the electric power supply.
Activate switch 2 to stop the machine and wait until the
grinding wheels have stopped completely.
Take away parts
7 and 6 .
Remove cover 16 from the safety cap, unscrewing the
relevant screws.
With an open key unscrew the nut
17 and keep the shaft
steady through an hexagonal key, keeping in mind that on
the left side it has a left-handed threading, and therefore it
is unscrewed in clockwise direction.
Replace worn out grinding wheel with a new one.
Check if a new grinding wheel is integral
Before mounting the new grinding wheel, it is advisable to
perform a sound test in order to check its integrity.
To carry out this test, the grinding wheels must be dry and
clean, otherwise the emitted sound could result dampened.
With the help of a non-metallic tool (wooden handle of a
screwdriver or a wooden mallet), lightly strike the grinding
wheel on its side
(Picture 5) : a light strike against an
integral grinding wheel produces a pleasant and clear sound.
If, on the other hand, the emitted sound is dull or cracked,
the grinding wheel should not be used.
Retighten 17 (Picture 6) screw nut.
Reassemble cover 16 of the safety cap.
Re-assemble the pieces that were taken off previously.
If the radial and axial movement of the rotating grinding
wheel, gauged both on the circumference and on the side
wall of the grinding wheel respectively, should be too much,
the grinding wheel produces excessive vibration when used
at maximum rotating capacity.
In order to decrease such value, stop the machine, loosen
the grinding wheel and turn it on its axis by 1/4 turn holding
the motor shaft firmly, then lock the grinding wheel. If the
problem persists, repeat the operation as many times as
required until the best possible position is found.
3.4 USE OF THE BRUSH (Picture 7)
The right-hand part of the combined bench grinder (or right-
hand and left-hand in the polishing machines) is
manufactured so that it can house a brush for the cleaning
or polishing of various types of metals.
It is possible to fit metal wire brushes (cleaning) or cloth/
fabric brushes (polishing) with varying maximum diameter,
maximum width and stop collar hole, depending on the