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2.1
ELECTRIC CONNECTION
Grounding
Check that the power grid to which the machine is
plugged in is grounded as foreseen by the safety
rules in force, and that the current socket is in
good condition.
Plug fitting
Connect a plug in compliance with safety regulation
to the end of the mains cable of the machine, check
that the yellow/green protective conductor is fitted
into the relative terminal.
Choice of the thermal protection
We remind the user that a magnetothermic
protection, fit for safeguarding all the conductors
from short-circuits and overloads, must always
be placed before the power grid.
Said protection is to be chosen according to the
electric specifications of the machine, indicated
on the data plate applied to it.
2.2
NOISE RELATED INFORMATION
Under normal working conditions as described in
these instructions, the grinding machines bring
about a level of acoustic pressure corresponding
to:
Leq = 60 dB (A) when idling;
Leq = 77 dB (A) during workings (for example:
lapping a C 40 steel rod)
Tests were carried out according to UNI 7712,
ISO 3740, ISO 3746 and CEE 89/392 regulation.
It is however recommended to use personal means
for hearing protection, such as headsets or
earphones.
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.
10
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 12 of switch 2.
WARNING: ALWAYS WEAR ACCIDENT
PREVENTION EYEGLASSES.
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 13 of switch 2 or press the emergency
stop button 11.
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