INE S.p.A. Via Facca, 10 - 35013 Cittadella - PADOVA - ITALIA Tel. 049/9481111 - Fax 049/9400249 -
[email protected] - www.ine.it
In the case the power source should be introduced into
areas characterised by a high risk of electric shocks, it
is recommended that the connection to the mains be
protected by a highly-sensitive differential circuit
breaker (releasing current: 30 mA, operating time: 30
ms).
Such areas are:
A) places offering limited freedom of movement and
preventing the operator from standing while working;
B) places surrounded by conductive surfaces that may
accidentally come into contact with the welding circuit;
C) wet, damp and hot places.
Prevention against UV rays, fumes and
fires
Arc cutting is a cutting process by which UV rays are
emitted. Operators should therefore protect their eyes
and faces with suitable face masks or helmets
equipped with adequate filter lenses.
Recommended DIN protection grades for filter lenses
are listed below for plasma cutting procedure in relation
of current used:
•
grade 11 - up to 150 Amps
•
grade 12 - from 150 to 250 Amps
•
grade 13 - over 250 Amps
Operators should wear gauntlets, insulating shoes and
fireproof clothes to protect themselves from radiation,
slags and sparks.
Reflection and transmission of UV rays in workplaces
should be reduced by using antiflash welding screens
or panels.
In order to reduce the toxic action of cutting fumes, it is
suggested to operate in ventilated areas. Use fume
extractors close to the cutting area, if ventilation is poor
or lacking.
If the piece to be cutted is covered by chemicals
(solvents, paints, etc.), it should be carefully cleaned
prior to cutting to prevent toxic gas emission.
It is strictly forbidden to plasma cut on fuel tanks,
whether they are full or empty.
Maintenance
Any repair work or replacement of spares should be
carried out by skilled personnel, qualified to operate on
electromechanical systems.
Welders are allowed to remove the side panels of the
welding machine (after disconnecting it from the
mains) only to remove any dust or dirt that may have
been taken in. Such operation, to be carried out by
applying a compressed air jet, is to be repeated at least
every three months. This frequency should be
increased if operating in very dusty places.
Electromagnetic compatibility (EMC)
INE cutting machines are conceived for use in industrial
applications only (CLASS A of CISPR11). If they are
used differently (e.g. for domestic use), they may cause
compatibility problems, as they may interfere with other
electrical appliances operating in the vicinity (radios,
phones, computers, etc.).
It's the user's responsibility to install the power source
and use it in the proper places so that no EMC problems
may arise. When judging the suitability of a workplace,
the presence of the following should be considered:
•
telephone lines and sets
•
receiving and transmitting radio/TV sets
•
computers and control devices
•
safety devices
•
measuring instruments.
Special attention should be paid to people with
pace-makers and similar bio-electronic devices since
they may be influenced by electromagnetic fields.
These people are strongly suggested to keep away
from any places in which cutting is going on.
In the event electromagnetic disturbance should occur,
it's the user's responsibility to solve the situation; INE,
as the manufacturer of the welding set in use, is ready
to assist.
For further information please refer to EN 60974-10
(Enclosure A, particularly) which regulates the matter in
the EEC.
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