Instructions For Plasma Cutter - Elettro 490 Manual De Instrucciones

IMPORTANT
Before using this device all people authorised to its use, repair
or inspection, should read the book "Safety rules for using
machines" and the "Instruction manual" specific for every
machine. Contact your distributor if you have not understood
some instructions.
Remember: YOUR SAFETY DEPENDS ON YOU!!!
Follow all safety rules and instructions.
It is your job to protect yourselves and others against the risks
related to welding.
The operator is responsible for his own safety and the safety of
others in the work area. He must therefore know and obey all
safety rules.
NOTHING CAN REPLACE GOOD COMMON SENSE!!!
1. SAFETY DEVICES
This unit is provided with the following safety devices:
Thermic: located on the power transformer windings to avoid
overloads and signalled by indicator light G on (see picture 1).
Pneumatic: located on the torch feed line to avoid insufficient
air pressure and signalled by indicator light H (see picture 1).
Electric:
1) located on torch body to avoid dangerous voltages while
replacing nozzle, diffuser, electrode or nozzle holder.
2) to stop the unit when the electrode is so worn that it is
required to be replaced. This second function is signalled by
indicator light I (picture 1).
3) to stop the machine when there is high input voltage tension
this function is signalled by indicator light F (pict. 1)
4) located on the panel of the machine to avoid dangerous
tensions on the torch while replacing it.
• Do not remove or short-circuit the unit safety devices.
• Only use original spares.
• Always replace any damaged part of the unit or torch with
original material.
• Do not use any torches other than the original one.
• Do not let the unit work without covers. This would be
dangerous for operator
surrounding the work area and would prevent the unit
from cooling efficiently.
2. DESCRIPTION OF TECHNICAL SPECIFICATIONS
6

INSTRUCTIONS FOR PLASMA CUTTER

and for those who
IEC 974-1
EN60947-1
ART
Uo
X
I
2
U
2
U
1
3~50/60Hz
I
1
IP23
NOTES: In addition, the welding machine has been designed to
work in areas with grade 3 of pollution (See IEC 664).
3. DESCRIPTION OF UNIT DEVICES (see pict. 1 and 2)
A) Torch security flange
are
B) Texas connection
C) Cutting power adjusting knob
D) This warning lights up to indicate that you must not cut with
the nozzle in contact with the workpiece
E) Mains pilot light
F) Light signalling danger over-tension
G) Light signalling thermostat
H) Light signalling air pressure is not enough
I) Light signalling electrode is worn out
L) Cable pressing device
M Fan grid
N) Mains switch
O) Gauge
P) Air pressure reducing unit
Q) Feed cable
R) Torch fixed adapter
3.1 ASSEMBLY AND ARRANGEMENT
Unpack the unit and assemble the handle with the supplied
spanner. Place the unit in a properly ventilated and, if possible,
undusty room making sure that the air inlet and outlet from
cooling slots are not obstructed.
Fit torch on the unit as follows (see pict. 3):
This machine is manufactured according
to these international standards.
Article number with serial number must
appear on any requests concerning the
machine.
Three-phase static frequency converter -
transformer-rectifier.
Dropping characteristic.
Plasma arc cutting.
Secondary no-load voltage.
Duty factor percentage. The duty-factor
expresses the percentage of 10 minutes
in which the welding machine can operate
at a determined current, without over
heating.
Welding current.
Secondary voltage with welding current I
Nominal supply voltage.
Three-phase supply 50 or 60Hz.
Absorbed current at the corresponding
welding current I .
2
Grade of protection of frame. Grade 3 as
a second number means that this unit is fit
to work outside under the rain
Fit to work in high - risk areas.
2