Connection To The Electrical Supply - CEA MATRIX 250 E TIG DC Manuel D'instructions

MATERIALS AND DISPOSAL
• These machines are
built with materials that
do not contain substan-
ces that are toxic or poi-
sonous to the operator.
• During the disposal
phase the machine should be disas-
sembled and its components should
be separated according to the type of
material they are made from.
HANDLING AND STOCKING
COMPRESSED GASES
Always avoid contact
between cables carrying
welding current and com-
pressed gases cylinder
and their storage
systems.
• Always close the valves on the com-
pressed gas cylinders when not in
use.
• The valves on Inert gas cylinder
should always be fully opened when in
use.
• The valves on flammable gases
should only be opened full turn so that
quick shut off con be mode in an
emergency.
• Care should be taken when moving
compressed gas cylinders to avoid
damage and accidents which could
result in injury.
• Do not attempt to refill compressed
gas cylinders, always use the correct
pressure reduction regulators and sui-
table base fined with the correct con-
nectors.
• For further information consult the
safety regulation governing the use of
welding gases.
Installation
The installation site for the system must
be carefully chosen in order to ensure its
satisfactory and safe use.
The user is responsible for the installa-
tion and use of the system in accor-
dance with the producer's instructions
contained in this manual.
Before installing the system the user
must take into consideration the poten-
Model
I Max nominal 35% (*)
2
Installation power
Nominal current "gl" class fuses
Supply connection cable
Length
Section
Earth cable
(*) Service factor
tial electromagnetic problems in the
work area. In particular, we suggest that
you should avoid installing the system
close to :
• signalling, control and telephone
cables
• radio and television transmitters and
receivers
• computers and control and measure-
ment instruments
• security and protection instruments
Persons fitted with pace-makers, hea-
ring aids and similar equipment must
consult their doctor before going near a
machine in operation. The equipment's
installation environment must comply to
the protection level of the frame i.e. IP
23 (IEC 529 publication). This system is
cooled by means of the forced circula-
tion of air, and must therefore be placed
in such a way that the air may be easily
sucked in and expelled through the
apertures made in the frame.
Connection to the
electrical supply
Before connecting the welder to the
electrical supply, check that the
machine's plate rating corresponds
to the supply voltage and frequency
and that the line switch of the welder
is in the "O" position. Only connect
the welder to power supplies with
grounded neutral.
Use the welder's own plug to connect it
up to the main power supply. Proceed as
follows if you have to replace the plug:
• 3 conducting wires are needed for
connecting the machine to the supply
• the fourth, which is YELLOW GREEN
in colour is used for making the
"EARTH" connection.
Connect a suitable load of normali-
sed plug (3p+t) to the power cable
and provide for an electrical socket
complete with fuses or an automatic
switch. The earth terminal must be
connected to the earth conducting
wire (YELLOW-GREEN) of the supply.
Table 2 shows the recommended load
values for retardant supply fuses chosen
according to the maximum nominal cur-
MATRIX 250 E
A
kVA
A
m
2
mm
2
mm
10
rent supplied to the welder and the
nominal supply voltage.
NOTE 1: Any extensions to the power
cable must be of a suitable diameter,
and absolutely not of a smaller diameter
than the special cable supplied with the
machine.
NOTE 2: It is not advisable to plug up
the welder to motor-driven generators,
as they are known to supply an unstable
voltage.
APPARECCHI DI COMANDO E
CONTROLLO (fig. A)
Pos. 1
Pos. 2
Pos. 3
Pos. 4
Pos. 5
Pos. 6
Pos. 7
Pos. 8
Table 2
Pos. 9
250
7
10
3
1,5
35
Norme d'uso
Supply switch. In the "O" posi-
tion the welder is off.
Rapid connection attachments
of the electrode holder and
earth holder gripper.
6 pole remote control con-
nector.
Three welding process selector
switch:
• MMA: welding of coated
electrodes: rutile, basic, cel-
lulosic, cast iron and alumi-
nium;
• MMA CrNi: welding of stain-
less steel. This special dyna-
mic characteristic enables
welding with a smooth and
very stable arc for high qua-
lity welding;
• TIG: by the innovative "lift"
mode arc striking with ther-
mic control (TCS), quick and
precise striking is achieved,
by minimising any tungsten
inclusion and avoiding any
incision onto the workpiece.
Welding current electronic
adjustment.
Adjustable "arc force" through
potentiometer to choose the
best welding arc dynamic cha-
racteristic.
THERMOSTAT yellow signal
light. When this light comes it
means that the overheat cut-off
has come on, because the
work cycle limit has been exce-
eded. Wait for a few minutes
before starting to weld again.
Digital ammeter (optional) with
welding current presetting.
SUPPLY green signal light. If
this light comes on it means
that the welder is on and ready
for operation.