CEA MATRIX 250 AC/DC Manual De Instrucciones página 19

Fig. C
TIG WELDING (fig. D)
• Connect the gas pipe at the rear of the machine to the Argon
gas cylinder then open it.
• When the machine is switched off connect the earth cable to
the quick coupling marked + (positive).
• Connect the relative earth clamp to the piece to be welded
or nearby ensuring that the area is free from rust, paint,
grease, ecc..
• When the machine is switched off connect the earth cable to
the quick coupling marked - (negative).
• Connect the torch gas tube to the connection.
• Insert the torch button connector in the 6 poles holder.
Fig. D
PART TO BE WELDED
The part to be welded must always be connected to earth in
order to reduce electromagnetic emission. Much attention
must be afforded so that the earth connection of the part to be
welded does not increase the risk of accident to the user or the
risk of damage to other electric equipment.
When it is necessary to connect the part to be welded to earth,
you should make a direct connection between the part and the
earth shaft. In those countries in which such a connection is
not allowed, connect the part to be welded to earth using suit-
able capacitors, in compliance with the national regulations.
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