Connecting The Welding Machine To The Utility Line; Usage Norms; Mig-Mag Welding - CEA CONVEX 330 basic Manual De Instrucciones

• Connect up the wire-feeder/generator interconnection cable.
• Connect up the welding cables.
Instructions for fitting the individual components / optional extras
are contained in the relevant packaging.
Connecting the welding
machine to the utility line
Connection of the machine to the user line (electrical current)
must be performed by qualified personnel.
Before connecting the welder to the electrical supply, check
that the machine's plate rating corresponds to the supply volt-
age and frequency and that the line switch of the welder is in
the "O" position.
Use the welder's own plug to connect it up to the main power sup-
ply. 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 mak-
ing the "GROUND" connection.
Connect a suitable load of normalised plug (3P+T) to the pow-
er cable and provide for an electrical socket complete with
fuses or an automatic switch. The ground terminal must be
connected to the ground conducting wire (YELLOW-GREEN)
of the supply.
Table 2 shows the capacity values that are recommended for fus-
es in the line with delays.
NOTE: Any extensions to the power cable must be of a suitable
diameter, and absolutely not of a smaller diameter than the spe-
cial cable supplied with the machine.

Usage norms

CONTROL APPARATUS (Fig. A)
Pos. 1 Fast coupling straight polarity.
Pos. 2 Fast coupling reverse polarity.
Pos. 3 Supply switch. In the "O" position the welder is off.
Pos. 4 Connector for connecting the interconnection cable or
auxiliary welding controls.
Pos. 5 Fast coupling reverse polarity.
Pos. 6 Connector for connecting the cooling system.
Pos. 7 Welder cable.

MIG-MAG welding

To begin MIG-MAG welding, carry out the following tasks (with the
machine switched off).
1 - Connecting the gas hose and torch (Fig. B1-B2)
• Connect the gas hose to the pressure reducer fitted on the cyl-
inder beforehand.
• Screw the torch onto the centralised connection on the front pan-
el of the feeder and connect the feed (blue) and return (red) wa-
ter hoses for cooling the torch to the respective (blue and red)
rapid couplings on the front panel of the feeder.
2A - Connecting the cables - Welding with a POSITIVE
POLE TORCH (Fig. B1)
1) The feeder - generator connecting cable is used to connect
the welding machine to the feeder.
WARNING: Do not disconnect the wire-feeder until the ma-
chine has been switched off.
Model
Input power @ I Max
2
Delayed fuse (I @ 60%)
2
Duty cycle @ X% (40°C)
Mains cable
Length
Section
Ground cable
FIG. A
Connect up the interconnection cables (power cable, ancillary
wiring and gas tube) to the special attachments and couplings
shown in Fig. B1.
The delivery (blue coloured) and return (red coloured) water
tubes, used for cooling the torch of the welding machine, are
part of the interconnection cable and should be connected as
follows:
• Interconnection cable on generator side: connect up tubes
to their rapid couplings (blue and red coloured) at the back
of the coolant system.
CONVEX 330
basic
kVA 18,8
A 25
A 330 (40%)
m 4
2
mm 4 × 2,5
mm 2 50
3
1
7
5
6
CONVEX 400 CONVEX 500
basic
MIG-MAG welding
18,6
25
400 (50%) 500 (50%)
4,5
4 × 4
50
2
3
4
Table 2
basic
25,6
35
4,5
4 × 6
70