Cebora MIG 5002 Synergic Manual De Instrucciones página 11

shows the meters per minute set on the knob B on the wire
feeder remote control; during welding it displays the current.
This remains in the instrument memory after welding, until
new parameters or functions are selected.
In synergic mode, the instrument automatically shows the
programmed meters per minute before welding; it shows the
current during welding, which remains in the instrument's
memory until new parameters or functions are selected.
LED Y
This LED lights when the thermostat interrupts welding
machine operation when the cooling unit is in use and is tur-
ned off, or the pressure switch signals that coolant fluid is
low, or when the mobile panel of the wire feeder is opened.
LED Z
This LED indicates that the machine is on.
SELECTOR SWITCH J
Turns the machine on and off, and serves to change the
supply voltage. To change the voltage, turn the disc loca-
ted under the knob (see figure). Always make sure that
the supply voltage matches the one shown on the front
panel of the machine.
SOCKET AA
Socket for connecting the mass cable terminal.
4.2 CONTROLS ON THE REAR PANEL.
SOCKET AC
Sockets for connecting the power source/wire feeder con-
nection.
To maximize carbon steel welding, we recommend using the
central outlet of the impedance
To maximize aluminum and stainless steel welding, we
recommend using the third impedance outlet
.
.
CONNECTOR AD
This connects to the 14-pin connector on the power sour-
ce/wire feeder connection art.1444 or 1447.
SOCKET AE
This socket connects to the safety device on the cooling
unit.
SOCKET AF (230V)
This socket connects to the cooling unit. Maximum available
power 440W.
KNOB AG
Adjusts the length of the wire protruding from the torch after
welding ends: "BURN BACK".
AH CONNECTOR (art. 508 only)
This connects to the 10-pin connector on the power sour-
ce/wire feeder connection art.1447.
KNOB AI (art. 508 only)
Adjust the wire speed before the wire blocks the workpiece
and lights the welding arc.
This function improves starts by preventing the wire from
sticking at the start of the weld. Turning the knob clockwise
increases the initial speed from a minimum of 10% to a
maximum of 100% of the set value for welding.
5 WELDING
5.1 THE MACHINE IS READY TO WELD.
• Connect the mass clip to the workpiece.
• Set the switch J to the selected voltage.
• Remove the tapered gas nozzle by turning it clockwise.
• Unscrew the contact tip.
• Press the torch trigger to move the wire forward until it
comes out of the torch.
CAUTION: Keep your face away from the gun tube assem-
bly while the wire is coming out.
• Screw the contact tip back on, making sure that the hole
diameter is the same as that of the wire used.
Slide the tapered gas nozzle back on, again turning it
clockwise.
• Open the gas cylinder and adjust the flow gauge to
approximately 8/10 lt./min.
• Make sure that the gas used is compatible with the mate-
rial to be welded.
5.2 WELDING CARBON STEEL.
In order to weld these materials you must:
1) Use a welding gas with a binary composition, usually
AR/CO2 with percentages ranging from 75 to 80% Argon
and 25 to 20% CO2, or ternary compositions such as
AR/CO2/O2.
These gases create heat during welding, and the bead will
be firmly embedded and attractive, while penetration will be
relatively low.
Using carbon dioxide as a protection gas will give a narrow,
penetrated bead, but the ionization of the gas will affect the
stability of the arc.
2) Use a welding wire of the same quality as the steel to be
welded.
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