ESAB fabricator 141i Service Manual page 23

6. MIG Gun Polarity Lead
The polarity lead is used to connect the MIG Gun to the appropriate positive or negative output terminal (allowing polarity reversal
for different welding applications). In general, the polarity lead should be connected in to the positive welding terminal (+) when
using steel, stainless steel or aluminum electrode wire. When using flux cored (gasless) wire, the polarity lead is generally con-
nected to the negative welding terminal (-). If in doubt, consult the manufacturer of the electrode wire for the correct polarity. It is
essential, however, that the Dinse adapter and male plug are inserted and turned securely to achieve a sound electrical connection.
CAUTION
!
Loose welding terminal connections can cause overheating and result in the male plug be-
ing fused in the Dinse connector.
7. Negative Welding Output Terminal
The negative welding terminal is used to connect the welding output of the Power Source to the appropriate welding accessory
such as the MIG Gun (via the MIG Gun polarity lead), TIG Torch or work lead. Negative welding current flows to the Power Source
via 25mm Dinse style connector. It is essential, however, that the Dinse adapter and male plug are inserted and turned securely
to achieve a sound electrical connection.
CAUTION
!
Loose welding terminal connections can cause overheating and result in the male plug be-
ing fused in the Dinse connector.
8. Remote Control and Spool Gun Socket
The 8 pin socket is used to connect the Fusion MIG Gun, remote control device or spool gun plug to the welding Power Source.
To make connections, align keyway, insert plug, and rotate threaded collar fully clockwise.
Art # A-10421_AC
Socket Pin
1 Spool gun motor (0V)
2
Trigger Switch Input
3
Trigger Switch Input
4
Spool gun motor (+24V DC)
5
5k ohm (maximum) connection to 5k ohm remote control potentiometer.
6
Zero ohm (minimum) connection to 5k ohm remote control potentiometer.
Wiper arm connection to 5k ohm potentiometer for the remote control of the Wirespeed in MIG mode.
7
Wiper arm connection to 5k ohm potentiometer for the remote control of the Amperage (Weld Current)
in LIFT TIG mode.
8
Wiper arm connection to 5k ohm remote control Volts MIG mode potentiometer.
Manual 0-5448
1
2
3
2 1
4
5 4 3
5
8 7 6
6
7
8
Figure 4-4: Remote Control Socket
Trigger Switch
Remote Volts in
W V
MIG (GMAW/FCAW)
Remote Wirespeed in MIG (GMAW/FCAW) mode
Remote Amps in LIFT TIG (GTAW) mode
Function
Table 4-1
4-3
ESAB FABRICATOR 141i
Negative
Spool Gun Motor
Positive
OPERATION