A complete Parts List is available at www.MillerWelds.com
OM-279299 Page 21
5-8. MIG Welding Connections
280401B / Ref. 275167A / 282987A
!
Turn off unit and disconnect input
power before making connections.
1
Positive Weld Output Receptacle
2
Negative Weld Output Receptacle
3
Wire Drive Assembly Cable
4
Work Clamp And Cable
Ensure all connections are tight.
5
Gun End
Connect gun end to drive assembly (see
Section 5-10).
6
Trigger Control Cable
7
Four Pin Trigger Control Cable
Receptacle
Route trigger control cable through MIG
gun hole.
Connect plug on end of cable to four pin
receptacle inside unit.
8
MIG Shielding Gas Connection
Connect supplied gas hose between regu-
lator/flowmeter gas hose connection and
fitting on rear of welding power source.
See Section 11-16 for gas selection.
MIG/FCAW-G
−
DCEP
(Direct Current Electrode Positive)
FCAW-S
−
DCEN
(Direct Current Electrode Negative)
1
4
3
2
4
3
2
8
1
6
7
5
5-9. Process/Polarity Table
Process
Polarity
Cable Connections
Wire Drive Assembly Cable
Work Cable
GMAW
−
Solid wire with shielding gas
DCEP
−
Reverse polarity
Connect to positive (+)
output receptacle
Connect to negative (
−
)
output receptacle
FCAW-S
−
Self-shielding wire
−
no
shielding gas
DCEN
−
Straight Polarity
Connect to negative (
−
)
output receptacle
Connect to positive (+)
output receptacle
FCAW-G
−
Flux-cored wire with shield-
ing gas
DCEP
−
Reverse Polarity
Connect to positive (+)
output receptacle
Connect to negative (
−
)
output receptacle
Содержание Millermatic 255
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