Gas Connections; Tig Hf Impulse/ Lift-Arc Dcen (Direct Current Electrode Negative) Connections; Stick Dcep (Direct Current Electrode Positive) Connections - Miller Maxstar 300 LX Owner's Manual

4-11. Gas Connections

4-12. TIG HF Impulse/ Lift-Arc DCEN (Direct Current Electrode Negative) Connections

Tools Needed:
11/16 in, (21 mm for CE units)
1
2

4-13. Stick DCEP (Direct Current Electrode Positive) Connections

OM-2222 Page 20
4
1
4
3
1
2
3
2
Tools Needed:
5
3
1 Gas Fitting
Fittings have 5/8-18 right-hand
threads.
2 Cylinder Valve
Open valve slightly so gas flow
blows dirt from valve. Close valve.
3 Regulator/Flowmeter
4 Flow Adjust
Typical flow rate is 15 cfh (cubic feet
per hour).
Connect customer supplied gas
hose between regulator/flowmeter
and gas fitting on rear of unit.
5/8, 1-1/8 in
Y Turn off power before mak-
ing connections.
1 Negative (−) Weld Output
Terminal
Connect TIG torch to negative weld
output terminal.
2 Gas Out Connection
Connect torch gas hose to gas out
fitting.
3 Positive (+) Weld Output
Terminal
Connect work lead to positive weld
output terminal.
4 Remote 14 Receptacle
Connect desired remote control to
Remote 14 receptacle.
5 Gas In Connection
Connect gas hose from gas supply
to gas in fitting.
Ref. ST-802 650-A
Y Turn off power before mak-
ing connections.
1 Negative (−) Weld Output
Terminal
Connect work lead to negative weld
output terminal.
2 Positive (+) Weld Output
Terminal
Connect electrode holder to posi-
tive weld output terminal.
3 Remote 14 Receptacle
If desired, connect remote control
to Remote 14 receptacle (see Sec-
tion 4-7).
Ref. ST-802 650
ST-801 866