Connecting An Optional Spool Gun; Setting Gun Polarity For Wire Type - Miller Electric Millermatic 212 Owner's Manual

4-6. Connecting An Optional Spool Gun

4-7. Setting Gun Polarity For Wire Type

Wire Drive
Assembly Lead
+
Shown as shipped − Electrode Positive (DCEP): For
solid steel, stainless steel, aluminum, or flux core with
gas wires (GMAW).
Electrode Negative (DCEN): Reverse lead connections
at terminals from that shown above for gasless flux core
wires (FCAW). Drive assembly becomes negative.
OM-232 384 Page 14
.
A complete Parts List is available at www.MillerWelds.com
4
3
Changing Polarity
Work Clamp Lead
D
-
Positive Terminal Negative Terminal
1
2
1
D
1 Barbed Fitting
.
If spool gun gas hose is
equipped with a pre-installed
barbed fitting, cut off fitting from
end of hose.
Connect spool gun gas hose to
barbed fitting.
2 Gun Trigger Plug
Insert plug into receptacle marked
with spool gun symbol, and tighten
threaded collar.
3 Negative (−) Output Terminal
4 Positive (+) Output Terminal
Connect weld cable from spool gun
to positive output terminal.
Close door.
804 922-A
1 Polarity Changeover Label
Information
Always read and follow manufac-
ture's recommended polarity.
3/4, 11/16 in
Ref. 190 821-A