Installing Welding Gun; Setting Gun Polarity - Miller MW225 Owner's Manual

2-6. Installing Welding Gun

2-7. Setting Gun Polarity

Tools Needed:
3/4, 11/16 in
OM-189 482 Page 12
Wire Drive Assembly Lead
To Positive (+) Output Terminal
Work Clamp Lead To
Negative (−) Output Terminal
GUN POLARITY
CHANGEOVER CONNECTIONS
Reverse Lead Connections − For Electrode
Negative (DCEN) For Flux Cored Wires
(FCAW Process). Drive Assembly
Becomes Negative
1
2
3
Loosen securing knob. Insert gun
end through opening until it bottoms
1
against drive assembly. Tighten
nut.
4
Insert plug into receptacle, and
tighten threaded collar.
2
3
Close door.
4
1
Always read and follow manufac-
ture's recommended polarity.
1
S-144 449-D
Drive Assembly
Gun Securing Knob
Gun End
Gun Trigger Plug
Ref. ST-801 936
Polarity Changeover Label
(Located Near Drive
Assembly)