OM-187 926 Page 11
3-2. Installing Welding Gun
Ref. ST-802 024
1
Drive Assembly
2
Gun Securing Thumbscrew
3
Gun End
Loosen thumbscrew. Insert gun
end through opening until it bottoms
against drive assembly. Tighten
thumbscrew.
4
Gun Trigger Leads
Insert leads, one at a time, through
small grommet on front panel. Con-
nect female friction terminals to
matching male terminals in unit.
Polarity is not important.
Close door.
4
1
2
3
3-3. Changing Polarity
Set for Electrode Positive
(DCEP) for solid steel or alumi-
num wires (GTAW process).
1
Drive Assembly
2
Positive (+) Output Terminal
3
Wire Drive Assembly Lead
4
Negative (
−
) Output Terminal
5
Work Clamp Lead
For Electrode Negative (DCEN)
for flux cored wires (FCAW pro-
cess). Drive assembly becomes
negative.
Always read and follow wire
manufacturer’s recommended
polarity.
Close door.
2
1
3
4
Ref. ST-802 024
5