Hobart Welding Products 150 - Manual (Page 16)

OM-210 088 Page 12
SECTION 3 – INSTALLATION
3-1. 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
3-2. Changing Polarity
1 Lead Connections For Direct
Current Electrode Positive
(DCEP)
2 Lead Connections For Direct
Current Electrode Negative
(DCEN)
Always read and follow wire
manufacturer’s recommended po-
larity, and see Section 3-3.
Close door.
1
Ref. ST-802 024
2
3-3. Process/Polarity Table
Cable Connections
Process Polarity
Cable To Gun Cable To Work
GMAW – Soild wire with shield-
ing gas DCEP – Reverse polarity Connect to positive (+) out-
put terminal Connect to negative (–) output
terminal
FCAW – Self-shielding wire –
no shielding gas DCEN – Straight Polarity Connect to negative (–)
output terminal Connect to positive (+) output
terminal