OM-174 470 Page 3
2-3.
Connecting Input Power
Connect unit to a properly grounded receptacle of a 20 ampere individual branch circuit protected by time-delay fuses
or circuit breakers. Select an extension cord of 12 AWG for up to 75 ft (23 m) or 10 AWG for up to 140 ft (46 m).
2-4.
Gun Polarity For Wire Type
WARNING
ELECTRIC SHOCK can kill.
•
Do not touch live electrical parts.
•
Turn Off welding power source, and disconnect input power before inspecting or installing.
swarn1.1 2/93
1
Polarity Changeover Label
2
Polarity Jumper Links
Always read and follow welding
wire manufacturer’s recommended
polarity.
Close door.
Ref. ST-155 506–A
Tools Needed:
3/8 in
STRAIGHT
POLARITY
DCEN
REVERSE
POLARITY
DCEP
GUN POLARITY CHANGEOVER
For Flux
Cored Wires
(FCAW
Process)
For Solid
Steel Or
Wires
(GMAW)
S-116 599
Aluminum
Process)
1
2
Figure 2-3. Gun Polarity Connections
2-5.
Installing Welding Gun
1
Gun Securing Nut
2
Drive Assembly
3
Gun End
Loosen securing nut. Insert end
through front panel opening until it
bottoms against drive assembly.
Tighten nut.
4
Gun Trigger Plug
Insert plug into receptacle, and
tighten threaded collar.
Close door.
Ref. ST-155 506-A
Tools Needed:
5/16 in
2
1
4
3
Figure 2-4. Gun Connections
