Setting Gun Polarity For Wire Type; Installing Gas Supply - Hobart IronMan 240 Owner's Manual

5-6. Setting Gun Polarity For Wire Type

Changing Polarity
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.

5-7. Installing Gas Supply

Tools Needed:
1-1/8, 5/8 in.
.
A complete Parts List is available at www.HobartWelders.com
Work Clamp Lead
D
-
Positive Terminal Negative Terminal
7
5
D
1
2
3
4
Argon Gas Or Mixed Gas
8
9
CO Gas
2
6
Rear Panel
1 Polarity Changeover Label
Information
Always read and follow manufacture's
recommended polarity.
1
¾ in.
Obtain gas cylinder and chain to
running gear, wall, or other
stationary support so cylinder
cannot fall and break off valve.
1 Cap
2 Cylinder Valve
Remove cap, stand to side of
valve, and open valve slightly. Gas
flow blows dust and dirt from valve.
Close valve.
3 Cylinder
4 Regulator/Flowmeter
1
Install so face is vertical.
5 Regulator/Flowmeter Gas
Hose Connection
2
6 Welding Power Source Gas
Hose Connection
Connect customer supplied gas
3
hose between regulator/flowmeter
gas hose connection, and fitting on
rear of welding power source.
7 Flow Adjust
Typical flow rate is 25-45 cfh (cubic
feet per hour). Check
manufacturer's recommended
flow rate.
8 CO2 Adapter (Customer
Supplied)
9 O-Ring (Customer Supplied)
Install adapter with O-ring between
regulator/flowmeter and
cylinder.
Ref. 804654-A / Ref. 804912-A
OM-284833 Page 17
Ref. 190821-A
wire
CO
2