Installing Gas Supply; Installing Wire Spool And Adjusting Hub Tension - Miller Millermatic 300 Owner's Manual

3-8. Installing Gas Supply

.
DO NOT use Argon/Mixed gas regulator/flowmeter
with CO shielding gas. See Parts List for optional
2
CO gas regulator/flowmeter.
2

3-9. Installing Wire Spool and Adjusting Hub Tension

OM-1321 Page 12
4
7
5
6
Rear Panel
When a slight force is needed to turn spool, tension is set.
Obtain gas cylinder and chain to
running gear, wall, or other
stationary support so cylinder
cannot fall and break off valve.
1
1
2
Remove cap, stand to side of
valve, and open valve slightly. Gas
flow blows dust and dirt from valve.
2
Close valve.
3
4
Install so face is vertical.
3
5
6
Connect customer supplied gas
Argon Gas Or
hose between regulator/flowmeter
Mixed Gas
gas hose connection, and fitting on
rear of welding power source.
7
Typical flow rate is 20 cfh (cubic
feet per
manufacturer's
flow rate.
Use compression spring with
8 in (200 mm) spools.
Cap
Cylinder Valve
Cylinder
Regulator/Flowmeter
Regulator/Flowmeter Gas
Hose Connection
Welding Power Source Gas
Hose Connection
Flow Adjust
hour). Check wire
recommended
Tools Needed:
1-1/8, 5/8 in
802 028-A / Ref. 801 768-C
Tools Needed:
15/16 in
072573-B