Miller Electric Millermatic 212 Auto-Set, Owner'S Manual, Page: 22 / 52

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A complete Parts List is available at www.MillerWelds.com
OM-238 118 Page 18
4-10. Installing Gas Supply
Ref. 805 244-A / 804 654-A
Tools Needed:
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
Install so face is vertical.
5
Regulator/Flowmeter Gas
Hose Connection
6 Welding Power Source Gas
Hose Connection
Connect customer supplied gas
hose between regulator/flowmeter
gas hose connection, and fitting on
rear of welding power source.
7
Flow Adjust
Typical flow rate is 25 to 35 cfh
(cubic feet per hour). Check wire
manufacturer’s recommended
flow rate.
8
CO2 Adapter (Customer
Supplied)
9 O-Ring (Customer Supplied)
Install adapter with O-ring between
regulator/flowmeter and CO
2
cylinder.
1-1/8, 5/8 in.
1
2
3
7
Rear Panel
6
4
5
1
2
3
8 9
Argon Gas Or Mixed Gas
CO
2
Gas