Connecting Shielding Gas Supply - Miller Multimatic 255 Owner's Manual

5-13. Connecting Shielding Gas Supply

1
2
3
Mixed Gas
1
2
3
CO Gas
2
8
TIG
wrench
crescent wrench
�
Complete Parts List is available at www.MillerWelds.com
9
10
4
5
7
6
1
3
Argon Gas
4
8
5
MIG
Ref. 804 654-A / 275168A / 280272C
Obtain gas cylinder and chain to running
gear, wall, or other stationary support so cyl-
inder 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 Regulator/Flowmeter so face is
vertical.
5 Regulator/Flowmeter
2
Connection
6 Welding Power Source CO
Gas Hose Connection
7 Welding Power Source Argon Gas Hose
Connection
Connect gas hose between regulator/flow-
meter gas hose connection, and the appro-
priate fitting for the gas type on rear of
welding power source.
8 Flow Adjust
Typical flow rate for shielding gas is 20 to
30 CFH (cubic feet per hour). Check wire
manufacturer's recommended flow rate.
9 CO Adapter (Customer Supplied)
2
10 O-Ring (Customer Supplied)
Install adapter with O-ring between regula-
tor/flowmeter and CO
Gas Hose
And Mixed
2
cylinder.
2
OM-278174 Page 27