24
9
26
25
22
20
23
21
TM 9-4940-568-10
2-90
2-20. WELDER OPERATION (CONT).
(14)
Remove clip (20) and open tank safety cap (21) on argon tank (22).
(15)
Turn handle (23) counterclockwise and open valve fully to engage upper seal.
(16)
Close tank safety cap (21) and install clip (20).
(17)
Turn process selector switch (24) on ARC welder (9) to MIG middle position.
(18)
Position primary power switch (25), located on back of ARC welder (9) in the ON position.
(19)
Adjust argon regulator (26) to desired level. Refer to TC 9–237.
