TM 9-6920-430-14
(1) Be sure that the argon supply valve (1) is turned fully clockwise to the closed position.
Be sure that the INLET SHUTOFF valve (2), INLET BLEED valve (3), OUTLET SHUTOFF
valve (4), and OUTLET BLEED valve (5) are turned fully clockwise to the closed position. Open
access door on left side of GPU and make sure PROOF TEST SHUTOFF valve (6) is opened fully
counterclockwise.
Change 1
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