TM 9-6920-430-14
(2) Close the gas supply valve (5) fully clockwise.
(3) Slowly open the INLET BLEED valve (6) 1/4 to one turn counterclockwise to allow
pressure to bleed off slowly. The pressure on the INLET PRESSURE gage (7) will slowly bleed
down to 500 psig in approximately 2 to 4 minutes. Close the INLET BLEED valve (6) when
pressure has reached 500 psig.
(4) Close the INLET SHUTOFF (8) and OUTLET SHUTOFF (9) valves fully clockwise.
(5) Slowly open the OUTLET BLEED valve (10) counterclockwise. The pressure will be
bled from the flexible hoses. The digital readout (11) should read less than 100 psig. After all gas
has escaped, close the OUTLET BLEED valve (10).
(6) Open the PROOF TEST SHUTOFF valve (12) fully counterclockwise. This valve
must be opened for normal operation of the CPU. Open the INLET SHUTOFF (8) and INLET
BLEED (6) valves two turns counterclockwise until gas has escaped.
(7) Disconnect the flexible hose at the PROOF TEST GAS INLET (13) using a 9/16-inch
wrench to loosen.
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