TM 5-4220-231-14&P 2-1   d.   Chamber  Reducing  Station  (CRS)  Controls and  Indicators  (Refer to  Figure 2-4). INDEX NAME ID POSITION FUNCTION 1 PRIMARY HP   IN AHPV601 OPEN CCW ALLOWS HP   AIR   TO   BE SUPPLIED FROM    THE DASS TO   PRIMARY REGULATOR AND   THE DOME LOADER 2 SECONDARY HP AHPV606 OPEN CCW ALLOWS HP   AIR   TO   BE IN SUPPLIED FROM    THE DASS TO   SECONDARY REGULATOR 3 LP   IN  PRIMARY ALPV612 OPEN CCW ALLOWS LP   AIR  TO    FLOW SUPPLY FROM    PRIMARY LP COMPRESSOR STORAGE TANK 4 LP   IN ALPV613 OPEN CCW ALLOWS LP  AIR  TO   FLOW SECONDARY FROM    SECONDARY LP SUPPLY COMPRESSOR STORAGE TANK 5 LP   SUPPLY OUT ALPV61 0 OPEN CCW ACTIVATES FLOW    OF BREATHING AIR   TO RECOMPRESSION CHAMBER 6 PRIMARY HP AHPV602 INCREASE LP-CW HANDLOADED REGULATOR DECREASE LP-CCW REGULATOR WHICH REDUCES PRIMARY HP   AIR TO   DESIRED OPERATING LP  PILOT    AIR   TO   THE DOME LOADER 7 SECONDARY HP AHPV607 INCREASE LP-CW HANDLOADED REGULATOR DECREASE LP-CCW REGULATOR WHICH REDUCES SECONDARY HP AIR   TO   DESIRED OPERATING LP 8 HP   IN  GAGE AHPG615 0  -   6000 PSIG INDICATES HP   AIR   SUPPLY FROM    THE    AIR   STORAGE UNIT 9 LP  OUT    GAGE ALPG616 0   -   500   PSIG INDICATES LP   AIR   BEING SUPPLIED TO   MANIFOLD 10 BLEED VALVE ALPV608 OPEN CCW ALLOWS LP   AIR   PRESSURE BE  BLED   OFF FROM THE    CRS Change    2 2-11