JFD Divex SLS Mk IV, Operation And Maintenance Manual

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OM131 13
P1939-OM-131 R11 Chapter 2
C
HAPTER
2 - T
ECHNICAL
D
ESCRIPTION
C
ONTENTS
Page
2.1 System Description ....................................................................................................................... 14
2.2 Backpack Housing Assembly ....................................................................................................... 16
2.2.1 Main backpack housing ................................................................................................................ 17
2.2.2 Scrubber door assembly ............................................................................................................... 17
2.2.3 CO2 scrubber canister .................................................................................................................. 17
2.2.4 CO2 scrubber canister lift mechanism .......................................................................................... 17
2.2.5 Thermal regenerator ..................................................................................................................... 17
2.2.6 Penetrators ................................................................................................................................... 17
2.3 Gas Injection System .................................................................................................................... 18
2.3.1 Gas cylinders and manifold .......................................................................................................... 19
2.3.2 Charging point / check valve ......................................................................................................... 19
2.3.3 Burst disc assembly ...................................................................................................................... 19
2.3.4 Two stage regulator ...................................................................................................................... 19
2.3.5 Injection orifice .............................................................................................................................. 21
2.3.6 Single stage regulator ................................................................................................................... 21
2.3.7 Demand regulator ......................................................................................................................... 22
2.3.8 Overpressure indicator ................................................................................................................. 24
2.4 Harness and counterlungs ............................................................................................................ 24
2.4.1 Harness ........................................................................................................................................ 24
2.4.2 Counterlungs and enclosures ....................................................................................................... 25
2.4.3 Actuation cable assembly ............................................................................................................. 25
2.5 Hose Connections and Interfaces ................................................................................................. 27
2.5.1 Inhale / exhale hoses .................................................................................................................... 28
2.5.2 Hot water system .......................................................................................................................... 28