OM131
15
P1939-OM-131 R11
Chapter 2
Because the counterlungs are tightly packed, there is very little gas available for the diver to inhale
after activation, hence a demand valve situated on top of the SLS System Backpack supplies the
gas for his first breath. Then, as the diver exhales, the counterlungs are filled and from then on the
SLS System functions in its semi-closed circuit mode. There are three gas cylinders each of 1.18
litres water capacity which together provide 1060 litres of gas when charged to 300 bar (See
Chapter 3) for complete details of required gas mixes, charging pressures etc.).
The SLS System Mk IV is deliberately weighted slightly negatively buoyant because most divers find
that, with a hot water suit, a small mount of extra weight is required to control buoyancy. The
Backpack harness has two weight pockets fitted in case additional weight is desired.
Fig 2.1 SLS System Mk IV (Schematic)
Summary of Contents for Divex SLS Mk IV
Page 2: ...Intentionally Blank...
Page 4: ...ii OM131 Approval Sheet P1939 OM 131 R11 Intentionally Blank...
Page 6: ...iv OM131 Preface P1939 OM 131 R11 Intentionally Blank...
Page 8: ...vi OM131 List of Abbreviations P1939 OM 131 R11 Intentionally Blank...
Page 10: ...viii OM131 Warnings P1939 OM 131 R11 Intentionally Blank...
Page 12: ...x OM131 Table of Contents P1939 OM 131 R11 Intentionally Blank...
Page 15: ...OM131 3 P1939 OM 131 R11 Chapter 1 Fig 1 1 SLS System Mk IV...
Page 16: ...4 OM131 Chapter 1 P1939 OM 131 R11 Fig 1 2 SLS system layout...
Page 32: ...20 OM131 Chapter 2 P1939 OM 131 R11 Fig 2 4 Two stage regulator Fig 2 5 Spool valve...
Page 42: ...30 OM131 Chapter 2 P1939 OM 131 R11 Intentionally Blank...
Page 53: ...OM131 41 P1939 OM 131 R11 Chapter 3 Fig 3 3 Hose Lanyards...
Page 54: ...42 OM131 Chapter 3 P1939 OM 131 R11 Fig 3 4 SLS System Mk IV Rear View...
Page 55: ...OM131 43 P1939 OM 131 R11 Chapter 3 Fig 3 5 SLS System Mk IV Front View...
Page 64: ...52 OM131 Chapter 3 P1939 OM 131 R11 Intentionally Blank...
Page 82: ...70 OM131 Chapter 4 P1939 OM 131 R11 Fig 4 7 Annual Maintenance Two Stage Regulator...
Page 86: ...74 OM131 Chapter 4 P1939 OM 131 R11 Fig 4 8 Annual Maintenance Single Stage Regulator...
Page 109: ...OM131 97 P1939 OM 131 R11 Chapter 5 Fig 5 2 Backpack Assembly Drawing P1939229S1...
Page 111: ...OM131 99 P1939 OM 131 R11 Chapter 5 Fig 5 4 Scrubber Housing Assembly Drawing P1939131S1...
Page 118: ...106 OM131 Chapter 5 P1939 OM 131 R11 Fig 5 9 SLS System Mk IV Gas Schematic Drawing P193940S1...
Page 123: ...OM131 111 P1939 OM 131 R11 Chapter 5 Fig 5 14 SLS System Mk IV Bottle Assembly...