OM131
67
P1939-OM-131 R11
Chapter 4
2.
Remove the gas cylinders for inspection by a competent person, as follows:
a.
Remove the single stage regulator and two stage regulator from the SLS System Backpack
(section 4.3.4.2 and section 4.3.4.3).
b.
Remove the banjo bolt from the demand regulator supply manifold.
c.
Unscrew the four retaining bolts (Fig 4.5, Items 2 and 3).
d.
Withdraw the cylinders and manifold from the SLS System Backpack.
e.
Loosen Jubilee clip.
f.
Unscrew each bottle from its fitting.
g.
Lightly lubricate new O-rings before re-assembly using an oxygen compatible lubricant (e.g.
Christo-lube fluorinated grease - Divex Part No. SM034).
3.
If no further maintenance is to be performed, repack the SLS System Backpack ready for
diving as follows:
a.
Tighten brackets and Jubilee clip.
b.
Reload the actuation cable assembly (section 3.4.4).
c.
Recharge the gas cylinders with the appropriate heliox gas mix for the diving depth (section
3.1.1).
d.
Install a refilled CO
2
scrubber canister and check the door seal (section 3.1.2 and section
3.1.3).
e.
Replace and secure the outer door.
4.3.4
Annual maintenance procedures
4.3.4.1 Visual inspection and testing of gas cylinders and HP pipework
1.
All high pressure pipework and gas cylinders should be inspected and tested by an
authorised test house.
4.3.4.2 Strip down and service of two stage regulator
1.
Remove the two stage regulator from the SLS System Backpack as follows:
a.
Ensure that the gas cylinders are empty by activating the SLS System and pressing down on
the demand valve diaphragm with the demand valve activating tool (Divex Part No. M2922)
from the Tool and Test Kit.
b.
Disconnect the pipework from the main supply penetrator.
c.
Cut cable tie holding two stage regulator to the manifold pipework.
d.
Disconnect gas supply pipework, from the gas cylinders, at the regulator inlet banjo.
e.
Remove the single stage regulator and two stage regulator complete with the interconnecting
pipework and withdraw to the extent that the retaining screws for the actuating sleeve can be
reached.
f.
Remove the screws from the actuating sleeve block.
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...