Aqua Lung DSIS, Technical Manual

Page: 11 / 24

11
23. Install o-rings (15), onto
the grooves located on
either side of the center
hole of the swivel relief plug
(17d). Install o-ring (14) onto
the threaded end of the
swivel relief plug.
21. Place a small amount of
Christo-Lube onto the threads
of the relief valve screw (17a).
Use your fingers to install the
relief valve screw onto the
swivel relief plug (17d) until
hand tight.
22.
Hold the swivel relief
plug (17d) with a 9/16"
wrench. Using a 5 mm hex
bit socket and inch pound
torque wrench, torque the
relief valve screw (17a) to
a value of 45 in-lbs (5.1
Nm).
SWIVEL RELIEF TEST PROCEDURE
25. Increase the MP on the first stage regulator to 170 +/- 5 PSI
(11.7 +/- 0.3 BAR). During this time the MP should remain stable
and no air should leak past the relief holes on the swivel relief
plug (17). Increase the MP on the first stage to 205 +/- 5 PSI (14.1
+/- 0.3 BAR). The swivel relief plug can start venting air above 175
PSI (12 BAR) and must vent air by 210 PSI (14 BAR) in order to
pass this testing procedure. Turn off the supply cylinder and open
the bleed valve on the test gauge to depressurize the system.
Remove the swivel relief plug and MP hose assembly from the
first stage. Remove the QD adapter and test gauge from the MP
hose after testing has been completed.
26. Pass the threaded end of the swivel relief plug assembly
(17) through the swivel on the MP hose (13), followed by the
spacer (12). Make sure that both o-rings (15) are covered by
the hose swivel. Thread the swivel relief plug assembly into
the open port on the first stage body (32). Using a 9/16" deep
socket and inch pound torque wrench, torque the relief plug
swivel (17d) to a value of 60 in-lbs (6.8 Nm).
24.
Install the swivel relief plug assembly and MP hose (13) into
a MP port on a regulator first stage regulator that is adjusted to
a MP of 140 +/- 5 PSI (9.6 +/- 0.3 BAR). Attach the QD adapter
and test gauge to the end of the MP hose. Connect the regula-
tor first stage to a supply cylinder filled to 3000 PSI (207 BAR).
Slightly open the bleed valve on the test gauge and slowly turn
on the supply cylinder. Close the bleed valve and verify the MP is
stable. Cycle the bleed valve on the test gauge, let the regulator
stand for 30 seconds and re-check the MP after each adjustment.
NOTE: This test will require the use of a first stage regulator
with adjustable MP capability, such as the Conshelf XIV.
CAUTION: The relief valve screw (17a) is under spring
tension. Use caution when assembling.