Second Stage Adjustment And Testing Procedures; Second Stage Without Port Plug (Old Version) - Aqua Lung CONSHELF XIV Technical Manual

Conshelf (Dry kit)
1c
To complete the environmental conversion of a standard
Conshelf XIV or reinstallation of environmental components
on the Dry Kit model, perform the following procedure while the
regulator is pressurized.
CauTION: Performing this procedure while the first stage
is unpressurized results in incorrect Mp pressure and
excessive strain on the secondary diaphragm.
i
While the regulator is still pressurized with 3000 PSI (206 BAR),
insert the stem of the piston (41) into the hex opening of the ad-
justment screw (40).
ii
Lay the external diaphragm (43) inside the external diaphragm
retainer (44), and tap it down past the threads to ensure that it
seats evenly against the sealing surface.
iii
Mate the external diaphragm retainer into the spring
retainer (38), and apply the retainer wrench (PN 081247) to
tighten it until completely snug.
iv
Cycle the regulator to ensure that the MP has not changed. If
necessary, depressurize the regulator and disassemble the
environmental kit to reset the MP.
v
When the regulator is depressurized, the secondary diaphragm
will appear to be "sucked" in. When the regulator is pressurized,
the secondary diaphragm returns to its normal shape.
vi
Recheck the MP to confirm there has been no change.
Not pressurized
pressurized
Second Stage adjustment and Testing
procedures
Note: Performing the second stage adjustment and testing, requires
the installation of the diaphragm, box top and ring clamp (8, 4 & 5). To
do this, proceed as follows.

Second Stage without port plug (old version)

1
Place the diaphragm (8), metal plate facing the lever (20) onto
the seating shoulder of the box bottom (16).
2
Place the box top (4) over the diaphragm. While holding the box
top firmly in place, pressurize the regulator. There should be no
audible leaks detected. While still holding the box top firmly in place,
breathe from the mouthpiece several times and listen once again for
any leaks. Next press the purge button several times, once again
listen for any audible leaks. If leaks are detected, adjustment of the
lever (20) will be required.
3
To adjust the lever (20), use the following method:
Remove the box top (4) and the diaphragm (8). Hold the poppet
(14) stem with a small bent-shank screwdriver and turn the locknut
(22) counterclockwise with a 1/4" open end wrench to stop a leak.
Adjust only far enough to correct the leakage problem. After the
adjustment is complete, repeat STEP 2.
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