XS Scuba Airwave Octopus Service And Repair Manual - page 19
Service & Repair Manual
19
Copyright ©2008 XS Scuba
Flowbench Testing (optional)
The Subjective Breathing Test, combined with the Inter-
mediate Pressure Test, will sufficiently verify the regulator's
performance in most circumstances. As an additional test,
a Magnahelic flowbench can be used to verify the opening
effort, which should not exceed 1.5 – 2.0 column inches H
2
O
with the venturi switch turned counter-clockwise to the open
or "dive" position.
External Leak Test
After first stage reassembly and final adjustment of the
second stage has been completed, submerge the entire
regulator in a test tank of clean water while pressurized
with 2,500-3000 psi. Observe any bubbles arising from the
submerged regulator over a one minute period. The recom-
mended time is necessary due to slower bubble formation
that occurs in smaller leaks. Disassemble the regulator at
the source of the leak to check sealing surfaces, assembly
sequence and component positioning in order to correct the
problem(s).
NOTE: The location of extremely small leaks can best
be detected by applying a soap solution to the leak area.
Before disassembling to correct any leaks, rinse the
entire regulator thoroughly with fresh water and blow
out all residual moisture with filtered, low-pressure (25
psi) test gas. Refer to the Troubleshooting Guide.
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When the second stage has been adjusted and tested
according to the prescribed procedures, close the cylinder
valve completely and purge the second stage to depres-
surize the system. Loosen the yoke screw to remove the
first stage from the cylinder, and seal the dust cap over
the inlet. Disinfect the mouthpiece, and dry the regulator
completely with a clean towel. This completes the over-
haul service procedures for the AirWave regulator.