AirWave Octo
18
AirWave Octo Service and Repair Manual
slightly counter-clockwise while lightly depressing
the purge cover to prevent wear on the seat. Do not
adjust any further than is needed to establish a slight
leak.
6. Hold the drive of the Inline Adjustment Tool engaged with
the orifice. While lightly depressing the purge cover, turn
the orifice slightly clockwise a very small fraction of a turn.
Pause after each adjustment to listen, and be careful to
avoid over-adjusting beyond the point that the leak has
stopped. When the leak has stopped, purge the second
stage again to ensure that it does not return. Observe
the IP Test Gauge while purging to verify that it indicates
a stable intermediate pressure after each cycle, with no
creep or fluctuation.
CAUTION: Over-adjustment of the orifice can cause
excessive spring load in the second stage valve, and
may impair the regulator’s performance.
8. When the second stage is properly adjusted with no leaks
or lever slack, depressurize and purge the system to dis-
connect the LP hose.
9. Reconnect the LP hose to the inlet coupling, and apply a
torque wrench with 17mm crow-foot to tighten the fitting
to a torque measurement of 55 inch-lbs (±5).
Subjective Breathing Test
1. Connect the regulator to a cylinder containing 2,500 –
3,000 psi, and open the valve to pressurize the system.
2. Turn the venturi switch counter-clockwise to the open or
"dive" position.
3. Fully depress the second stage purge to ensure that an
adequate volume of air flows through the mouthpiece,
sufficient to clear the second stage. Then, breathe sev
-
eral times from the second stage.
A properly serviced and adjusted regulator should de-
liver air upon deep inhalation without excessive inhala-
tion effort, freeflow, or vibration. When exhaling, there
should be no resistance or sticking of the exhalation
valve. If any of these problems occur, refer to
Table
2 - Troubleshooting.
