OMS Airstream Evoque Regulator, Owner'S Manual

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During the Dive
When you are ready to submerge, place the second stage in your mouth and set the
Venturi pad lever to your desired position. Turn the inhalation control knob out
(counterclockwise) until the regulator breathes comfortably without leaking or being
undesirably sensitive.
As you descend, you may want to turn the inhalation control knob further out to make
breathing easier. This will be particularly true on deep dives where the air density increases.
Anti Freeze Protection
Whenever your cylinder is filled, request verification that the water vapor content of the
supplied gas is less than -65F dew point. Mots dive stores and operators obtain testing and
certification to provide evidence of compliance with pure gas standards. Excessive water
vapor can increase the potential for Regulator freeze-up and subsequent regulator failure.
WARNING
: Gas with excessive water vapor can cause the regulator to freeze up and
result in regulator failure.