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Owner's Guide
ALPHA 7 SECOND STAGE
WARNING: Even if your First Stage is properly prepared
for use in harsh environmental conditions, only proper
training will protect your Second Stage from the effects of
the environment.
FEATURES AND OPERATION
The Second Stage of the regulator assembly receives breathing gas at an interme-
diate pressure of approximately 140 psi from the First Stage and delivers it to
you at ambient pressure during inhalation. When you stop inhaling, it then shuts
off the flow of breathing gas and provides a path for exhaled gas.
All Second Stages have a level of sensitivity that can result in excess breathing
gas being expelled when the Second Stage is not in your mouth while in the wa-
ter. When this occurs, it is usually during entry or when at the surface.
The condition described, referred to as free-flow, can usually be stopped by turn-
ing the Second Stage so the Mouthpiece is pointing down and the Purge Button
is pointing up.
Recommended for an Octopus is to carry it with the Mouthpiece facing down
when not in use, or to use a Mouthpiece Plug or Cover to prevent free-flow in the
event that it is bumped.
During normal use underwater, a small amount of water collects inside the Body
of a standard regulator Second Stage in a natural reservoir near the bottom. This
is normal for most Second Stages, and the water is held away from your mouth
naturally and will go unnoticed unless you become inverted or do subaquatic
somersaults at which time you may experience temporary 'wet breathing'.
Water can be purged from the small internal air space of most Second Stages by
exhaling a small puff of breathing gas into the Mouthpiece, or by blocking the
Mouthpiece with your tongue and pressing the front mounted Purge Button to ini-
tiate a flow of breathing gas.
Second Stage Swivel
A Low Pressure Swivel is available as an accessory from your Authorized Oce-
anic Dealer who can install one on your Oceanic Second Stage.
7


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