9
Owner's Guide
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 sub-
aquatic somersaults at which time you may experience temporary 'wet breath-
ing'.
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 initiate a flow of breathing gas.
Pre-Dive/Dive Switch (on top):
The Delta 3 features a Pre-Dive / Dive switch located on top of the body.
• Placing the switch in the left ( - ) position (Pre-Dive) reduces, or eliminates,
the possibility of high volume free-flow when the mouthpiece is not in your
mouth.
• Placing the switch in the right ( + ) position (Dive) provides optimum per-
formance during a dive.
Delta 3 Adjustment Knob (on side):
The Delta 3 provides a breathing effort adjustment (knob on the side of the
body) that enables you to adapt breathing performance to different diving con-
ditions.
• By turning the adjustment knob 'clockwise' breathing resistance (effort) is
increased. This is done to prevent undesirable loss of breathing gas (free
flowing) that often occurs when a high performance regulator Second
Stage is connected as an octopus second stage, or when the primary Sec-
ond Stage is not in the diver’s mouth, such as when surface snorkeling.
• Turning the adjustment knob 'counter clockwise' decreases breathing resis-
tance and reduces work of breathing. Adjustment should be used to im-
prove performance, it should not be used as a method to use less breath-
ing gas. During periods of heavy exertion underwater, and to compen-
sate for the effects of depth, it is advantageous to have a regulator that
can provide minimal inhalation resistance and optimal performance when
desired.
