GB
12
Regulator Owner’s Manual
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External Second Stage Adjustments
External adjustment features offer many advantages, including the ability
to adjust your second stage regulator’s sensitivity as your diving conditions
change. This allows you to maintain peak performance throughout every
dive, or to desensitise your regulator’s opening effort at times when you
are not breathing from it.
Integrated Venturi Switch
Some second stages are equipped with a diver controllable venturi
system. This system is known as the Integrated Venturi System (IVS) or
Reversible Venturi System (RVS) and is included on the XTX and variants
of the MTX-R range of second stage regulators. This switch allows the
diver to control the venturi assist thereby reducing the sensitivity to free
flow at the surface whilst the second stage is out of the mouth. Whilst
diving the switch provides maximum airflow at depth.
Whilst diving and with the second stage in your mouth, set the switch to
plus (+) to achieve maximum venturi assistance for easier breathing.
To prevent the second stage from free-flowing, however, you should set
the IVS/RVS to the MIN(–) setting during entry or while swimming on the
surface.
NOTE: Egress and some MTX-R and
MTX second stages do not include an
integrated venturi Switch.
+
CAUTION! Do not use mouthpiece
insertion type Octopus holders.
The internal venturi deflector may
become dislodged.
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