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WARNING: Adjusting your regulator to increase breathing
resistance will not conserve air. Instead, excessive breathing
resistance will actually increase air consumption, and may
elevate the CO2 in your bloodstream to a dangerous level
which could lead to serious injury or death due to drowning if
you lose consciousness.
If you swim underwater in an upside down or sideways position, or
facing a strong current, you can turn the inhalation control knob back
“in” (clockwise), to desensitize the opening effort to prevent any
freeflow.
At the end of your dive, be sure to return the IVS switch to the MIN
position, and turn the inhalation control knob “in” when you have
arrived at the surface.
WARNING: Deep diving requires special training and equipment, and
greatly increases your risk of decompression sickness and other
serious diving injuries. If you attempt to dive beyond prescribed no-
decompression limits without first obtaining sanctioned technical dive
training, you risk serious injury and death.
Diving In Cold Water
The C.E.N. standard defines cold water as 50ºF (10ºC) or lower. In
such conditions, there is a risk of freeze-up; particularly in fresh water,
which has a higher freezing point and more severe thermoclines.
Incidents of first or second stage freeze-up usually result in freeflow
from the second stage, resulting in a rapid loss of air.
Before attempting an unsupervised dive in cold water conditions, it is
important for you and your buddy to obtain certified training in cold
water diving techniques, and to use only equipment which has been
specifically designed and maintained for such use. If these
precautions
are not taken, freeze-up can occur. It is possible for icing or freeze-up
to occur, even with a regulator that has been specially designed for
cold water use. It is therefore imperative to practice the correct cold
Integrated Venturi System
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