Aqua Lung Apeks Regulator - Manual (Page 34)

US
34
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 water diving procedures,
and take special precautions to prevent second stage icing. This
training must include procedures for dealing with regulator freeze-
up, unexpected freeflow, and emergency out-of-air situations. These
procedures are taught in cold water training programs provided by
most recognised certification agencies.
The following measures will further reduce the risk of freeze-up:
1. Request verification from your dive store that the air in your
cylinder(s) is dry. It should have a dew point below -54ºC or -82ºF.
Excess water vapor can freeze, causing a freeflow condition, or
blocking the flow of air entirely.
2. Protect your regulator from any contact with water until the
moment that you are ready to begin your dive.
3. Protect your equipment from cold temperatures before the dive.
Keep your regulator and all its accessories in a warm, dry place.
4. Avoid breathing through the regulator or pressing the purge button
in very cold air before entering the water.
5. Avoid removing the regulator from your mouth during the dive.
This will prevent cold water from entering the regulator’s second
stage.
6. As far as is possible, avoid heavy exertion during the dive in order
to minimise the volume of air flowing through the regulator. Ensure
the IVS/RVS lever is set to plus (+) position while diving. Avoid
discharges of air on the surface. Do not continually press the
purge button.
7. Do not practice buddy breathing etc. Keep your regulator in your
mouth . In an emergency offer or take a spare regulator.
WARNING: SCUBA regulators and equipment have
operational limits when used in water colder than 10°C (50°F).
If you attempt to dive in cold water without first obtaining the
necessary training and preparation of your equipment, you
risk serious injury or death.
Regulator Owner’s Manual
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