> 41VRT 80 Evolution / User guide
maintained whenever the second stage is used as an
octopus for a safe second stage.
At the beginning of the dive, the diver should push the
Venturi lever in the + / plus position, to obtain optimum
breathing characteristics. The + / plus position is the "dive
mode" position.
Note :
• The V80 Evolution first stage 3/8" LP ports can accom-
modate the safe second stage octopus and the buoyancy
compensator LP hose and / or drysuit inflator hose.
• On the 7/16" HP port, install a pressure gauge to check
air supply during the dive.
• A 3300 psi DIN or 4400 psi DIN connection kit can be
installed on the V80 Evolution first stage by a BEUCHA T
authorized dealer.
• A 3300 psi DIN to yoke adapter is available under
ref.16740 to allow the mounting and the use of a DIN
regulator on a standard K-valve cylinder.
2 - COLD WATER USE
Use of regulators in water temperature colder than 50 F /
10° C, requires special equipment and precautions.
Only the VR T30 “Cold type”, VR T80 Evolution, VX10
Iceberg, VX200 Iceberg, VR200 Soft T ouch, VR200
Evolution et VR200 Iceberg should be used in cold water
diving.
1. Make sure that your air supply meet the EN 12021 qua-
lity norm requirements.
2. Use a cylinder with a dual outlet Y-valve and two inde-
pendent breathing system outfitted for cold water use.
3. Do not expose the regulator to cold air (colder than 32
F / 10°C). Place the regulator first stage in the cold water
to bring its temperature up before use.
4. Do not purge the second stage outside the water to
avoid freezing incidence.
5. During the dive : do not purge unnecessary demands
on your regulator, i.e. avoid using all at once the r egula-
tor, the octopus, the BC power inflator and the dry-suit
valve. do not purge the regulator unless required.
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