WARNING : Cold water diving requires special equipment and training.
Failure to follow the above instructions and recommendations can result
in serious injury or death. Certified instruction should be received and
completed for cold water and ice diving from a certified instructor by a
recognized training agency prior to attempting any cold water or ice
diving.
AUXILIARY SAFETY SYSTEM (OCTOPUS)
A backup air supply system is a specific 2nd stage demand valve designed
to provide emergency breathing assistance. This 2nd stage demand valve,
or Octopus, is intended to be fitted to the same 1st stage that supplies the
principal 2nd stage. An Octopus can be easily distinguished as its front
surface and LP hose are normally colored yellow.
In accordance with standard EN 250-2014, a regulator fitted with an
Octopus is tested and certified at a depth of 50 meters in individual
respiration via the principal 2nd stage, and at a depth of 30 meters in
simultaneous respiration via the principal 2nd stage and the 2nd stage
Octopus.
A regulator fitted with an Octopus must not be used by two divers
simultaneously at depths below30 meters (unless expressly specified for a
particular model) and in water colder than 10°C.
In accordance with standard EN250-2014, regulators marked EN250 A (A
as in Auxiliary) can be fitted with an Octopus that is also marked EN250 A
Diving in cold water: For use in cold water (below 10°C), connect a cold
water Octopus (without the >10°C marking) to a cold water regulator. A
regulator equipped in this way is not designed to allow two divers to
breathe, and should only be used to provide emergency breathing
assistance to a single diver.