Cold Water Use; Post Dive - Scubapro MK25T Handbuch

! WARNING
All dives must be planned and carried out so that at the end of the dive the diver will
still have a reasonable reserve of air for emergency use. The suggested amount is
usually 50 bars (725 psi).
7.2

Cold water use

EN 250: 2000 norm defi nes "cold waters" as those having a temperature lower than 10°C
(50 °F) and requires that regulators certifi ed for use in such conditions must be tested and
approved to work properly in temperatures of 4°C (39 °F). If the SCUBA equipment is used in
water with a temperature lower than 10 °C (50 °F) it is important to keep in mind the following:
1. Use only regulators certifi ed for use in these conditions. All SCUBAPRO regulators are
certifi ed for use in cold water in accordance with norm EN 250: 2000.
2. Prior to the dive keep the regulator in a warm environment before fi tting your regulator
on the tank.
3. If the regulator is exposed to colder conditions, much lower than 0°C (32°F), set the
V.I.V.A. knob on "MIN" or "PREDIVE" (Img. 6) to avoid the risk of spontaneous and
uncontrolled free-fl ow.
4. With high air fl ows the regulator fi rst stage cools rapidly, therefore avoid high consumption
rates during cold water dives. For example, avoid simultaneously using the buoyancy
compensator and dry suit infl ator and the alternate air source. Its also advised to avoid
checking the second stage function via the purge button, unless absolutely necessary.
Ensure that the cylinder is fi lled only with air compliant with norm EN 12021.
5. In extremely cold water diving, SCUBAPRO recommends the use of a cylinder equipped
with two separate valves, connected to two complete regulators.
! WARNING
Diving in cold waters requires special equipment and techniques. Before attempting
a cold water dive, obtain adequate training from a recognized certifi cation agency.
7.3

Post dive

Close the cylinder valve and drain the system by pushing on the purge button of each
second stage. Once the system has been depressurized disconnect the fi rst stage regulator
from the valve. All inlets must be closed with the provided protective caps to avoid the
entry of debris, dirt or moisture (Img. 1 and Img. 2). If the cylinder valve is equipped with a
reserve system the rod should be put in the "open" position (fully lowered) to indicate that
the cylinder needs to be fi lled.
Img. 6
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