Cressi MC9 Manual De Istrucciones página 62

1.3 - AC2 in-line piston 1st stage
AC2 regulator has the task to reduce the tanks' pressure. It iscon-
nected to the second stage by means of a hose supplying the diver
with breathable air at environmental pressure. The first stage' s main
task is therefore to reduce the tanks' air to an intermediate pressure,
about 10 bar (145 psi) higher than the environmental.
Small dimensions, light weight, extremely simple structure, special stur-
diness and easy maintenance: here are the main features of this in-line
first stage, offering as high performances as a balanced piston model's.
Its compact and attractive design features four low pressure
3/8" ports in pairs, with preset angles to allow easy connection with
any accessory equipment. The setting is easily performed thanks to
the special revolving ring system, allowing a quick, precise and con-
tinuous adjustment, without having to disassemble the regulator.
WARNING: intermediate pressure must be set only at
authorized Cressi-sub centres; the setting values must NOT
and can NOT be modified by the user, in order not to affect
the good working of the regulator. Cressi-sub decline any
responsibility for any intervention carried out by unauthorized
personnel.
You can find your authorized Cressi-Sub center by
asking your dealer, or Cressi Sub S.p.A. itself (email:
info@cressi-sub.it).
fig. 4
Inside, a conical filter provides a filtering action 200% higher than
a standard flat filter.
Airflow capacity is remarkable, due to new larger air ports, offe-
ring unequalled performance in this class of regulators.
Both international yoke and DIN (at 200 or 300 bar) (2900÷4350
psi) connection are fully interchangeable and are replaced with
each other very quickly (only at authorized Cressi-sub centres).
Its satin finish guarantees the regulator' s best surface perfor-
mance, while contributing to its outstanding strength and relia-
bility. The first stage is manufactured with the finest materials and
Cressi-sub experience.
The first stage can be connected with the tank' s valve either
with an international through an extremely modern designed
bracket, or with a threaded connection DIN (EN 12209-1-2-3),
both complying with EN 250:2000 standard. Should the tank
sused have a working pressure higher than 200 bar (2900 psi), a
DIN connection is recommended.
Besides its technical innovations, this first stage differs from pre-
vious models as to its new esthetical look, enriched with careful
particulars in its finishing as well. It is a top quality high technology
regulator, showing a pleasant as well as aggressive look, united
with outstanding sturdiness and easy mechanics, which allows
an easy and simple maintenance.
AC2 first stage complies with 89/686/EEC directive of 21/12/1989,
checked and certified by N. 0474 RINA – Genoa, with tests in accor-
dance with EN 250:2000 standard, which provides the requisites of
III class Individual Safety Devices: the device therefore is EC branded
and reports the certifying institute indication (0474), as prescribed by
Art. 11A of DE 89/686/EEC directive.
Its remarkable technical solutions, together with high quality
materials, make this first stage a highly reliable regulator, offering
top quality performance for a long time.
Visit our web-site www.cressi.com, where you can find further
information relating to your equipment.
FIRST STAGES 43