Cressi MC9 Manual De Istrucciones página 61

42 FIRST STAGES
The latter is made of special thermoplastic state-of-the art ela-
stomers, is highly resistant and easily replaceable. It boasts the-
exclusive innovation of sliding inside a special self-lubricating
cylinder in a special thermoplastic material. The cylinder' s inner
surface is completely free of oxidation, reduces any friction dra-
matically and makes the valve slide in an extremely easy and
precise way, guaranteeing the highest breathing comfort.
The passage of air through the first stage is protected by a spe-
cial cup-shaped conical sintered filter, retaining any impurity from
tank and valves.
The regulation system of intermediate pressure in MC5 balan-
ced diaphragm first stage is the same as all other Cressi-sub first
stages, allowing an easy and quick adjustment of intermediate
pressure without having to disassemble any component of the
regulator.
WARNING: intermediate pressure must be set only at
authorized Cressi-sub centres, while the setting values can
NOT and must NOT be modified by the user, in order not to
affect the regulator' s performance. 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).
Balanced diaphragm first stage features a light compact structu-
re in chromium-plated brass with inner components in stainless
steel, chromium-plated brass and state-of-the-art thermoplastic
resins.
It is supplied with three low pressure (LP) 3/8" ports - specially
angled to allow the best hose positioning, avoiding any encum-
brance among different devices - and a high pressure (HP)7/16"
port with a micrometric air exit hole, guaranteeing maxi-
mum safety even in the case of damage to the high pressure-
hose, since it prevents the tanks from emptying.
WARNING: an underwater pressure gauge or a compu-
ter with such function must be connected with the HP port of
the first stage.
Since the tanks are not supplied with a reserve device, a pres-
sure gauge must always be used, reporting the progressiveair
consumption by diving and the reaching of reserve pressure,
which has to be considered as not to be used by diving but only
as emergency air supply.
Diving without any gauge is dangerous, since the diver can
not control his own air reserve, which might suddenly run out,
at his own high risk.
The first stage can be connected to the tank valve with an inter-
national, by means of an extremely modern designed bracket, or-
with a threaded connection DIN 300 bar (4350 psi) (EN 12209-
1-2-3), both complying with EN 250:2000 standard.
Like all Cressi-sub regulators, whose several components are
interchangeable one with the other, MC5 is compatible with
other diaphragm first stages of the present range.
MC5 balanced diaphragm first stage, like other Cressi-sub
diaphragm first stages, having all inner components watertight,
is to be recommended, rather than other piston models, by
diving in suspension or mineral salts rich water.
It ca be used as well for diving in cold water at temperature lower
than 10 °C/50 °F, complying with 89/686/EEC directive of
21/12/1989, checked and certified by N. s RINA – Genoa, with
test in accordance with EN 250:2000 standard, which provides
the requisites of III class Individual Safety Devices: the device the-
refore is EC branded and reports the certifying institute indication
(0474), as prescribed by Art. 11A of DE 89/686/EEC directive.
Its remarkable technical features, together with its high quality
materials, make this first stage a highly reliable regulator, guaran-
teeing best performances for a long time.
Visit our web-site www.cressi.com, where you can find further in-
formation relating to your equipment.