Seac Sub N-Synchro Instructions page 14

All products in the Seacsub Nitrox line may only
be used by divers who have completed a course
on diving with NITroX (oxygen-enriched mix-
ture) led by qualified instructors and who have
earned a corresponding certificate.
ComPATIBIlITY
only Seacsub products and spare parts that are
expressly set up to be oxygen-compatible may
be used at high pressure (over 20 bar) with
breathing mixes containing oxygen greater
than 21%.
All products and spare parts in the Seacsub
Nitrox line are compatible with all breathing
mixes containing oxygen up to 100%.
Except for during annual maintenance, it is not
necessary to constantly grease the N-SYNChro
regulator first and second stages.
During routine annual maintenance, only use
oxygen-compatible lubricants certified for this
specific use.
in any event, silicone-based or mineral com-
ponent lubricants absolutely must not be
used because they can cause serious harm to
people and things.
N-SYNCHRO REGULATOR
This first stage combines very high performance
with an extremely compact and functional
shape.
operation is ensured by a balanced diaphragm
system which maintains a constant intermedi-
ate pressure with reference to both tank pres-
sure and depth. In addition, the diaphragm
completely separates the regulator core from
the external environment, ensuring complete
reliability over a long series of dives.
It is made from a single piece of copper-plated
brass that is subsequently nickel- and chrome-
plated. Internal components are manufactured
from chrome-plated brass with music-wire
springs, Teflon seals, and VIToN o-rings.
Five low-pressure outlets with a 3/8" thread
provide a constant pressure of about 9.8 bar;
there is also a high-pressure outlet with a 7/16"
thread and inner hole with a diameter of 0.20
mm. This high-pressure outlet can also be fitted
with an underwater pressure gauge by means
of a hose with a threaded male 7/16" end.
12 12
lUBrICANTS
FIrST STAGE
Warning!
use only pressure gauges with 7/16" thread.
Do not use any type of adapter between the
first stage and the high pressure hose con-
nection.
N-SYNCHRO – N-SYNCHRO
OCTO REGULATOR
SECoND STAGE
The case is made of synthetic resin, a material
that is particularly resistant to blows and abra-
sions, and withstands both ultraviolet rays and
chemical agents. Silicone membrane. Internal
components in chrome-plated brass and stain-
less steel. mouthpiece in anallergic silicone.
VIToN o-ring.
operations are controlled by a "Downstream"
type of valve used in conjunction with chan-
neling that makes use of the Venturi effect.
This means that the diver's breathing controls
the supply of air at all times: normal breathing
action produces a light air flow, while heavy
breathing due to fatigue or deep diving pro-
duces greater air flow, also increased by the
Venturi effect.
The system ensures low air consumption, re-
ducing waste, because it responds exactly to
breathing demand. It also ensures the maxi-
mum safety, because it can also operate if the
first stage is over pressured, purging the excess
pressure to ensure continual breathing flow.
The N-SYNChro regulator hose is the stan-
dard type (length 760 mm and 3/8" thread).
When designing this new second stage we took
into account all suggestions and comments that
we received over the years from our diving cen-
ters and expert divers form all over the world.
The N-SYNChro second stage is built with
regard to the technical details of every compo-
nent while seeking to optimize performance,
security, and comfort.
The careful selection of materials and in depth
study of the components has allowed a reduc-
tion in the overall respiratory efforts, offering
linear and constant ease of breathing.
The Venturi effect
N-SYNChro second stage allows a gradual and
abundant airflow that naturally varies accord-
ing to the inhalation demanded.
An externally adjustable flow deviator (Dive
and Pre-Dive) allows the optimization of air-
flow according to the breathing needs of every
individual diver.
Each individual component was subjected to in
depth study and continual laboratory testing to
optimize performance.
obtained with the