POSEIDON SE7EN+ - Conformance with CE Requirements; Chapter 1 Page

Poseidon SE7EN+ User Manual Chapter 1 Page viii
Conformance with CE requirements
The information listed in this chapter are the CE requirements that have to be met to
get a CE approval and they are NOT the exact specications of the Poseidon SE7EN+.
The exact specications and values of the SE7EN+ can be found in the later chapters of
this user guide. The below text shows that the SE7EN+ operates within these CE
requirements.
In conformance with the European Standard EN 14143, section 8, the following
information is provided herein:
8.1
This manual contains information that will enable trained and qualied persons to
assemble and use the Poseidon SE7EN+ in a safe manner.
8.2
This manual is written in the English language.
8.3
The application of the Poseidon SE7EN+ is as a diving apparatus, to be used for
re creational and technical diving dependant upon the way the diving apparatus has
been congured. Diving with mixtures of air, helium and oxygen.
The Poseidon SE7EN+ is certied to a maximum operating depth of 100 meters (328 feet).
Several gas supply mixtures are used with the SE7EN+: air, Trimix, Heliox and oxygen
(>92% pure); and the maximum depth for the resultant breathing mixture blended by
the Poseidon SE7EN+ is 100 meters (328 feet).
Use of the SE7EN+ is limited to diving underwater, solely by persons who have
received proper training.
Detailed instructions on assembly of the Poseidon SE7EN+, including descriptions of
the individual components, the specic connections between components, and the
various safety devices, are included within Chapters 1 and 2 of this manual.
The user shall be able to understand the risk and make an assesment regarding the
risk of using the Poseidon SE7EN+, with input from the manual before a dive if the
diver believes it is needed.
The operating temperature for the Poseidon SE7EN+ is between a minimum of 4º
Celsius (39º Farenheit), and a maximum of 35º Celsius (95º Farenheit). Operation at tem-
peratures outside of this range may lead to unreliable function.
The Poseidon SE7EN+ is intended for use on dives involving low to moderate work
rates, typical of normal recreational and technical diving activities. Although it is
capable of sustaining divers operating with high work rates, this is not its intended
purpose.
The Poseidon SE7EN+ is intended to maintain a breathing gas mixture representing
an inspired oxygen partial pressure of between 0.5 bar (0.35 bar minimum) and 1.2
bar (1.4 bar maximum). The oxygen fraction of the mixture depends upon depth and
set point. At the surface the oxygen fraction will vary from 50% to 100% and the
nitrogen fraction from 50% to 0%. At the maximum recreational operating depth of
40 msw, the oxygen fraction will vary from 20% (set point = 1.0) to 28% (set point =
1.4) and the nitrogen fraction will vary from 80% (set point = 1.0) to 72% (set point
1.4). At the maximum operating depth of 100 msw, the oxygen fraction will vary from
9,1% (set point = 1.0) to 12,7% (set point = 1.4). The nitrogen fraction will vary
depending upon selected diluent gas congured for the particular dive planned.
Diving at deeper depths requires training beyond the recreational scope and shall
only be carried out by trained individuals. Users must monitor displays and alarm
systems and respond appropriately if oxygen concentrations become unsafe.
The Poseidon SE7EN+ requires the monitoring of a backlit liquid-crystal display (LCD)
screen, and thus should only be used when water visibility exceeds approximately
30 centimeters. Using the SE7EN+ in visibility conditions that prohibit viewing of the
LCD screen poses increased risks of operation.
The Poseidon SE7EN+ incorporates high-pressure oxygen as one of its supply gas
mixtures, and uses equipment that has been cleaned and prepared specically for
use with high-pressure oxygen. Appropriate care must be taken when handling such
mixtures, especially when lling cylinders and providing proper maintainance and
oxygen-compatible cleanliness for all components exposed to high-pressure oxygen.
Components exposed to high-pressure oxygen (e.g., the oxygen regulator and associated
pneumatic components) must be serviced by a qualied service center. Failure to
comply with these instructions could lead to an oxygen re and may cause serious
injury or death.
The Poseidon SE7EN+ requires proper pre-dive setup, and several important veri-
cation procedures that must be carried out by the diver. Details of these procedures