User manual

Poseidon MKVI User Manual Chapter 1 Page vi
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 MKVI.
The exact specications and values of the MKVI can be found in the later chapters of this
user guide. The below text shows that the MKVI operates within these CE require-
ments.
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 MKVI in a safe manner.
8.2
This manual is written in the English language.
8.3
The application of the Poseidon MKVI is as a diving apparatus, to be used for
re creational, no-decompression diving with mixtures of air and oxygen.
The Poseidon MKVI is certied to a maximum operating depth of 60 meters (197 feet).
Two gas supply mixtures are used with the MKVI: air and oxygen (>92% pure); and
the maximum depth for the resultant breathing mixture blended by the Poseidon
MKVI is 60 meters (197 feet).
Use of the MKVI is limited to diving underwater, solely by persons who have received
proper training.
Detailed instructions on assembly of the Poseidon MKVI, 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 MKVI, with input from the manual before a dive if the diver
believes it is needed.
The operating temperature for the Poseidon MKVI is between a minimum of 4º Celsius
(39º Farenheit), and a maximum of 35º Celsius (95º Farenheit). Operation at temperatures
outside of this range may lead to unreliable function.
The Poseidon MKVI is intended for use on dives involving low to moderate work
rates, typical of normal recreational diving activities. Although it is capable of sustain-
ing divers operating with high work rates, this is not its intended purpose.
The Poseidon MKVI 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 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). Users must monitor
displays and alarm systems and respond appropriately if oxygen concentrations
become unsafe.
The Poseidon MKVI 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 MKVI in visibility conditions that prohibit viewing of the LCD
screen poses increased risks of operation.
The Poseidon MKVI 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 MKVI requires proper pre-dive setup, and several important verication
procedures that must be carried out by the diver. Details of these procedures are
included in Chapters 1 and 2 of this Manual. The MKVI also incorporates many auto-
matic system tests as part of the power-up procedure. Using the MKVI without com-
pleting these automatic system tests poses signicantly increased risk to the diver.