POSEIDON XSTREAM Manuale utente

USER MANUAL :: ENGLISH

:: XSTREAM

Our objective is that the equipment you are wearing should not be noticeable, instead it should be at one with the experience and give

you total freedom to achieve what every diver dreams about, the ultimate dive. To be at one with the water. To have full control and at

the same time feel the weightlessness when, meter by meter you descent into a world of your own.

Nothing shall disturb your concentration. No wheels or levers that need adjusting. No regulators that resist your breathing when you have

reached your target depth. No suits that limit your freedom of movement or get damaged at the slightest encounter.

This vision has accompanied Poseidon since the legendary diving enthusiast and engineer, Ingvar Elfström started the company in the

late 50’s. The same ideas motivate us now.

The name Poseidon represents constant development and improvement of diving equipment where everything is positioned correctly

and everything functions, even in the most extreme situations.

Products developed in cold Scandinavian waters that are among the toughest you can dive in. If they work here, they will work any-

where. Poseidon’s devoted followers are convincing proof of that. Thank you for your confidence.

Yours faithfully

Poseidon XSTREAM for XSTREAM use

Welcome, new Poseidon divers. Here at POSEIDON we are very pleased that you have chosen one of the world’s foremost

diving regulators.

POSEIDON has been developing regulators for divers since 1958.

Professional divers, military divers, and techdivers choose POSEIDON equipment because of the high

demands they place on our products - the same demands you have!

Your new regulator has been designed to provide you with a life time of pleasure as a POSEIDON diver.

USER MANUAL :: ENGLISH :: 3XSTREAM

INTRODUCTION

The Xstream regulator series is approved

according to the EU Directive for Personal

Protective Equipment, 89/686/EEC and

meets or exceeds the applicable (see Tech-

nical Data for full detail) requirements of :

EN 250:2000 for cold water diving

NORSOK U-101 for diving in excess of 50m depth (exclu-

ding requirements for CO2 content and temperature of

inspired gas)

EN 738-1 for oxygen pressure shocks

Type approvement certificate no 020341, 020342 and

020343 is issued by SGS United Kingdom Ltd., Unit 202b

Worle Parkway Weston-super-mare, BS22 6WA United

Kingdom. Notified body number 0120

Production quality assessment according to article 11 B of

89/686/EEC is assessed by SGS United Kingdom Ltd., Unit

202b Worle Parkway Weston-super-mare, BS22 6WA Uni-

ted Kingdom.

Independent performance testing according to directive

and standards is conducted at accredited laboratories Di-

ving and Naval Medicine Centre, Swedish Armed Forces,

and Det Norske Veritas, Norway.

Poseidon Industri AB is certified according to ISO 9001

APPROVALS/CERTIFICATIONS

:: 4 XSTREAM USER MANUAL :: ENGLISH

INTRODUCTION

Oxygen: any gas mixture containing greater than 21% oxy-

gen up to 99.95% oxygen.

Trimix: a gaseous mix containing Oxygen, Nitrogen and

Helium.

EAN 50: any gas mixture containing greater than 21% oxy-

gen up to 50%. Enriched Air Nitrox.

IP: Interstage pressure; the pressure existing between the

1st stage and the 2nd stage valve.

HP: High pressure; the pressure inside the SCUBA cylinders,

normally ranging between 300 bar (4351 psi) to 10 bar (145

psi)

Scfm: standard cubic feet per minute.

l/min STPD: standard temperature and pressure dry gas.

T.D.A: Thermo Dynamic Anti-Freeze

DEFINITIONS/ABBREVATIONS

USER MANUAL :: ENGLISH :: 5XSTREAM

FUNCTION

Although the regulator is functional with

pure oxygen and has excellent breathing

characteristics down to 200m (656 ft), the

usage is restricted by human limitations, or,

by limitations set out by the dive training

organisation, whichever is lower.

Poseidon only warrants the regulator performance as spe-

cified herein, and cannot be held responsible for improper

preparations, incorrect gas mixing and planning, or diving

beyond individual medical, psychological and physical limi-

tations.

Limitations of use:

Xstream Deco, Oxygen and Duration models no higher oxy-

gen content than 99,95% by volume

Xstream Deep models only for use with air or Trimix with a

maximum oxygen content of 21%, and a maximum Helium

content of 77%

Xstream Dive and octopus only for use with air and a maxi-

mum depth of 50 meters.

Maximum depth never more than 200 meters (656 ft), but

normally limited by medical effects of the gas.

The oxygen partial pressure must normally not exceed 1.4

bar (20.3 psi), under the foreseeable maximum diving depth.

Only if established oxygen exposure tables are strictly adhe-

red to, and a responsible organisation is planning dives with

increased exposures, elevated levels can be accepted for a

shorter period of time.

The oxygen partial pressure must never be lower than 0.2

bar (2.9 psi), under the foreseeable minimum diving depth.

GENERAL SAFETY REGULATIONS

:: 6 XSTREAM USER MANUAL :: ENGLISH

FUNCTION

The nitrogen partial pressure must not exceed 3.2 bar (46.4

psi), under the foreseeable maximum diving depth.

Inhaling cold gas and exhaling warmed gas, represents

energy losses of the human body (thermal imbalance, hy-

pothermia). This effect increases with increasing depth and

can result in a sudden unconsciousness. Diving to extreme

depths this effect must be considered, calculated and plan-

ned for and preventive actions must be taken, such as pro-

per thermal protection and pre-heated gas

Xstream is for unlimited use in water temperatures from

water freezing temperature tice +1°C to +50°C (122°F). The

freezing temperature depends on salt content.

Diving with gas blends other than air, or deeper than 18 m

(59 ft), or in overhead environment, requires special train-

ing regarding practices, equipment, physical and medical

understanding.

This manual assumes the reader has some basic knowledge

in those respects.

Diving is a strenuous physical activity. Its difficulty may be

increased by conditions such as cold water, poor visibility,

hard work, and increased depth. Always try to exercise pru-

dent judgement when determining whether or not to dive.

Never dive when tired or in poor health.

Diving deeper than 50m (164 ft) using gasses other than

air is more demanding on the equipment. Most equipment

on the market is only approved for use within EN 250 limits.

Although Xstream Deep is certified to 200m (656 ft) depth

and Xstream Deco is for use with pure oxygen, you must al-

ways make sure all of your equipment is suitable.

Do not use gas mixtures containing Helium for dry suit infla-

tion. Helium has very low insulating properties, and contri-

USER MANUAL :: ENGLISH :: 7XSTREAM

FUNCTION

butes to a more rapid cooling of the body.

Preferably Argon shall be used, but must

never be inhaled. Insulating or actively hea-

ting of the body surface has very little effect

on the hypothermia described above.

WARNING!

Xstream Oxygen, Xstream Deco and Xstream Duration

must be used exclusively with Nitrox or Oxygen and should

be kept O2 clean at all times. If a Oxygen, Deco or

Duration regulator is contaminated or used with a

contaminated fill then the regulator must be O2 cleaned by

a certified Poseidon O2 technician.

WARNING!

The Xstream regulators are not designed to be breathed

up on by more then one person at a time. If you configure

your Xstream regulator for more then one diver to breath

from it at a time, the cold water performance may not meet

minimum safety standards.

:: 8 XSTREAM USER MANUAL :: ENGLISH

FUNCTION

Oxygen alert and oxygen handling recommendations in this

manual applies to all parts and products intended for use

with greater than 21% oxygen by volume.

All accessories and other SCUBA equipment connected to

Xstream must be approved by the manufacturer for use with

the same oxygen content which is used with the Xstream.

Cylinder valves must always be opened carefully and slowly,

to avoid pressure shocks.

Oxygen can cause serious medical effects or even death

if used incorrectly. Use recognised tables for oxygen

exposure.

Xstream Oxygen EN 144-3/Deco/Deco EN 144-3 is approved

for oxygen service directly from the box, i.e. it is cleaned

to NASA Specification [1] Cleaning test Level 100 (particle

contamination) and NVR levels less than ASTM G63 Level C,

<50 mg/m2 (hydrocarbons).

Xstream Duration/Duration EN 144-3 is cleaned to the same

level as Xstream Deco Regulators and all other equipment

for oxygen service must be identified as such

Xstream Oxygen EN 144-3/Deco/Deco EN 144-3 and Dura-

tion/Duration EN 144-3 must never be used with contami-

nated gas. Refere to Breathing gas section.

OXYGEN SAFETY REGULATIONS

USER MANUAL :: ENGLISH :: 9XSTREAM

FUNCTION

PRODUCT DESCRIPTIONS

The Xstream regulator models have been

developed based on experience gained from

deep diving, cave diving, wreck diving and

cold water diving.

The different types all share some common

requirements on safety through functiona-

lity, simplicity and performance.

XSTREAM 2:ND STAGE

A number of features greatly improve safety and ease of

use:

If debris has degraded the function of the exhalation check-

valve, it can easily be reached and corrected by just twis-

ting off the diffuser. It is the only part which needs to be

disassembled, and if it gets lost during the operation, the

regulator will continue to function but must only be used for

immediate ascent.

In case of a malfunction in the 1st stage causing excessive

intermediate pressure, the safety valve integrated in the

1st stage will bleed off the excessive gas. This system both

indicates to you that something is wrong so that you can

take action, and because of the up-stream servo-valve tech-

nique, allows the regulator to continue to breath normally.

(conventional downstream regulators are likely to free-flow

in such a situation)

Integrated surgical hose fixing points safely secures the

regulator to the diver, but in an emergency allows a distres-

sed buddy to retrieve the regulator without undue stress to

the diver.

The dead air space is low at just 49.5 ml (3 in3) making CO2

:: 10 XSTREAM USER MANUAL :: ENGLISH

FUNCTION

figures (hypercapnia) minimal. Inhalation resistance is in-

credibly low and unaffected by depth and breathing pattern

Because of the unique Poseidon valve technology, there is

no need for external adjustments.

Xstream is fitted with the new ergonomic mouthpiece Posei-

don AIR, with asymmetrical lugs for the most comfortable

bite.

All diaphragms are protected so that a strong current or

using a scooter or tug does not affect either inhalation or

exhalation.

A minimal number of moving parts, coupled with

thermodynamic engineering, ensures the safe use in an

extremely cold environment.

XSTREAM 1:ST STAGE

The first stage is a balanced rolling diaphragm ball valve

producing extreme leaktightness.

Conventional designs are sensitive to wear, misalignment,

and manufacturing precision. A ball always finds its correct

place.

Combined with the 2nd stage, the enormous capacity of the

1st stage make the regulator meet the EN 250 breathing

performance requirements even at as low as 16 bar (232

psi) cylinder pressure. This means that you gain an extra 34

bar (493 psi) of gas compared to most other regulators!

The Xstream construction requires less o-rings than any

other regulator. Except for sealing the blind screws (3-4),

there is just 1 sealing o-ring (semi-static) in the bottom-

mounted versions and 2 in the side mounted.

The hose routing is developed to be optimised for a redun-

dant system, using two regulators. The HP ports are positio-

ned to accommodate the use of gas monitoring computers

e.g. first stage mounted HP sender/receive units.

Patented

Xstream 180° Model

Xstream 90° Model

Xstream 2nd stage

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