Sabre ELSA Dash, Инструкция пользователя

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ELSA DASH/SPRINT
4
2.4 REDUCER VALVE
(DASH/SPRINT)
The reducer is a simple, automatic spring
and piston device, which screws into the
charging adaptor of the cylinder valve and
must be removed to charge the cylinder. It
is attached to the cylinder using the
handwheel.
It provides an output pressure of between
5.5 and 9.5 bar with a maximum flow rate
of 300 L/min.
The medium pressure system is protected
by a pressure relief valve (PRV) located in
the reducer which opens when pressure in
the reducer rises above 9.5 bar.
2.5 DEMAND VALVE
(SPRINT)
Instant Positive Pressure DV
The demand valve employs a servo
assisted, tilting diaphragm to regulate the
supply of air into the facepiece. It operates
in conjunction with the spring-loaded
exhale valve to maintain a positive
pressure within the facepiece.
First Breath DV
The demand valve is available with a first
breath actuation mechanism that becomes
active when the wearer takes a first
breath; or with instant positive pressure
where air is available as soon as the
cylinder valve is opened.
Demand valves with a first breath
mechanism have a black cover, while
instant positive pressure demand valves
have an orange cover.
First breath mechanism demand valves
have a black rubber reset button which,
when pressed, closes the demand valve.
This permits the demand valve to be
removed from the facepiece for testing or
at the end of an escape. Once reset the
demand valve is opened by the wearer
inhaling sharply.
2.6 CYLINDER VALVES
(DASH/SPRINT)
The cylinder valve has a handwheel-
operated slug which closes the valve.
The charging port is a DIN 477 type A.
The contents gauge, which indicates the
cylinder charge level, has three coloured
sectors: green (fully charged), orange
(safe to use but will not provide the full
duration) and red (Empty - DO NOT USE).
A burst disc is fitted, which blows if the
cylinder charge exceeds 300 bar, and in
the event of damage to the gauge, a
restrictor limits air loss to 25 L/min.