MSA AUER AirMaXX, Руководство пользователя

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1 Description
The compressed air breathing apparatus AirMaXX
is a self-contained, open-circuit breathing appara-
tus operating independently of the ambient air.
Breathable air is supplied to the user according to
his demand from (a) compressed air cylinder(s) via
a pressure reducer, a demand controlled valve as-
sembly according to EN 137 (see Instruction Man-
ual of lung governed demand valve) and a
facepiece according to EN 136 (see Instruction
Manual of full face mask). The exhalation air is re-
leased through the exhalation valve of the
facepiece directly to the ambient atmosphere.
Compressed air breathing apparatus are pure gas
protection devices and not suitable for underwater
diving.
2 Components
2.1 Carrying Assembly
2.1.1 Carrying Plate
The two-part carrying plate of the AirMaXX is ad-
justable to three different lengths and thus can be
adapted to different user heights. The lines are in-
tegrated in the slideable upper part. They are fixed
in special receptacles and thus are always in the
correct position.
The elastic fixation of the hip belt permits full free-
dom of movement by the user. In order to correctly
don the AirMaXX, it automatically returns to hori-
zontal position.
Slide knobs that are integrated in the cylinder sup-
port permit simple connection of different com-
pressed air cylinders. The cylinder retaining strap
is freely adjustable and designed for a single or
twin cylinders.
2.1.2 Harness
The AirMaXX harness has preshaped ergonomic
hip and shoulder pads. All tightening straps can be
individually adjusted in length. All harness compo-
nents are easily and quickly disassembled.
A chest strap is available as accessory (Sect. 6)
2.2 Pressure Reducer
Combinations of the following pressure reducer
variants to many compressed air basic breathing
apparatus of the AirMaXX series are possible.
Furthermore, variants can be retrofitted at author-
ised service centres (see Sect. 6).
2.2.1 Standard (AirMaXX)
The pressure reducer is mounted on the carrying
plate. At the pressure reducer are the safety valve,
an audible warning device (whistle), the pressure
gauge line with pressure gauge (alternatively, the
electronic monitor ICU), as well as the medium
pressure line to connect a lung governed demand
valve (e.g. MSA AutoMaXX). The pressure reducer
reduces the cylinder pressure to approx. 7bar. The
safety valve activates at a pressure above 11bar to
prevent damage and to assure the supply
of
breathing air. The audible warning device is set by
MSA to start a constant warning signal at a pres-
sure below 55
±
5bar. The medium pressure line is
located parallel to the pressure gauge line in the
carrying plate and has a safety coupling (medium
pressure coupling) to connect the lung governed
demand valve.
2.2.2 With Signal Line (AirMaXX-S)
The whistle is on a separate signal line in a pro-
tected location near the user's ear where it can be
better heard, as well as identified as the user's own
warning signal.
2.2.3 With Second Connection (AirMaXX-Z)
The AirMaXX-Z has a second medium pressure
coupling at the end of the medium pressure line
where a second lung governed demand valve
(rescue set consisting of normal pressure lung
governed demand valve and facepiece) can be
connected if required, supplying a second user
with compressed air.
Or, an external air source can be connected, e.g. a
compressed air line breathing apparatus.
2.2.4 With Quick-Fill Connection (AirMaXX-Q)
The AirMaXX-Q has a high pressure line with
safety coupling at the left hip belt where the 300bar
cylinder(s) can be refilled without removing the
compressed air breathing apparatus.
2.2.5 AirMaXX eXXtreme
This apparatus is available in the basic version as
well as the derivatives –S, -Z, -Q, -ICU, ICU(S) and
all combinations thereof. AirMaXX eXXtreme dis-
tinguishes from standard AirMaXX mainly by a
harness with increased heat and flame resistance,
metal plated buckles and protecting channels for
the hoses on the shoulder pads.
2.3 Compressed Air Cylinders
2.3.1 Types
The AirMaXX is compatible with a large number of
different compressed air cylinders (see Sect. 6).
The MSA compressed air cylinders are made of
steel or carbon fibre compound (composite). They
are type approved and in accordance with the re-
spective standards. Applicable national regulations
must be observed. The cylinders must be ordered
separately. Protective covers are available for all
6.0 l and 6.8 l composite cylinders. (see Sect. 6).
2.3.2 Valves
The non-lockable or lockable cylinder valves that
are screwed into the compressed air cylinders are
in accordance with EN 144. The handwheels are
shock-protected and must be opened completely.
For safety reasons the lockable cylinder valve can
only be closed while being pulled.