Dräger PAS AirPack 2 Instructions For Use

®
PAS AirPack 2
Airline breathing air supply system
1 For your safety
1.1 General safety statements
● Before using this product, carefully read the Instructions for Use.
● Strictly follow the Instructions for Use. The user must fully understand
and strictly observe the instructions. Use the product only for the
purposes specified in the Intended Use section of this document.
● Do not dispose of the Instructions for Use. Ensure that they are
retained and appropriately used by the product user.
● Only fully trained and competent users are permitted to use this
product.
● Comply with all local and national rules and regulations associated
with this product.
● Only trained and competent personnel are permitted to inspect, repair
and service the product. Dräger recommend a Dräger service contract
for all maintenance activities and that all repairs are carried out by
Dräger.
● Properly trained service personnel must inspect and service this
product as detailed in the Maintenance section of this document.
● Use only genuine Dräger spare parts and accessories, or the proper
functioning of the product may be impaired.
● Do not use a faulty or incomplete product, and do not modify the
product.
● Notify Dräger in the event of any component fault or failure.
● The air supply shall meet the requirements for breathing air according
to EN 12021.
1.2 Definitions of alert icons
Alert icons are used in this document to provide and highlight text that
requires a greater awareness by the user. A definition of the meaning of
each icon is as follows:
WARNING
!
Indicates a potentially hazardous situation which, if not avoided,
could result in death or serious injury.
CAUTION
!
Indicates a potentially hazardous situation which, if not avoided,
could result in physical injury or damage to the product or
environment. It may also be used to alert against unsafe practices.
2 Description
2.1 Product overview
The Dräger PAS AirPack 2 is a robust trolley-mounted air supply system
that uses breathing air inputs to provide a medium-pressure output
(independent air supply) for breathing apparatus wearers.
Breathing air inputs are from high and/or medium-pressure sources. The
high-pressure input is from one or two breathing air cylinders – the
equipment has storage capacity for two K-sized (50 litre) cylinders. The
medium-pressure input is a regulated external supply from a factory airline
or compressor.
The PAS AirPack 2 is available with one or two pneumatic systems, each
comprising a cylinder, a hose reel and a pneumatic assembly (swept out in
Fig 1). Each pneumatic system is completely separate from the other, and
can supply air to one or two breathing apparatus wearers. Variants with
one pneumatic system can supply up to two breathing apparatus wearers;
variants with two pneumatic systems can supply up to four breathing
apparatus wearers.
Referring to Fig 1, the features and components of the PAS AirPack 2
pneumatic system are:
● The high-pressure input connectors (9) are standard cylinder-type
threaded connectors.
● The medium-pressure input connector (5) is a male quick connector
which has an internal non-return valve.
● There is a medium-pressure output connector on each hose reel (12),
and on the body of each pneumatic assembly (7). Each is a female
quick connector, which has a valve that self-seals when disconnected.
● A high-pressure gauge (2) indicates cylinder pressure.
● A medium-pressure gauge (3) indicates output pressure.
● A high-pressure whistle (10) sounds to indicate low cylinder pressure.
● A medium-pressure whistle (4) sounds to indicate low output pressure.
If the PAS AirPack 2 is using an external medium-pressure supply, the
whistle indicates that the external supply pressure is low.
● An internal pressure reducer converts the high-pressure input to a
medium-pressure output.
● A relief valve (6) in the medium-pressure system and a bleed valve (8)
on each high-pressure connector release air from the system when
operated.
● Each hose reel has 50 m of hose on a rotating drum. The drum has an
inertia brake that prevents overrun of the drum as the hose is pulled
out.
The features and components of the trolley are:
● Two wheels are on a fixed axle, and two are swivelling jockey wheels
for manoeuvrability. One of the jockey wheels has a foot operated
brake (11).
● Some of the variants have a lifting eye (1) on the centre column of the
trolley. The lifting eye is proof load tested, and the lifting eye arm is
stamped by an approved authority. The safe working load (SWL) is
250 kg. A Certificate of Conformance is included with the product.
● The lever (Fig 2, Item 1) operates a frame lock to allow lifting the
cylinder frame to a vertical position (as shown in Fig 2) for cylinder
fitting and removal.
2.2 Intended use
The PAS AirPack 2 is used with breathing air cylinders and an external
breathing air supply (factory airline or compressor) to provide a
medium-pressure output. When used with approved airline equipment, it
supplies breathing air to breathing apparatus wearers.
It is intended to be used with only the air cylinders connected
(self-contained use), or with the air cylinders and an external
medium-pressure supply connected (external-supply use). When it is used
with an external supply the cylinders provide a backup air supply.
The breathing apparatus and other accessories used with this product
must be assembled in an approved configuration. See Section 10 for the
compatible airline equipment and configurations. Dräger do not supply
K-sized cylinders, either individually or assembled to the PAS AirPack 2. It
is the responsibility of the user to ensure that the selected cylinder is
approved to PED97/23/EC and/or TPED1999/36/EC and/or to national
regulations. Contact Dräger for details of approved cylinders and further
information.
PAS ® AirPack 2 is a registered trade mark of Dräger
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2.3 Approvals
The Dräger PAS AirPack 2 conforms to EN 14593-1, and meets the
requirement of EC Council Directives PPE (89/686/EEC) and PED (97/23/EC).
PPE – EC Type examiner: DEKRA EXAM GmbH, Dinnendahlstrasse 9,
44809 Bochum, Germany. Notified Body No. 0158.
PPE (89/686/EEC) – Article 11B examiner: Lloyd's Register Quality
Assurance (LRQA), Hiramford, Middlemarch Office Village, Siskin Drive,
Coventry CV3 4FJ, United Kingdom. Notified Body No. 0088.
Where appropriate, the marking "F" on the apparatus and CAST
(compressed-air supply tube) indicates that both can be used where
flammability may be a risk. Marking on the compressed-air supply tube
indicates that the tube is heat resistant (H) and/or antistatic (S).
2.4 Use in potentially explosive atmospheres
● The PAS AirPack Series is type tested as suitable for use in potentially
explosive atmospheres. The combinations are suitable for use in
hazardous areas of Zone 1 and 2 for explosion group IIA and IIB and
for Zone 21 and 22.
2.4.1 Special conditions for safe use
The Airline Systems shall not be used in the vicinity of processes where high
charges are generated if explosive atmospheres are present (for example,
where rapid filling processes are carried out – big bag filling – or many actions
of fast limit surface separation are done). In such cases, hazardously high
charges of the Airline Systems may occur due to electrostatic induction.
The breathing apparatus and the compressed air cylinders which are used
in combination with the Airline Systems each have to meet the applicable
requirements of the equipment categories and explosion groups relevant
to the respective Airline System.
The Airline Systems have to be moved manually inside explosive
atmospheres by the user (pushing or pulling). It is mandatory to use floors
in Zone 1 and Zone 21 that are able to discharge electricity where dusts of
minimum ignition energies < 10 mJ are present.
If air supply hoses are used with a total length > 50 m, then the couplings
which are connected to the hoses in a conductive manner have to be
provided with an additional earth contact (after a hose length of 50 m) and
integrated into the operating eqipotential bonding.
● Do not charge the cylinder in a potentially explosive atmosphere.
Instructions for Use
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2.5 Explanation of marking and symbols
Refer to the relevant authority for explanation of approval body symbols
and markings. Examples of other marking on the product:
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08/09
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HP
MP
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3 Use
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10
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WARNING
!
The cylinder and airline air quality shall meet the requirements for
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breathing air according to EN 12021. Do not use oxygen or
oxygen-enriched air. The moisture content of breathing air should
be controlled within the EN 12021 limits to avoid freezing the
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apparatus.
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Carry out a risk assessment of the workplace to ensure that it is
not possible to connect to any airline supply other than breathable
air (e.g. Nitrox).
Before using airline equipment, ensure that the air supply meets
the air quality requirements, and complies with the airline
pressure, flow and hose requirements (see Section 8 and
Section 10), and has been issued with a permit for use if
necessary.
Position the PAS AirPack 2 in a safe and uncontaminated area
where it cannot be damaged, and apply the brake.
Dräger recommend that the user carries out a risk assessment to
establish local procedures to be followed in the event of failure of
the air supply.
CAUTION
!
Impact damage to the PAS AirPack 2 may prevent cylinder valve
connection or cause an air leak. Handle the equipment with care.
If there is requirement to lift the PAS AirPack 2, the organization
must have a formal lifting equipment management system. Lifting
equipment users must have the required competencies and
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comply with established lifting equipment and work practices.
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When remote wearers are connected to the PAS AirPack 2, a controller
must be appointed to monitor the gauges and whistles of the product
throughout the operation. The controller must maintain the air supply to the
wearers and must ensure that any precautionary or emergency signals are
conveyed to the remote wearers in line with local procedures and these
Instructions for Use.
3.1 Preparation for use
1. Carry out a visual inspection (see Section 3.4.1).
2. Fit the air cylinder or cylinders (see Section 3.4.2).
3. Carry out a full functional test (see Section 3.4.5).
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WARNING
!
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Incorrect airline equipment configurations may result in insufficient
air flow to breathing apparatus wearers or increase the possibility
of air supply failure. See Section 10 for the compatible airline
equipment and configurations.
Prepare the breathing apparatus for use (see the Instructions for
Use supplied with the breathing apparatus). Observe the safety
information and carry out all preparation and functional testing
tasks before use.
Do not use either of the PAS AirPack 2 pneumatic systems to
supply air to more than two breathing apparatus wearers at any
time. If a controller is appointed, and is required to wear breathing
apparatus and to connect to the equipment then only one other
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user is permitted.
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If the PAS AirPack 2 has two pneumatic systems, carry out the following
steps for each pneumatic system as required.
4. Pull out the hose as required and connect the airline equipment to the
output connector on the hose reel (Fig 1, Item 12). Use the output
connector on the pneumatic assembly (Fig 3) for connecting the
controller if required.
5. Depending on the required use, do one of the following:
○ Self-contained use – Fully open the cylinder valve.
○ External-supply use – Connect the external supply (see
Section 3.4.4).
Ensure that the cylinder valve is fully closed.
6. Put on the breathing apparatus and connect to the airline equipment
(Fig 4 shows a typical breathing apparatus connector).
3.2 During use
WARNING
!
An appointed controller or the breathing apparatus wearers must
monitor the PAS AirPack 2 gauges and whistles during use.
Procedures to warn and evacuate remote users must be in place.
The effective working duration of the equipment is dependent on
the initial air supply available and the breathing rate of the wearers.
Do not commence any operation using a cylinder that is less than
80 percent full.
At very high work rates the pressure in the face mask of a
breathing apparatus wearer may become negative at peak
inhalation flow.
● Breathe normally and proceed to the work area taking care with any
airline equipment.
● On receipt of an evacuation signal, withdraw immediately to a safe
area (see local instructions for full evacuation procedures).
● When the task is complete, withdraw to a safe area before removing
the breathing apparatus.
● The high-pressure and medium-pressure whistles indicate that there is
low pressure in the associated system. If a warning whistle sounds,
carry out the necessary actions depending on the configuration of the
PAS AirPack 2 (see Section 3.2.1 or 3.2.2).
– Dräger serial number
– Month and year of manufacture
– Dräger part number
– High pressure
– Medium pressure
– Relief valve
– Unlock and lock (cylinder frame)
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