Dräger PAS AirPack Instructions For Use

®
PAS AirPack
Pressure Reducer
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 recommends 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 Pressure Reducer is a pneumatic valve and
gauge set that uses a high-pressure breathing air input to provide a
medium-pressure output (independent air supply) for one or two breathing
apparatus wearers. The input is from a breathing air cylinder, or from a
regulated external supply such as a factory airline or compressor.
Referring to Fig 1, the features and components of the Pressure Reducer are:
● The high-pressure input connector (5) is a standard cylinder-type
threaded connector.
● The output connector (3) is a female quick connector, which has a
valve that self-seals when disconnected.
● A high-pressure gauge (1) indicates input pressure.
● A medium-pressure gauge (2) indicates output pressure.
● A whistle (6) sounds to indicate low input pressure from the cylinder or
external supply.
● An internal pressure reducer converts the high-pressure input to a
medium-pressure output.
● A relief valve (4) in the medium-pressure system releases air from the
Pressure Reducer when operated.
2.2 Intended use
The Pressure Reducer is used with a high-pressure breathing air supply to
provide a medium-pressure output. When used with approved airline
equipment, it supplies breathing air to one or two breathing apparatus
wearers.
The breathing apparatus, cylinder and other accessories used with this
product must be assembled in an approved configuration. See Section 9 for
the compatible airline equipment and configurations. Contact Dräger for
further information.
2.3 Approvals
The European standards, guidelines, and directives according to which
this product is approved are specified in the declaration of conformity (see
declaration of conformity or www.draeger.com/product-certificates).
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.
3357514
© Dräger Safety UK Limited
Edition 08 – November 2018 (Edition 01 – January 2009)
Subject to alteration
PAS ® is a registered trademark of Dräger
1
1
6
5
2 3
3829
4
1
2
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:
BRBA-1359 – Dräger serial number
08/09 – Month and year of manufacture
3353261 – Dräger part number
Where appropriate, the marking "F"
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).
3 Use
WARNING
The cylinder or external supply air quality shall meet the
requirements for 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 apparatus.
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 9), and has been issued with a permit for use if necessary.
Position the Pressure Reducer in a safe and uncontaminated area,
and ensure that it is securely held or placed in a position where it
cannot be damaged.
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 Pressure Reducer may prevent cylinder
valve connection or cause an air leak. Handle the equipment with
care.
When remote wearers are connected to the Pressure Reducer, a controller
must be appointed to monitor the gauges and whistle 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. Connect an air cylinder or a regulated external supply (see Section 3.4.2).
3. Carry out a full functional test (see Section 3.4.4).
Instructions for Use
WARNING
Incorrect airline equipment configurations may result in insufficient
air flow to breathing apparatus wearers or increase the possibility
2
of air supply failure. See Section 9 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 the Pressure Reducer 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 user is permitted.
3
4. Connect the airline equipment (extension hoses, Y-piece, etc.) to the
medium-pressure output connector (Fig 2).
4
5. Fully open the cylinder valve.
6. Put on the breathing apparatus and connect to the airline equipment
(Fig 3 shows a typical breathing apparatus connector).
3.2 During use
2796
WARNING
An appointed controller or the breathing apparatus wearers must
monitor the Pressure Reducer gauges and whistle 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 per cent full.
At very high work rates the pressure in the face mask of a
breathing apparatus wearer may become negative at peak
3248
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 whistle indicates that there is low pressure in the air cylinder or from
the external supply. If the whistle sounds, breathing apparatus wearers
must proceed in line with breathing apparatus Instructions for Use and
local procedures.
3.3 After use
WARNING
Do not remove the breathing apparatus until in a safe breathing
environment.
1. Once in a safe area, remove all breathing equipment.
2. Close the cylinder valve, or the shut-off valve of the external supply.
3. Pull the handle of the relief valve (Fig 1, Item 4) to vent all air from
the system.
3774
4. Disconnect any airline equipment from the Pressure Reducer and fit all
protection caps.
5. Disconnect the air cylinder or external supply if necessary (see
Section 3.4.3).
6. Carry out the after use maintenance tasks in the maintenance table
(see Section 5.1).
3.4 Common user tasks
3.4.1 Visual inspection
on the apparatus and
Check that the Pressure Reducer is clean and undamaged, paying
particular attention to pneumatic components and connectors. Typical
signs of damage that may affect the operation of the Pressure Reducer
include impact damage, abrasion, cutting, corrosion and discolouration.
Report damage to service personnel or Dräger and do not use the
Pressure Reducer until faults are rectified.
3.4.2 Connecting an air cylinder or external supply
Air cylinder: Only connect fully charged cylinders that are approved for
use, fully serviceable and in date. Use 200 bar or 300 bar, steel or
composite, breathing air cylinders.
External supply: Only connect a regulated 200 bar to 300 bar breathing
air supply from a factory airline or compressor. If the external supply has a
pressure-regulating device, set the pressure in the range 200 bar to 300
bar.
1. Ensure that air cylinder or external supply has a compatible connector
(see Section 8).
2. Ensure that the equipment is securely held.
3. Check the outlet port of the air cylinder or external supply, and ensure
that the O-ring (Fig 4, Item 1) and the sintered filter (Fig 4, Item 2) in
the input connector are clean and undamaged.
4. Align the cylinder or external supply with the input connector of the
Pressure Reducer. Tighten the hand wheel hand tight. Do not use tools
or over tighten.
3.4.3 Disconnecting an air cylinder or external supply
WARNING
High-pressure air release may cause injury to the user or other
personnel near the breathing apparatus. Close the cylinder valve
or shut-off valve and fully vent the system before attempting to
disconnect an air supply.
1. Close the cylinder valve, or the shut-off valve of the external supply.
2. Pull the handle of the relief valve (Fig 1, Item 4) to vent all air from
the system.
3. Disconnect the high-pressure input connector from the air supply.
Draeger Safety UK Limited
Ullswater Close
Blyth, NE24 4RG
United Kingdom
Tel +44 1670 352 891
Fax +44 1670 356 266
www.draeger.com
3357514 (A3-D-P) Page 1 of 2