Dräger PAS AirPack User manual

PAS®AirPack
Pressure Reducer Instructions for Use
i
PAS®is a registered trademark of Dräger 3357514 (A3-D-P) Page 1 of 2
3357514
© Dräger Safety UK Limited
Edition 08 – November 2018 (Edition 01 – January 2009)
Subject to alteration
Draeger Safety UK Limited
Ullswater Close Tel [phone]
Blyth, NE24 4RG Fax [phone]
United Kingdom www.draeger.com
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.
!
!
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” 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).
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).
!
!
WARNING
Incorrect airline equipment configurations may result in insufficient
air flow to breathing apparatus wearers or increase the possibility
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.
4. Connect the airline equipment (extension hoses, Y-piece, etc.) to the
medium-pressure output connector (Fig 2).
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
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
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.
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
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.
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PAS®AirPack
Pressure Reducer Instructions for Use
i
3357514 (A3-D-P) Page 2 of 2
3.4.4 Functional testing
WARNING
If the breathing equipment fails to meet any of the standards or
parameters described in the functional tests, or if an immediate
leak is evident, there is a system fault. Report the fault to trained
service personnel or contact Dräger. Do not use the breathing
equipment until the fault condition is rectified.
1. Fully open the cylinder valve, or the shut-off valve of the external
supply.
2. Check the pressures indicated on the pressure gauges:
○Air cylinder use: The high-pressure gauge must indicate at least 80%
of the cylinder maximum pressure.
○External supply use: The high-pressure gauge must indicate 200 bar
to 300 bar.
○The medium-pressure gauge must indicate 6 bar to 10 bar.
3. Fully close the cylinder valve, or the shut-off valve of the external
supply.
4. Wait one minute and then observe the high-pressure gauge and
reopen the valve. The gauge must not show an increase in pressure of
more than 10 bar. If there is any leak, investigate and repair the leak
before use (see Section 4). If necessary, use a soapy solution to locate
the leak.
5. Fully close the valve again.
6. Pull the handle of the relief valve (Fig 1, Item 4) to vent the air very
slowly and observe the high-pressure gauge. The whistle must
commence in the range 60 bar to 50 bar.
7. Continue to pull the handle of the relief valve to fully vent the system.
4 Troubleshooting
Disconnect or replace any associated equipment and retest before
referring to the troubleshooting table.
Contact service personnel or Dräger when the remedy information
indicates a service task, or if the symptom remains after all remedy actions
have been attempted.
5 Maintenance
5.1 Maintenance table
Service and test the Pressure Reducer, including out-of-use equipment, in
accordance with the table below. Record all maintenance in the equipment
log book. See also the maintenance information for any associated
breathing equipment.
Additional inspection and testing may be required in the country of use to
ensure compliance with national regulations governing the use,
maintenance, examination and testing of the compressed-air equipment
as described in this document.
Notes
Dräger recommendations
1. Clean the equipment if it is dirty. If it the equipment has been exposed
to contaminants, disinfect any components that come into direct and
prolonged contact with the skin.
2. These maintenance tasks may only be carried out by Dräger or trained
service personnel. Details of the tests are contained in the technical
manual which is issued to service personnel that have attended a
relevant Dräger maintenance course.
5.2 Air cylinder charging
WARNING
Air quality for compressed-air cylinders must conform to
requirements of EN 12021.
●Refer also to the instructions supplied with the cylinder and the
charging unit for recharging the cylinder.
●Only charge compressed-air cylinders which:
○Conform to national standards.
○Feature the original manufacturer’s test date and test mark.
○Have not exceeded the test date indicated on the cylinder by the last
testing station.
○Are not damaged.
●To prevent ingress of moisture into the cylinder, ensure that the
cylinder valve remains closed until connected to the charging unit.
●Recharge to the rated working pressure of the cylinder. Dräger
recommend a charge rate of 27 bar/minute (rapid charging will
increase the temperature resulting in an incomplete charge).
Symptom Fault Remedy
High-pressure or
medium-pressure air
leak
Loose/damaged
connector or faulty seal
Reconnect or tighten
connectors and retest.
Pressure reducer leak Service task
High or low medium-
pressure
Pressure reducer out of
specification
Service task
Poor sounding whistle Dirt Clean and retest
Whistle not functioning
correctly
Defective activation
mechanism
Service task
Component/
System
Task After
use
Every
month
Every
year
Every
six
years
Complete
equipment
Visual inspection (see
Note 1 and Section 3.4.1)

Functional test (see
Section 3.4.4)

High-pressure
input connector
Renew the O-ring and
sintered filter (see Note 2)

Pressure
reducer
Overhaul – Contact
Dräger for the Repair &
Exchange (REX) service

Cylinder Charge to correct
pressure (see Section 5.2)

Check the initial test date
stamped on the cylinder

Cylinder pressure test and
recertification
Carry out in line with national
regulations
Cylinder valve Basic overhaul During cylinder pressure test
or on condition
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!
●To prevent overcharging of the cylinder, Dräger recommend using a
pressure-limiting device on the charging compressor.
5.3 Cleaning and disinfecting
CAUTION
Do not immerse the PAS AirPack Pressure Reducer in water or
cleaning solutions and do not place the PAS AirPack Pressure
Reducer in a heated drying facility.
For information about suitable cleaning and disinfecting agents
and their specifications refer to document 9100081 on
www.draeger.com/IFU.
Refer also to the cleaning and disinfecting requirements for any associated
breathing equipment.
●Use only clean lint-free cloths
1. Clean the PAS AirPack Pressure Reducer manually using a cloth
moistened with cleaning solution to remove excess dirt.
2. Apply disinfecting solution to all internal and external surfaces.
3. Rinse all components thoroughly with clean water to remove all
cleaning and disinfecting agents.
4. Dry all components using a dry cloth, or in air.
5. Contact service personnel or Dräger if disassembly of pneumatic or
electronic components is required.
6 Storage
Store the equipment between -15 °C and +25 °C. Ensure that the
environment is dry, free from dust and dirt, and does not subject the
equipment to wear or damage due to abrasion. Do not store the equipment
in direct sunlight.
7 Disposal
When required, dispose of the Pressure Reducer in line with local or
national regulations for waste disposal.
8 Technical data
Operating conditions
●Temperature: -30 to +60 °C.
●Usage area: suitable for indoor and outdoor use.
High-pressure input
●Input connector: 200 bar or 300 bar, standard G5/8” connector as per
EN 144-2.
●Input: 200 bar or 300 bar breathing air cylinder, or 200 bar to 300 bar
regulated external supply.
Medium-pressure output
●Output connector: Dräger female quick connector (compatible with
CEJN 344 and Rectus 95KS series).
●Output: 6 bar to 10 bar (8 bar nominal) breathing air at a flow rate of
>600 litres/min.
Whistle operation
●Whistle commences in the range: 60 bar to 50 bar.
●Whistles cease in the range: 1.75 bar to 0 bar.
●Whistle volume: >90 dBA.
9 Compatible airline equipment and
configurations
Breathing air supply equipment
High-pressure supply (see Section 8
for specification and connector type)
Dräger supply, control and monitoring equipment
Dräger PAS AirPack Pressure
Reducer
Airline equipment (approved to the relevant EN standard)
Extension hose (lengths ranging
from 3 m to 50 m available from
Dräger)
Y-piece
Hose reel (Dräger hose reel has
50 m of hose)
Airline filter unit
In-line medium-pressure whistle
!
'
9.1 Airline equipment configurations
WARNING
Airline equipment must allow the input pressure and flow specified
in the breathing apparatus instructions to be met. Incorrect
configurations may result in insufficient air flow to breathing
apparatus wearers or increase the possibility of air supply failure.
9.1.1 Dräger airline equipment and breathing apparatus
No more than five connections are permitted per line on the output side of
the Pressure Reducer (a Y-piece is treated as two connections).
Additionally, the maximum combined length of the extension hoses is
100 m. The figures below (not to scale) show some examples of the
maximum number of connections (C1 to C5) and maximum hose lengths
that are permissible in an output configuration using Dräger equipment.
One breathing apparatus wearer
Two breathing apparatus wearers
Two breathing apparatus wearers (with stand-alone hose reel)
Breathing apparatus
Airline set (EN 14593-1)
Escape/airline set with automatic
switch-over valve (ASV) and airline
connector (EN 402/EN 14593-1)
Working set with automatic switch-
over valve (ASV) and airline
connector (EN 137/EN 14593-1)
!
45 m
C1 C2 C3 C4 C5
45 m
5 m 5 m
3271
30 m
C1 C2
30 m
C3
20 m
C4
C5
C5
C4
20 m
3270
30 m 50 m
(HOSE REEL)
10 m
10 m
C1 C2 C3
C4
C4
C5
C5
(HOSE REEL) 3272