Dräger PAS Micro Series User manual

PAS®Micro Series
Airline/Short duration respiratory protection equipment with PAS®ASV Instructions for Use
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PAS®is a registered trademark of Dräger, Dow Corning®and Molykote®are registered trademarks of Dow Corning Corporation 3359994 (A3-D-P) Page 1 of 3
3359994
© Dräger Safety UK Limited
Edition 05 – October 2018 (Edition 01 – July 2011)
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 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.
NOTICE
Indicates additional information on how to use the product.
2 Description
2.1 Product overview
This variant of the Dräger PAS®Micro Series provides respiratory
protection for working in a contaminated environment using the air
cylinder or an airline.
The equipment is available as a 10 minute or 15 minute short-
duration version. These are nominal durations available for self-
contained use of the equipment until a whistle sounds to warn the
wearer that there is low cylinder pressure. The nominal duration is
determined by the capacity (volume and pressure rating) of the
selected air cylinder – the actual duration is also dependent on the
rate at which the wearer uses air from the cylinder (the breathing
rate).
The features of the equipment are:
●The carrying system has a shoulder harness, a waist belt and
a cylinder strap on the rear.
●The pressure reducer (Fig 1, Item 5) connects directly on to the
air cylinder, and reduces the cylinder pressure to the medium
pressure required at the lung demand valve (Fig 1, Item 1).
The reducer has a whistle that sounds to warn the wearer that
there is low cylinder pressure.
●The pressure gauge (Fig 1, Item 3) shows the cylinder
pressure during use.
●The airline connector (Fig 1, Item 6) is a male quick coupling
that is used to connect an independent air supply for airline
use.
●The medium-pressure hose has a quick coupling (Fig 1,
Item 2) that allows rapid removal and fitting of the lung demand
valve when required.
●The Dräger PAS®ASV (automatic switch-over valve), air
cylinder and lung demand valve are described below.
2.1.1 PAS®ASV
The Dräger PAS®ASV (Fig 1, Item 4) allows the PAS®Micro to be
used with an independent air supply such as a factory airline or
other breathing air supply (e.g. Dräger PAS®AirPack). The switch-
over valve automatically switches between the airline supply and
the PAS®Micro air cylinder, maintaining an uninterrupted air
supply to the wearer during switching.
Refer to Fig 2
AL (airline) Input from an independent air supply
BA (breathing apparatus) Input from the PAS®Micro air
cylinder
LDV (lung demand valve) Output to the lung demand valve
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During airline use, the PAS®Micro is connected to a breathing-
quality independent air supply, and the PAS®Micro cylinder valve
is open. The PAS®ASV uses the independent air supply as the
primary supply of breathing air to the wearer, and the PAS®Micro
air cylinder as the secondary (or back-up) supply.
●If the independent air supply pressure remains above a preset
switching pressure the wearer breathes from the independent
air supply.
●If the independent air supply pressure falls below the preset
switching pressure, the PAS®ASV automatically switches to
supply the wearer from the air cylinder, and the PAS®ASV
whistle (Fig 2, Item 1) sounds. The whistle is supplied from the
air cylinder and therefore sounds continuously while the
wearer is breathing from the air cylinder.
●If the independent air supply pressure recovers (increases
above the preset switching pressure), the PAS®ASV switches
back to the independent air supply and the whistle stops.
See the technical data (Section 8) for the PAS®ASV operating
pressures.
2.1.2 Air cylinder
Cylinders are available with a 200 bar or 300 bar working pressure
rating, and in steel or composite materials. Only air cylinders listed
in the Dräger certification are approved for use with the
PAS®Micro. Contact Dräger for further information.
2.1.3 Lung demand valve (LDV)
A variety of Dräger lung demand valves are compatible with this
equipment, with the coupling (Fig 3, Item 1) selected to match the
face mask coupling (see table below):
LDV
coupling
Face mask
coupling
Type Coupling type
A P Positive
pressure
Push-in – Dräger specific
During use, the lung demand valve activates automatically as the
wearer breathes, and then regulates the breathing air supply into
the face mask in response to the breathing rate of the wearer.
●On positive-pressure systems, when the lung demand valve is
activated, the internal valve remains open until closed by the
user. Positive-pressure valves have a reset button (Fig 3,
Item 2) that closes the valve when required. Pressing the reset
button closes the internal valve to switch off the air flow through
the lung demand valve.
●On negative-pressure systems the internal valve closes
automatically to switch off the air flow through the lung demand
valve.
The lung demand valve can also be activated manually by
pressing the front button (Fig 3, Item 3) to open the internal valve
and activate air flow when required. During airline use only, the
front button can be pressed to deliver additional air
(supplementary air) into the mask when required by the wearer.
2.2 Intended use
When this product is used with an approved face mask, air
cylinder, lung demand valve and independent air supply, it
provides the wearer with respiratory protection for working in
contaminated or oxygen-deficient conditions. It is intended for use
in applications where a high level of respiratory protection is
required. The equipment is intended to be used for combination
airline/short duration applications, but it can also be used for short
duration only applications.
The air cylinder, face mask (full face mask conforming to EN 136
Class 2 or Class 3) and other accessories used with this product
must be certified Dräger components, assembled in an approved
configuration; otherwise the operation of the device may be
impaired. Contact Dräger for further information.
2.3 Limitations on use
This product is not approved for use in CBRN applications.
Use in potentially explosive atmospheres
●The PAS®Micro Series are type tested as suitable for use in
potentially explosive atmospheres. Electronic sub-assemblies
are ATEX certified. The combinations are suitable for use in
hazardous areas up to and including zone 0 and zone 20. The
combinations can be used in atmospheres containing gases of
the gas explosion group IIC, with the exception of
combinations using the f 2 range of face masks, which are only
suitable to be used in atmospheres containing gases of the gas
explosion group IIB.
●Do not charge the cylinder in a potentially explosive
atmosphere.
2.4 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).
3 Use
WARNING
The cylinder and airline 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).
Fill the PAS®Micro air cylinder to the full rated working
pressure prior to use, and do not commence any operation
using a cylinder that is less than 90 per cent full (or greater
when national regulations dictate).
Before using airline equipment, ensure that the
independent air supply meets the air quality requirements,
and complies with the airline pressure, flow and hose
requirements in the technical data (see Section 8), and has
been issued with a permit for use if necessary.
Position the source of the independent air supply in a safe
and uncontaminated area. Dräger recommend that a
controller should monitor and maintain the independent air
supply throughout any operation.
3.1 Preparation for use
3.1.1 Visual inspection
Carry out a visual inspection, checking the full breathing apparatus
including all component parts and accessories. Check that the
equipment is clean and undamaged, paying particular attention to
pneumatic components, hoses and connectors. Typical signs of
AE PE Positive
pressure
Screw-in – M45 x 3 to
EN 148-3
N RA Negative
pressure
Screw-in – 40 mm round
thread to EN 148-1
LDV
coupling
Face mask
coupling
Type Coupling type
!
1
2
36
4
5
1
3738/3737
BA
AL
LDV
1
2
3718
3
3717
12
3
12
4
3723
AL
LDV
5
3735
1 2 3
6
3736
7
3625
1
2
3
8
3626
9
3713

PAS®Micro Series
Airline/Short duration respiratory protection equipment with PAS®ASV Instructions for Use
i
3359994 (A3-D-P) Page 2 of 3
damage that may affect the operation of the breathing apparatus
include impact, abrasion, cutting, corrosion and discoloration.
Report damage to service personnel and do not use the apparatus
until faults are rectified.
3.1.2 Fitting the cylinder
1. Ensure that the cylinder is fully charged.
2. Place the carrying harness on a clean flat surface.
3. Fully extend the cylinder strap, shoulder straps and waist belt.
4. Check the threads of the cylinder valve port and the pressure
reducer. Ensure that the O-ring seal (Fig 4, Item 1) and the
sintered filter (Fig 4, Item 2) in the reducer are clean and
undamaged.
5. Referring to Fig 5, slide the cylinder through the cylinder strap
and align valve with the reducer. To prevent damage, ensure
that the cylinder remains clear of the hand wheel of the
pressure reducer while inserting the cylinder.
6. Align the cylinder with the centre of the carrying harness and
then screw the hand wheel of the pressure reducer on to the
cylinder valve (see direction arrow in Fig 5). Do not fully
tighten.
7. Referring to Fig 6, take up the slack in the cylinder strap (1) to
tighten around the cylinder and then pull the strap through the
buckle to secure (2). Insert the loose end of strap into the guide
loop (3).
8. Fully tighten the hand wheel hand tight. Do not use tools or
over tighten.
3.1.3 Functional testing
WARNING
If the breathing apparatus 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 apparatus until the fault condition is
rectified.
1. Positive-pressure systems: press the reset button
(Fig 3, Item 2) to switch off the valve.
2. Open the cylinder valve slowly, but fully, to pressurize the
system and ensure that cylinder is fully charged. The whistle
on the PAS®ASV sounds.
3. Fully close the cylinder valve.
4. Allow the air to vent from the PAS®ASV whistle and observe
the pressure gauge.
5. At approximately 70 bar, cover the whistle to stop the air flow
and then very slowly release the air. The whistle on the
PAS®Micro pressure reducer must commence in the range
110 to 100 bar.
6. Open the cylinder valve slowly, but fully, to pressurize the
system. The whistle on the PAS®ASV sounds.
7. To minimize cylinder air use: immediately connect the
independent air supply to the male coupling (Fig 1, Item 6),
and if the independent air supply has a shut-off valve, open the
valve. The whistle on the PAS®ASV stops.
8. Check for audible leaks. 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.
WARNING
Do not direct the air flow on to the face, eyes or skin.
9. Press the front button (Fig 3, Item 3) to activate air flow from
the valve for 3–5 seconds. Unobstructed air will flow from the
outlet of the lung demand valve.
10. Positive-pressure systems: press the reset button
(Fig 3, Item 2) to switch off the valve.
11. Isolate and disconnect the independent air supply, and fully
close the cylinder valve.
12. Wait one minute and then observe the pressure gauge and
reopen the cylinder valve. The gauge must not show an
increase in pressure of more than 10 bar (one radial marking
on the gauge face). Investigate and repair any leak before use
(see Section 4). If necessary, use a soapy solution to locate
the leak.
13. Close the cylinder valve and vent the system as follows:
○Positive-pressure systems: cover and seal the lung
demand valve outlet with the palm of the hand. Press the
front button (Fig 3, Item 3) to activate air flow and then lift
the hand to very slowly vent.
○Negative-pressure systems: carefully press the front button
(Fig 3, Item 3) to very slowly vent.
14. The PAS®ASV whistle begins to sound at the preset switching
pressure, indicating that the valve has switched from the
independent air supply (AL) to the PAS®Micro air cylinder
(BA). The whistle on the pressure reducer will also sound as
the pressure falls. Both whistles will cease when the system is
vented.
15. Positive-pressure systems: press the reset button
(Fig 3, Item 2) to switch off the valve.
3.1.4 Putting on the PAS®Micro (ready position)
See also Fig 1 which shows the PAS®Micro worn in the ready
position.
1. Fully loosen the shoulder straps and waist belt and put on the
apparatus.
2. Check that the shoulder pads are not twisted and take the
weight of the system on the shoulders by pulling the shoulder
straps. Do not fully tighten at this stage.
3. Close the waist belt buckle and pull the ends of the waist belt
until it fits securely and comfortably.
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!
4. Pull the shoulder straps until the breathing apparatus rests
securely and comfortably on the hips. Do not over tighten.
5. Check that the face mask port, and the lung demand valve
coupling and O-ring are clean and undamaged.
6. Connect the lung demand valve to the face mask as follows:
○Push-in coupling: press into the port of the face mask until
it latches in position. Check the attachment by gently
attempting to pull the coupling apart.
○Screw-in coupling: screw into the port of the face mask and
tighten hand tight. When the lung demand valve is fitted to
the face mask, the connector can swivel to allow for head
and body movement of the wearer.
7. Put the neck strap of the face mask over the head, and then
insert the neck strap stud into the hole in the centre strap of the
head harness.
3.1.5 Putting on the face mask
WARNING
Correct fit of the face mask can only be achieved if the
complete mask seal makes contact with skin. Head hair,
facial hair (including beard stubble and sideburns),
earrings, other facial piercings and normal spectacles will
interfere with the mask seal and are not permitted in the
sealing area. Additionally, head hair that could affect the
face mask fit (buns, pony-tails, hairpieces, etc.) is not
permitted.
NOTICE
Refer also to the face mask Instructions for Use.
1. Positive-pressure systems: press the reset button
(Fig 3, Item 2) to switch off the valve.
2. Open the cylinder valve slowly, but fully, to pressurize the
system. The PAS®ASV whistle is supplied from the air cylinder
and therefore sounds immediately.
3. Detach the neck strap stud from the centre strap of the head
harness.
4. Spread the head harness (Fig 7). Place the chin into the chin
cup of the face mask and pull the harness over the head
locating the harness centre plate on back of the head.
5. Referring to Fig 8, tighten both lower (1) and then upper straps
(2) evenly towards the back of the head. If necessary, tighten
the centre strap (3).
6. Breathe normally and carry out the mask function check.
3.1.6 Mask function check
1. Close the cylinder valve and breathe normally to empty the
system of air. When empty, the face mask should hold on to
the face to indicate a positive seal. If a leak is detected,
readjust the head harness and retest.
2. Immediately reopen the cylinder valve and recommence
breathing – exhaled air should flow easily out of the exhalation
valve.
When the function check has been satisfactorily completed,
breathe normally and proceed to the work area.
3.2 During use
The nominal duration (10 or 15 minutes) applies to a PAS®Micro
with a fully charged cylinder, and refers to the usage time until the
whistle on the pressure reducer sounds to warn the wearer that
there is low cylinder pressure. The wearer should be in a safe area
before the whistle on the pressure reducer sounds.
3.2.1 Self-contained use (not supplied by an airline)
WARNING
The available duration starts from the time that the cylinder
valve is opened, and is dependent on the capacity of the
cylinder and the breathing rate of the wearer.
Dräger strongly advise that the front button (Fig 3, Item 3)
is not pressed to deliver supplementary air into the mask
during self-contained use. Using supplementary air would
use air from the cylinder and reduce the operating duration
of the air supply.
●Regularly check the reading on the cylinder pressure gauge.
●If the whistle on the pressure reducer sounds, there is low
cylinder pressure. Immediately leave the hazardous area by
the shortest and safest route.
●The PAS®ASV whistle sounds continuously.
3.2.2 Airline use
WARNING
Dräger recommend that the user carries out a risk
assessment to establish local procedures to be followed in
the event of failure of the independent air supply.
If the PAS®ASV whistle sounds at any time during an
operation, the PAS®ASV has switched to supply the
wearer from the PAS®Micro air cylinder. If you continue to
work while breathing from the air cylinder, regularly check
the cylinder pressure gauge – ensure that the remaining air
in the air cylinder allows sufficient time to evacuate to a
safe area.
During airline use, at very high work rates the pressure in
the face mask may become negative at peak inhalation
flow.
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NOTICE
The PAS®Micro cylinder valve must remain open during
airline use.
●Connect the independent air supply to the male coupling
(Fig 1, Item 6), and if the independent air supply has a shut-off
valve, open the valve. The whistle on the PAS®ASV stops –
this indicates that the wearer is now breathing from the airline.
●If additional air is required, briefly press and release the front
button (Fig 3, Item 3) to deliver a single jet of supplementary air
into the mask.
●When the task is complete or when advised by a controller
leave the hazardous area:
○Disconnect from the independent air supply (see
Section 3.2.1), or
○Remain connected and carefully withdraw the airline hose.
Evacuation procedure (independent air supply failure)
If the independent air supply fails, the wearer should proceed in
line with established local procedures (see warnings above).
●To evacuate proceed as follows:
a. Disconnect the independent air supply from the
PAS®Micro.
b. Immediately leave the hazardous area by the shortest and
safest route. The PAS®ASV whistle is supplied from the air
cylinder and therefore sounds continuously during the
evacuation.
When in a safe area, remove the lung demand valve from the face
mask if necessary and continue to breathe normally.
3.3 After use
WARNING
Do not remove the equipment until in safe area, clear of
hazard.
CAUTION
Do not drop or throw down equipment as damage could
occur.
1. Loosen the face mask straps.
○Positive-pressure systems: as the seal between the mask
and the face is broken, press the reset button (Fig 3,
Item 2) to switch off the valve.
2. Remove the face mask and fully extend all of the straps of the
head harness.
3. If the independent air supply is still connected, isolate and
disconnect the supply.
4. Fully close the cylinder valve.
5. Press the front button (Fig 3, Item 3) to fully vent the system.
6. Remove the lung demand valve from the face mask (Fig 9 –
push-in coupling shown).
7. Open the waist belt buckle, lift the shoulder strap buckles to
loosen the harness, and then remove the equipment.
8. Carry out the after use maintenance tasks in the maintenance
table (see Section 5.1).
4 Troubleshooting
The troubleshooting guide shows fault diagnosis and repair
information applicable to breathing apparatus users. Further
troubleshooting and repair information is available in Instructions
for Use supplied with associated equipment (e.g. face mask and
air cylinder).
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 breathing apparatus, including out-of-use
apparatus, in accordance with the maintenance table. Record all
service details and testing. Refer also to the Instructions for Use
for the lung demand valve, face mask and other associated
equipment.
Symptom Fault Remedy
High-pressure air
leak or failed leak test
Loose or dirty cylinder
connector
Disconnect, clean and
reconnect the connector
and retest
Faulty hose or
component
Substitute user
replaceable accessories
and retest
Air leak from
medium-pressure
hose connection at
the pressure reducer
(safety relief valve)
Faulty O-ring, retainer,
spring or pressure
reducer
Service task
High or low medium
pressure
Pressure reducer fault Service task
Poor sounding
whistle
Whistle dirty Clean whistle flute and
retest
Whistle not
functioning correctly
Activation mechanism
fault
Service task
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PAS®Micro Series
Airline/Short duration respiratory protection equipment with PAS®ASV Instructions for Use
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3359994 (A3-D-P) Page 3 of 3
Additional inspection and testing may be required in the country of
use to ensure compliance with national regulations.
Notes
ODräger 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.
3. For type A check the O-ring on the lung demand valve; and for
type ESA check the outer surface of the male part of the push-
in connector on the lung demand valve. As a guide, lubricant
should be felt on the fingers but not seen. If relubrication is
required, lightly apply Dow Corning®Molykote®111 (other
lubricants are not tested and may damage the equipment).
5.2 Maintenance tasks
5.2.1 Removing the cylinder
WARNING
High-pressure air release may cause injury to the user or
other personnel near the breathing apparatus. Close the
cylinder valve and fully vent the system before attempting
to disconnect the air cylinder.
1. Close the cylinder valve and press the front button
(Fig 3, Item 3) to fully vent the system.
2. Loosen the cylinder strap.
3. Disconnect the cylinder valve from the pressure reducer.
4. Remove the cylinder. To prevent damage, ensure that the
hand wheel of the pressure reducer remains clear of the
cylinder.
5.2.2 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).
●To prevent overcharging of the cylinder, Dräger recommend
using a pressure-limiting device on the charging compressor.
Component/
System
Task After
use
Every
month
Every
year
Every
six
years
Complete
equipment
Visual inspection
(see Note 1 and
Section 3.1.1)
OO
Functional test
(see Section 3.1.3)
OO
Flow and static tests (see
Note 2)
O
Lung
demand
valve O-ring
Check and lubricate if
necessary (see Note 1)
O
Pressure
reducer
Medium-pressure check
(see Note 2)
O
Renew the high-pressure
connector O-ring and
sintered filter (see
Note 2)
O
Pressure
reducer and
PAS®ASV
Overhaul – Contact
Dräger for the Repair &
Exchange (REX) service
O
Cylinder Charge to correct
pressure
(see Section 5.2.2)
O
Check the initial test date
stamped on the cylinder
O
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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!
5.3 Cleaning and disinfecting
CAUTION
Do not exceed 60 °C for drying, and remove components
from the drying facility immediately when dry. Drying time
in a heated dryer must not exceed 30 minutes.
Do not immerse pneumatic or electronic components in
cleaning solutions or water.
If water is trapped and then freezes inside the pneumatic
system of the breathing apparatus (such as the lung
demand valve), operation will be impaired. Prevent any
liquid from entering, and thoroughly dry the breathing
apparatus after cleaning to prevent this from occurring.
For information about suitable cleaning and disinfecting
agents and their specifications refer to document 9100081
on www.draeger.com/IFU.
Refer also to the Instructions for Use for the lung demand valve,
face mask and other associated equipment.
●Use only clean lint-free cloths
1. Clean the breathing apparatus 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, in a heated dryer 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. Note also the following:
●Extend the shoulder straps, the waist belt and the head
harness straps of the face mask.
●For hygienic storage, place the face mask in a protective bag
(contact Dräger for supply of a suitable bag).
●Route rubber hoses in such a way that the bend radius is not
too acute and the hose is not stretched, compressed or
twisted.
●Fix the apparatus securely to any raised mounting point to
prevent it from falling.
7 Disposal
When required, dispose of the PAS®Micro in accordance with
national or local regulations for waste disposal.
8 Technical data
●High-pressure connector: 200 bar or 300 bar, standard G5/8”
as per EN 144-2.
●Independent air supply (single user):
○Airline pressure and flow requirements: pressure 6 to
10 bar, air flow rate at least 550 litres/minute. Important
note: do not exceed 10 bar.
○Airline hose requirements: maximum of 100 m of Dräger
approved hose. Important note: no more than four
individual hoses (a maximum of five hose connections) are
permitted in the airline.
●PAS®ASV: whistle activates and switch-over occurs in the
range: 3.5 to 5.5 bar (airline pressure).
●Pressure reducer: whistle commences in the range:
110 to 100 bar (cylinder pressure).
●Whistles cease in the range: 1.75 to 0 bar (cylinder pressure).
●Whistle volume: >90 dBA.
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