Dräger PAS Micro Series User manual

PAS®Micro Series
Self-contained respiratory protection equipment Instructions for Use
i
3352430 (A3-D-P) Page 1 of 2
3352430
© Dräger Safety UK Limited
Edition 09 – November 2018 (Edition 01 – October 2005)
Subject to alteration
Draeger Safety UK Limited
Ullswater Close Tel [phone]
Blyth, NE24 4RG Fax [phone]
United Kingdom www.draeger.com
1 Safety-related information
●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.
●All approved respiratory equipment shall be selected, fitted, used, and
maintained in accordance with OSHA, and other applicable regulations.
●The air supply shall meet the requirements for breathing air according
to CGA G-7.1 Grade D or higher quality.
2 Conventions used in this document
2.1 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. It may also be used to alert against unsafe
practices.
NOTICE
Indicates a situation which, if not avoided, could result in damage to the
product or environment.
2.2 Registered trademarks
The trademarks listed are only registered in certain countries and not
necessarily in the country in which this material is sold.
2.3 Abbreviations
3 Description
3.1 Product overview
This variant of the Dräger PAS®Micro series uses breathing air from a
compressed air cylinder to provide respiratory protection for working in a
contaminated (IDLH) environment.
The equipment is classified by NIOSH with a prescribed service time of
15 minutes. The actual service time could vary from this value depending
on the cylinder pressure at the start of the operation and the rate at which
the wearer uses air (the respiratory rate).
●The first-stage regulator (Fig A, Item 4) connects to the cylinder, and
reduces the cylinder pressure to the medium pressure required at the
lung demand valve (Fig A, Item 1).
●The whistle on the first-stage regulator is an end of service time
indicator (EOSTI). The whistle commences to provide an alarm when
the remaining service time of the equipment is reduced to 25 % of the
rated service time.
●The pressure gauge (Fig A, Item 3) displays the cylinder pressure
during use.
●The carrying system has a shoulder harness, a waist belt, and a
cylinder strap on the rear.
3.1.1 Compressed air cylinder
The compressed air cylinder is a specific composite cylinder with a working
pressure rating of 4500 psi. The cylinder valve has an integral pressure
gauge. See the cylinder instructions for use for further information.
3.1.2 Lung demand valve
The features and components of the Dräger lung demand valves approved
for use with PAS®Micro are:
●The lung demand valve switches on automatically as the wearer
breathes (first-breath activation), and then regulates the air supply into
the mask in response to the respiratory rate of the wearer.
●The reset button (Fig B, Item 1) is used to switch off the air flow
through the lung demand valve.
●The front button (Fig B, Item 2) is used to switch on the lung demand
valve manually.
●The bypass button (Fig B, Item 3) is used to activate an internal valve
which supplies additional air into the mask.
○Pressing, turning, and then releasing the bypass button turns the
additional air supply on/off. The additional air supply is: off when
the red dots are aligned; on when the red dots are misaligned.
○Pressing and releasing the bypass button with the red dots aligned
supplies a short jet of additional air.
●The outlet (Fig B, Item 4) is a male push-in connector with a sealing O-
ring.
●The lung demand valve is either integral or removable. On integral
variants, the medium-pressure hose connects directly to the first-stage
regulator. Removable variants have a medium-pressure coupling
(Fig A, Item 2) which allows quick removal and fitting of the lung
demand valve when required.
●A Dräger NFPA flushing-type lung demand valve is approved for use
with this product. When used, it provides extra protection in
contaminated environments.
See the lung demand valve instructions for use for further information.
3.1.3 Face mask
A number of Dräger face masks are approved for use with PAS®Micro.
See the face mask instructions for use for information about the mask.
3.2 Intended use
When used with an approved face mask, compressed air cylinder, and
lung demand valve, the product provides the wearer with respiratory
protection for working in contaminated or oxygen-deficient conditions.
The face mask, air cylinder, lung demand valve, and other accessories
used with this product must be listed in the Dräger approval matrix. The
product must be assembled in an approved configuration, or operation of
the device could be impaired. Contact Dräger for further information.
3.3 Limitations on use
●This product is not approved for use in firefighting or CBRN applications.
●When the PAS®Micro is used with the Dräger FPS 7000 face mask,
only the Dräger NFPA flushing-type lung demand valve can be used.
3.4 Approvals
The Dräger PAS®Micro self-contained respiratory protection equipment
conforms to the requirements of NIOSH. The equipment must only be used
with compressed air cylinders that are approved by NIOSH.
4 Use
WARNING
The service time of the equipment depends on the initial air supply
available and the respiratory rate of the wearer.
►Charge the air cylinder to its full rated pressure before use.
►Do not commence any operation using a cylinder that is less than 90 % full.
CAUTION
Equipment damage could cause the release of high-pressure air.
►Do not apply excessive force or use tools to open or close the cylinder
valve.
►Do not drop or throw down the equipment.
4.1 Preparation for use
4.1.1 Visual inspection
Carry out a visual inspection, checking the full respiratory protection
equipment, 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 damage
that may affect the operation of the equipment include impact, abrasion,
cutting, corrosion and discoloration. Report damage to service personnel
or Dräger, and do not use the equipment until faults are rectified.
4.1.2 Fitting the cylinder
1. Ensure that the cylinder is fully charged.
2. Place the equipment on a clean flat surface.
3. Fully extend the cylinder strap.
4. Check the threads of the cylinder valve and first-stage regulator.
5. Ensure that the O-ring (Fig C, Item 1) is clean and undamaged.
6. Insert the cylinder through the cylinder strap (Fig D), ensuring that it
remains clear of the hand wheel of the first-stage regulator to prevent
damage. Align the cylinder valve with the first-stage regulator.
7. Connect first-stage regulator to the cylinder valve. Do not fully tighten.
8. Secure the cylinder strap (Fig E):
a. Take up the slack to tighten the cylinder strap (1).
b. Pull the strap through the buckle to secure (2).
c. Insert the strap end into the securing band (3).
4. Fully hand tighten the hand wheel. Do not use tools or over tighten.
4.1.3 Functional testing – High-pressure leak test and whistle test
WARNING
If the equipment fails to meet any of the standards or parameters in the
functional tests, or if an immediate leak is evident, there is a system fault.
►Investigate and repair any fault before use, or report the fault to
service personnel or Dräger. Do not use the equipment until the fault
condition is rectified.
1. For equipment with a medium-pressure coupling (Fig A, Item 2),
disconnect and then reconnect the male coupling. To connect, press
the male coupling into the female coupling until an audible click is
heard. If there is any difficulty disconnecting or connecting, see the
troubleshooting information (Section 5).
2. Press the reset button (Fig B, Item 1).
3. Open the cylinder valve slowly, but fully, to pressurize the system.
During pressurization the whistle will sound briefly.
○After storage at temperatures below 32 °F (0 °C), leakage could
be observed when the cylinder valve is initially opened due to ice
formation.
– If leakage is observed from the lung demand valve, press the
front button (Fig B, Item 2) to allow a rush of air to pass
through the lung demand valve and then quickly press the
reset button (Fig B, Item 1). Resume normal operation.
– If leakage still occurs, remove the equipment from service and
report the fault to service personnel or Dräger.
4. Fully close the cylinder valve.
5. After 1 minute, reopen the cylinder valve while observing the pressure
gauge.
○The gauge must not show an increase of more than 200 psi.
6. Fully close the cylinder valve.
7. Cover the lung demand valve outlet with the palm of the hand and
press the front button (Fig B, Item 2).
8. Carefully lift the palm of the hand to slowly vent the system until the
whistle activates, and observe the pressure displayed on the gauge.
○The whistle must commence in the range 1215 to 1035 psi.
9. Press the reset button (Fig B, Item 1).
4.1.4 Putting on the PAS®Micro (ready position)
See also Fig A which shows the PAS®Micro worn in the ready position.
1. Fully loosen the shoulder straps and waist belt and put on the
equipment.
2. Check that the shoulder pads are not twisted and take the weight on
the shoulders by pulling the shoulder straps. Do not fully tighten.
3. Close the waist belt buckle and pull the ends of the waist belt until it fits
securely and comfortably.
4. Pull the shoulder straps until the equipment rests securely and
comfortably on the hips. Do not over tighten.
5. Align and push the lung demand valve into the mask until it latches in
position. Check the attachment by gently attempting to pull the
coupling apart.
6. Put the neck strap of the face mask over the head, and then insert the
neck strap stud into the hole in the center strap of the head harness.
4.1.5 Putting on the face mask
WARNING
Correct fit of the mask can only be achieved if the complete mask seal
makes contact with the skin.
►Head hair, facial hair, earrings, facial piercings, and normal spectacles
are not permitted in the sealing area. Hair styles that could affect the
mask fit (buns, pony-tails, hairpieces, etc.) are not permitted.
See also the face mask instructions for use.
1. Press the reset button (Fig B, Item 1).
2. Open the cylinder valve slowly, but fully, to pressurize the system.
3. Detach the neck strap stud from the center strap of the head harness.
4. Fully extend the straps and spread the head harness (Fig F).
5. Place the chin into the chin cup of the mask and pull the harness over
the head. Locate the harness center plate on back of the head.
6. See Fig G: tighten the lower (1) and then upper straps (2) evenly
towards the back of the head. Tighten the center strap (3) if necessary.
7. Breathe normally and carry out the mask function check.
Trademark Trademark owner
Dow Corning®and
Molykote®
Dow Corning Corporation in the United States and/or
other countries
PAS®Dräger
Abbreviation Explanation
CBRN Chemical, biological, radiological and nuclear
CGA Compressed Gas Association
EOSTI End of service time indicator
IDLH Immediately dangerous to life or health
LDV Lung demand valve
NIOSH National Institute for Occupational Safety and Health
NFPA National Fire Protection Association
OSHA Occupational Safety and Health Administration
B
3953
41
2
3
ON
OFF
C
5121
1
D
1624
A
1599/1602
4
3
1
2
1 2 3
E
3736
G
3626
1
2
3
F
3625

PAS®Micro Series
Self-contained respiratory protection equipment Instructions for Use
i
3352430 (A3-D-P) Page 2 of 2
4.1.6 Mask function check
1. Close the cylinder valve and breathe normally to empty the system.
○When empty, the mask should hold on to the face to indicate a
positive seal.
2. Immediately reopen the cylinder valve and breathe normally.
3. Inhale and hold your breath.
○There should be no audible leak.
4. Recommence breathing.
○Exhaled air should flow easily out of the exhalation valve.
5. Press and release the bypass button (Fig B, Item 3).
○A short jet of additional air should be supplied into the mask.
6. Breathe normally and proceed to the work area.
4.2 During use
WARNING
The wearer should be in a safe area before the whistle sounds.
►Evacuate to a safe area immediately if the whistle sounds during an
operation.
Using the bypass button (Fig B, Item 3) uses air from the cylinder and
could rapidly reduce the service time of the equipment.
►Do not use the bypass button unless absolutely necessary.
CAUTION
During entry to the working area not more than 20 % of the rated cylinder
working pressure can be used.
►Regularly check the pressure gauge during entry and throughout the
operation.
●The prescribed service time of 15 minutes applies to a PAS®Micro
with a fully charged cylinder. The actual service time depends on the
cylinder pressure at the start of the operation and the respiratory rate
of the wearer.
●When in a safe area, remove the lung demand valve from the face
mask if necessary and continue to breathe normally.
4.2.1 Emergency air flow procedures
WARNING
The following emergency air flow procedures could greatly reduce the
operating service time of the air supply.
►When activated the user must immediately evacuate to a safe area.
►The reason for using the procedure must be investigated and repaired
before reusing the equipment.
●Additional air flow required (emergency procedure only used in the
unlikely condition of low or blocked airflow):
○Press and rotate the bypass button (Fig B, Item 3) to deliver a
sustained air supply (85 to 130 liters/minute) into the mask.
●Excessive or loss of air flow (emergency procedure only used in the
unlikely condition of high or loss of airflow):
○Close the cylinder valve then immediately begin to slowly reopen
the valve. Use the cylinder valve as a regulating valve to set the air
flow to meet the user requirement.
4.3 After use
WARNING
Removing the equipment in a hazardous breathing environment is unsafe.
►Do not remove the equipment until in a safe breathing environment.
NOTICE
The equipment can be damaged if removed incorrectly.
►Do not remove the face mask by pulling on the lung demand valve.
1. Loosen the head harness straps and remove the mask. At the point
when the seal between the face mask and the face is broken, press the
reset button (Fig B, Item 1).
2. Fully close the cylinder valve.
3. Press the bypass button (Fig B, Item 3) to fully vent the system.
4. Remove the lung demand valve from the face mask.
5. Open the waist belt buckle, lift the shoulder strap buckles to loosen the
harness, and then remove the equipment.
6. Carry out the after use maintenance tasks in the maintenance table
(Section 6.1).
5 Troubleshooting
The troubleshooting table shows fault diagnosis and repair information
applicable to respiratory protection equipment users. Further
troubleshooting information is available in instructions for use supplied with
associated equipment (e.g. face mask and lung demand valve).
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.
Symptom Fault Remedy
Air leak or failed leak
test (use a soapy
solution to locate the
leak If necessary)
Loose or dirty
cylinder connector
Disconnect, clean, and
reconnect the connector
and retest
Hose or component
fault
Substitute user
replaceable accessories
and retest
Air leak from the
medium-pressurehose
connector at the first-
stage regulator
First-stage regulator
or relief valve fault
Service task
High or low medium
pressure
First-stage regulator
fault
Service task
Poor sounding whistle Whistle dirt Clean whistle flute and
retest
Whistle not functioning
correctly
Activation
mechanism fault
Service task
Drop in first-stage
regulator performance
during a flow check
Sintered filer blocked Service task
Mask function check
failure
Face seal fault Readjust the mask and
head harness and retest
Mask fault Service task
6 Maintenance
6.1 Maintenance table
Service and test the equipment, including out-of-use equipment, 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.
Additional inspection and testing may be required in the country of use to
ensure compliance with national regulations.
6.2 Maintenance tasks
6.2.1 Removing the cylinder
WARNING
High-pressure air release may cause injury to the user or other personnel
near the equipment.
►Close the cylinder valve and fully vent the system before attempting to
disconnect the air cylinder.
1. Close the cylinder valve and press the bypass button (Fig B, Item 3) to
fully vent the system.
2. Loosen the cylinder strap.
3. Disconnect the cylinder valve from the first-stage regulator.
4. Remove the cylinder, ensuring that it remains clear of the hand wheel
of the first-stage regulator to prevent damage.
6.2.2 Air cylinder charging
WARNING
Air quality for compressed air cylinders must conform to the minimum
grade requirements for Type 1 gaseous air as defined in the CGA
Commodity Specification for Air, G-7.1 Grade D or higher quality.
If the moisture content of the air exceeds recommended levels, ice
particles can form and reduce or block air flow.
►Check the moisture content and ensure that it does not exceed 35 mg/m3
(3.49 x 10-5 oz/ft3).
●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.
○Have 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.
Difficulty connecting or
disconnecting the
medium-pressure
coupling
Dirty connector Disconnect, clean, and
reconnect couplings and
retest
Burring of the male
coupling
Replace the hose with the
male coupling
Component/
System
Task Before
use
After
use
Every
month
Every
year
Every
10
years
Complete
equipment
Visual inspection (see
Note 1 and Section 4.1.1)
Notes
O 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.
OO
Functional test (see
Section 4.1.3)
OOO
Breathing cycle and static
tests (see Note 2)
2 These maintenance tasks can 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.
O
Lung demand
valve
Check the O-ring for
lubricant (see Note 3)
3 Check the O-ring on the lung demand valve outlet (Fig B, Item 4). 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).
O
Check the male element
of the medium-pressure
coupling for burring (see
Step 1 in Section 4.1.3)
OO
First-stage
regulator
Medium-pressure check
(see Note 2)
O
Inspect the high-pressure
connector O-ring (see
Note 2 and Note 4)
4 Replace the high-pressure connector O-ring if it is found to leak during
functional testing or if it is visibly damaged.
OO
Overhaul. Contact
Dräger for the Repair
Exchange (REX) service
(see Note 5)
5 Where the equipment is subjected to a high level of use (in training
establishments etc.), reduce the overhaul period for the first-stage
regulator. In these circumstances, Dräger recommend that the
overhaul frequency should be less than 5000 applications of use. An
application of use is defined as a single use of the fully assembled
equipment, where the user breathes from the air cylinder. It does not
include system pressurization for pre-operational checks.
O
Cylinder Charge to the full rated
pressure (see
Section 6.2.2)
OO
Check the charged
pressure (stored
cylinders only)
O
Check the test date of the
cylinder
O
Recertification According to national regulations in the
country of use
Cylinder valve Overhaul At the time of cylinder recertification
Symptom Fault Remedy ●Recharge to the rated working pressure of the cylinder. Dräger
recommend a charge rate of 300 psi/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.
6.3 Cleaning and disinfecting
CAUTION
If water is trapped and then freezes inside the pneumatic system (such as
the lung demand valve), operation could be impaired.
►Prevent any liquid from entering the pneumatic system, and thoroughly
dry the equipment after cleaning and disinfecting.
►Do not immerse pneumatic components in cleaning solutions or water.
Excessive time in a heated dryer could damage the equipment.
►Do not exceed 140 °F (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.
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 equipment 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
components is required.
7 Storage
●Extend the shoulder straps, waist belt and the mask head harness.
●Fix the equipment securely to any raised mounting point to prevent it
from falling.
●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.
●Store the equipment between 5 °F and 77°F (-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.
8 Disposal
Dispose of the product in accordance with applicable rules and regulations
in the country of use.
9 Technical data
10 Special instructions
10.1 Cautions and limitations
I – Contains electrical parts that may cause an ignition in flammable or
explosive atmospheres.
J – Failure to properly use and maintain this product could result in injury
or death.
M – All approved respirators shall be selected, fitted, used, and maintained
in accordance with MSHA, OSHA, and other applicable regulations.
N – Never substitute, modify, add, or omit parts. Use only exact replacement
parts in the configuration as specified by the manufacturer.
O – Refer to User's Instructions and/or maintenance manuals for
information on use and maintenance of these respirators.
S – Special or critical user's instructions and/or specific use limitations
apply. Refer to User's Instructions before donning.
10.2 S – Special or critical user’s instructions
●The EOSTI whistle set point is 25 ± 2 % of the rated cylinder pressure.
For the activation range see the technical data (Section 9).
●Before occupational use of this respirator, a written respiratory
protection program must be implemented to meet all of the local
government requirements. In the United States employers must
comply with OSHA 29 CFR 1910.134 which includes medical
evaluation, training, and fit testing.
●Minimum ambient temperature of operation: -25 °F (-31.7 °C).
11 Warranty information
Unless otherwise agreed between Dräger and the customer, the following
shall apply in the event of defects of the product in material or
workmanship: The customer shall contact the company from which the
product was bought (“seller”). The warranty conditions agreed between the
customer and the seller shall apply. The product must be used in strict
accordance with the instructions for use. Any use disregarding the
instructions for use may void warranty.
12 Contact details
Any issues with the equipment, including damage, malfunction, or failure
that may present a hazard to the user should be reported to Dräger US
Customer Service – Phone [phone].
The certification organization can be contacted at: NIOSH, NPPTL –
Phone [phone].
Item Specification
High-pressure connector 4500 psi connector to CGA 347
LDV to mask connector Dräger push-in connector
EOSTI whistle commences in the range 1215 to 1035 psi
EOSTI whistle ceases in the range 25 to 0 psi
EOSTI whistle volume >90 dBA