Dräger PAS Micro Series User manual

PAS®Micro Series
Short duration respiratory protection equipment Instructions for Use
i
PAS®is a registered trademark of Dräger 3352435 (A3-D-P) Page 1 of 3
3352435
© Dräger Safety UK Limited
Edition 05 – November 2018
Subject to alteration
Draeger Safety UK Limited
Ullswater Close Tel [phone]
Blyth, NE24 4RG Fax [phone]
United Kingdom www.draeger.com
1 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 For Your Safety
This variant of the Dräger PAS®Micro Series of equipment incorporates a
preset and sealed pressure reducer. The associated lung demand Valve
(LDV) has a preset and sealed balanced piston unit assembly. The Dräger
guarantee is void should original sealing caps of these units be tampered
with, removed, or broken. Correct operational condition is only valid if
Dräger service and re-seals the pressure reducer and balanced piston unit.
●Use of this equipment requires wearer training and observance of
these Instructions for Use.
●Use the equipment for the purpose specified in this instruction, or as
confirmed in writing by Dräger.
●Use and maintenance of this equipment requires knowledge and
compliance with National Regulations, Laws and Standards governing
the use of respiratory equipment in the country of use.
●Only trained competent personnel should inspect and service the
equipment at regular intervals and a record kept of such inspections
and service.
●Only trained and competent personnel should carry out the charging of
the compressed air cylinders.
●Dräger recommends a Service Contract be obtained from your Dräger
Branch or Agent.
●Contact Dräger for details of Service Contracts and Service Training
Courses.
●Use only original Dräger Spare Parts for service and maintenance.
●Use only original Dräger Test Equipment for service and maintenance.
●Notify Dräger if there is a component fault or failure.
3 Liability Statement
Terms and Conditions of warranty for the Dräger PAS®Micro Series of
equipment can be obtained from Dräger on request. Responsibility for
reliable function of the equipment transfers to the owner or operator when
serviced or repaired by untrained personnel, (not employed or authorised
by Dräger), or when used in a manner not conforming to its intended use.
4 Description and Intended Use
The Dräger PAS®Micro Series of Short Duration/Airline equipment
consists of:
●Back Carrying Harness with Cylinder Strap, Shoulder Straps and
Waist belt.
●Pressure Reducer with HP Gauge, Whistle Warning Unit (WWU) and
integral Lung Demand Valve (LDV).
Alternatively:
●Pressure Reducer with HP Gauge, Whistle Warning Unit (WWU) and
medium pressure hose with Quick Release Coupling (QRC).
●Airline Manifold Connection.
●Valved Cylinder Assembly.
The equipment is available in either 10 minute or 15 minute nominal
duration versions.
This series of equipment is compatible with a range of lung demand valves,
face mask and compressed air cylinders. When used in approved carrying
system, valved cylinder assembly, LDV and face mask combinations, the
equipment provides the wearer with respiratory protection when working in
a contaminated or oxygen deficient gaseous atmosphere.
The effective duration of the equipment is dependant on the capacity
(volume) of the cylinder selected and the breathing rate of the wearer.
Details of the equipment variants, accessories, and any approved
independent air supply source configurations are available from Dräger on
request.
5 Technical Data
5.1 High Pressure Connections
Standard G5/8 as per EN 144-2.
200bar or 300bar
Other connections are available to national standards.
5.2 Whistle Setting
Preset by Dräger to 55bar +/-5bar
(60bar to 50bar)
5.3 LDV to Face mask Connection
Three variants of integral LDV are available:
●Push-In Type A - Positive Pressure (PP).
●Screw-In Type AE - Positive Pressure (PP).
●Screw-In Type N – Normal Demand (ND).
Refer to the Instructions for Use supplied with the face mask.
5.4 Compressed Air Cylinders
Cylinders are available in either steel, or composite materials. Contact
Dräger for details.
Cylinders supplied by Dräger are charged at an ambient temperature of
15o C and to the nominal cylinder pressure.
5.5 Airline Manifold Connection
A Male Coupling is incorporated on the airline manifold for the connection
of a hose coupling from an independent air supply.
5.6 Airline Operating Pressures and Flow
The selected low pressure independent air supply must meet the following
parameters.
●One User – 6bar to 10bar - airflow rate of at least 550 Litres/minute.
●Two Users – 7bar to 10bar - airflow rate of at least 550 Litres/minute.
Safety Warning: Air quality for compressed air breathing systems
must conform to the requirements of EN12021. Do Not use oxygen or
oxygen enriched air.
6 Preparation for Use
A trained and competent person must perform the following checks and
preparation procedures before release of the equipment to a potential
wearer for operational use.
6.1 Visual Inspection
Check the integrity of,
●Back Carrying Harness with Cylinder Strap, Shoulder Straps and
Waist belt.
●Pressure Reducer with HP Gauge, Whistle Warning Unit (WWU) and
integral Lung Demand Valve (LDV).
Alternatively:
●Pressure Reducer with HP Gauge, Whistle Warning Unit (WWU) and
medium pressure hose with Quick Release Coupling (QRC).
●Airline Manifold Connection and Hose.
●LDV – refer to the relevant Instructions for Use.
●Face mask – refer to the relevant Instructions for Use.
●Valved Cylinder Assembly.
6.2 Fitting Cylinder
●Place the Carrying Harness on a clean flat surface. Extend the cylinder
strap, shoulder straps and waist belt.
●Refer to Fig. 1. Slide the fully pressurised cylinder through the strap
locating the valve port to the reducer hand wheel.
Caution: To prevent damage, ensure that the hand wheel of the
pressure reducer remains clear of the cylinder.
●Align the cylinder centrally with the Carrying Harness and then screw
the hand wheel of the pressure reducer (clockwise) to the port of the
valve. Do Not tighten.
●Take up the slack on the cylinder strap to tighten around the cylinder
and then pull the strap through the buckle to secure. Insert loose end
of strap into the guide loop. Finally tighten the hand wheel – hand tight.
Do Not use tools.
6.3 Connecting LDV to QRC
This instruction refers to equipment with medium pressure hose with Quick
Release Coupling (QRC).
●Insert the male coupling of the LDV into the female coupling (QRC) of
the equipment medium pressure hose. Check the security of the
connection. Refer also to the Instructions for Use provided with the
LDV.
Important Note: The following test will verify the integrity of the
complete assembly. The pressure leak test described should also be
carried out following the reassembly of any of the component parts
of the pneumatic assembly (spares etc.).
6.4 HP Leak and WWU Test
●Type PP LDV’s - Press the reset button of the LDV to switch ‘Off’
positive pressure.
●Open the cylinder valve slowly, but fully, to pressurise the system then
‘Close’ the valve and observe the gauge.
Test Parameter – Indicated pressure on gauge should not decrease more
than 10bar in 1 minute.
●Proceed to test the whistle warning unit.
●Type PP LDV’s – Cover and seal the outlet of the LDV with the ball of
the hand. Press carefully the centre of the rubber cover then lift the
hand to slowly vent pressure.
Type N – Carefully press the centre of the rubber cover to and slowly
vent pressure.
●Observe the gauge during venting. The whistle should sound at the
preset pressure of 55bar +/- 5bar.
●Type PP LDV’s - Press the reset button of the LDV to switch ‘Off’
positive pressure.
●Should the whistle not sound at the preset pressure, refer to Dräger
Service.
6.5 Leak Test and LP Flow Test - Airline Connection
Refer to Technical Data.
Important Note: If using a works airline to perform the following tests,
then connect the isolation valve (3353449) to the female coupling of
the airline outlet.
●Connect the male coupling (1) Fig. 4 to the female QRC of the
independent air supply.
●Type PP LDV’s - Press the reset button of the LDV to switch ‘Off’
positive pressure.
●‘Open’ the valve of the independent air supply to pressurise the
system.
Test Parameter - Check for no audible leak.
●‘Open’ the cylinder valve of the breathing equipment to pressurise the
system, then disconnect the male coupling (1) Fig. 3 from the female
QRC of the hose from the independent air supply.
Test Parameter - Non-return valve check - Check for no audible leak from
the female QRC.
●‘Close’ the cylinder valve of the breathing equipment, then re-connect
the male coupling (1) Fig. 3 to the female QRC of the independent air
supply.
●Firmly press the centre of the rubber cover of the LDV to activate the
airflow from the LDV. See Safety Warning.
Safety Warning: Do Not direct the airflow onto the face, eyes or skin.
Test Parameters – An unobstructed airflow should vent from the outlet of
the LDV. This test should take a minimum of 3 to 5 seconds.
●‘Close’ the valve of the independent air supply and observe the LP
gauge, or the HP gauge, if fitted.
6.6 Test Parameters
LP Gauge - Indicated pressure should not decrease more than 1bar in
1 minute.
HP Gauge - Indicated pressure should not decrease more than 10bar in
1 minute.
●Disconnect the male coupling (1) Fig. 3 from the female QRC of the
independent air supply. Press carefully the centre of the rubber cover
of the LDV to vent pressure.
●Type PP LDV’s - Press the reset button of the LDV to switch ‘Off’
positive pressure.
6.7 Fitting LDV to Face mask
●Inspect the face mask as defined in the relevant Instructions for Use.
●Fully extend (open) the straps of the head harness.
Type A
●Check that the face mask port and the connector O ring of the LDV are
clean and undamaged.
●Push the connector of the LDV into the port of the face mask until it
‘clicks’ in position.
●Check that the attachment is secure by pulling the LDV away from the
face mask – there should be no axial movement.
Types AE and N
●Check that the face mask port and sealing ring are clean and
undamaged.
●Screw the hand wheel of the LDV into the port of the face mask, align
the LDV as shown in Fig. 2 then finally tighten.
●Having ‘passed’ the test, and the LDV fitted to the face mask, the
equipment is now available for use.
7 Use
7.1 Putting on equipment
●Extend the shoulder straps. Open the buckle of the waist belt and
extend the straps.
●While supporting the face mask, put on the equipment taking the
weight on the shoulders by pulling evenly on the shoulder adjusting
straps. Put the neck strap of the face mask over the neck then insert
the neck strap stud into the hole in the centre strap of the head
harness. Face mask is now in the ready position.
●Loop the waist belt around the waist and fasten the buckle. Pull the
ends of the waist belt strap until secure and comfortable. Do Not
overtighten. Make any final adjustment necessary to the shoulder
adjusting straps.
Figure 3 shows the correct wearing position.
7.2 Pre Operational Checks
●Type PP LDV’s - Press the reset button of the LDV to switch ‘Off’
positive pressure.
●‘Open’ the cylinder valve.
Note: Refer to Instructions for Use provided with the Face mask.
Safety Warning: Facial hair, beard stubble, side-whiskers, and the
wearing of spectacles will adversely affect and interfere with face
mask seal. Correct fit of face mask only ensured if face mask seal
makes close contact with skin.
●Detach the neck strap stud from the centre strap of the head harness.
●Spread the head harness (Fig. 4), place chin into the face mask then
position the harness over the head, locating the centre plate with the
back of the head.
●Tighten both lower (1), then upper straps (2) evenly towards back of
head. Fig. 5. Tighten the centre strap (3) only if necessary.
1605
1
1583
2
3
1604/1606
1
0016
4
1597
5
2
1
3
1598
61
2

PAS®Micro Series
Short duration respiratory protection equipment Instructions for Use
i
3352435 (A3-D-P) Page 2 of 3
●On achieving a face seal and on taking first breath inhalation the Type
PP LDV’s will automatically switch to positive pressure starting the air
supply to the face mask.
●Breathe normally, and before use perform Function Check.
7.3 Function Check
●‘Close’ the cylinder valve. Breathe normally to vent the system of air.
When vented, the face mask should hold onto the face indicating a
positive seal. Immediately turn ‘Open’ the cylinder valve and breathe
normally.
Note: If a leak is detected, readjust the head harness and retest.
●Inhale and hold breath. Unit must balance, i.e. no audible leak.
●Continue breathing normally. The expired air should flow easily out of
the exhalation valve of the face mask.
●Press the centre of the rubber cover of the LDV to activate and check
supplementary airflow from the LDV then release the button.
●Continue breathing and proceed to the working area, alternatively refer
to Airline Use.
Safety Warning: The duration starts from the time of opening the
cylinder valve and fitting the face mask. The effective duration is
dependant on the capacity (volume) of the cylinder selected and the
breathing rate of the wearer.
●When not connected to the independent air supply, take gauge reading
regularly. The WWU will sound at the preset pressure. Go on to a safe
area at least when the whistle sounds, by the shortest and safest route.
7.4 Airline Use
Safety Warning: Before using the airline manifold connection to the
equipment, ‘check’ that the independent air supply to be used
complies with air quality, pressure and flow requirements (see
Technical Data) and that a ‘Permit for Use’ has been issued. The
respirable breathable air supply source connection to the wearer
must be located in, or positioned in a safe and uncontaminated area.
Dräger recommend that a ‘Controller’ must be present at all times at
the air source connection to monitor and maintain the air supply to
the wearer of the Dräger PAS®Micro Series Airline equipment.
The Controller
●‘Close’ any relief valves that may be fitted to the independent air supply
and then slowly, but fully, ‘Open’ the valve of the independent air
supply to pressurise the system.
The Wearer
●Put On the equipment and perform pre-operational and functional
checks as already described.
●Before entering, or when in the working area, connect the male
coupling (1) Fig. 3 to the female QRC of the ‘Open’ independent air
supply. Breathe normally then immediately ‘Close’ the cylinder valve of
the equipment. The air supply to the wearer is now from the
independent air supply.
The Wearer – Evacuation
●Breathe normally.
●When the task is completed, or when advised by the ‘Controller’ -
proceed to the safe area (Controller). During evacuation take care to
hold and carefully withdraw the airline supply hose. See After Use.
Important Note: If it is decided to evacuate the working area without
the airline connected, then proceed as follows:
●‘Open’ the cylinder valve of the equipment (anticlockwise) slowly, but
fully. Breathe normally and then disconnect the male coupling (1) Fig.
3 from the female QRC of the hose from the independent air supply.
Breathe normally and immediately leave the hazardous area by the
shortest and safest route.
Safety Warning: The remaining duration starts from the time of
opening the cylinder valve and disconnecting the independent air
supply. The time required to allow the wearer to evacuate to a safe area
must be within the remaining capacity (volume) of air in cylinder
selected taking into account the breathing rate of the wearer. When in
an evacuation scenario Dräger strongly advise that the supplementary
supply facility is not used.
●Take gauge reading regularly. The WWU will sound at the preset
pressure.
After Use
Safety Warning: Do Not remove equipment until in safe area, clear of
hazard.
SDBA Mode
●Release the side straps of the head harness.
●Remove the face mask then ‘Close’ the cylinder valve.
Airline Mode - The Wearer
●Release the side straps of the head harness.
●Type P and PE - Press the reset button of the LDV to switch ‘Off’
positive pressure then remove the face mask.
Airline Mode - The Controller
●Following removal of the face mask by the wearer, ‘Close’ the valve of
the independent air supply.
Airline Mode - The Wearer
●Firmly press the centre of the rubber cover of the LDV to activate the
airflow from the LDV to vent pressure from the system.
Safety Warning: Do Not direct the airflow onto the face, eyes or skin.
●Following venting, disconnect the male coupling (1) Fig. 3 from the
female QRC of the hose from the independent air supply.
Airline Mode - The Controller
●Refer to the After Use section of the Instructions for Use relevant to the
independent air supply.
SDBA and Airline Mode
●Following venting of the equipment, unbuckle the waist belt, lift the
buckles of the shoulder straps to loosen the harness then remove the
equipment.
Note: Do Not drop or throw down equipment as damage could occur.
●Type PP LDV’s - Press the reset button of the LDV to switch ‘Off’
positive pressure.
●Pass equipment to Service Department.
8 Routine Maintenance
To be performed after use of equipment.
See also Maintenance and Test Intervals Chart.
8.1 Removal of Cylinder
Safety Warning: Cylinder valve should be closed and system vented.
●Unscrew the hand wheel of the reducer from the cylinder valve and
carefully remove the valved cylinder assembly from the carrying
pouch. To prevent damage, ensure that the hand wheel of the
pressure reducer remains clear of the cylinder.
●Recharge the cylinder.
8.2 Charging Cylinders
Refer to ‘For Your Safety’
Safety Warning: Air quality for compressed air breathing systems
must conform to the requirements of EN12021.
Only charge compressed air cylinders which:
●Conform to National Standards.
●Feature the original manufacturers test date and test mark.
●Have not exceeded the test date indicated on the cylinder by the last
testing station.
●Do Not used damaged cylinders.
Recharge to the rated pressure indicated on the label or stamped on the
neck or shoulder of cylinder. Dräger recommend a charge rate of 27bar/
minute. Rapid charging will induce an increase in temperature resulting in
an incomplete charge - check pressure at ambient and if required ‘Top Up’
charge.
To prevent overcharging of the selected cylinder Dräger recommend that
a pressure-limiting device is fitted to the charging compressor.
8.3 Visual Inspection
Check the integrity of,
●Back Carrying Harness with Cylinder Strap, Shoulder Straps and
Waist belt.
●Pressure Reducer with HP Gauge, Whistle Warning Unit (WWU) and
integral Lung Demand Valve (LDV).
Alternatively,
●Pressure Reducer with HP Gauge, Whistle Warning Unit (WWU) and
medium pressure hose with Quick Release Coupling (QRC).
●LDV – refer to the relevant Instructions for Use.
●Airline Manifold Connection and Hose.
●Face mask – refer to the relevant Instructions for Use.
●Valved Cylinder Assembly.
9 Cleaning, Disinfecting, Drying
Safety note: 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.
Safety note: Do not immerse pneumatic or electronic components in
cleaning solutions or water.
Safety note: 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
●Clean the breathing apparatus manually using a cloth moistened with
cleaning solution to remove excess dirt.
●Apply disinfecting solution to all internal and external surfaces.
●Rinse all components thoroughly with clean water to remove all
cleaning and disinfecting agents.
●Dry all components using a dry cloth, in a heated dryer or in air.
●Contact service personnel or Dräger if disassembly of pneumatic or
electronic components is required.
9.1 Lung Demand Valve (LDV)
External cleaning of the LDV may be carried out as required using a cloth
dampened in the above cleaning solution.
Important Note: When cleaning using a dampened cloth, take care to
prevent any fluid residue entering the demand valve.
When however the user considers it necessary to internally disinfect the
LDV then these instructions should be followed:
Note: 1 Detach demand Valves (fitted with male coupling) from the
female coupling of the medium pressure hose of equipment.
●Refer also to the Instructions for Use provided with the LDV
Note: 2 If necessary, this variant of the Dräger PAS®Micro Series of
equipment requires the demand valves (integral LDV) to be removed
from the manifold of the airline manifold connection to the reducer.
For details of removal refer to the following section.
9.2 Integral LDV
Refer to Figure 6.
●Roll back the rubber sleeve (1) to access the retention staple (2). Insert
a flat blade screwdriver under the retention staple and while pressing
the end of the hose into the hose connection of the reducer – remove
the retention staple. Remove hose from the airline manifold.
●Remove component parts of the relief valve, i.e. the spring, O ring
retainer and O ring from the nozzle of the medium pressure hose. If
required, remove the LDV from the front port of the face mask.
Important Note: Cleaning, disinfecting and drying of the LDV must be
carried out in line with the Instructions for Use. Refer to the LDV
Instructions for Use supplied with the equipment.
●Reverse the above instructions to reassemble the LDV to the
equipment and perform Pre Operational Checks as detailed in
Instructions for Use for equipment.
9.3 Replacing Diaphragm of the LDV
Refer also to the Instructions for Use provided with the LDV, or the
equipment.
Face mask
Refer to Instructions for Use provided with Face mask.
10 Storage - Ready for Use
10.1 Storage preparation
●Extend the shoulder straps, waist belt and the straps of the face mask.
●For 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.
10.2 Storage conditions
●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.
●Fix the breathing apparatus securely to any raised mounting point to
prevent it from falling.
11 Fault, Cause, Remedy
Refer to any associated Instructions for Use supplied with this product, e.g.
face mask.
12 Miscellaneous
Fault Possible Cause Remedy
High pressure leak Check security of all
connections/seals
Tighten or replace seals
as necessary
Leak from pressure
relief valve of MP
hose
1 Damaged O-ring
2 Weak Spring
3 Damaged O-ring
retainer
Replace O-ring
Replace spring
Replace retainer
Leak from pressure
relief valve of MP
hose
Relief valve
component
satisfactory
Reducer failure Contact Dräger Service
High or Low
medium pressure
Reducer out of
specification
Contact Dräger Service
Poor sounding
whistle (if fitted)
Dirt Clean and retest
Whistle not
functioning correctly
Defective activation
mechanism
Contact Dräger Service
Description Order Code
Dow Corning®Molykote®111 3331247

PAS®Micro Series
Short duration respiratory protection equipment Instructions for Use
i
Dow Corning®and Molykote®are registered trademarks of Dow Corning Corporation 3352435 (A3-D-P) Page 3 of 3
13 Maintenance and Test Intervals
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.
Additional inspection and testing may be required in the country of use to ensure compliance with national regulations.
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.
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).
4. Replace the sintered filter if a drop in reducer performance is observed during a flow check or if it is visibly damaged.
5. Replace the high-pressure connector O-ring if it is found to leak during functional testing or if the O-ring is visibly damaged.
6. Where the breathing apparatus is subjected to a high level of use (in training establishments etc.), reduce the overhaul period for the pressure
reducer. In these circumstances, Dräger recommend that the overhaul frequency should be less than 5,000 applications of use. An application of use
is defined as a single use of the fully assembled breathing apparatus, where the user breathes from the air cylinder. It does not include system
pressurization for pre-operational checks.
Description Before
Use
After
Use
Every
Month
Every
Year
Every 6
Years
Complete Equipment Visual inspection (see Note 1) 
Functional testing 
Breathing cycle and static tests (see Note 2) 
Demand Valve Check push-in type connectors for lubricant (see Note 3) 
Pressure Reducer Medium-pressure check (see Note 2) 
Inspect the sintered filter (see Note 2 and Note 4) 
Inspect the high-pressure connector O-ring
(see Note 2 and Note 5) 
Overhaul. Contact Dräger for the Repair Exchange (REX) service
(see Note 6) 
Cylinder Charge cylinder to correct working pressure 
Check charged pressure (stored cylinders only) 
Check test date of cylinder 
Recertification According to national regulations in the
country of use
Cylinder Valve Overhaul At the time of cylinder recertification