PA90 SERIESCompressed Air Respiratory Protection Equipment

Instructions for Use

The self-contained open circuit respiratoryprotec t ion equ ipment re fer red to in th is manualconforms to EN137 and has been issuedwith Certificate of Assurance Number:SHIBAt69

CONTENTS PageFor Your Safety 3important Information 4Purpose/Description PA92 5Purpose/Description PA93 6Purpose/Description PA94 7Technical Data 6Preparations for Use 9-10Operation 1 1 - 1 2Use 1 2After Use 1 3Routine Maintenance 1 3 - 1 6

Clean ingConversion to Twin CylinderFault-Cause-RemedyTesting the ApparatusMaintenance andTest IntervalsStorageOrder ListSpare Parts List

Page1 4 - 1 5

1 61 71 7

1 61 9

20-222 3

Drager L imi ted , wh i le endeavour ing to ensure Note; This manual describes the operatingthe correctness of statements of fact and procedure for PA90 Series, Twoadvice contained in this publication, gives Stage (LP) Compressed Ai r Respi ratoryno guarantee or warranty in respect thereof, Protection Equipment, with 200and accepts no liability for any misstatement or 300 bar supply pressure.or inaccuracy in pub l i ca t ion , o r fo r any omiss iontherefrom.

FOR YOUR SAFETY

For correct and effective use of this apparatusand to avoid hazards, it is essential to readthe following recommendations and to actaccordingly I ):RecommendationsStrictly follow these Instructions for UseAny use of this apparatus requires a fullunderstanding and strict observation of theseinstructions. This apparatus is only to beused for purposes specified here.Intended UsePA90 Series compressed air respiratory

protection equipment can only be used inconjunction with those cylinder combinationsin the UnitedKingdomcovered bythe Certificateof Approval, or by national standards in forcein the country of use. For information onthese combinations, please contact DragerCustomer Services.The cylinder, demandvalve and facepiece should be correctlyassembled totheset togivemaximumrespfratoryprotection against harmful gases, vapoursand particulate matter.It is recommended that the cylinder, demandvalve and facepiece are fitted to equipmentin a clean area, i.e. a BA workshop. If it isnecessary to change these components atan incident, suitable precautions must betaken to avoid contamination.In the United Kingdom, guidance on thelevel of protection for Compressed AirRespiratory Protection Equipment productscan be found in the Health and SafetyExecutive publication HS(G)53 - RespiratoryProtective Equipment, a practical guide forusers. Alsothe Controlof Substances Hazardousto Health (COSHH) regulations andrecommendations apply to the aboveequipment.

Liability for proper function or damageLiability for proper function of this apparatusis irrevocably transferred to the owner oroperator, to the extent that the apparatushas been serviced or repaired by personnelnot employed or authorised by Drager Serviceor when this apparatus has been used in amanner not conforming to its intended use.Drager Limited cannot be held responsiblefor any damage caused by non-compliancewith the above recommendations. The warrantyand liability provisions of the terms andconditions of sale and delivery of Drager

Limited are likewise not modified byrecommendations given above.

MaintenanceThis apparatus must be inspected (1) andserviced (2) by experts at regular intervalsand a record maintained of such inspectionsand servicing. Repairs (3) and general overhaulof this apparatus should only be carried out-by fully trained and expert personnel.We recommend that a service contract is .obtained from DrBger Service Departmentand that all repairs are also carried out bythem. Only original Drager Spare Parts shouldbe used for maintenance (4). Observe chapters,‘Routine Maintenance and Test Intervals’.1 Inspection = examination of actual

condition.2 Service = measures to be taken to

maintain desired condition.3 Repair = measures to be taken to

restore desiredcondition.

4 Maintenance = inspection, service and ifapplicable, repair.

Product FaultsIn the event of any component fault ormalfunction, Drager should be notified.lntheUnitedKingdom,itmayalsobenecessa~to contact the Health and Safety Executive(HSE),withdueregardpaidtotherequirementsof the Reporting of Injuries, Diseases andDangerous Occurrences Regulations 1985(RIDDOR).

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Statutory RequirementsIn the United Kingdom. the requirements of

the Control of Substances Hazardous toHealth Rejjulations (COSHH) governing theuse of Respiratory Protective Equipment(RPE) should be observed. Outside theUnited Kingdom, the relevant regulationsgoverning the use of RPE should be observedand adhered to in the country of use.

Important InformationCompressed gas by its very nature, is ameans of st0rfng.a high quantity of energyin a small containad volume, and due to thehigh concentration, the container: whetherit be a compressed air cylinder or an airlineflexible hose, is a potential hazard. Risksfrom this potential hazard can be minimisedproviding care is exercised in the operationand handling of compressed gas equipmentand components.1 This apparatus is only intended for

the purposes specified in theselnstructkmsfor Useorforthepurposeconfirmed in writing by Draeger Limited.

2 For safety reasons, pressure reducersshould be overhauled at the statedinterval.Pressuremducersofcemfiedapparatusare sealed by Draeger.If original seal cap has been broken,orremoved,apparatusisnot~as being operational inaccordancewith approval standards.For authorised maintenance to becarried out, and therefore fulloperational state to be achieved,Draeger can only be liable if pressurereducer is serviced and re-sealed byDraeger.This is only the case when pressurereducers are fitted with originalDraeger components and sealingcaps.

3 Compressed air is not to be directedonto any surface of the human body.If compressed air is used for cleaningor removal of contaminants fromcomponents, then suitable personalprotection equipment should be worni.e. industrial gloves, safetyglasses/visor etc.

4 All adjustable connections must besecurelytfghtenedusingtheappropriate

I

tools, and inspected at regularintervals for wear.The cylinder valve must be fullyclosed, and all pressure in the systemvented; before removal of anycomponent from apparatus.Test gauges must be calibrated oncea year.Compressedgascontainers(cylinders)must be free from external damage,and must only be used if they arewithin the stipulated test period.Cylinders should only be pressurisedin accordance with the charginginstructtonsde.scribedunder’RoutineMaintenance’.Component parts which arerecommended for replacement at .regular intervals - must be replacedregardless of visual condition andonly original Draeger Spare Partsused.With reference to air quality forbreathing systems guidance shouldbe sought from EN132 : 1990.Impurities e.g. dust, dirt, metallicparticles or any other toxic or irritantsubstances should be kept to aminimum, but in any case shouldnot exceed the maximum permissibleexposure level.

Warning:Do not use oxygen enriched air.

Two stage apparatus will accept 200bar or300bar nominal cylinders without modificationto the cylinder connector or gauge.The effective duration of two stage apparatusis dependent on :

:Cylinder type and capacity chosenRate of work.

Driiger Limited

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Purpose/DescriptionPA90 Series - PA92PA92 is a self-contained unit for use in non- To complete PA92, various combinationsrespirable atmospheres. of Panorama Nova Facepieces, LungBasic configuration consists of: Governed Demand Valves ( Positive Pressure+ Composite Backplate or Normal Demand ), and Compressed Air+ Standard Harness Valved Cylinders are available.+ Pressure Reducerand Hose Assembly Refer to Technical Data - Page 8 and

( Various cylinder connections Order List - Page 20.available)

+ Cylinder Contents Pressure Gauge+ Whistle Warning Unit

PA 92 Equipment Layout

1 Backplate, Pneumaticsand Harness Assembly

2 Demand Valve (various)3 Facepiece (various)4 Valved Cylinder (various)

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Purpose/DescriptionPA90 Series - PA93

PA93 is a self-contained unit for use in non-respirable atmospheres.Basic configuration consists of:+ Composite Backplate* Pro fess iona l Harness(PlasticBuckles)+ PressureReducerandHoseAssembly

( Various cylinder connectionsava i lab le )

+ Whistle Warning UnitTo complete PA93 various combinations ofPanorama Nova Facepieces, Lung GovernedDemand Valves ( Positive Pressure or NormalDemand ), and Compressed Air ValvedCylinders are available.Refer to Technical Data - Page 8 and OrderList Paoe 20.”

+ Cylinder Contents Pressure Gauge

PA 93 Equipment Layout

1 Backplate, Pneumatics and HarnessAssembly - Basic Unit

2 Demand Valve (various)3 Facepiece (various)4 Valved Cylinder (various)

Purpose/DescriptionPA90 Series - PA94

PA94 is a self-contained unit for use in +non-respirable atmospheres.

Whistle Warning Unit

Basic configuration consists of :To complete PA94, various combinations of

l Composite BackplatePanorama Nova Facepieces, Lung Governed

+ Professional Harness (Metal ShoulderDemand Valves ( Positive Pressure and Normal

Buckles)Demand), and Compressed AirValved Cylindersare available.

l Pressure Reducerand Hose Assembly(G5/8 DIN cylinder connection)

Refer to Technical Data - Page 8 and Order

l Cylinder Contents Pressure GaugeList - Page20.

PA 94Equipment Layout

1 Backplate, Pneumatics andHarness Assembly -Basic Unit

2 Demand Valve (various)3 Facepiece (various)4 Valved Cylinder (various)

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Technical RataPA90 SeriesHigh Pressure Connection (Stnnrk~td)Other connections availahlf~-

G5/8 as per DIN 477: Part6French StandardItalian StandardJapanese Standard

Facepiere ,~nd Ibmnnd Valve Connections,PASO/iPASO/IT_PASON

Dimerisiori-.Leng!hWidthHeightWeight of Alqwr:ltkrs

Push-InM45 x 3 Thread40mm Thread

6 2 0 m r n320mrn150mm3.0kg less cylinder

Single cylirlders are available from 6L to 12L - in steel and/or compositematerials- pressure fill 200 or 300bar.Twin 4L capacity , 200 and 300bar cylinders, are also available, forfurther details contact Drager Customer Services.

Note: If is advised that 1X cylindershould not be used in areaswith resfricted entry andexit

Note: Connec t ing ‘Y ’p iece fo r Tw in Cylinders- See Order List Page 22.Effective duration (in minutes) iscalculatedformoderately heavy workrates (airconsumptionapproximately40 L /min) e.g. Whisfle Warning Unitnominally set at50bar. Askfordetails

Whistle AdjustmentWhistle AdjustmentSlacken lock-nut (1)To increase whistle setting turn adjustingnut (2) clockwise.To decrease whistle setting turn adjustingnu t anCclockwiseWhen desired setting has been reached,tighten lock-nut.Recheck as stated on pages 10 or 12.

Preparation for UseFitting compressed air cylinder.

Fully open cylinder support strap onbackplate.Checkcylindervalveinletandpressurereducer threads are not damagedand sealing O-ring is in positionand not damaged.Wi th appara tus in hor izon ta l pos i t ion ,slidecylinderthroughcylindersupportstrap from top of backplate, towardscylinder connector on pressurereducer, and locate valve port topressure reducer handwheel.(Fig.1).L i f t comp le te un i t i n to up r igh t pos i t i onand screw handwheel on pressurereducer into cylinder valve port -handtight only.Where fitted hook anti-vibration strapto handwheel (Fig. 2).Place complete unit back intohorizontal position.Adjust cylinder retaining strap bypulling it lightly to take up slack;( Fig.3);to activate camlock mechanism;pull end of strap back over cylinder.(Fig. 4).Firmly press loose end of straponto velcro.

Connecting demand valve to apparatus(PASOA, AE and N)* Connect demand valve to apparatus

by inserting and pressing male coupling(on demand valve hose) into femalecoup l ing on supp ly hose un t i l l ocked .

Note:Locking mechanism is automatic,but check that assembly is engagedand secure.

O p e r a t i o n C h e c k sHigh Pressure Leak Test+ For positive pressure type demand

valves ensure lever on demand valveis pressed towards front cover; thisswitches ‘OFF’ positive pressuremechanism (Fig. 5).

+ Open cylinder valve slowly, but fully,to pressurise system.

* Close cylinder valve.+ Observe pressure gauge, pressure

shall not drop more than 5 bar in 1minu te .

F i g . 1

F i g . 2

F ig .3

F ig .4

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Whistle Warning Unit TestPA90A and PA90AECover demand valve port with ball ofhand and press centre of rubbercover (Fig. 6). to actrvate positivepressure.Vent apparatus slowly by carefully liftingball of hand and maintain a slow steadydecrease in pressurePASONVent apparatus slowly by gently. pressingcentre of protective cap i e..supplementary supply activation

+ Observe pressure gauge.Whistlewarning unit should sound at pre-setpressure.

* Ifwhistledoesnotsoundat appropriatepressure. reset whistle as perinstruction on Page 6.

* Following above check, de-activatedernand valve positive pressure bypressing lever towards front cover(Fig.5)

Connect ion of demand valve tofacepiece -Push-In Type A* Ensure facepiece port and O-ring

on demand valve are free from dirtand damage.

+ Push demand valve into facepieceport until it clicks into position.

+ Check a t tachment i s secure by pu l l ingdemand valve away from facepiece-there should be no ax ia l movement .

Connect ion of demand valve tofacepiece - Screw-In Type AE and N+ Use thumbs to screw in handwheel

until thread bites, into facepieceport .

+ Align demand valve vertically withcentre line of facepiece (Fig. 7).and tighten.

Warning:For Lung Governed Demand Valveswith threaded swivel connection,it may be possible for clearancebetween Demand Valve handwheetand retainer to be reduced due tocontamination, which could result inhandwhee l b ind ing w i th re ta iner ; thusimpa i r ing sw ive l ac t ion o f handwhee l .This could give the user the falseimpression that Demand Valve iscorrectly and fully screwed into

Facepiece port; when in fact it isnot.To check correct function of units inserv ice, ensure handwheelon DemandValve spins freely.This should be done at all timesprior to assembling Demand Valveto facepiece.Units found to be binding should betaken out of service and advicesought from Draeger.

F i g . 6

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F i g . 7

OperationPutting on apparatus

Put on apparatus with shoulder strapsand waistbelt fully extended.Fasten waistbelt buckle (Fig. 8).. andsecure waistbelt to hips by pullingloose ends of waistbelt away frombuckle until apparatus sits securelyand comfortably in place (Fig. 9).Tuck loose ends of waistbelt throughwaistbelt loops.Pull down shoulder straps (Fig. 10)until apparatus feels comfortable.Feed loose ends of straps betweenwaistbelt pad and straps.Fit neckstrap of facepiece over neckand a t tach demand va lve to facep iece.Refer to instructions on Page 10.Make sure that positive pressure typedemand valve is switched to positivepressure ‘OFF’ mode. andOpen cylinder valve slowly but fullyto pressurise system.Check system pressure on gauge.Put facepiece on as follows:a Spread out straps, leaving

cent re s t rap in pos i t ion shownin (F ig .1 1) .Only ad just s t rap i f necessary .

b Place chin into facepiece.

zPlace straps over head.Tighten lower straps, thenupper straps, by pulling themtowards back of head.Do not over tighten.

Cor rec t f i t o f facep iece is on ly ensuredif facepiece seal makes closecontact with the skin.Care should be taken to ensure thatno facial hair, beard, stubble, sidewhiskers or similar interfere withfacepiece seal.Spectac le wearers w i l l have prob lemsachieving a complete seal.

On achieving face seal positivepressure type demand valveswill activate automatically on firstinha la t i on .Breathe normally.

Fig. 8

F i g . 9

F ig . 10

Fig . 11

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Function ChecksCheck functioning of demand andexhala t ion va lves by breath ing deeplyseveral times.Hold b rea th ; un i t shou ld be ba lancedi.e. no audible leak.Con t inue b rea th ing : i t mus t be poss ib lefor expired air to flow easily out ofexhalation valve.Check function of supplementarysupply by pressing centre ofprotective cap.

For those user’s who have followedthe procedures as written (refer toPages 9 and 10) r.e. have testedwhistle warning unit before fittingfacepiece to demand valve; whistlewarning test described here maybe omitted.Close cylinder valve.Vent system by breathing normallyand check that whistle warning unitsounds at correct pressure.Continue breathing until system hasfully vented facepiece should holdonto face- this indicates a positiveface seal.Open cylinder valve and breathe?normal ly.

UseTake pressure gauge readings from time totime whilst using apparatus.Whistlewarningunit soundsoncecompressedai r supp ly has reached W W U pressure se t t ing .

Start escaping before whistle sounds.ATTENTIONAs regards escape: time required forapproach is to be observed in addition toretreat time indicated by warning signal.

After Use+ Switch OFF Positive pressure6 Remove facepiece.t Close cylinder valve.+ Unfasten waistbelt by opening safety

c l i p .+ Loosen shoulder harness straps by

l i f t ing both buck les , remove appara tuscarefully.

4 Do not drop or throw down as seriousdamage could occur to apparatus.

Removal of CylinderDo not attempt to remove cylinder unlesscylinder valve is fully closed and system hasbeen vented,.by pressing centre of protectivecap on demand valve.When vented, reset positive pressure type

demand valve by pressing lever towardsfront cover. (Fig. 5).

To remove cylinder, lift and pull free end ofcylinder retaining strap to release camlockmechan ism, loosen s t rap , unhookanti-vibrationstrap (if fitted) and unscrew pressure reducerhand wheel f rom cy l inder valve.- an t i - c lockw ise .

Visual Inspection and CheckCheck integrity of following after use:a All straps and harness.b Facepiece.

:Valves.Connectors.

e Cylinder supports.

Above checks and monthly checks listed onPage 18, should be carried out after use.See also Routine Maintenance.

Routine MaintenanceTo be performed whenever apparatus hasbeen used, together with monthly tests onPage 18.

Charging of cylindersRecharge cylinder to appropriate pressureas stamped on cylinder.It is only permissible to fill compressed aircylinders which:a

b

C

d

e

Note:

Conform to National Standards inforce within country of use.Are stamped with test date and testmark of inspection authority.Have not exceeded test intervalindicated on cylinder.Do not show signs of damage orcorrosion which could be a potentialhazard, and that cylinder is in goodcondition.Do not show any signs of moisture(waterdrop le ts ) in threadedconnect ion.

Observe the fo l l ow ing , so as t o avo idhigh water content of breathingair in compressed air cylinder:Compressed air cylinders must notbecomple te lyempt ied(de-pressur ised)when used with compressed airrespiratory protection equipment.Mainta in above atmospher ic pressureafter use. If however, cylinder iscompletely emptied, ensure thatcylinder valve is closed.Cylinder valve outlet should beprotected against ingress of dirt andmois ture a t a l l t imes i .e . a f te r remova lfrom compressed air respiratoryprotec t ionequipment , andf i tp ro tec t ivecap immediately after rechargingcylinder.Compressed air cylinders must beprotected against impact and heatwhen transported or stored.

CleaningDirty components must be cleaned carefullyand dried thoroughly after use. Facepieceand demand valve must always be cleaned,disinfected and dried after use.Do not use any organic solvents such asAcetone, Alcohol, Benzene, White Spirit,Trichloroethylene or similar. We recommendthe following:

For cleaning:Drager Wipex ClothsWater and Liquid Soap e.g. EW80

For bath disinfection:Drlger Safety WashlncidurTegodor FRefer to Order L is t for recommended suppl iersof above.Note:

When us ing any o f the above c lean ingand d i s in fec t i ng agen ts , i t i s impor tan tthat precise attention be paidto concentration and reaction times.Refer to manufacturers usage

Note:

l+

instructions.All liquids and in particular disinfectantresidues, must be removed byrinsing in clean running water,immediately after disinfection.Excess water may be removed byusing Wipex Cloths.Do not immerse lung governed demandvalve in water, unless outlet port issealed.When drying, a temperature of 60degrees Ce ls ius sha l l no t be exceeded.

Demand ValvesPASQA, PASOAE a n d PASONShou ld i t be necessary to c lean and d is in fec t -

Fig.12

Itidemand valve, internally, follow theseinstructions:+ Remove rubber protective cover.6 Rotate bayonet cap anti-clockwise

(approx. 90 degrees) using toolPt. No. 16 28089 and remove.

+ Carefully remove diaphragm byunhooking its centre location frombalanced piston lever (Fig.12 ).

Note: To prevent ingress of cleaning fluidi n to ba lancedp i s ton va l ve , un i t shou ldbe pressurised, i . e . balancedpiston closed.

Apply pressure (LP) v iademand valvehose to close balanced piston.PASOA and PASOAE -depress lever(Fig.S)toswitchOFFpositivepressure.Immersedemand regu la tor in c lean ingf lu id (Re fe r toc lean ing f lu id ins t ruc t ions ) .After cleaning ensure demand valveis thoroughly dried.Relocate diaphragm onto balancedpiston lever (Fig.12) and locatediaphragm bead in to groove in demandvalve body (F ig.1 3) -note or ientat ion.Re- f i t bayonet cap - c lockw ise ro ta t ion .

Mois ten l i p o f bayone t cap (w i th wa te r )prior to fitting to prevent rotation ofdiaphragm.Re-check position of diaphragm(Fig.14).Assemble rubber protective cover.Activate demand valve by pressingcentre of front cover to blow-outany fluid residue.Switch off air supply.Carry out function checks Page 11.

F ig : 13

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Ilr) 1,1

Pressure Reducer and HoseAssemblyImportant:- Refer to Important Information,Page 4. Paragraph 7Should it be necessary to remove pressurereducer and hose assembly from backplatefor cleaning and : or disinfection, followthese instructions:Note. Do not immerse pressure reducer

111 water or disrnfectant solution.Use moisfened Wipex Cloths.

Removing Pressure Reducer(Fig.15)+ Unfasten hose loop buckles on

shou lder pads and backp la te to re leasehoses.

+ lJrrscrew hexagon lock-nut; removesocket head screw and washers torelease pressure reducer.

+ Remove mounting pin from reducerandplasticsleevetrom ho le inmount ing

Re-assembly of Pressure Reducer* insert plastic sleeve into hole in

mounting pin, then pin into reducer+ Locate round end of mounting pin

into slot in bracket and square endinto plastic mounting bracket.

+ Insert socket head screw, withwashers. through mounting bracketand mount ing pincross ho le , secur ingwith locking nut.

4 Secure hoses to backplate ,andshoulder pads using hose loops

Shoulder Harness and WaistbeltShould it be necessary to remove shoulderharness and waistbelt from backplate fordecontamination or cleaning, follow theseinstructions, for Professional Harness:

p in . + Align and push waistbelt retaimng+ Reducer and Hose Assembly can buckles (2) through slots in

now be cleaned and disinfected. backplate.

Removing Shoulder Harness+ Loosen hose loop buckles on botll

shoulder pads to free demand valveand gauge hoses.

4 Loosen shoulder strap (2) buckles+ (PA93) Al ign and push inner re ta in ing

buckles through slots in top ofbackplate.

4 (7A93) Align and push lower strapretaining buckles (2) through slots IIIbase of backplate.

t Apply pressure tocentre of shoulderstrap locking plate and rotate 90degrees and remove harnessassembly from slot in backptate

Removina Waistbell

(See note above).

No1a

b

fiq 1 5

Apply pressureto centre of waistbeltpad rotating assembly through 90degrees and remove from slot inbackplate.Waistbelt can only be removed orassembled one way.

te’PA94 Shoulder Harness andWaistbelt remain as assembly afterremoval from backplate.After cleaning dry shoulder harnessand waistbelt at a temperature notexceedmg 60 degrees Celsius

Refitting of harnessRe-fit shoulder harness, then waistbelt tobackplate (reverse of above instructions).Fit CEJN hose (LP Demand Valve Hose)over right shoulder strap and tie hose loop.Fit pressure gauge hose over left shoulderstrap; tie hose loops and snap plastic shroudon gauge hose into securing clip.

Demand Valve MaintenanceNote: Disconnect Demand Valve from

apparatus before commencing dis-assembly.

Replacing diaphragmNote: Depress reset lever (Fig.5) for Type

A andAE.* Remove rubber protective cover and

bayonet cap.+ Carefully remove diaphragm by

unhooking its centre location frombalanced piston lever.

* Relocate new diaphragm ontobalanced piston lever (Fig.12) andlocate diaphragm outer bead intogroove in demand valve body (Fig. 13)note orientation.

+ Refit bayonet cap - check positionof diaphragm (Fig.14).

+ Fit rubber protective cover.+ Carry out operational and function

tests.

Conversion to Twin-Cylinder Unit

PA90 Series compressed air respiratoryprotection equipment can also be adaptedfor use as a twin-cylinder (2x4L) unit, byfitting a ‘Y’-piece connector. See TechnicalData, Page 8 , and Order List, Page 22.To convert to standard (G 518 DIN 477thread) twin-cylinder operation follow theseinstructions:-

* Ensure all connection threads onpressure reducer , ‘Y’ p iece and cy l indervalves are free from damage andthat sealing O-rings are in positionand undamaged.

+ Connect both cylinders to ‘Y’ piece(Fig.16) - do not tighten.

+ Fully open cylinder support strap onbackplate.

Wi th appara tus in hor izon ta l pos i t ion ,slidetwincylinder/‘Y’pieceassemblythrough cylinder support strap andlocate ‘Y’ piece port to pressurereducer hand wheel.Lift unit into upright position andscrew hand wheel on pressure reducerinto ‘Y’ piece port hand tight only(Fig.1 7) .Place unit into horizontal position.A l ign cy l inders cen t ra l l y on backp la teand tighten (handtight)handwheelsinto each cylinder and ‘Y’ pieceport - hook anti-vibration strap toeach hand wheel.Adjust cylinder retaining strap bytaking up slack, then activatecamlock mechanism by pulling endof strapback over cylinders.Locate end of strap in retaining clip.Carry out Operation and FunctionalTests as described earlier.

F ig . 17

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FAULT-CAUSE-REMEDY

FAULT ] POSSIBLE CAUSE 1 REMEDYI

:acepiece leakage:

Faulty or missing sealing Fit or replaceLeak Test with apparatus O-ring for Plug-In connection sealing O-ringI n position)

Exhalation valve leakage Clean and replaceexhalation valveReplace as required

Unsatisfactorycommunication

High pressure leak

Safety reliefvalve venting

Demand valve vents(constant flow)

Whistle does notsound correctly

Speech diaphragm defective Replace as required

Head straps not tight Tighten straps

Speech diaphragm Replace as requireddefective

Check tightness Tighten as requiredof connectionsWhistle continuously Clean and resetin operation

Pressure reducer Return todefective Draeger Service

Banjo O-rings worn Replace as required

Balanced piston leakage Replace as required

Diaphragm fitted Check positionincorrectly refer to manual

Setting has changed Clean and resetWhistle dirty as required

Testing the apparatusThe equipment should be tested as stated inthe relevant Instructions for Use with apparatuslisted below, and/or by reference to appropriateService Manual.

Test Equipment required:Refer to Drager Service Manual.

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Maintenance and Test IntervalsIn addition to work outlined under ‘Routine Maintenance, (which is to be performedwhenever apparatus has been used), regular testing and servicing intervals are to becomplied with, in accordance with this table.This also applies to non-used (in-storage) apparatus

0 Draeger Recommendation

+ C O S H H

C y l i n d e r Charging 0

Charged Pressure Check :

Safety Pressure Test(according to NationalStandards)

C y l i n d e r Basic Overhaul (whenV a l v e necessary)

0---

3sI ’

StorageEnsure that shoulder straps and waistbeltarefully extended. Fold harnessstrapstogetheron car ry ing f rame; fo ld wais tbe l t over harnessstraps (Fig. 18).

Store set ready for use in a cool dryenvironment; free from dust and dirt. Rubberpar ts are to be pro tec ted f rom d i rec t sun l igh t .

If unit is stored, available for use on wall orbulkhead mounting e.g. FireTender, ensure 1that unit is held and supported by cylinder

1

and not backplate of unit.F ig . 18

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