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HELIO2
Helium-Oxygen BlenderService Manual
Model No. PM5400 Series (shown)
PM5500 Series
SAVE THESE INSTRUCTIONS
300 Held Drive Tel: (+001) 610-262-6090Northampton, PA 18067 USA Fax: (+001) 610-262-6080
www.precisionmedical.com
- 1 -HELIO2 Blender
Contents
SECTION 1: SAFETY INFORMATION - WARNINGS AND CAUTIONS .................................2
EXPLANATION OF ABBREVIATION .......................................................... 3
BLENDER DIAGRAMS ............................................................................... 3
COMPONENT DESCRIPTIONS in Blender Diagrams ............................... 4
Example of set-up using a Heliox Cylinder ............................................... 5
SECTION 2: TECHNICAL DESCRIPTION ....................................................................... 6
HELIOX / OXYGEN FLOW PATH INDICATION DIAGRAM ......................... 7
SECTION 3: MAINTENANCE PROCEDURES, REPAIR AND CALIBRATION ................. 8
I. LOW FLOW (PM5400 Model) ................................................................. 8
Step 1: DISASSEMBLY ...........................................................................8
Step 2: CLEANING ................................................................................11
Step 3: LOW FLOW ASSEMBLY ............................................................11
Step 4: TEST .........................................................................................14
Typical Test Configuration Diagram ......................................................14
LOW Flow Operation Verification Procedure ........................................17
II. HIGH FLOW (PM5500 Model) ............................................................... 18
Step 1: DISASSEMBLY ..........................................................................18
Step 2: CLEANING ................................................................................21
Step 3: HIGH FLOW ASSEMBLY ...........................................................21
Step 4: TEST .........................................................................................24
Typical Test Configuration Diagram ......................................................24
HIGH Flow Operation Verification Procedure .......................................27
III. INTERNATIONAL LOW / HIGH Flow Operation Verification Procedure 28
SECTION 5: BLENDER PARTS LIST .............................................................................. 30
Label information ....................................................................................... 31
- 2 -HELIO2 Blender
SECTION 1: SAFETY INFORMATION - WARNINGS AND CAUTIONS
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, may result in minor or moderate injury.
WARNING• Disconnect the HELIO2 Blender from all connections prior to disassembly.• UseMedicalHelioxandMedicalOxygenwhenservicingtoavoidcontamination.• TheHELIO2Blendershouldbeservicedbyaqualifiedservicetechnician.• AnOxygenAnalyzer/Monitormustbeusedtoverifyoxygenconcentrations.• WhenreassemblingtheBlender,donotpressurizethesystemuntiltheretaining
screwoftheProportioningModulehasbeenfullytightened.The Proportioning Module can be forcefully ejected by gas pressure if not sufficiently tightened.
• AlwaysfollowANSIandCGAstandardsforMedicalGasProducts,Flowmeters andOxygenHandling.• WhenservicingrequirementsofDirective93/42/EECconcerningmedical
devices and all International Standards apply. (On CE marked devices ONLY)• DO NOT obstruct the alarm.• Oxygen Concentration Dial does not rotate 360 degrees. Rotatingthedial
beyondtheendpointsettings,willdamagetheBlender.
Service Warning• ThisServiceManual is provided for your safety and to prevent damage to the
HELIO2 Blender. • Itisessentialtoreadandunderstandthisentiremanualbeforeattemptingtoservice
the HELIO2 Blender.• If you have any questions regarding the installation, setup, operation, and/or
maintenance of the HELIO2Blender,contactPrecisionMedical,Inc.
CAUTION• Userecommendedlubricantssparinglyaslubricantmaymigratetootherareasand
cause the Blender to malfunction.• WhenpressurizingtheBlenderinlets,avoidpressuresurgesgreaterthan 100 psi (6.9 bar).• Besureallconnectionsaretightandleakfreebeforereturningtoservice.• StoreBlenderinaclean,dryareawhennotinuse.• DO NOT steam autoclave.• DO NOTgassterilizewith(EtO)EthyleneOxide.• DO NOT immerse HELIO2 Blender into any liquid.• DO NOT use if dirt or contaminants are present on or around the Blender or
connectingdevices.• DO NOT clean with aromatic hydrocarbons.
- 3 -HELIO2 Blender
EXPLANATION OF ABBREVIATION
FIHe-O2FractionalConcentrationofInspiredHelium-Oxygen
FIO2 FractionalConcentrationofInspiredOxygenHeliox Helium-OxygenDISS Diameter Indexed Safety SystemNIST Non-InterchangeableScrewThreadlpm LitersPerMinutepsi Pounds Per Square InchNm Newton meter
BLENDER DIAGRAMS
DA
CB
FG
E
A
H
D
CB
GF
E
H
Note: PM5480 Model Shown
-4-HELIO2 Blender
ITEM COMPONENT DESCRIPTIONS in Blender Diagrams
APrimary Outlet Port AmaleDISSoxygenfittingwithcheckvalvethatdeliversflowwhenengagedtoanycontrollingdevice,suchasaflowmeter.
BOxygen Inlet FittingAfemaleDISSorNISToxygenfittingwithonewayvalvethatisusedtoconnectanoxygensupplyhose.
CHeliox Inlet FittingAmaleDISSorNISThelioxfittingwithonewayvalvethatisusedtoconnectaheliox supply hose.
D
Oxygen Concentration DialA dial used for selecting oxygen concentrations between 20% -100% or30% -100%.TheFIO2 scale is used for reference only. The actual FIO2 must be verified with an Oxygen Monitor.This Dial does not rotate 360°.Thedialstartsat20%or30%andendsat100%.
E Rear Slide Mount with dove tail.
F
Auxiliary Bleed Collar Thecollarisusedtoengageanddisengagethebleed.Thebleedisnecessarytomaintain accurate FIO2Concentrationbelow15lpmfortheHighFlowand≤ 3 lpm fortheLowFlow.Toactivatethebleed,slideandrotate,(ifapplicable)theknurledcollarbackuntil itcontactsthecover.Todeactivatethebleed,pullandrotate(ifapplicable) collar away from cover until bleedflowvalveisclosed.
G
Auxiliary Outlet Port AmaleDISSoxygenfittingwithcheckvalvethatdeliversflowwhenengagedtoanycontrollingdevice,suchasaflowmeter.Thisoutletisequippedwithableedvalve that allows the user to control if the bleed is ON or OFF. With the bleed in theONposition, thisoutletdeliversaccurateoxygenconcentrations in thefollowingflows:
Model Flow RangeHighFlow 2 – 100 lpmLow Flow 0 – 30 lpm
HAlarm An audible alarm that sounds due to an excessive pressure drop or deletion of eithergassupply.
-5-HELIO2 Blender
WARNING• WhenpressurizingtheBlenderinletsavoidpressuresurgesgreaterthan100psi(6.9bar).• AlwaysuseahelioxregulatorwhenusinghelioxcylinderstosupplygastotheHeliox
inlet of the Blender.• Alwaysuseanoxygenregulatorwhenusingoxygencylinderstosupplygastothe
oxygenInletoftheBlender.
example of set-up using a Heliox CylinderNOTE: Heliox regulator in use.
- 6 -HELIO2 Blender
SECTION 2: TECHNICAL DESCRIPTIONThe HELIO2BlenderisamedicaldeviceusedtomixMedicalHelioxandUSPOxygenintoagassourcerangingfrom20-100%or30-100%oxygen.TheinletgasconnectionsarestandardDISSorNISTforeachgas.TheinletsareclearlymarkedandlabeledonthebottomoftheBlender.TheoutletsarestandardDISSmaleoxygenconnections.ThefrontpaneloftheBlenderhasadialthatisusedtosetthespecificFIO2blend.Thedialsettingsrangefrom20-100%onthePM5480&PM5580modelsand30-100%onthePM5470&PM5570models.The Path of the GasesThesupplyentersthroughthehelioxandoxygeninletconnectorslocatedonthebottomoftheBlender.Eachinletconnectorcontainsaparticulatefilterandduckbillcheckvalveswhichpreventpossiblereversegasflow.Diaphragm Housing ModuleThetwogasesthenenterthetwo-stagepressureDiaphragmHousingModule.Inthismodule,thepressuresofbothgassourcesareequalizedpriortoenteringtheProportioningModule.Thepressureisequalizedat the lowerpressure. Thediaphragmwithin themoduleresponds to thedifferenceinpressureanddirects themovementofeachcheckvalveassemblycontainedwithin thehelioxandoxygenchambers.ThemovementofeachballadjuststheamountofgasflowingthroughtheDiaphragmHousingModule,equalizingthehelioxandoxygenpressurestothelowerpressure.Proportioning ModuleFromtheDiaphragmHousingModulethegasesflowintotheProportioningModuleandaremixedaccordingtotheoxygenpercentageselectedontheOxygenConcentrationDial.TheProportioningModuleconsistsofadoubleendedvalvepositionedbetweentwovalveseats.Oneseatcontrolsthepassageofhelioxandtheothervalveseatcontrolsthepassageofoxygenintotheoutlet.Atthispoint,thetwogaseshavebeenblendedaccordingtotheoxygenpercentageselectedontheOxygenConcentrationDial.TheOxygenConcentrationDialinthefullcounterclockwiseposition(20/30%),willcompletelycloseofftheflowofoxygen,allowingonlytheOxygenConcentrationDialinthefullclockwiseposition(100%),willblocktheflowofheliox,permittingonlytheflowofoxygenthroughtheBlenderoutlet.Alarm and Alarm BypassAnaudiblealarmlocatedonthebottomoftheBlendersignalswhenthedifferenceinpressurebetweenthetwoinletgasesis≥ 18 psi for Low Flow and ≥13psiforHighFlow.Whenthesourcegasesarenearequalpressure,thealarmbypasspoppetwillremainseatedoverthealarmchannelandthealarmdoesnotsound.Whenthegaspressuresbecomeunbalancedthehigherpressuregaswillunseatthepoppetbyovercomingthespringforcecausinggastoflowthroughthealarmchannelandthealarmsounds.TheoxygenconcentrationfromtheBlenderwillbethatofthehighergaspressure.TheBlenderinthealarm/bypassmodewilldelivertheoxygen(100%)orhelioxuntilthebypassmechanismresetswhenthesourcegaspressureisrestoredtoadifferentialofapproximately6psi(0.42kg/cm2).IftheBlenderissetat20or30%(dependingonmodel),theOXYGENsourcepressureisreducedorlost,theunitwillnotalarmbecauseitwillcontinuetodeliver20or30%concentrationaccordingtothesetting.Ifthecontrolismovedslightlyfromthe20or30%setting,thealarmwillsound.Similarly,iftheBlenderissettodeliver100%oxygenconcentration and heliox source pressure is reduced or lost, the unit will not alarm because it will continuetodelivertheselected100%concentration. The alarm will not function when there is no flow to the blender.
- 7 -HELIO2 Blender
Gas OutletsThePrimaryandAuxiliaryOutletsareDISSmaleadapterswithcheckvalves.
HELIOX / OXYGEN FLOW PATH INDICATION DIAGRAM
Heliox(DISS shown)
DIAPHRAGMDIAPHRAGM
CHECKVALVE
DUCKBILLCHECKVALVEFILTER
PROPORTION-INGVALVE
ORIFICE
BYPASS CHECKVALVE
ALARMBYPASSVALVE
O2
(DISS shown)
AUDIBLEALARM
- 8 -HELIO2 Blender
SECTION 3: MAINTENANCE PROCEDURES, REPAIR AND CALIBRATION
I. LOW FLOW (PM5400Model) Step 1: DISASSEMBLY
Tools Required
#2 Phillips Screwdriver #3 Phillips Screwdriver 1/2in.OpenEndWrench SpannerWrench(P/N504839)
11/32in.NutDriver5/32in.LongHexKeySmallRetainingRingpliers
Figure A1.Rotatedial[1]tothe12o’clockposition.2.Removethetwoflatheadscrews[2]oneach
side of the top cover [3].3.Removetopcoverbypullingupwards.
The cover will not come off unless the dial is at the 12 o’clock position.
[1]
[2]QUANTITY-4
[3]
Figure B4. Usea½in.openendwrenchtounscrewand
remove the heliox [4] and oxygen [5] inletassemblies from bottom of the Blender. Oxygen inlet has left hand threads.
5. If manifold outlet assembly is present,unscrewthestemusinga5/32hexkeyandholdingthemanifoldoutletassemblytothebottom of the Blender.
6. Removethefourflatheadscrews[2]frombottom cover [6].
7. Remove bottom cover.
[5]
[4]
[2]QUANTITY-4
[6]
- 9 -HELIO2 Blender
LOW FLOW Figure C8.Remove dial [7] by pulling dial away from
manifoldblock[8].9. Remove the primary [9] and auxiliary [10]
outlets(auxiliarycontainsBlueMuffler[38])byusinga½ in. open end wrench to unscrew.
10. Usespannerwrench(P/N504839)tounscrewand remove audio alarm assembly [11] from thebottomofthemanifoldblock.
[8]
[10]
[11][9]
[7]
[38]contained in [10]
Figure D11.Use small retaining ring pliers to remove
retainingrings[12]fromeachsideofthealarmassembly [13]. Push the alarm assembly throughtoremovetheassemblyfrommanifoldblock.
[12]QUANTITY - 2
[13]
Figure E12.Usinga11/32in.nutdriverorsocket,loosen
the nut [14] (ONLY two turns) holding theknob guide [15] on the proportioning valveassembly [16]. Slide knob guide assemblyfromproportioningvalveassemblyshaft.Slideresistancering[17]fromproportioningvalveassembly.
13. Remove phillips head screw [18] and washer [19]fromsideofproportioningvalveassembly.
14.Replaceknobguideassemblyandtightenthe nut.
15.Pull knob guide assembly to removeproportioningvalveassembly frommanifoldblock.Again,loosenthenut(ONLY two turns) holding the knobguide to theproportioningvalve assembly, remove knob guide fromproportioningvalveassemblyshaft.
[14][15]
[16][18]
[19]
[17]
- 10 -HELIO2 Blender
LOW FLOW Figure F16.Removeeachdiaphragmhousingassembly
[20] from themanifold by removing the twohexsocketheadscrews[21]onthetopofeachdiaphragmhousingwith5/32hexkey.
[20]QUANTITY - 2
[21]QUANTITY-4
Figure G17. Using5/32in. longhexwrench,unscrewand
removeplug[22]fromthebottomandbackofthemanifoldblock.
18.Remove rear plug [22] from thebackof themanifold block. Insert a long 5/32 hex keythrough rear plug opening, unscrew andremovethealarmbypassbody[23],ball[24]andspring[25].
QUANTITY - 2
[23][25]
[24] [22]
[22]
Figure H19. RemoveanddiscardthetwoO-rings[26]fromthe
bottomofeachofthediaphragmhousings[27].20.Removethefourhexsocketheadscrews[28]
holdingdiaphragmhousingstogether.21.Removeanddiscardthediaphragm[29].22.Usingspannerwrench,removeanddiscard
checkvalves[30].Ensure inner O-ring is removed from diaphragm housing.NOTE: Ifcheckvalve[30]comesapartwhen
removingitfromdiaphragmhousing,a¼ in. hex wrench or (#3 Phillips Screwdriver) will be needed to complete removal of the checkvalvefromthediaphragmhousing.
23.Repeatsteps19-22fortheremainingdiaphragmhousingassembly.
24.Make sure all O-rings have been removed from diaphragm housings and check valves.
25.Disassemblyiscomplete.26.Manifoldblockanddiaphragmhousingmaybe
ultrasonically cleaned.
[27]
[26]
QUANTITY - 2
QUANTITY-4
[28]QUANTITY-4
[29]
[30]QUANTITY- 2
[36]QUANTITY -2
- 11 -HELIO2 Blender
Step 2: CLEANINGPrecisionMedical,Inc.recommendsusinganultrasoniccleanerforcleaningallnon-elastometric andnon-metallic components.However, cleaningwith anall-purposeliquidcleanerandrinsingwithclean,warmwatermaybesubstituted.Bothmethodsrequirethoroughly blowdrying all passages before reassembly. Follow the ultrasonic cleanermanufacturer instruction.
Step 3: LOW FLOW ASSEMBLY
Tools Required Lint Free Swab (optional)
PointedinstrumentforremovingO-ringsKrytoxGPL106orequivalent
Oxygensafelubricant#2 Phillips Screwdriver
1/2in.OpenEndTorqueWrench(Torque wrench(s) capable of 60 in-lbs and 10 ft-lbs)
11/32in.NutDriver5/32in.LongHexKey
SpannerWrench(P/N504839)SmallRetainingRingPliers
Tools Supplied with Kit DiaphragmAlignmentTool
(P/N504838)
Figure I1.Positionmanifoldblocksothatthemountingbracketisfacingup.Thelargeholesoppositethemountinglocationsofthediaphragmhousingassembliesarefacingyou.
2.ReplaceO-ring[31]onalarmbypassbody[23].3.Cover the alarm assembly thread locationwith
thumb.Dropspring [25] thenball [24] intoalarmbypassorifice.
4.Placealarmbypassbodyontolongshaftof5/32hex key.Guide the alarmbypass body, threadsfirstintothealarmbypassorifice,screwintocavity.Tightenuntilalarmbypassbodyisflushwithbottomof center hole. Tighten enough to clear center threads ONLY.
5.ReplaceO-ring[32]onplug[22].Insertplugandtighten.
[32]
[23]
[31][25]
[24][22]
- 12 -HELIO2 Blender
LOW FLOWFigure J 6.Assemblingdiaphragmhousingassemblies.
a.EnsureallO-ringshavebeenremovedfromdiaphragmhousing.
b.Placediaphragmalignmenttool throughcenterholeofonediaphragmhousing.
c.Placenewdiaphragm[29]ontopofdiaphragmhousing,ensure center pin of diaphragm is in the center ofdiaphragmalignmenttool(P/N504838).
d.Placeotherdiaphragmhousingon topof theonewiththediaphragm.Ensuretheinletholesofthediaphragmhousingsareonthesameside.
e. Fastenthetwodiaphragmhousingstogetherusingfourhexsocketheadscrews[28].Torquescrewsto60in-lbs.
f. Place four newO-rings [26] on the inlet holes of thediaphragmhousings.
g.Removediaphragmalignmenttool.h. PlacenewO-rings[36]ontoeachcheckvalve[30].i. By hand, carefully insert new check valve [30] into
diaphragmhousing.(Check valves are double threaded) Thread check valves into diaphragm housing usingspannerwrench.Checkvalvemustbeflushwithsurfaceofdiaphragmhousing.DO NOT USE power tool to tighten. Repeatthisstepforthesecondcheckvalve.
j. Usingtwolonghexsocketheadscrews[21]secureeachdiaphragm housing assembly to themanifold block.Torque to 60 in-lbs (6.8 Nm).
k.Repeat steps a - i for remaining diaphragmhousingassembly.
[28]QUANTITY-4
[29]
[26]QUANTITY-4
[30]QUANTITY - 2
[21]QUANTITY - 2
[36]QUANTITY - 2
DiaphragmAlignment
Tool
Figure K7. Lubricate alarm bypass assembly bore on manifold
blockwithKrytoxGPL106.8.Usingretainingringpliersinstallretainingring[12]in
one side of alarm assembly bore.9.Insertalarmassembly[13]intoboreofmanifoldblock.10.Installremainingretainingring.11. For Models without manifold block assembly: ReplaceO-ring[32]onplug[22]theninstallplug[22]
intobottomholeofmanifoldblock.12. Thread auxiliary outlet assembly [10] to manifold
block,torqueto10ft-lbs(13.6Nm).[12]
QUANTITY - 2
[10]
[13][32]
[22]
- 13 -HELIO2 Blender
LOW FLOWFigure L13.Remove and discard outerO-ring [32] from
primary outlet assembly.14.Extrudestem[33]fromprimaryoutletassembly
toexposeO-ringonthestem.15.RemoveO-ring[34]fromstem.16.Discardandreplacespring[35].17.Reinsertstem[33]withnewspringintoprimary
outletbody[37].Extrudestemandinstall O-ring[34].18.ReplaceO-ring[32]onoutsideofprimaryoutlet
body [37].19. Reinstall primary outlet assembly torque to
10 ft-lbs (13.6 Nm).
[32]
[33] [35]
[34]
[37]Primary Outlet Assembly
Figure M20. Start threads of new alarm assembly [11] by hand,
tightenwithspannerwrench,ensurenottobendreed.
21.Attach bottom cover [6] using four flat headscrews [2].
22.Installnewoxygeninletassembly[5]torqueto10 ft-lbs (13.6 Nm). Oxygen inlet assembly has left handed threads.
23.Installnewhelioxinletassembly[4],torqueto 10 ft-lbs (13.6 Nm).
[6]
[2]QUANTITY-4
[4]
[5]
[11]
Spanner Wrench(P/N504839)
Figure N24. LubricateproportioningvalveborewithKrytoxGPL106.25. Alignthe(3)holesontheproportioningvalveassembly
[16]equaldistancebetweenthe(2)plugsandpushin.*Referencedrawingbelow.
26. Replace washer [19] and phillips head screw [18].27. Place new resistance ring [17] in its place on the
proportioningvalveassembly.*Proportional valve assembly inserted, with the
“L” stamped on back for Low Flow Model.plugs
[16]
[18][19]
[17]
The “L” is stamped on the back for LOW Flow models
-14-HELIO2 Blender
Step 4: TEST
Equipment Required MedicalHelioxSupplyMedicalOxygenSupply
CalibratedOxygenAnalyzer/MonitorFlowmeter0to70lpmorgreater
CalibratedPressureGauges0to100psiRegulators/Tubing/Hoses
Tools RequiredPhillips Screwdriver
Torque Driver capable of 10 in-lbsAdjustable WrenchRetainingRingPliers
Nut Driver
Typical Test Configuration Diagram
Compressed Heliox Supply
Adjustable 0-100 psi
(0-6.89 bar)
PressureGauge0-100 psi
(0-6.89 bar)
BlenderPressureGauge
0-100 psi(0-6.89 bar)
OxygenSupply
Adjustable 0-100 psi
(0-6.89 bar)
OxygenAnalyzer
OxygenFlowmeter0-70 lpm
T-Fitting
INSTRUCTIONS FOR TESTINGA. Heliox and Oxygen Supply Setup
Bothgassuppliesmustbecleananddryperthespecificationsoutlinedinthismanualandhavetheabilitytogenerateupto100psi(6.89bar)forboththehelioxandoxygeninletpressures.Verifyandrecordthevalueofthehelioxtankconcentrationpriortoconnectinghelioxhosetotank.
-15-HELIO2 Blender
B. Blender Setup1. MounttheBlenderintoasecuredmatingwallorpolebracketinanuprightposition.2. SecurethehelioxandoxygenhosestothecorrespondingBlenderinlets.3. Attachaoxygenflowmetercapableof0-70lpmtotheauxiliaryoutletonthe
Blender.4. Attachat-fittingtotheoutletoftheflowmeter.5. AttachanOxygenAnalyzer/Monitortotheoneoutletonthet-fitting.6. The system is now ready for an initial performance test.
C. Initial Performance TestNOTE: Beforepressurizing,makesureproportioningvalveassembly issecureand
screwistightened.1.PerformcalibrationonOxygenAnalyzer/Monitorperthemanufacture’sinstructionspriortotestingtheBlender.
2.Sethelioxandoxygenpressuresto50psi(3.45bar)each.NOTE:TurnOFFandcheckforleakbywatchingforpressuredropsonpressure
gauges.AssureBleedFlowValveisnotengaged.3. An initial pressure drop may occur, no further drop in pressure should occur.4.Ifcontinuedpressuredropisobserved,troubleshootbyusingacommercialleakdetectortofindsourceofleakandrefertoSection4:TROUBLESHOOTINGforfurther instructions.
5.UsealintfreedryclothtowipeBlendercleanofcommercialleakdetector.6.Ensurebothinletpressuresareat50psi.7. Replace the top cover.
NOTE: DONOTinstallthefour(4)mountingscrewsuntiltheendoftheFinalTest,oraftersatisfactorycompletionofthePerformanceCheck.Refertothe“OPERATINGINSTRUCTIONS”inUsersManual.
8.Setflowmeterto3-3.5lpm.9. Set theBlender to60%FIO2withOxygenAnalyzer/Monitor, this valueshould
remainwithin3.0%oforiginalreadingthroughoutthefollowingtest.a.Setflowmeterto30-30.5lpm,checkconcentrationreading.b.Setflowmeterbackto3-3.5lpm.c. Sethelioxinletpressureto50psi(3.45bar)andtheoxygeninletpressureto
43psi(2.96bar)adjustflowto3-3.5lpm,checkconcentrationreading.d.Sethelioxinletpressureto43psi(2.96bar)andtheoxygeninletpressureto
50psi(3.45bar)adjustflowto3-3.5lpm,checkconcentrationreading.e. If theOxygenAnalyzer/Monitor settingdoesnot remainwithin 3.0%of the
originalreading,thenreplaceoneorbothdiaphragmhousingassemblies.
- 16 -HELIO2 Blender
D. Reverse Gas Flow Procedure(ReferenceOperationalVerificationProcedure#’s2&3inTable,page17or28).
1. AssureBleedFlowValveisnotengaged. Disconnecttheoxygenhosefromthegassource.RemovealloutletconnectionsfromtheBlendertoensurethatthereisnooutletflow.
2. Placethefreeendoftheoxygensupplyhoseunderwater.Graduallyincreasethe heliox supply pressure from 30 -75psi(2.07-5.17bar),checkforleakagepasttheoxygeninletcheckvalve.
3. ReplacetheDuckbillCheckValveintheoxygeninletifleakageis>100ml/min.4. Repeatsteps1-3tocheckforleakagepastthehelioxinletcheckvalve.5. Reconnectthehelioxinlethoseandadjustbothsupplypressuresbackto
standard inlet pressure.
E. Setup of PROPORTIONING VALVE ASSEMBLY1. Sethelioxandoxygeninletpressuresto50psi(3.45bar).2. Setflowto15lpm,measuredwithoxygenflowmeter.3. Turn Adjustment Shaft counterclockwiseuntiltheOxygenAnalyzer/Monitordisplays
a concentration equal to that of the source heliox (±0.3), reference Part A in Setup.4. Attachknobguideassemblyontoadjustmentshaftofproportioningvalveassembly
sothattheknobstoprestsagainstthescrew.Ensureknobstopalignswiththeslotintheresistancering.
5. Whileapplyingdownwardpressuretothetwo(2)screwsontheknobguideassembly,attachnuttoadjustmentshaftusingnutdriver.
6. Turnknobguidefullyclockwise,OxygenAnalyzer/Monitordisplayshouldbeequaltoconcentrationofsourceoxygen(±0.3).
7. Turnknobguidebackto20or30%positiontoensurenodriftfromoriginalreading(±0.3).
8. Torquenuttoadjustmentshaftandtightento10in-lbsusingatorquedriver.9. Snapinknobbackintoknobguide,paycloseattentiontothekeylocationofthe
knob.10.Setknobto12o’clockposition.11. Replace the top cover. NOTE: DONOTinstallthefour(4)mountingscrewsuntiltheendoftheFinalTest.
F. Final Test CompleteOperationVerificationProcedureasperthetesttable,page17or28. Record test results in the test table. WhenFinalTestiscompletereplacetopcoverandinstallthefour(4)mountingscrews
into cover.
NOTE: OperationVerificationProcedureshouldbeperformedatleastonceayear.
- 17 -HELIO2 Blender
USAandCANADAONLYLOW Flow Operation Verification Procedure
(50psi/3.45barMODELS)Serial No.
SEQ#
DIAL SET
Oxygen%
OXYGEN PRESS
±1.0
HELIOXPRESS
±1.0FLOWMETER
SET TOlpm ±0.2
AUXILIARYBLEED FUNCTION TARGET
VALUEACTUALVALUE
psi bar psi bar
1 ANY 50 3.45 50 3.45 closed closed leak <2 psi / 2MIN
*2 60 75 5.17 0 0 0 closed backflow <100ml/min
*3 60 0 0 75 5.17 0 closed backflow <100ml/min
4 20 or 30 50 3.45 50 3.45 3 open end point (±0.3) Source Value
5 40 50 3.45 50 3.45 3 open set point 37.0%-43.0%
6 60 50 3.45 50 3.45 3 open set point 57.0%-63.0%7 80 50 3.45 50 3.45 3 open set point 77.0%-83.0%
8 100 50 3.45 50 3.45 3 open end point (±0.3) Source Value
9 60 50 3.45 50 3.45 1 open set point 57.0%-63.0%10 60 60 4.14 67 4.62 1 open set point 57.0%-63.0%11 60 60 4.14 50 3.45 1 open set point 57.0%-63.0%
12 60 50 3.45Slowly reduce to 30
Slowly reduce to 2.07
3 closed Alarm ON
30.0± 2.0 psi
13 60 50 3.45
SlowlyIncrease
until alarm shuts off
3 closed Alarm OFF
45.0psiMAX
14 60Slowly
Reduce to 30
Slowly Reduce to 2.07
50 3.45 3 closed Alarm ON
30.0± 2.0 psi
15 60
SlowlyIncrease
until alarm shuts off
50 3.45 3 closed Alarm OFF
45.0psiMAX
16 60 50 3.45 50 3.45 MAX closed flowrate 30.0 lpm MIN
17 60 50 3.45 0 MAX closed flowrate 30.0 lpm MIN
18 60 0 50 3.45 MAX closed flowrate 30.0 lpm MIN
19 60 50 3.45 50 3.45 MAX open flowrate 30.0 lpm MIN
*Reference,LetterD.(ReverseGasFlowProcedure)
- 18 -HELIO2 Blender
II. HIGH FLOW (PM5500Model) Step 1: DISASSEMBLY
Tools Required
#2 Phillips Screwdriver #3 Phillips Screwdriver 1/2in.OpenEndWrench SpannerWrench(P/N504839)
11/32in.NutDriver5/32in.LongHexKeySmallRetainingRingpliers
Figure A1. Rotatedial[1]tothe12o’clockposition.2. Removethetwoflatheadscrews[2]oneach
side of the top cover [3].3. Removetopcoverbypullingupwards. The cover will not come off unless the dial
is at the 12 o’clock position.
[1]
[2]QUANTITY-4
[3]
Figure B4.Usea½ in. open end wrench to unscrew and removetheheliox[4]oxygen[5]inletassembliesand primary [9] outlet assemblies from bottom of the Blender. Oxygen inlet has left hand threads.
5.Ifmanifoldoutletassemblyispresent,unscrewthestemusinga5/32hexkeyandholdingthemanifold outlet assembly to the bottom of the Blender.
6.Removethefourflatheadscrews[2]frombottom cover [6].
7. Remove bottom cover.
[5]
[4]
[2]QUANTITY-4
[6]
[9]
- 19 -HELIO2 Blender
HIGH FLOW
Figure C 8.Removedial [7]bypullingdialaway from
manifoldblock[8].9. Remove the auxiliary [10] outlets (auxiliary
containsBlueMuffler[38])byusinga½ in. open end wrench to unscrew.
10. Use spanner wrench (P/N 504839) tounscrew and remove audio alarm assembly [11]fromthebottomofthemanifoldblock.
[8]
[10]
[11]
[7]
[38]contained in [10]
Figure D11.Use small retaining ring pliers to remove
retaining rings [12] fromeach sideof thealarm assembly [13]. Push the alarm assemblythroughtoremovetheassemblyfrommanifoldblock.
[12]QUANTITY - 2
[13]
Figure E12.Usinga11/32in.nutdriverorsocket,loosen
thenut[14](ONLY two turns)holdingtheknobguide[15]ontheproportioningvalveassembly[16].Slideknobguideassemblyfromproportioning valve assembly shaft.Slideresistancering[17]fromproportioningvalve assembly.
13. Remove phillips head screw [18] and washer[19]fromsideofproportioningvalveassembly.
14.Replaceknobguideassemblyandtightenthe nut.
15.Pull knob guide assembly to removeproportioningvalveassemblyfrommanifoldblock.Again,loosenthenut(ONLY two turns) holdingtheknobguidetotheproportioningvalve assembly, remove knob guide fromproportioningvalveassemblyshaft.
[14][15]
[16][18]
[19]
[17]
- 20 -HELIO2 Blender
HIGH FLOWFigure F16.Removeeachdiaphragmhousingassembly[20]
fromthemanifoldbyremovingthetwohexsocketheadscrews[21]onthetopofeachdiaphragmhousingwith5/32hexkey.
[20]QUANTITY - 2
[21]QUANTITY-4
Figure G17. Using5/32in.longhexwrench,unscrewandremove
plugs[22]fromthesideandbackofthemanifoldblock.(ForHighFlowmodelswithamanifoldoutletassembly removeplug from left sideofmanifoldblock insteadof from thebottomof themanifoldblock.)
18.Removerearplug[22]fromthebackofthemanifoldblock.Insertalong5/32hexkeythroughrearplugopening,unscrewand remove thealarmbypassbody[23],ball[24]andspring[25].
QUANTITY - 2
[23][25]
[24] [22]
[22]
[22]
Figure H19.RemoveanddiscardthetwoO-rings[26]fromthe
bottomofeachofthediaphragmhousings[27].20.Remove the four hex socket head screws [28]
holdingdiaphragmhousingstogether.21. Removeanddiscardthediaphragm[29].22.Usingspannerwrench,removeanddiscardcheck
valves [30]. Ensure inner O-ring is removed from diaphragm housing.NOTE: If check valve [30] comes apart when
removingitfromdiaphragmhousing,a¼ in. hex wrench or (#3 Phillips Screwdriver) will beneededtocompleteremovalofthecheckvalvefromthediaphragmhousing.
23.Repeatsteps19-22fortheremainingdiaphragmhousingassembly.
24.Make sure all O-rings have been removed from diaphragm housings and check valves.
25.Disassemblyiscomplete.26.Manifoldblockmaybeultrasonicallycleaned.
[27]
[26]
QUANTITY - 2
QUANTITY-4
[28]QUANTITY-4
[29]
[30]QUANTITY- 2
[36]QUANTITY -2
- 21 -HELIO2 Blender
Step 2: CLEANING
PrecisionMedical,Inc.recommendsusinganultrasoniccleanerforcleaningallnon-elastometriccomponents.However,cleaningwithanall-purposeliquidcleanerandrinsingwithclean,warmwatermaybesubstituted.Bothmethodsrequirethoroughlyblowdryingallpassagesbeforereassembly.Followthemanufacturer’sinstructionforultrasoniccleaning.
Step 3: HIGH FLOW ASSEMBLY Tools Required
Lint Free Swab (optional)PointedinstrumentforremovingO-rings
KrytoxGPL106orequivalentOxygensafelubricant#2 Phillips Screwdriver
1/2in.OpenEndTorqueWrench(Torque wrench(s) capable of 60 in-lbs and 10 ft-lbs)
11/32in.NutDriver5/32in.LongHexKey
SpannerWrench(P/N504839)SmallRetainingRingPliers
Tools Supplied DiaphragmAlignmentTool
(P/N504838)
Figure I1.Positionmanifoldblocksothatthemountingbracketisfacingup.Thelargeholesoppositethemountinglocationsofthediaphragmhousingassembliesarefacingyou.
2.ReplaceO-ring[31]onalarmbypass[23].3.Coverthealarmassemblythreadlocationwiththumb.
Dropspring[25]thenball[24]intoalarmbypassorifice.
4.Placealarmbypassonto long shaft of 5/32hex key.Guide the alarmbypass, threads first into the alarmbypass orifice, screw into cavity.Tighten until alarmbypassisflushwithbottomofcenterhole.
Tighten enough to clear center threads ONLY.5.ReplaceO-ring[32]onplug[22].Insertplugand
tighten.
[32]
[23]
[31][25]
[24][22]
- 22 -HELIO2 Blender
HIGH FLOWFigure J 6.Assemblingdiaphragmhousingassemblies.
a.EnsureallO-ringshavebeenremovedfromdiaphragmhousing.
b. Placediaphragmalignmenttoolthroughcenterholeofonediaphragmhousing.
c. Placenewdiaphragm[29]ontopofdiaphragmhousing,ensurecenterpinofdiaphragmisinthecenteroftool.
d.Placeother diaphragmhousingon topof theonewiththediaphragm.Ensuretheinletholesofthediaphragmhousingsareonthesameside.
e. Fastenthetwodiaphragmhousingstogetherusingfourhexsocketheadscrews[28].Torquescrewsto60in-lbs.
f. Place four newO-rings [26] on the inlet holes of thediaphragmhousings.
g.Removediaphragmalignmenttool.h. PlacenewO-rings[36]ontoeachcheckvalve[30].i. Byhand,carefullyinsertnewcheckvalve[30]intodiaphragm
housing.(Check valves are double threaded). Thread into diaphragmhousingusing spannerwrench,Check valvemustbeflushwithsurfaceofdiaphragmhousing.DO NOT USE power tool to tighten. Repeat this step for the second checkvalve.
j. Usingtwolonghexsocketheadscrews[21]secureeachdiaphragmhousingassemblytothemanifoldblock.Torqueto 60 in-lbs (6.8 Nm).
k.Repeat steps a - i for remaining diaphragm housingassembly.
[28]QUANTITY-4
[29]
[26]QUANTITY-4
[30]QUANTITY - 2
[21]QUANTITY - 2
[36]QUANTITY - 2
DiaphragmAlignment
Tool
Figure K7. Lubricate alarm bypass assembly bore on manifold
blockwithKrytoxGPL106.8.Usingretainingringpliersinstallretainingring[12]in
one side of alarm assembly bore.9.Insertalarmassembly[13]intoboreofmanifoldblock.10.Installremainingretainingring.11.Threadauxiliaryoutletassembly[10]tomanifoldblock,
torque to 10 ft-lbs (13.6 Nm).
[12]QUANTITY - 2
[10]
[13]
- 23 -HELIO2 Blender
HIGH FLOWFigure L12.ReplaceO-ring[32]onplug[22].Installplugand
tighten.
[22]
[32]
Figure M13. Start threads of new alarm assembly [11] by hand,
tightenwithspannerwrench,ensurenottobendreed.14. Attachbottomcover[6]usingfourflatheadscrews[2].15. Installnewhelioxinletassembly[4],torqueto10ft-lbs
(13.6 Nm).16. Installnewoxygeninletassembly[5]torqueto10ft-lbs
(13.6 Nm). Oxygen inlet assembly has left handed threads.
17. RemoveanddiscardouterO-ring[32]fromprimaryoutletbody [37].
18. Extrudestem[33]fromprimaryoutletbody[37]toexposeO-ringonthestem.
19. RemoveO-ring[34]fromstem.20. Discardandreplacespring[35].21. Reinsert stem [33]withnewspring intoprimaryoutlet
body [37].ExtrudestemandinstallO-ring[34].22. ReplaceO-ring[32]onoutsideofprimaryoutletassembly.23. Reinstall primary outlet assembly torque to 10 ft-lbs
(13.6 Nm).
[6]
[2]QUANTITY-4
[4]
[5]
[11]
Spanner Wrench(P/N504839)
[32][34]
[33]
[35]
[37]
Primary Outlet Assembly
Figure N24. LubricateproportioningvalveborewithKrytoxGPL106.25. Alignthe(3)holesontheproportioningvalveassembly
[16]equaldistancebetweenthe(2)plugsandpush in.*Referencedrawingbelow.
26. Replace washer [19] and phillips head screw [18].27. Place new resistance ring [17] in its place on the
proportioningvalveassembly.*Proportional valve assembly inserted, with the
“H” stamped on back for High Flow Model.plugs
[16]
[18][19]
[17]
The “H” is stamped on the back for HIGH Flow models
-24-HELIO2 Blender
Step 4: TEST
Equipment Required MedicalHelioxSupplyMedicalOxygenSupply
CalibratedOxygenAnalyzer/MonitorFlowmeter0to120lpmorgreater
CalibratedPressureGauges0to100psiRegulators/Tubing/Hoses
Tools Required Phillips Screwdriver
Torque Driver capable of 10 in-lbsAdjustable WrenchRetainingRingPliers
Nut Driver
Typical Test Configuration Diagram
Compressed Heliox Supply
Adjustable 0-100 psi
(0-6.89 bar)
PressureGauge0-100 psi
(0-6.89 bar)
BlenderPressureGauge
0-100 psi(0-6.89 bar)
OxygenSupply
Adjustable 0-100 psi
(0-6.89 bar)
OxygenAnalyzer
OxygenFlowmeter0-70 lpm
T-Fitting
INSTRUCTIONS FOR TESTINGA. Heliox and Oxygen Supply Setup
Bothgassuppliesmustbecleananddryperthespecificationsoutlinedinthismanualandhavetheabilitytogenerateupto100psi(6.89bar)forboththehelioxandoxygeninletpressures.Verifyhelioxtankconcentrationpriortoconnectinghelioxhosetotank.
-25-HELIO2 Blender
B. Blender Setup1. MounttheBlenderintoasecuredmatingwallorpolebracketinanuprightposition.2. SecurethehelioxandoxygenhosestothecorrespondingBlenderinlets.3. Attachaoxygenflowmetercapableof0-120lpmtotheauxiliaryoutletonthe
Blender.4. Attachat-fittingtotheoutletoftheflowmeter.5. AttachanOxygenAnalyzer/Monitortotheoneoutletonthet-fitting.6. The system is now ready for an initial performance test.
C. Initial Performance TestNOTE: Beforepressurizing,makesureproportioningvalveassembly issecureand
screwistightened.1.PerformcalibrationonOxygenAnalyzer/Monitorperthemanufacture’sinstructionspriortotestingtheBlender.
2.Sethelioxandoxygenpressuresto50psi(3.45bar)each.NOTE:TurnOFFandcheckforleakbywatchingforpressuredropsonpressure
gauges.AssureBleedFlowValveisnotengaged.3. An initial pressure drop may occur, no further drop in pressure should occur.4.Ifcontinuedpressuredropisobserved,troubleshootbyusingacommercialleakdetectortofindsourceofleakandrefertoSection4:TROUBLESHOOTINGforfurther instructions.
5.UsealintfreedryclothtowipeBlendercleanofcommercialleakdetector.6.Ensurebothinletpressuresareat50psi.7. Replace the top cover.
NOTE: DONOTinstallthefour(4)mountingscrewsuntiltheendoftheFinalTest,oraftersatisfactorycompletionofthePerformanceCheck.Refertothe“OPERATINGINSTRUCTIONS”inUsersManual.
8.Setflowmeterto15lpm.9.Set theBlender to 60%FIO2withOxygenAnalyzer/Monitor, this value should
remainwithin3.0%oforiginalreadingthroughoutthefollowingtest.a.Setflowmeterto30-30.5lpm,checkconcentrationreading.b.Setflowmeterbackto3-3.5lpm.c. Sethelioxinletpressureto50psi(3.45bar)andtheoxygeninletpressureto
43psi(2.96bar)adjustflowto3-3.5lpm,checkconcentrationreading.d.Sethelioxinletpressureto43psi(2.96bar)andtheoxygeninletpressureto
50psi(3.45bar)adjustflowto3-3.5lpm,checkconcentrationreading.e. If theOxygenAnalyzer/Monitor settingdoesnot remainwithin 3.0%of the
originalreading,thenreplaceoneorbothdiaphragmhousingassemblies.
- 26 -HELIO2 Blender
D. Reverse Gas Flow Procedure(ReferenceOperationalVerificationProcedure#’s2&3inTable,page27or28).
1. AssureBleedFlowValveisnotengaged. Disconnecttheoxygenhosefromthegassource.RemovealloutletconnectionsfromtheBlendertoensurethatthereisnooutletflow.
2. Placethefreeendoftheoxygensupplyhoseunderwater.Graduallyincreasethe heliox supply pressure from 30 -75psi(2.07-5.17bar),checkforleakagepasttheoxygeninletcheckvalve.
3. ReplacetheDuckbillCheckValveintheoxygeninletifleakageis>100ml/min.4. Repeatsteps1-3tocheckforleakagepastthehelioxinletcheckvalve.5. Reconnectthehelioxinlethoseandadjustbothsupplypressuresbackto
standard inlet pressure.
E. Setup of PROPORTIONING VALVE ASSEMBLY1. Sethelioxandoxygeninletpressuresto50psi(3.45bar).2. Setflowto15lpm,measuredwithoxygenflowmeter.3. Turn Adjustment Shaft counterclockwiseuntiltheOxygenAnalyzer/Monitordisplays
a concentration equal to that of the source heliox (±0.3), reference Part A in Setup.4. Attachknobguideassemblyontoadjustmentshaftofproportioningvalveassembly
sothattheknobstoprestsagainstthescrew.Ensureknobstopalignswiththeslotintheresistancering.
5. Whileapplyingdownwardpressuretothetwo(2)screwsontheknobguideassembly,attachnuttoadjustmentshaftusingnutdriver.
6. Turnknobguidefullyclockwise,OxygenAnalyzer/Monitordisplayshouldbeequaltotheconcentrationofsourceoxygen(±0.3).
7. Turnknobguidebackto20or30%positiontoensurenodriftfromoriginalreading(±0.3).
8. Torquenuttoadjustmentshaftandtightento10in-lbsusingatorquedriver.9. Snapinknobbackintoknobguide,paycloseattentiontothekeylocationofthe
knob.10.Setknobto12o’clockposition.11. Replace the top cover. NOTE: DONOTinstallthefour(4)mountingscrewsuntiltheendoftheFinalTest.
F. Final Test CompleteOperationVerificationProcedureasperthetesttable,page27or28. Record test results in the test table. WhenFinalTestiscompletereplacetopcoverandinstallthefour(4)mountingscrews
into cover.
NOTE: OperationVerificationProcedureshouldbeperformedatleastonceayear.
- 27 -HELIO2 Blender
USAandCANADAONLYHIGH Flow Operation Verification Procedure
(50psi/3.45barMODELS)Serial No.
SEQ#
DIAL SET
Oxygen%
OXYGEN PRESS
±1.0
HELIOXPRESS
±1.0FLOWMETER
SET TOlpm ±0.2
AUXILIARYBLEED FUNCTION TARGET
VALUEACTUALVALUE
psi bar psi bar
1 ANY 50 3.45 50 3.45 closed closed leak <2 psi / 2MIN
*2 60 75 5.17 0 0 0 closed backflow <100ml/min
*3 60 0 0 75 5.17 0 closed backflow <100ml/min
4 20 or 30 50 3.45 50 3.45 15 closed end point (±0.3) Source Value
5 40 50 3.45 50 3.45 15 closed set point 37.0%-43.0%
6 60 50 3.45 50 3.45 15 closed set point 57.0%-63.0%7 80 50 3.45 50 3.45 15 closed set point 77.0%-83.0%
8 100 50 3.45 50 3.45 15 closed end point (±0.3) Source Value
9 60 50 3.45 50 3.45 1.5 open set point 57.0%-63.0%10 60 60 4.14 67 4.62 1.5 open set point 57.0%-63.0%11 60 60 4.14 50 3.45 1.5 open set point 57.0%-63.0%
12 60 50 3.45Slowly reduce to 31
Slowly reduce to2.14
15 closed Alarm ON
31.0± 6.0 psi
13 60 50 3.45
SlowlyIncrease
until alarm shuts off
15 closed Alarm OFF
45.0psiMAX
14 60Slowly
Reduce to 31
Slowly Reduce to2.14
50 3.45 15 closed Alarm ON
31.0± 6.0 psi
15 60
SlowlyIncrease
until alarm shuts off
50 3.45 15 closed Alarm OFF
45.0psiMAX
16 60 50 3.45 50 3.45 MAX closed flowrate 120.0 lpm MIN
17 60 50 3.45 0 MAX closed flowrate 85.0lpmMIN
18 60 0 50 3.45 MAX closed flowrate 85.0lpmMIN
19 60 50 3.45 50 3.45 MAX open flowrate 120.0 lpm MIN
*Reference,LetterD.(ReverseGasFlowProcedure)
- 28 -HELIO2 Blender
III. INTERNATIONAL LOW / HIGH Flow Operation Verification Procedure (60psi/4.14barMODELS)
Serial No.
SEQ#
DIAL SETOxygen%
OXYGEN PRESS
±1.0
HELIOXPRESS
±1.0
FLOWMETERSET TOlpm ±0.2
AUXILIARYBLEED
FUNCTION
TARGET VALUE ACTUAL
VALUE
psi bar psi bar Low Flow
High Flow
LOWFLOW
HIGHFLOW
Low Flow
High Flow
1 ANY 60 4.14 60 4.14 closed closed leak <2 psi / 2MIN
*2 60 75 5.17 0 0 0 closed backflow <100ml/min
*3 60 0 0 75 5.17 0 closed backflow <100ml/min
4 20 or 30 60 4.14 60 4.14 3 15 open closed end point (±0.3) Source Value
5 40 60 4.14 60 4.14 3 15 open closed set point 37.0%-43.0%
6 60 60 4.14 60 4.14 3 15 open closed set point 57.0%-63.0%
7 80 60 4.14 60 4.14 3 15 open closed set point 77.0%-83.0%
8 100 60 4.14 60 4.14 3 15 open closed end point (±0.3) Source Value
9 60 60 4.14 60 4.14 1 1.5 open set point 57.0%-63.0%
10 60 60 4.14 70 4.83 1 1.5 open set point 57.0%-63.0%
11 60 60 4.14 53 3.65 1 1.5 open set point 57.0%-63.0%
12 60 60 4.14SlowlyLowerto40
SlowlyLowerto 2.76
3 15 closed Alarm ON
42.0±2.0 psi
31.0±6.0 psi
13 60 60 4.14Slowly
Increase to 60
SlowlyIncrease to4.14
3 15 closed Alarm OFF
55.0psiMAX
14 60SlowlyLowerto40
SlowlyLowerto 2.76
60 4.14 3 15 closed Alarm ON
42.0±2.0 psi
31.0±6.0 psi
15 60Slowly
Increase to 60
SlowlyIncrease to4.14
60 4.14 3 15 closed Alarm OFF
55.0psiMAX
16 60 60 4.14 60 4.14 MAX closed flowrate30.0 lpm MIN
120.0lpmMIN
17 60 60 4.14 0 0 MAX closed flowrate30.0 lpm MIN
85.0lpm MIN
18 60 0 0 60 4.14 MAX closed flowrate30.0 lpm MIN
85.0lpm MIN
19 60 60 4.14 60 4.14 MAX open flowrate30.0 lpm MIN
120.0 lpmMIN
*Reference,LetterD.(ReverseGasFlowProcedure)
- 29 -HELIO2 Blender
SECTION 4: TROUBLESHOOTINGTest #’s Problem Probable Cause Remedy
1
Pressure drop greater than 2 psi in two minutes
Leakagefrommanifoldcausedbycutormissingo-ringorduetoparticulates.
CheckALLmanifold connections (inlets, outlets,plugs,proportioningvalve,alarmpoppet,etc.)withoxygenleakdetectortofindsourceofleakage;ifleakis found, remove appropriate parts and clean seal areaando-ringsand/orreplaceappropriateo-ring.
Leakagefromdiaphragmhousingcausedbydamageddiaphragmorparticulates.
Checkdiaphragmhousingswithoxygenleakdetector.Ifleakisfound,disassemblediaphragmhousingassemblyandcleansealareaanddiaphragmand/orreplacediaphragm.
Leakagefromcheckvalve/diaphragmhousingsealcausedbycutormissing o-ringorduetoparticulates.
Check check-valve/diaphragm housing seal withoxygenleakdetector. If leak isfound,removecheckvalve, clean seal area and o-ring and/or replace o-ring.Note: be sure to re-install washer (if present).
Ballnotsealinginthealarmbypass. Replacespringandballinalarmbypass;ensureseal surface is clean.
Auxiliary bleed is open. Closeauxiliarybleedbyturningandpullingknurledcollar away from cover until bleed is closed.
Leakagefromoneoftheoutlets. Replace outlet.
2 and 3 Back flow leak Faulty inlet. Replaceduckbillvalveorentireinletassembly.
4 thru 8
Measured FIO2 values do not meet target values
Outletflowislessthan3lpm. Adjustflowmeterto3lpm(Note:flowmustbeadjustedaftereachchangein FIO2 setting).
Proportioningvalveendpointsarenotsetcorrectly.
Setproportioningvalveendpoints(see setup procedure in Section E).
Diaphragmblocksnotbalancingproperly.
Refurbish diaphragm block assembly with newdiaphragmandcheckvalves.Note: be sure to re-install shimwasherundercheck-valveassembly(ifpresent).
Internalleakageinproportionvalve. Removeproportioningvalve;cleansealareasand/orreplacethetworearo-rings.Ifnecessary,replaceproportioningvalveassembly.
9 thru 11
Measured FIO2 values do not meet target values
Bleed not open. Openbleedbyturningandpushingtheknurledcollar until it contacts the cover.
Blockageinbleedholes. Replace auxiliary outlet.Internalleakinproportioningvalve. Removeproportioningvalve;cleansealareasand/
orreplacethetworearo-rings.Ifnecessary,replaceproportioningvalveassembly.
Flow not set to 1 lpm. Adjustflowto1lpm.Diaphragmblocksnotbalancingproperly. Replacediaphragmblock.
12 and14 Alarm not audible and gas is not exiting the alarm vent
Pressuredifferentialnotsufficienttotriggeralarm.
Ensuresupplypressuresaresetproperlytoachievedifferential (Low Flow:18to22;High Flow:13-25).
Alarm not audible and gas is exiting the alarm vent
Faulty alarm. Replace alarm. (See Figure C & M)
13 and 15 Alarm does not turn off after balancing supply pressures
Faulty alarm assembly. Replace alarm assembly. (See Figure D & K)Ballnotsealinginthealarmbypass. Replacespringandballinalarmbypass;ensure
seal surface is clean.
16 thru 19
Measured flow values do not meet minimum target values
Gasinletsarerestricted. Checkappropriategasinlet(s)forrestrictioningaspathway;replaceduckbillorentireinletasnecessary.
High flow model only:lowflowinletsinstalledinplaceofhigh-flowinlets.
Confirmthathigh-flowinletsareinstalled;replaceas necessary.
Alarm bypass is threaded too far into manifold block(only applicable to tests 17 and 18).
Replaceballandspring(seeFigureIforproperassembly method).
High flow models only:wrongballinalarmbypassblock(only applicable to tests 17 and 18).
Confirmthatcorrectballisinstalledinalarmbypass;replaceasnecessary.
- 30 -HELIO2 Blender
SECTION 5: BLENDER PARTS LIST LOW FLOW PM5400
HIGH FLOWPM5500PART # DESCRIPTION
1 504562 CONTROLKNOB(DIAL)
2 504720 SCREW,FLTHD,#8-32,1/2LG,100DEG
3 504718 TOPCOVER
4 506090HELIUMINLETASSEMBLY
505989
5 504537OXYGENINLETASSEMBLY
505046
6 504719 BOTTOMCOVER
7 504562 CONTROLKNOB(DIAL)
8 504605 MANIFOLDBLOCK
9504546
PRIMARYOUTLETASSEMBLY
504741
10 504791AUXILIARYOUTLETASSEMBLY
504550
11 504566 AUDIOALARMASSEMBLY
12 504536 RING,RETAINING,HOTYPE,.562BORE,STL
13 504530 ALARMASSEMBLY
14 504702 NUT,HEX,LOCK,#8-32
15 504938GUIDEKNOBASSEMBLY
505030
16 504664setPROPORTIONINGVALVEASSEMBLY
504557set
17 505009 RESISTANCERING
18 504561 SCREW,PANHD,#6-32,1/4LG,CR,SST
19 504684 WASHER,FLAT,.281,.140,.030,SST
20 *505002 DIAPHRAGMHOUSINGASSEMBLY
21 504526 SCREW,HEXSOCHD,#10-32,2.00LG,SST
22 504528 PLUG
23 504553 ALARMBYPASSBODY
24 504870 BALL,.188DIA,BUNA-N,70DUROMETER
25 504519SPRING,ALARMBYPASS
505043
26 504122 O-RING,#008,SILICONE,70DUROMETER
27 504522 DIAPHRAGMHOUSING
28 504525 SCREW,HEXSOCHD,#10-32,3/4LG,SST
29 505004 DIAPHRAGM
30 505003 CHECKVALVE
31 504122 O-RING,#008,SILICONE,70DUROMETER
32 504686 O-RING,#013,SILICONE,70DUROMETER
33 504628STEM,PRIMARYOUTLET
504743
34 1013 O-RING,#006,BUNA-N,70DUROMETER
35 0143 PRIMARYVALVESPRING
36 504997 O-RING,10MMX1.5MM,VITON,75DUROMETER
37 504547PRIMARYOUTLETBODY
504742
38 504705 BLUEMUFFLER,WASHER (NOt SOlD Separately, iNCluDeD iN 504791 & 504550)
N/A 506125/506126 SERVICEKITS-PM5470/PM5480
N/A 506212/506213 SERVICEKITS-PM5570/PM5580
* NOT sold assembled.
- 31 -HELIO2 Blender
LABEL INFORMATION
Part # Label Description Low Flow PM5400
High FlowPM5500
Location(Blender with dial facing you)
506122Primary Outlet
Left Side on top cover
506019
506008 HELIO2 80-20 LeftandRightSideontopcover
506013 HELIO2 70-30
505961Scale 20-100
Bottom Front on top cover
505960
505974Scale, 30-100
Bottom Front on top cover
505973
506011 Warning TopBackontopcover
506004 Face
Top Front on top cover
506003Auxiliary Outlet
RightSideontopcover
506020
506018 Bottom
BottomCover
506007 PM5580Model#,Serial# BottomBackonrearslidemount
506012 PM5570Model#,Serial#
506026 PM5480Model#,Serial# BottomBackonrearslidemount
506021 PM5470Model#,Serial#
For customized Blenders with special labels, contact Precision Medical, Inc.
- 32 -HELIO2 Blender
PrecisionMedical,Inc.300 Held Drive
Northampton, PA 18067 USA
TollFreeTel:800-272-7285 TollFreeFax:800-353-1240 Tel:(+001) 610-262-6090 Fax:(+001) 610-262-6080
506124 Rev2 090811 Printed in USA