Sealey SGA3-FBA Oxygen Flash Back Arrestor User manual

Brand: Sealey

Model: SGA3-FBA Oxygen Flash Back Arrestor

Type: User manual

OXYGEN/FUEL FLASHBACK

MODEL NO’S: SGA3/FBA, SGA4/FBA

Thank you for purchasing a Sealey product. Manufactured to a high standard, this product will, if used according to these instructions,

and properly maintained, give you years of trouble free performance.

IMPORTANT: PLEASE READ THESE INSTRUCTIONS CAREFULLY. NOTE THE SAFE OPERATIONAL REQUIREMENTS, WARNINGS & CAUTIONS. USE

THE PRODUCT CORRECTLY AND WITH CARE FOR THE PURPOSE FOR WHICH IT IS INTENDED. FAILURE TO DO SO MAY CAUSE DAMAGE AND/OR

PERSONAL INJURY AND WILL INVALIDATE THE WARRANTY. KEEP THESE INSTRUCTIONS SAFE FOR FUTURE USE.

Refer to

instruction

manual

SGA3/FBA, SGA4/FBA Issue 1 16/12/2022

Original Language Version

Wear eye

protection

1. SAFETY

1.1. SPECIFIC FLASHBACK ARRESTOR SAFETY WARNINGS

9 Theinformationontheashbackarrestorsuchasdescriptionofgas,maximumoperatingpressureanddirectionofowsignhas

 tobefollowed.

9 Morethanonecomponentshouldn’tbeconnectedtotheashbackarrestor.

9 Nomarking(e.g.itemnumber,dateofrstoperationetc.)byscratchingorpunchingisadvised.Underthesecircumstances,

9 Flashbackarrestormaygetdamagedandleakagemayoccur.

9 Flashbackarrestorsshouldbeusedaccordingtotheinformationmarkedonthem.

9 Theseproductsaremanufacturedbylatesttechnologyregardingtospecifytechnicalrules,presentstandardsandinstructions.

9 Usermustfollowtherecommendationsinthismanual.

9 Stathatuseweldingequipmentandtheircomponentsshouldhaveknowledgeabouttheseprocessesorbetrainedbyregisteredby

 institute/staaccordingtocurrentregulationsinplace.

9 Alwayshaveareextinguishernearby.

9 Itisimportanttoreadtheinformationontheashbackarrestorwhichgivesadescriptionofgas,maximumoperatingpressureand

 directionofowwhichneedstobenotedandobserved.

9 Morethanonecomponentshouldn’tbeconnectedtotheashbackarrestor.

1.2. SITUATIONS THAT MAY CAUSE FLASHBACK

9 Whencuttingtorchisdamagedorusedincorrectly.

9 Whenhighpressurizedoxygengasmixedinthelowpressurizedammablegasttingasaresultofwrongadjustmentofoperating

pressures.

9 Whencomponentsconnectedwhicharenotsuitableforeachother.

9 IftheOxygencylinderrunoutofgas;ammablegasowsinsidetheoxygencylinderreverselythroughregulator.

9 Whenuntutoredandinexperiencedusersusetheproducts.Wheninstructionsarenotfollowed.

9 Whencomponentsareconnectedwiththewrongtools.

9 Usageofgasesorpressuresdierentthanoneswhicharedenedonthismanualandontheproduct.

9 Whenproductisusedattemperaturesunder-20°Candover+60°C.

1.3.  Keepawayfromameatalltimes.Makesurethathosesarelaidatwherepossibleandnotinapositionwheretheycanbe

 runoverbyvehicles,whichwouldresultinpermanentdamage.

9 Emptycylindersshouldbekeptinspeciedareasandclearlymarked‘EMPTY’.

8 Neveruseoilorgreaseonanyinletconnections,outletconnectionsorcylindervalves.

9 Examinehosesforcuts,burnsorwornareasbeforeeachuse.Alsoinspectttingsfordamage.Ifanydamageisfound,replace 

immediately.

8 DO NOTrepairhoseswithtape.

9 Keepallthreadsandunionscleanandfreefromoil,dirtorgrease.

8 Neverapplyoilorgreasetoanythread.

9 Makesurebottlekeysareinplaceatalltimessothatintheeventofanemergencythevalvescanbeturnedoquickly.

9 LEAKINGHOSESCANKILL.Leaktestallconnectionsandvalvespriortoeachuseoftheequipment.

8 DO NOTjoindamagedhoses,theymustbereplacedimmediately.

9 Rememberatalltimes BLUE=OXYGEN‘O’ RED=ACETYLENE‘A’.

8 Atnotimemayyouinterchangethispartwiththoseofothermanufacturers.

9 OnlySealeyreplacementitemsshouldbeused.

9 Allrepairs/calibrationsmustonlybeundertakenbyaBCGAapprovedserviceagent.

2. INTRODUCTION

 Protectsoperators,regulatorsandgassupplyfromtheconsequencesofsevereformsofashback.Colourcodedforeasy 

 recognition.ItalsoconformstoBSENISO5175-1:2017standard.

Original Language Version

3. SPECIFICATION

Model No: ............................... SGA3/FBA /SGA4/FBA

Gas Type SGA3/FBA: .......................................Oxygen

Gas Type SGA4/FBA ..................................... Acetylene

MaximumPressure ..............................................20bar

4. DEFINITIONS

4.1.  Flameashbackisfastmovementofametothesourceofgas

 (Cylinder,tank,installation,hoseetc.)whichisformedduring

 welding,cuttingetc.madebymixtureofoxygenandammablegas.

4.2.  Flashbackarrestorsaresecuritydevices,whichpreventtheowof

 gasduringashback.Thearrestorpreventstheamespreadto

 gassourcebyblockingtheameandstoppinggasow.

5. FUNCTIONS REFER TO FIG.2

5.1. THERMAL CUT-OFF VALVE

 Thespringinsidetheashbackarrestorblocksthevalvewhichiscontinuouslypressedagainstthegasowdirection.Whename

 ashbackoccurs,thesolderwhichholdsthespring,meltswiththehightemperature.Thespringisthenreleasedandthe 

 connectedvalvestopsgasow.

5.2. FLAME ARRESTOR

 Astainlesssteellterstopstheamereachingtheashbackarrestorandpreventsitreachingthesourceofgas.

5.3. GAS NON-RETURN VALVE

 Preventsthegasowinginreversedirection.

5.4. WORKING PRINCIPLES

5.4.1. Thespringinsidetheashbackarrestorforregulatorsblocksthevalvewhichiscontinuouslypressedagainsttogasowdirection.

5.4.2. Thepressureoftheowinggasreleasesthecompressionofspringandpermitsthegasowthroughthetorch.

5.4.3. SinteredstainlesssteelCr-Nidesignedlterinsidetheashbackarrestorholdstheameforashback.

5.4.4. Thesoldermeltsduringanyameashbackifthetemperaturereaches100°C,pinfreesfromthesolderandcutsthegasow.

5.4.5. Afterthatashbackarrestorcannotbeusedanymoreandshouldbechanged.

6. ASSEMBLY REFER TO FIG.1

6.1.  Checkallconnectionsthattheyarecleanandundamagedbeforeassembly.

6.2.  Assembletheproductaccordingtothedirectionofgasow.

6.3.  Checkforleakageatmaximumoperatingpressureafterassembly.

6.4. Hoses and their connections must meet current standards in place.

6.5.  Hosesshouldbexedinasuitablemanner(e.g.hoseclamp).

6.6.  Tightenthearrestorconnectionsusingasuitabletool.

▲ DANGER: For the productswhichareusedforOxygen,allconnectionsandunitsshouldbefreeofgrease.

7. MAINTENANCE

7.1.  Theashbackarrestorsaretobetestedbyaqualiedandauthorisedpersonatregularintervalsaccordingtoregulationsinplace.

7.2.  Theashbackarrestoristobetestedforgastightnessandgasreturnaccordingtoregulationsinplace.

7.3.  Couplingsarewearingpartsandhavetobetestedbyaqualiedandauthorisedpersonaccordingtoregulationsinplace.

 Thesetestshavetobeperformedwhenthecouplingsconnectedaswellasdisconnected./TRANSPORTATION

7.4.  Storetheproductinsidethepackageduringtransportationtoavoiddamage.

7.5.  Productshouldbestoredinitspackaginguntilused.Keepawayfromgreaseandotherdirtsources.

7.6.  Productsshouldbestoredintemperaturesbetween+5°Cand+35°Candkeptawayfromdustandhumidity.

8 DO NOTuseproducts,whicharedamagedduringtransportationorstorage.     

g.1

g.2

SGA3/FBA, SGA4/FBA Issue 1 16/12/2022

Sealey Group, Kempson Way, Suffolk Business Park, Bury St Edmunds, Suffolk. IP32 7AR

01284 703534 sales@sealey.co.uk www.sealey.co.uk

ENVIRONMENT PROTECTION

Recycleunwantedmaterialsinsteadofdisposingofthemaswaste.Alltools,accessoriesandpackagingshouldbesorted,

takentoarecyclingcentreanddisposedofinamannerwhichiscompatiblewiththeenvironment.Whentheproduct

becomescompletelyunserviceableandrequiresdisposal,drainanyfluids(ifapplicable)intoapprovedcontainersand

disposeoftheproductandfluidsaccordingtolocalregulations.

Note:Itisourpolicytocontinuallyimproveproductsandassuchwereservetherighttoalterdata,specificationsandcomponentpartswithoutprior

notice.

Important:NoLiabilityisacceptedforincorrectuseofthisproduct.

Warranty:Guaranteeis12monthsfrompurchasedate,proofofwhichisrequiredforanyclaim.

Original Language Version

PURCHASE HERE

8. TROUBLESHOOTING

No gas ow. Checkowdirection,workingpressure,shut-ovalve,gassource,cuto

valveandthecouplingisn’tlockedo.

Pressure sensitive gas cut-o valve PV. Agreencollarcoversaresetcollar.Inordertoresettheuserhastolook

forthecauseoftheashback,thenmovethesleeveinthedirectionofthe

arrow.Providingthecauseisfound,thesafetydevicecanberesetandwork

can resume.

The thermal shut o valve was activated TV. Thedevicehastobereplaced.

External tightness. Dustanddamagescancauseleakageofcouplingsandcouplingpins.

Therefore,theyhavetobecheckedaccordinglyandreplacedifnecessary.

Gas return NV. Thedevicehastobereplaced.

Leaking in disconnected situation. Unittobeexchanged(onlythosewithaintegratedcoupling).

SGA3/FBA, SGA4/FBA Issue 1 16/12/2022

Sealey SGA3-FBA Oxygen Flash Back Arrestor User manual

Sealey SGA3-FBA Oxygen Flash Back Arrestor User manual

Sealey SGA3-FBA Oxygen Flash Back Arrestor User manual

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