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5. PREPARING FOR USE

BeforeassemblingtheSCUBAunitverifythatallcomponentscomplywithlocalorEuropean

standards.

• Beforeconnectingtherststagetothecylinderverifythattheconnectionisfreefrom

dirt(sand,debris)andthattheO-ringisundamaged.

• INTconnection:placetherststageconnectoronthecylindervalveafterchecking

thatitisalsofreefromdirtordebris.Checkthatthecontactsurfacesareinthecorrect

positionandthentightentheyokescrew.Inordertoobtainthemaximumcomfort,the

lowpressurehoseconnectingtherststagetothesecondstageshouldbehorizontal

anddirectedtowardthediver’srightshoulder(Img.1).

• DINconnection:screwtherststageconnectoronthecylindervalveaftercheckingthat

thisisalsofreefromdirtordebris.Beforetighteningthehand-wheelandwhilescrewing

itin,conrmthatthethreadsontheDINconnectionandonthevalvecorrespond

correctlyandarenotcrossed.Inordertoobtainthemaximumcomfort,thelowpressure

hoseconnectingtherststagetothesecondstageshouldbehorizontalanddirected

towardthediver’srightshoulder(Img.2).

Img. 1 Img. 2

• Fitthecarryingsystem/jacket(refertotheappropriateuserinstructionguide).Aftertting

thecarryingsystem,thecylindershouldsitsecurely.Checktobesurethatthecylinder

cannotcomelooseonitsownaccord.

• Conductavacuumleaktest.Withthecylindervalveclosedslowlyinhalefromthe

secondstage.Itshouldbepossibletoachieveandmaintainaminimalnegativepressure

withoutairenteringthesystem.Thistestmustberepeatedforallregulatorsecond

stagesconnectedtotheSCUBAunitinuse.

• Nowconductahigh-pressureleaktest.Slowlyopenthecylindervalve,checkforany

leaksandreadthepressureregisteredonthepressuregauge.

5.1 Set-up/in-usewarning

WARNING

While opening the cylinder valve, the pressure gauge face must not be directed

towards the user or others, in the event and risk of a pressure gauge malfunction.

WARNING

When opening the cylinder valve the second stage purge button should be slightly

depressed, so that the second stage valve is open.

Uwatec AIR2 User Manual

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