Cressi RAFFAELLO - NITROX GAS SETTINGS AND PO2

17
English
Each icon indicates that as a result the computer has changed its mathematical
model as a function of the altitude set.
Clearly,thismustcorrespondtotheactualaltitudereached,andmustfallwithin
thealtitudelevelsonthecomputer(none,one,two,orthreemountains).When
divingatanaltitudehigherthantheonewherethediverusuallylives,thebody
experiencesalterationsduetonitrogenoversaturationanditmustrebalanceitself
withtheexternalenvironment.It isimportanttokeep in mindthatbecauseof
thelowerpartialpressureoftheoxygenintheatmosphere,ourbodyneedsan
acclimatizationperiod.Thereforewerecommendafterarrivingataltitudethatyou
waitatleast12to24hoursbeforetakingadive.
I DANGER: DONATELLO/MICHELANGELO/RAFFAELLO does not
automatically handle dives at a location above sea level. Thus, it is mandatory
tocorrectlysetthealtitudelevelandrespecttheacclimatizationperiodbefore
diving.
I DANGER:Divingataltitudesgreaterthan9,842ft/3,000mabovesea
levelinvolvesanincreaseriskofdecompressionsickness.
DEPTH (MAXIMUM DEPTH ALARM)
The DONATELLO/MICHELANGELO/RAFFAELLO computer has a maximum
depthalarmthatcanbesetbytheuser,whichisveryhelpfulforteachingdives.
Thealarmcanbeadjustedfromamaximumof164ft/50mtoaminimumof
32ft/10minincrementsof6ft/2m.Tosetthemaximumdepthlimit,fromthe
DEPTHscreen,givethebuttonaLong
Short \ NEXT (ONE STEP)
Long (3 Sec.) \ RETURN
Long (1 Sec.) \ ENTER \ ESC
press to enter the function, and
then give a Short
Short \ NEXT (ONE STEP)
Long (3 Sec.) \ RETURN
Long (1 Sec.) \ ENTER \ ESC
presstosetthemaximumdepthdesired,andconrm
withaLong
Short \ NEXT (ONE STEP)
Long (3 Sec.) \ RETURN
Long (1 Sec.) \ ENTER \ ESC
press.
MAXIMUMDEPTHALARMDURINGTHEDIVE:
Whenthemaximum depth setisexceededduring thedive,threeconsecutive
audiblebeepswillsound,andthedepthvaluewillashuntilthediverreturns
withinthesetthreshold.
NOTE: thecomputerissetinthefactorywithDEPTHsettoOFF.
OXYGEN PARTIAL PRESSURE (PO2)
The company sets DONATELLO/MICHELANGELO/RAFFAELLO to an Oxygen
PartialPressure(PO2)valueof1.4barbothforAirandNitroxdivestoensure
maximumsafetyduringanytypeofdive.
OXYGEN PARTIAL PRESSURE SETTING (PO2) (AIR)
(DONATELLO/MICHELANGELO/RAFFAELLO): OnthePPO2screen,givethe
button a Long
Short \ NEXT (ONE STEP)
Long (3 Sec.) \ RETURN
Long (1 Sec.) \ ENTER \ ESC
press to enter the function. The value of the partial pressure
willbegintoash.
UseShort
Short \ NEXT (ONE STEP)
Long (3 Sec.) \ RETURN
Long (1 Sec.) \ ENTER \ ESC
presses until you have set the desired partial pressure.
Give a Long
Short \ NEXT (ONE STEP)
Long (3 Sec.) \ RETURN
Long (1 Sec.) \ ENTER \ ESC
press to conrm your choice. The computer will give a
confirmation beep.
Then press Longer
Short \ NEXT (ONE STEP)
Long (3 Sec.) \ RETURN
Long (1 Sec.) \ ENTER \ ESC
to return to the main menu.
SETTING %O2 OXYGEN PERCENTAGE AND PRESSURE
PARTIAL OXYGEN PO2 (NITROX)
DONATELLO: on the %O2 screen,Long
Short \ NEXT (ONE STEP)
Long (3 Sec.) \ RETURN
Long (1 Sec.) \ ENTER \ ESC
press the button to enter the
function.
TheO2percentagewillstartashing.
Give a Short
Short \ NEXT (ONE STEP)
Long (3 Sec.) \ RETURN
Long (1 Sec.) \ ENTER \ ESC
presstoincreasetheoxygenpercentage(theavailablevalues
rangefrom21%to50%inincrementsof1%).
Onceyoureachthepercentageyouwant,Long
Short \ NEXT (ONE STEP)
Long (3 Sec.) \ RETURN
Long (1 Sec.) \ ENTER \ ESC
press to confirm.
Thecomputerwillbeeptoconrm.
Next,Short
Short \ NEXT (ONE STEP)
Long (3 Sec.) \ RETURN
Long (1 Sec.) \ ENTER \ ESC
presstomovethePPO2screen.Ifyouwanttochangethe
partial pressure, Long
Short \ NEXT (ONE STEP)
Long (3 Sec.) \ RETURN
Long (1 Sec.) \ ENTER \ ESC
press to enter this function.
ThenbrieyShort
Short \ NEXT (ONE STEP)
Long (3 Sec.) \ RETURN
Long (1 Sec.) \ ENTER \ ESC
press the button to set the desired partial pressure, and
conrmwithaLong
Short \ NEXT (ONE STEP)
Long (3 Sec.) \ RETURN
Long (1 Sec.) \ ENTER \ ESC
press.Thecomputerwillbeeptoconrm.
Then press Longer
Short \ NEXT (ONE STEP)
Long (3 Sec.) \ RETURN
Long (1 Sec.) \ ENTER \ ESC
to return to the main menu.