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Aqua Lung i550 Owner'S Manual Download Page 8

Doc. 12-7840-r03  (3/28/16)

8

GETTING STARTED

© Aqua Lung International, Inc. (2016)

DISPLAY ICONS

1

Depth ID (units)

2

Partial Pressure of Oxygen

3

Deep Stop

4

Safety Stop

5

Gas Time Remaining

6

Decompression Stop Triggered 

7

Descend, Ascend, or Stop

8

Low Battery

9

Value is Maximum

10 Oxygen Saturation

11 Fraction of Oxygen

12 Time To Surface

13 Temperature

14 Dive Time or Dive #

15 Surface Time

16 Gas #

17 Value is Pressure

8

7

1

9

1

2

3

4

6

17

10

11

12

13

14

15

16

5

Summary of Contents for i550

Page 1: ... Aqua Lung International Inc 2016 Dive Computer Owner s Manual Doc 12 7840 r03 3 28 16 i550 ...

Page 2: ...ing a mathematical model This model is merely a way to apply a limited set of data to a large range of experiences The i550 dive computer model is based upon the latest research and experi ments in decompression theory Still using this dive computer just as using any other No Decompression Tables is no guarantee of avoiding decompression sickness i e the bends Every diver s physiology is different...

Page 3: ...the person using it with data not the knowledge to use it Remember also that the dive computer does not actually measure and test the composition of your body tissue and blood Using an Aqua Lung dive computer just as using any other Decompression Tables is no guarantee of avoiding decompression sickness Every diver s physiology is different and can even vary from day to day No machine can predict ...

Page 4: ...ivation 24 3 UNITS IMP MET 25 4 dEEP STOP 25 5 SS SAFETY STOP 25 6 CF Conservative Factor 26 7 LIGHt BACKLIGHT DURATION 26 8 SR SAMPLE RATE 27 SET TIME 27 SET MODE 28 HISTORY 28 SN SERIAL NUMBER 29 DIVE OPERATION 30 INITIATING A DIVE 31 NO DECOMPRESSION DIVE MAIN 31 DIVE ALT 1 32 DIVE ALT 2 32 DEEP STOP PREVIEW 32 DEEP STOP MAIN 32 SAFETY STOP MAIN 33 SURFACING 33 GAS SWITCHES 34 OVERVIEW 34 DECOM...

Page 5: ...Doc 12 7840 r03 3 28 16 5 Aqua Lung International Inc 2016 TECHNICAL DATA 51 NO DECOMPRESSION TIME LIMITS 52 OXYGEN EXPOSURE LIMITS 53 ALTITUDE LEVELS 53 SPECIFICATIONS 54 ABBREVIATIONS TERMS 56 ...

Page 6: ...Doc 12 7840 r03 3 28 16 6 Aqua Lung International Inc 2016 GETTING STARTED ...

Page 7: ...ecome wet and you descend greater than 1 5 m 5 ft for 5 seconds The H2O ACT water activation feature may be dis abled if that is your preference Disabling the H2O ACT feature is described in the Dive Surface Mode chapter p 24 Upon activation the unit will enter a Diagnostic Mode The i550 checks the display and voltage at this time to ensure that everything is within tolerance It will also check am...

Page 8: ... Oxygen 3 Deep Stop 4 Safety Stop 5 Gas Time Remaining 6 Decompression Stop Triggered 7 Descend Ascend or Stop 8 Low Battery 9 Value is Maximum 10 Oxygen Saturation 11 Fraction of Oxygen 12 Time To Surface 13 Temperature 14 Dive Time or Dive 15 Surface Time 16 Gas 17 Value is Pressure 8 7 1 9 1 2 3 4 6 17 10 11 12 13 14 15 16 5 ...

Page 9: ...e also used to enter settings activate the backlight and acknowledge the audible alarm Throughout this manual they will be referred to as the ADV and SEL buttons Pressing different combinations of these buttons will navigate through different menus and options of the i550 The symbols in the table below will illustrate how to proceed through the menus SYMBOL MEANING PRESS BUTTON LESS THAN 2 SECONDS...

Page 10: ...gh menus to toggle or change setpoints to activate the backlight SEL ADV ADV to scroll quickly changing setpoints to scroll quickly through menu lead in screens selections SEL ADV SEL to select access step forward through selections or save a setting to activate the backlight during a dive SEL ADV SEL to activate the backlight on the surface SEL ADV to exit a menu directly to the main screen ADV S...

Page 11: ...Doc 12 7840 r03 3 28 16 11 Aqua Lung International Inc 2016 DIVE FEATURES ...

Page 12: ...as control shifts to slower compartments This is a feature of the decompression model that is the basis for multilevel diving one of the most important advantages that Aqua Lung dive computers offer O2 MIN OXYGEN TIME REMAINING When set for nitrox operation O2 SAT Oxygen Saturation during a dive is displayed on an ALT screen as a percentage of allowed saturation identified by the O2 SAT icon The l...

Page 13: ... CF is set to On the dive time remaining No Deco O2 MIN which are based on the algorithm and used for N2 O2 calculations and displays relating to Plan Mode will be reduced to the values available at the altitude level that is 915 m 3 000 ft higher than the actual altitude at activation Refer to the charts in the back of this manual for dive times DS DEEP STOP When the DS selection is set to ON it ...

Page 14: ... the SS depth set for 1 second on a No Decompression dive in which Depth exceeded 9 m 30 ft for 1 second a beep will sound and a SS at the depth set will appear on the Dive Main display with a countdown beginning at the SS time set and counting down to 0 min If the SS was set for OFF the display will not appear In the event that you descend 3 m 10 ft deeper than the Stop Depth for 10 seconds durin...

Page 15: ...he set point selected PO2 at the set point selected High O2 of 300 OTU 100 N2 Bar Graph at the set point selected Ascent rate exceeds 9 MPM 30 FPM for 8 seconds or more Entry into Decompression Mode Deco Conditional Violation above a required Decompression Stop Depth for less than 5 minutes Delayed Violation above a required Decompression Stop Depth for more than 5 minutes Delayed Violation a Deco...

Page 16: ...Doc 12 7840 r03 3 28 16 16 Aqua Lung International Inc 2016 DIVE SURFACE MODE ...

Page 17: ...roll quickly through the selections Some screens simply display data whereas the other screens are lead ins to sub menus and settings Press the SEL button to choose menus or options from the Main Menu when available All Main Menu screens and options will be discussed in the order they appear in the menu below MAIN MENU ALT 1 ALT 2 ALT 3 nitrox only FLY SAT PLAN LOG SET GAS SET AL SET UTIL SET TIME...

Page 18: ...n shall begin counting from 23 50 to 0 00 hr min 10 minutes after surfacing from a dive The SAT Desat counter shall provide calculated time for Tissue Desatuation at sea level taking into consideration the CF Conservative Factor if it was set on It shall begin counting down 10 minutes after surfacing from DIVE mode dives It will count down from a maximum of 23 to 10 hr only then 9 59 to 0 00 hr mi...

Page 19: ... log The log stores Information from the latest 24 DIVE and or GAUGE mode dives for viewing If no dives are recorded the message NONE YET 0 DIVE will be displayed in the log After exceeding 24 dives the most recent dive is stored while the oldest is deleted Dives are numbered from 1 to 24 starting each time a dive is activated in either Dive or Gauge mode After the post dive 24 hour period has ela...

Page 20: ...ding MOD Maximum Operating Depth and the cur rent PO2 Alarm setting for the selected gas Default settings are FO2 AIR with no PO2 alarm value for Gas 1 and OFF for Gas 2 and 3 Settings revert to the defaults when 24 hours elapse without conducting a dive If you set a nitrox mix value for any gas the PO2 alarm value will default to 1 40 until changed Additionally the i550 allows for each gas 1 3 to...

Page 21: ...2 Alarm setting blank if AIR flashing FO2 O2 setting flashing PO2 Alarm setting SET AL ALARMS Pressing the SEL button while viewing the Set AL Lead in screen accesses the Set AL Sub Menu Within this menu you can customize the following five alarm settings SEL ADV SET AL LEAD IN next item in Main Menu access Set AL menu 1 AUd AL Audible Alarms The Audible Alarm feature allows you to set audible ala...

Page 22: ...larm This feature allows you to set an alarm to go off at a predetermined amount of dive time SEL ADV SET EDT AL save setting to change setting setpoint 10 180 min or blank if OFF 4 N2 AL Nitrogen Alarm This feature allows you to set an alarm to go off at a predetermined number of N2 bar graph seg ments SEL ADV N2 AL save setting to change setting OFF or blank if ON OFF displayed or blank if ON of...

Page 23: ...ws you to set an alarm to go off at a designated turn pressure You may choose OFF or 70 to 205 BAR 1000 to 3000 PSI in increments of 5 BAR 250 PSI 7 PRESS AL Pressure Alarm This feature allows you to set an alarm for when you reach a designated end pressure You may choose from from 20 to 105 BAR 300 to 1500 PSI in increments of 5 BAR 100 PSI NOTE The Pressure Alarm only considers the gas 1 when di...

Page 24: ...L LEAD IN next item in Main Menu access Set UTIL menu 1 H2O TYPE Water Type The H2O Type feature allows you to set SALT or FRESH water environment for accurate depth calculations SEL ADV SET H2O TYPE save setting toggle setting or FRESH 2 H2O ACT Water Activation The H2O ACT feature allows you to turn OFF water contact activation WARNING With H2O ACT turned OFF you MUST remember to manually activa...

Page 25: ...he Deep Stop feature can be set ON or OFF SEL ADV SET DEEP STOP save setting toggle setting 5 SS SAFETY STOP The Safety Stop feature can be set ON or OFF If ON is selected you may choose from an avail able 3 or 5 min Safety Stop at depths of 3 4 5 or 6 m 10 15 or 20 ft SEL ADV SET SAFETY STOP save setting toggle setting ON or OFF ON or OFF SEL ADV SET STOP TIME save setting toggle setting 3 or 5 m...

Page 26: ...ctor The CF feature can be set ON or OFF SEL ADV SET CF save setting toggle setting ON or OFF 7 LIGHt BACKLIGHT DURATION This setting is the duration the backlight stays on after releasing the buttons The options are OFF 5 sec or 10 sec SEL ADV SET LIGHT save setting advance setting OFF 5 sec 10 sec ...

Page 27: ...er files for each dive Depending on the chosen set tings and dive durations it is possible to see dives stored in the i550 s onboard Log that have already been overwritten in the PC Download Partition Choosing a longer Sample Rate interval will consume less memory per dive Remember to download your dives more frequently if you are using a shorter Sample Rate interval SEL ADV SET SR save setting ad...

Page 28: ...will be locked in Gauge mode for 24 hours after surfacing from any Gauge or Violation Dive Otherwise you may switch modes freely while in either Surface Mode SEL ADV SET MODE LEAD IN next item in Main Menu access Set Mode SEL ADV SET MODE advance setpoint save setting Choose between diVE or GAUGE HISTORY History is a summary of basic data recorded during all diVE and GAUGE dives SEL ADV TOTAL DIVE...

Page 29: ...nal Inc 2016 SN SERIAL NUMBER Information displayed on the Serial Number screen should be recorded and kept with your sales receipt it will be required in the event that your i550 requires factory service SEL ADV SERIAL NUMBER return to Dive Surf Main revision serial ...

Page 30: ...Doc 12 7840 r03 3 28 16 30 Aqua Lung International Inc 2016 DIVE OPERATION ...

Page 31: ... indicate a safety recommendation warning or alarm The following information in this chapter demonstrates and describes an uneventful dive in terms of safety Alarms are described in the Complications section of this chapter WARNING Before diving with the i550 take time to familiarize yourself with both normal and alarm conditions of operation depth deep stop if triggered Dive Time Remaining 0 99 m...

Page 32: ...r maximum depth during the dive This preview screen keeps track of that depth for you Deep Stop depth stop time DEEP STOP MAIN If triggered the Deep Stop will activate upon ascending to within 3 m 10 ft below the calculated Deep Stop depth The stop time will be displayed and count down to 0 min as long as you stay within 3 m 10 ft above or be low the stop While Deep Stop Main is displayed you may ...

Page 33: ...Dive Features chapter for further details NOTE The i550 does not penalize for a missed Safety Stop remaining stop time stop depth SURFACING Upon ascending to 0 9 m 3 ft the i550 transitions to Dive Surface mode For the first 10 minutes after a dive the i550 will continue to display the maximum depth and elapsed dive time Once the surface time reaches 10 min utes the i550 will display the standard ...

Page 34: ...resent gross excursions into decompression that are beyond the boundaries and spirit of the i550 s design If you are following these dive profiles Aqua Lung advises that you should not use an i550 If you exceed certain limits the i550 will not be able to help you get safely back to the surface These situations exceed tested limits and can result in loss of some functions for 24 hours after the div...

Page 35: ...he i550 and force the gas switch by pressing the SELECT button during the DO NOT SWITCH TO message WARNING Switching to gases with a PO2 above 1 6 has a high risk of oxygen poisoning convulsions and drowning Doing so should always be avoided It is intended as a last resort option because of the likelihood of injury or drowning Always dive within your training experience and skill level current PO2...

Page 36: ...pth with slightly less credit given the deeper you are be low the Stop Depth indicated You should stay slightly deeper than the required Stop Depth indicated until the next shallower Stop Depth appears Then you can slowly ascend to but not shallower than that indicated Stop Depth COMPLICATIONS DECOMPRESSION ENTRY Upon entry into decompression the audible alarm will sound and the alarm LED will fla...

Page 37: ...gins required Decompression Stop Depths and Time will decrease toward zero The N2 Bar Graph will recede into the No Decompression zone and operation will revert to No Decompression mode down arrow flashing N2 Bar Graph flashing alternating with gas pressure DV 1 DELAYED VIOLATION 1 If you remain shallower than a Decompression Stop Depth for more than 5 minutes operation will enter DV1 which is a c...

Page 38: ...ge Mode 120 M 399 FT is the depth at which the i550 can properly per form calculations or provide accurate display information Upon ascending above the maximum functional depth current depth will be restored The Log for that dive will also display dashes for max depth flashing DV3 DIVE MAIN LOG DV3 DIVE VGM VIOLATION GAUGE MODE DURING A DIVE During Dive mode dives operation will enter VGM when Dec...

Page 39: ... before normal operation can resume with full features and func tions flashing VGM SURFACE 10 MIN flashing HIGH PO2 Warning at Alarm Set Point value minus 20 Alarm at Set Point value except in Decompression then at 1 60 only Warning When PO2 partial pressure of oxygen increases to the Warning level the audible alarm sounds and the PO2 value will flash in place of gas pressure until the audible ala...

Page 40: ...the UP message and the O2 SAT value will flash in place of DTR until surfacing flashing HIGH O2 SAT OXYGEN SATURATION Warning at 80 to 99 240 OTU Alarm at 100 300 OTU Warning When O2 reaches the Warning Level the audible alarm sounds and the O2 SAT saturation value will flash in place of the DTR The DTR will be restored when the audible alarm is silenced O2 SAT flashing Warning During Decompressio...

Page 41: ...s to the Dive ALTs al lowed If O2 SAT is 100 the value will alternate with SURF time on the Main Screen until it is 100 then it will be replaced with SURF time If you surface due to 100 O2 SAT without completing the Decompression obligation the full N2 Bar Graph and O2 SAT value 100 will flash with O2 SAT icons for the first 10 minutes then opera tion will enter VGM Violation Gauge Mode Access to ...

Page 42: ...Doc 12 7840 r03 3 28 16 42 Aqua Lung International Inc 2016 GAUGE MODE ...

Page 43: ... button When you reach the end of the menu the i550 will return to the Gauge Surface Main screen You may hold the ADV button to scroll quickly through the selections Some screens simply display data While other screens are lead ins to sub menus and settings Press the SEL button to choose menus or op tions from the Main Menu when available mode is GAUG Gauge surface interval hr min dive 0 for none ...

Page 44: ...commence upon descending to 1 5 m 5 ft for at least 5 seconds Be low is a diagram to help you navigate Gauge Dive Mode functions GAUGE DIVE MAIN The Gauge Dive Main provides basic information including depth dive time and ascent rate during the dive depth elapsed dive time 0 999 min ASC bar graph gas pressure ALT 1 back to Main SEL ADV activate backlight or acknowledge alarm ADV Gas Time Remaining...

Page 45: ... Mode 100 M 330 FT Gauge Mode 120 M 399 FT is the depth at which the i550 can properly per form calculations or provide accurate display information Refer to the Specifications in the back Upon ascending above the maximum functional depth current depth will be restored The Log for that dive will display dashes for max depth LOG DV3 GAUGE flashing NOTE The Gauge Mode operation is similar to Dive Mo...

Page 46: ...Doc 12 7840 r03 3 28 16 46 Aqua Lung International Inc 2016 REFERENCE ...

Page 47: ...i550 or upload settings to it review the HELP section of the inter face program It is recommended to print those sections of HELP that you consider appropriate for your interface activities CARE AND CLEANING Protect your i550 from shock excessive temperatures exposure to chemicals and tampering Protect the lens against scratches with an Instrument Lens Protector Small scratches will naturally disa...

Page 48: ...ironment with extreme care taken to prevent the entrance of moisture or dust To prevent formation of moisture in the battery compartment it is recom mended that the battery be changed in an environment equivalent to the local outdoor temperature and humidity e g do not change the battery in an air conditioned environment then take it outside during a hot sunny day Battery Cover Removal Turn the mo...

Page 49: ...eturn the unit to an authorized Aqua Lung dealer for a complete evaluation before attempting to use it ALTITUDE SENSING AND ADJUSTMENT Altitude i e ambient pressure is measured upon activation and every 15 minutes until a dive is made Measurements are only taken when the unit is dry Two readings are taken the second reading 5 seconds after the first The readings must be within 30 cm 1 ft of each o...

Page 50: ...he hose will release from the console Quick Disconnect Hose Assembly Visually inspect the fittings and connection O ring for damage corrosion or deterioration WARNING If damage corrosion or deterioration is found return your i550 to an authorized Aqua Lung dealer and DO NOT attempt to use it until it has received factory prescribed service Line up the Quick Disconnect Hose fitting with the male fi...

Page 51: ...Doc 12 7840 r03 3 28 16 51 Aqua Lung International Inc 2016 TECHNICAL DATA ...

Page 52: ...05 0 05 0 05 0 04 0 04 0 04 0 04 0 04 0 04 0 04 48 0 06 0 05 0 05 0 04 0 04 0 04 0 04 0 04 0 04 0 03 0 03 0 03 51 0 05 0 04 0 04 0 04 0 04 0 04 0 04 0 03 0 03 0 03 0 03 0 03 54 0 05 0 04 0 04 0 04 0 04 0 03 0 03 0 03 0 03 0 03 0 03 0 03 57 0 05 0 04 0 04 0 03 0 03 0 03 0 03 0 03 0 03 0 03 0 03 0 03 Altitude meters 40 1 49 1 21 1 15 1 11 1 08 1 05 1 02 1 00 0 57 0 55 0 53 0 51 50 1 05 0 53 0 51 0 4...

Page 53: ...to 7 000 EL4 2 136 to 2 745 7 001 to 9 000 EL5 2 746 to 3 355 9 001 to 11 000 EL6 3 356 to 3 965 11 001 to 13 000 EL7 3 965 13 000 OXYGEN EXPOSURE LIMITS from NOAA Diving Manual PO2 ATA MAX DURATION SINGLE EXPOSURE MIN MAX TOTAL DURATION 24 HOUR DAY MIN 0 60 720 720 0 70 570 570 0 80 450 450 0 90 360 360 1 00 300 300 1 10 240 270 1 20 210 240 1 30 180 210 1 40 150 180 1 50 120 180 1 60 45 150 ...

Page 54: ...0 m 14 000 ft elevation Measures ambient pressure every 30 minutes when inactive upon activation every 15 minutes while activated Does not measure ambient pressure when Wet Compensates for Altitudes above sea level beginning at 916 m 3 001 ft elevation and every 305 m 1 000 ft higher Power 1 3 v CR2450 Lithium battery Panasonic or equivalent Shelf life Up to 5 years dependent on battery manufactur...

Page 55: ... to 100 1 PO2 Value 0 00 to 5 00 ATA 0 01 ATA Dive Time Remaining 0 to 99 min display 99 if 99 min 1 minute Time To Surface 0 to 99 min display if 99 min 1 minute No Decompression Deep Stop Time 2 to 0 min 1 minute No Decompression Safety Stop Time 5 to 0 min 1 minute Decompression Stop Time 0 to 999 min 1 minute DIVE GAUGE Elapsed Dive Time 0 to 999 min 1 minute Surface Interval Time 0 00 to 23 5...

Page 56: ...aining H2O Water HIST History IMP Imperial measure LAST Previous dive M Meters depth M D D M Month Day Day Month MET Metric MFD Maximum Functional Depth equipment limits MIN Minutes time MOD Maximum Operating Depth N2 Nitrogen N2 Bar Graph Tissue Loading Bar Graph NDL No Decompression Limit NO DECO No Decompression DTR O2 Oxygen O2 MIN Oxygen Time Remaining DTR O2 SAT Oxygen Saturation PC Personal...

Page 57: ...www aqualung com ...

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