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Aqua Lung i550C, Owner'S Manual

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Aqua Lung i550C Owner'S Manual Download Page 1

© Aqua Lung International, Inc. (2018)

Dive Computer Owner's Manual

Doc. 12-7909-r04  (10/31/18)

i550C

(P/N's  NS117121 - NS117126)

Summary of Contents for i550C

Page 1: ...Aqua Lung International Inc 2018 Dive Computer Owner s Manual Doc 12 7909 r04 10 31 18 i550C P N s NS117121 NS117126...

Page 2: ...e range of experiences The i550C dive computer model is based upon the latest research and experiments in decompression theory Still using this dive computer just as using any other No Decompression T...

Page 3: ...a unique piece of information It is imperative that you understand the formats ranges and values of the information represented to avoid any possible misunderstanding that could result in error Rememb...

Page 4: ...h gases containing more than 22 oxygen and must not be used for air Depth and time measurements are in conformity with EN13319 2000 Diving Accessories depth gauges and combined depth and time measurin...

Page 5: ...OP 27 6 CF Conservative Factor 27 7 bLUETOOtH Bluetooth Communication 28 8 LIGHt BACKLIGHT DURATION 28 9 SR SAMPLE RATE 29 SET TIME 29 SET MODE 30 HISTORY 30 SN SERIAL NUMBER 31 DIVE OPERATION 32 INIT...

Page 6: ...Doc 12 7909 r04 10 31 18 6 Aqua Lung International Inc 2018 ALTITUDE LEVELS 55 SPECIFICATIONS 56 ABBREVIATIONS TERMS 58 AQUA LUNG DISTRIBUTORS 58...

Page 7: ...Doc 12 7909 r04 10 31 18 7 Aqua Lung International Inc 2018 GETTING STARTED...

Page 8: ...ed if that is your preference Disabling the H2O ACT feature is described in the Dive Surface Mode chapter p 26 Upon activation the unit will enter a Diagnostic Mode The i550C checks the display and vo...

Page 9: ...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 T...

Page 10: ...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 the...

Page 11: ...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...

Page 12: ...Doc 12 7909 r04 10 31 18 12 Aqua Lung International Inc 2018 DIVE FEATURES...

Page 13: ...s 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...

Page 14: ...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 t...

Page 15: ...5 ft deeper than 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 displa...

Page 16: ...e 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 De...

Page 17: ...Doc 12 7909 r04 10 31 18 17 Aqua Lung International Inc 2018 DIVE SURFACE MODE...

Page 18: ...ckly 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 av...

Page 19: ...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...

Page 20: ...4 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 perio...

Page 21: ...sses the Set Air EAN Enriched Air Nitrox screen Within this screen you can select whether to use Air or Nitrox gas mixes If Air is selected the i550C will return you to the Set Gas Lead in screen in t...

Page 22: ...flashing FO2 O2 setting Gas SET GAS 1 FO2 adjust FO2 setting save setting SET GAS 1 PO2 ALARM current PO2 Alarm setting SEL ADV MOD FO2 O2 setting Gas adjust PO2 setting save setting flashing PO2 Ala...

Page 23: ...e 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 alarms ON or OFF SEL AD...

Page 24: ...llows 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 segments selecte...

Page 25: ...y 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 diving with multiple gases SEL ADV TURN AL save setting to change...

Page 26: ...g 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 activate the i550C before any di...

Page 27: ...FF 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 S...

Page 28: ...TE When Bluetooth is ON the Bluetooth icon will be displayed when on the surface with the screen activated Bluetooth is temporarily deactivated when the i550C enters Sleep Mode screen is turned off or...

Page 29: ...settings and dive durations it is possible to see dives stored in the i550C s onboard Log that have already been overwritten in the Download Partition Choosing a longer Sample Rate inter val will con...

Page 30: ...ill be locked in Gauge mode for 24 hours after surfacing from any Gauge or Viola tion Dive Otherwise you may switch modes freely while in either Surface Mode SEL ADV SET MODE LEAD IN next item in Main...

Page 31: ...al Inc 2018 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 i550C requires factory ser...

Page 32: ...Doc 12 7909 r04 10 31 18 32 Aqua Lung International Inc 2018 DIVE OPERATION...

Page 33: ...s to 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 Complicati...

Page 34: ...aximum 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...

Page 35: ...Dive Features chapter for further details NOTE The i550C does not penalize for a missed Safety Stop remaining stop time stop depth SURFACING Upon ascending to 0 9 m 3 ft the i550C transitions to Dive...

Page 36: ...esent gross excursions into decompression that are beyond the boundaries and spirit of the i550C s design If you are following these dive profiles Aqua Lung advises that you should not use an i550C If...

Page 37: ...e i550C 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 d...

Page 38: ...epth 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 appea...

Page 39: ...ins 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 flas...

Page 40: ...Mode 120 M 399 FT is the depth at which the i550C can properly per form calculations or provide accurate display information Upon ascending above the maximum functional depth current depth will be res...

Page 41: ...peration will also enter VGM 5 minutes after surfacing from a dive in which a Delayed Violation occurred A full 24 hour continuous surface interval must then be served before all functions are restore...

Page 42: ...restored when the audible alarm is silenced O2 SAT flashing Warning During Decompression When O2 SAT reaches the Warning Level the audible alarm sounds and the O2 SAT value will tem porarily flash in...

Page 43: ...t 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...

Page 44: ...Doc 12 7909 r04 10 31 18 44 Aqua Lung International Inc 2018 GAUGE MODE...

Page 45: ...button When you reach the end of the menu the i550C 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...

Page 46: ...commence upon descending to 1 5 m 5 ft for at least 5 seconds Below is a diagram to help you navigate Gauge Dive Mode functions GAUGE DIVE MAIN The Gauge Dive Main provides basic information including...

Page 47: ...ode 100 M 330 FT Gauge Mode 120 M 399 FT is the depth at which the i550C can properly per form calculations or provide accurate display information Refer to the Specifications in the back Upon ascendi...

Page 48: ...Doc 12 7909 r04 10 31 18 48 Aqua Lung International Inc 2018 REFERENCE...

Page 49: ...ons To dissolve salt crystals use lukewarm water or a slightly acidic bath 50 white vinegar 50 fresh water After removal from the bath place the i550C under gently running fresh water Towel dry before...

Page 50: ...d 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 module over to expose the battery cover Unscrew th...

Page 51: ...turn 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 ever...

Page 52: ...e hose will release from the con sole Quick Disconnect Hose Assembly Visually inspect the fittings and connection O ring for damage corrosion or deterioration WARNING If damage corrosion or deteriorat...

Page 53: ...Doc 12 7909 r04 10 31 18 53 Aqua Lung International Inc 2018 TECHNICAL DATA...

Page 54: ...5 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...

Page 55: ...o 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 SI...

Page 56: ...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 ab...

Page 57: ...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 Decompressi...

Page 58: ...easure 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 Tiss...

Page 59: ...www aqualung com...

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