Aqua Lung i450T, Owner'S Manual

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Doc. 12-7834-r04 (2/16/16)
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© Aqua Lung International, Inc. (2015)
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WARNINGS:
• The i450T is intended for use by recreational divers who have successfully completed a nationally
recognized course in scuba diving, and diving with enriched nitrogen-oxygen (nitrox) breathing gas
mixtures.
• It is intended only for no decompression diving, NOT intentional decompression diving.
• It must not be used by untrained persons who may not have knowledge of the potential risks and
hazards of scuba diving, and diving with enriched nitrogen-oxygen (nitrox) mixtures.
• You must obtain scuba certification, and certification in diving with enriched nitrogen-oxygen
mixtures (nitrox) before using the i450T for nitrox diving.
• It is NOT for use by military and commercial divers.
• It should NOT be utilized for any competitive, or repetitive square wave or decompression diving, as
it is intended solely for recreational use and no decompression multilevel diving.
• As with all underwater life support equipment, improper use or misuse of this product can cause
serious injury or death.
• Never participate in sharing or swapping of a dive computer.
• Conduct your dives in such a manner so as to insure that you continuously check the computer's
proper function.
• Read and understand this owner’s manual completely before diving with the i450T.
• If you do not fully understand how to use this dive computer, or if you have any questions, you
should seek instruction in its use from your authorized Aqua Lung dealer before you utilize this
product.
• If your i450T stops working for any reason while operating, it is important that you have anticipated
this possibility and are prepared for it. This is an important reason for not pushing the tables, oxygen
exposure limits, and a critical reason to avoid entering decompression, without proper training. If
you dive in situations where your trip would be ruined or your safety would be jeopardized by losing
the use of your i450T, a backup instrument system is highly recommended.
• Each numeric and graphic display represents 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.
• Remember that technology is no substitute for common sense, and a dive computer only provides
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 the U.S. Navy (or 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 how your body will react to a particular dive profile.
• Diving at high altitude requires special knowledge of the variations imposed upon divers, their
activities, and their equipment by the decrease in atmospheric pressures. Aqua Lung recommends
completion of a specialized altitude training course by a recognized training agency prior to diving in
high altitude lakes or rivers.
• Repetitive dives in a series should only be conducted at the same altitude as that of the first dive of
that series. Repetitive dives made at a different altitude will result in an error equal to the difference in
barometric pressure, and possibly a false dive mode with erroneous data.
• If the i450T is activated at an elevation higher than 14,000 feet (4,270 meters), it will immediately
shutdown.
• Decompression diving, or diving deeper than 130 ft (39 m), will greatly increase your risk of
decompression sickness.
• Using an i450T is no guarantee of avoiding decompression sickness.
• The i450T enters Violation Mode when a situation exceeds its capacity to predict an ascent
procedure. These dives represent gross excursions into decompression that are beyond the
boundaries and spirit of the i450T's design. If you are following these dive profiles, Aqua Lung
advises that you should not use an i450T.
• If you exceed certain limits, the i450T 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
dive in which a violation occurred.