NEMO AIR User’s Guide Dive computer
Nemo Air Dive computer • TABLE OF CONTENTS Quick guide NEMO AIR DIVE COMPUTER IMPORTANT WARNINGS RESPONSIBLE DIVING PRACTICES HOW THE NEMO AIR DIVE COMPUTER WORKS HOW THE BUTTONS WORK CHECK THE BATTERY POWER LEVEL AUTOMATIC SWITCH-OFF SETTING PARAMETERS FOR THE NEMO AIR DIVE COMPUTER MODE: AIR WATER (water selection) ALT (altitude) PFACTOR (personal correction factor) MODE: EAN MODE:BOTTOM TIME SET TANK SET ALARM SET WATCH (setting the watch) 2 3 3 4 4 4 4 5 5 5 5 5 5 5 6 6 7 7 DIVING WITH NEMO AIR DIVE
• NEMO AIR DIVE COMPUTER Congratulations! Your new Nemo Air dive computer is the result of the latest Mares technology, and has been designed to guarantee maximum safety, efficiency, reliability and long life. Simple and easy to use, it is ideal for all types of dives. This manual contains all the instructions for its use. Mares thanks you for your choice and urges you to always practice safe and responsible diving.
Nemo Air Dive computer WARNING Before diving, make sure you have correctly set the units of measurement. An incorrect setting may give rise to confusion during the dive, and hence to underwater behavior errors. WARNING Do not dive in mountain lakes without having first checked that the appropriate altitude program is selected.
Use the <+> and <-> buttons to select the type of water in which you will be diving. Press the button to record your setting and move on to set the altitude. WARNING If the charge level reaches the minimum value (LO2), you can only scroll through the SYSTEM menu. If the battery check is repeated and the battery status has changed, Nemo Air will become operative again.
Nemo Air Dive computer Use the <+> and <-> buttons to set the selected personal safety program. Press the button to record the new setting and return to the SETDIVE menu. Press the button> to record the new setting and move on to subsequent settings, reviewed in the previous AIR section, which are: MODE: EAN • • • This section addresses dives with oxygen-rich mixtures. We recommend that you carefully read the MODE: AIR section before proceeding further.
FIG. 15-1 FIG. 13 Note The alarm that indicates a DEEPSTOP when applicable is always activated. If the tank pressure drops below the value set during the dive, a constant audible alarm will sound, the word DANGER will appear on the screen (figure 14), and the tank pressure value will flash. The alarms can be switched off by pressing any button. When the tank pressure drops below 30 bar (450 psi) the alarms will be switched on again. The alarms can be switched off again by pressing any button.
Nemo Air Dive computer Normalization removes the effect of variations in depth, so that the data displayed gives a direct indication of the diver’s actual breathing rate. With reference to the above example, the instrument would display a breathing rate of 15 liters/min at every depth. FIG. 16 Use the <+> or <-> buttons to adjust the values. Press and release the button to change the value by one unit at a time, or hold down the buttons to scroll.
WARNING When the <+> or <-> buttons are pressed during the dive, Nemo Air will temporarily display the estimated DEEPSTOP required. The data displayed during the ascent may vary as a result of the diver’s behavior. Divers should check this data during the ascent for more precise information on the estimated stop.
Nemo Air Dive computer the ascent rate returns below the maximum allowable speed. At the same time as the audible alarm is triggered, the computer begins monitoring an “Uncontrolled Ascent.” An ascent is considered “uncontrolled” when the diver exceeds the maximum rate for a stretch equal to at least two thirds of the depth at which the audible alarm was triggered. This criterion only applies to alarms triggered below a depth of 12 m (39 ft).
WARNING The user is advised to carefully read the section on compressed air diving before reading the section on EAN dives. DIVE – EAN: CHECKING THE GENERAL DIVE PARAMETERS DIVE – EAN: “NO-DECOMPRESSION” DIVE When the diver descends below 1.2 meters (4 ft) Nemo Air automatically switches to DIVE mode and starts displaying the dive data. If this mode persists for more than 20 seconds, Nemo Air will begin recording the dive details in the LOGBOOK memory. The data displayed are shown in figures 30 and 31.
Nemo Air Dive computer Note After a dive in BOTTOM TIME mode, switching to AIR and EAN mode is suppressed for 24 hours. (This lockout can be disabled by clearing the residual nitrogen memory in SET DIVE - DATA mode.) WARNING Users who clear the residual nitrogen memory cannot then use the instrument for repetitive dives. After this operation, do not dive with Nemo Air if you have already dived within the previous 24 hours. FIG.
WARNING Before diving, make sure you have correctly set the units of measurement. An incorrect setting may give rise to confusion during the dive, and hence to underwater behavior errors. FIG. 41 Use the <+> and <-> buttons to change your selection. To clear the residual nitrogen memory in the tissue compartments press the button when the word “yes” appears.
Nemo Air Dive computer the most recent dive, “2” to the preceding dive, and so forth, until the memory is full. If the memory is full, when the user dives again the oldest record is deleted to free up memory for the new dive. Maximum capacity of approximately 40 hours of diving with profile points at 20-second intervals. To enter LOGBOOK mode, select the corresponding choice in the main menu and press the button. FIG.
FAQ Q: What happens if I replace the battery after a dive before the desaturation time has gone to zero? A: The residual nitrogen memory will be cleared, and the RGBM calculations for any previous dives aborted. The diver who used the computer in the previous dive must not dive for at least 24 hours. Q: What happens if I start a dive while Nemo Air is still in SYSTEM mode? A: If left in SYSTEM mode when you begin the dive, Nemo Air will still activate DIVE mode within 20 seconds of descending past 1.
Nemo Air Dive computer Do not use tools to tighten the Nemo Air connection. WARNING Under no circumstances replace the hose fitted on the computer with one of a different type; consult your dealer or Mares for information about the type of hose to be used. WARNING FIG. 54 WARNING Before closing the cover, check that the gasket is positioned correctly in its seat. Make sure it is perfectly clean, and lubricate it with a thin film of silicone grease.
gauge in the Nemo Air dive computer under standards EN 250:2000 and EN 13949: 2003 are understood to be applicable to a maximum depth of 50 m below the surface. The Nemo Air dive computer can be used in cold water (water at temperatures below 10°C). MARKING The instrument markings are located on the back of the case, and consist of the following: • working pressure rating: 300 bar / 4,350 psi; • reference standard: EN 250/2000; • reference marking: CE 0426.
cod. 44200717 - 04/08 - ArtBooK 3672/08 Algorithm Deep Stop Mares S.p.A. - Salita Bonsen, 4 - 16035 RAPALLO - ITALY - Tel. +39 01852011 - Fax +39 0185669984 www.mares.
