Cressi-sub S.p.A. Via Gelasio Adamoli, 501 - 16165 - Genova - Italia Tel. (0) 10/830.791 - Fax (0) 10/830.79.220 E.mail: info@cressi-sub.it WWW: http://www.cressi-sub.it Manuale d’istruzioni Manuel d’instructions Gebrauchsanweisung Manual de instrucciones User’s Manual Cressi-sub S.p.A. Via Gelasio Adamoli, 501 - 16165 - Genova - Italia Tel. (0) 10/830.791 - Fax (0) 10/830.79.220 E.mail: info@cressi-sub.it WWW: http://www.cressi-sub.
6-06-2008 User’s Manual 8:26 Pagina 159 ENGLISH Manuale ARCHIMEDE II 2008:Manuale 6
Manuale ARCHIMEDE II 2008:Manuale 6 26-06-2008 8:26 TABLE OF CONTENTS 1. - INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . pag. 161 1.1. - Main specifications . . . . . . . . . . . . . . . . . . . . . . . . . . pag. 161 1.2. - Safety measures . . . . . . . . . . . . . . . . . . . . . . . . . . . . pag. 161 1.2.1. - Definitions of danger, warning and note . . . . . . . . pag. 161 1.2.2. - General recommendations and safety measures . pag. 162 1.3. - Introduction . . . . . . . . . .
26-06-2008 8:26 Pagina 161 1. - INTRODUCTION. • • • • • • • Congratulations on your purchase of the Archimedes II computer. The Archimedes II is a sophisticated computer offering numerous performance features which ensures the utmost in performance, reliability and safety. 1.1. - Main specifications. • Algorithm. The Bühlmann ZH-L8 algorithm has been refined by Randy Bohrer in order to make available a more complicated RGBM program.
Manuale ARCHIMEDE II 2008:Manuale 6 26-06-2008 8:26 Pagina 162 1.2.2. - General recommendations and safety measures. NOT dive if the instruments’ indications are not clear and if the battery is low. WARNING: Read the directions! Please read users’ guide carefully, including the safety measures section.
26-06-2008 8:26 Pagina 163 DANGER: The use of nitrox should not be undertaken As a result of technological advancements/changes, Cressisub reserves the right to modify the Archimedes II computer without notification. without proper training. Nitrox dives will expose the diver to different risks than those of air dives, including serious physical damage and, in extreme cases, even death. 1.3. – Introduction.
Manuale ARCHIMEDE II 2008:Manuale 6 interface (accessory) and its related Logbook (accessory). 26-06-2008 8:26 Pagina 164 software Cressi PC Please note that it is very important to read and understand the users guide and the operation of the Archimedes II. Serious damages or death can result if theses guidelines are not clearly understood. Archimedes II Cressi-sub computer’s watch and calendar function (see picture 1) are always on, and the related battery consumption is unnoticeable.
Manuale ARCHIMEDE II 2008:Manuale 6 26-06-2008 8:26 Pagina 165 Foto Ghisotti ENGLISH 2) Before diving
Manuale ARCHIMEDE II 2008:Manuale 6 26-06-2008 8:26 Pagina 166 2.1. - UFDS display and controls. Archimedes II’s different programs are visible by repeatedly depressing button B (Mode). This is the key to operating the system. They are clearly indicated by the alpha-numeric UFDS display. Some programs have sub-menus, which are switched on by depressing buttons A and C. This will allow as well as change the setting on the surface. Depressing button C ( ) engages the display back-illumination. 2.2.
26-06-2008 8:26 Pagina 167 2.3.1. - DIVE program parameters setting. IIt is recommended that before diving at altitude, wait at least three hours after arriving at your diving destination. This will allow a partial release of the residual nitrogen from the body. The atmospheric pressure at higher altitudes is lower than at sea level. Therefore, the diver has additional nitrogen in his body than at the lower altitudes.
Manuale ARCHIMEDE II 2008:Manuale 6 26-06-2008 8:26 Pagina 168 • FO2 Mix 1 is the oxygen percentage of the primary Nitrox mixture (MIX1) set on Archimedes II. The diver may vary it on values between FO2=Air (21%) – basic setting - and FO2=50 % (included), by variations of 1% O2, obtained at each depression of button C ( ); be changed by the diver on values between 1.0 bar (included) and 1.6 bar (included), by increments of 0.
2.3.2 - Dive planning ( 26-06-2008 8:26 Pagina 169 ). UFDS display allows you to visualize, while on the surface, every set parameter for your dive in a quick and easy manner (picture 6), when the computer is set on program. By depressing button A ( ), the computer will display the set PO2 and the relating maximum depth MAX (given in m or ft.
Manuale ARCHIMEDE II 2008:Manuale 6 26-06-2008 8:26 Pagina 170 ched off, while it is possible to set only a maximum depth alarm which may be switched on or off by the user by setting the instrument, following the same procedures shown in chapter 2.5.1. WARNING: Archimedes II Cressi-sub computer has been developed for sport diving use only. It is not intended for commercial or professional use requiring longer dive times and greater depths.
Manuale ARCHIMEDE II 2008:Manuale 6 26-06-2008 8:26 Pagina 171 B (Mode) to go to the first menu of ( or ) program setting (picture 3). Then depress buttons A+C in sequence and keep them pressed together for about 5 seconds. An alarm and the new set unit of measure will appear on the display. By depressing button B (Mode) for several seconds, you will return to the normal display (picture 1). NOTE: When switched on (ON), the maximum depth alarm works in both and computing programs. Related topics: • 2.
Manuale ARCHIMEDE II 2008:Manuale 6 26-06-2008 8:26 Pagina 172 3) While diving Foto Ghisotti
3. - 26-06-2008 8:26 Pagina 173 program. 9 Icon of maximum depth alarm (if switched ON – see 2.5.1) 10 indicator of Nitrox mixture(s) dive 11 MIX1 or MIX2 icons identifies which Nitrox mixture is being considered by the computer to make its computations 12 ( ) and ( ) icons, that is “Info” (button A) and back-illumination (button C). Archimedes II computer offers two computing programs; for air ( program) and for nitrox mixtures or EAN (Enriched Air Nitrox) dives.
Manuale ARCHIMEDE II 2008:Manuale 6 26-06-2008 8:26 Pagina 174 3.2. - HYPER-OXYGENATED (NITROX) MIXTURES DIVE WARNING: Before diving, always check the oxygen percentage of the mixture(s) set on the computer. This is done on surface by depressing button A ( ) which allows visualization of the previously set parameters. 3.2.1. - Before a Nitrox dive.
26-06-2008 8:26 Pagina 175 the following order, the dive parameters relating to: where FO2 Mix 1 is the oxygen percentage of Nitrox primary mixture (MIX1), which can be set on values between 21% and 50%, by O2 variations of 1%. The second mixture’s FO2 (FO2 Mix2) can be set to values between 21% and 99%, by O2 variations of 1%. This is done by depressing and keeping button C ( ) depressed.
Manuale ARCHIMEDE II 2008:Manuale 6 26-06-2008 8:26 Pagina 176 It is important to comply with and understand the following: 3 Should the FO2 value be set and no dive carried out, the computer will store the set value in the memory until the current day’s midnight, when it will reset it on 99% (picture 12b) 1 At the end of a dive, the previously set mixture(s) oxygen percentage FO2 will be stored in the memory only during the first ten minutes of the surface interval.
26-06-2008 8:26 Pagina 177 DANGER: As a safety measure, in order to avoid the • 3.3.4. - CNS toxicity display. • 3.3.5. - PO2 alarms. involuntary setting of nitrox mixtures at depths where they might be toxic (excessive PO2), Archimedes II does not allow the mixture change if the new mixture’s PO2 is higher than the one set on the computer (1.4 bar = default value). The maximum PO2 alarm will sound if you attempt to set nitrox mixtures at depth. 3.3.4.
Manuale ARCHIMEDE II 2008:Manuale 6 26-06-2008 8:26 Pagina 178 cally signals the maximum depth which may be reached. Remember that even by using air, you may reach the oxygen toxicity limit. Such limit varies according to the set PO2. Archimedes II is manufactured with a preset value of 1.4 bar, whose corresponding maximum depth is 1834 ft. in air. It is possible to set the computer on other PO2 values, up to a maximum of 1.6 bar.
26-06-2008 8:26 Pagina 179 3.4.2. – Safety Stop ( shown on the display by a segmented indicator at the bottom on the right, which functions according to following table: Depth 0ft No segment 19.3ft 0.0 ft 12.8 f/min 19,7ft 58.7ft 0.0 ft 19.3 ft/min 59ft 5ft 0.0 m 25.9 ft/min 1 segment - 13.1 ft/min 19.3 ft/min - 19.7 ft/min 25.9 ft/min - 26.2 ft/min 36 ft/min 2 segments - 19.7 ft/min 25.9 ft/min - 26.2 ft/min 39 ft/min - 39.4 ft/min 52.
Manuale ARCHIMEDE II 2008:Manuale 6 26-06-2008 8:26 Pagina 180 decompression limits, therefore beginning a decompression requirement. Related topics: • 3.5. - Decompression dive. 3.5. – Decompression dive ( You should consider the amount of gas needed to successfully complete all decompression requirements. During rough sea conditions, it may be difficult to comply with the decompression stage requirements without exceeding them.
26-06-2008 8:26 Pagina 181 3.5.1. – Omitted Decompression stage alarm. useful for apnea (free diving) divers as well as for technical dives with helium-based binary and ternary mixtures. Please be advised that Archimedes II in program mode does compute any saturation and de-saturation computations. It functions only as a basic instrument offering depth and time functions. During a dive conducted using the Gage mode, proper decompression software must be utilized according to proper dive tables.
Manuale ARCHIMEDE II 2008:Manuale 6 26-06-2008 8:26 2 dive time, shown by the “DIVE T" icon, given by the timer in minutes and seconds. 3 maximum depth reached during the dive given in meters (m) or feet (ft.), shown by the “MAX” icon. 4 segmented ascent rate indicator 5 icon of maximum depth alarm (if ON – please see 2.5.
Manuale ARCHIMEDE II 2008:Manuale 6 26-06-2008 8:26 Pagina 183 Foto Ghisotti ENGLISH 4) On surface after a dive
Manuale ARCHIMEDE II 2008:Manuale 6 26-06-2008 8:26 Pagina 184 4.1. – Data processing. NOTE: Should a dive begin with less than 10 minutes of surface interval time, Archimedes II will consider this a continuation of the previous dive; the dive’s count and dive time computation will restart from where they had stopped. This chapter deals with all the “on surface” functions, including data processing after a dive, both in and in programs.
4.1.2. – Logbook ( 26-06-2008 8:26 Pagina 185 ). classified a no decompression dive. Should it enter the “red” zone, it is classified a decompression dive. Archimedes II computer memorizes data relating to the last 30 hours’ dives (or to the last 60 dives) both in and programs. The data is entered every 30 seconds into the Logbook (dive journal). This may be activated on the surface by repeatedly depressing button B (Mode), until the (LOG) icon appears on the UFDS display (picture 27).
Manuale ARCHIMEDE II 2008:Manuale 6 26-06-2008 8:26 Pagina 186 on the UFDS display.
4.1.4. – Dive profile ( 26-06-2008 8:26 Pagina 187 ). 4.1.5. – Data PC transfer: compatible PC interface. The dives’ detailed profile carried out in both and programs and stored in the logbook’s memory, is entered by repeatedly depressing button B (Mode), until the ( ) icon appears on the UFDS display (picture 32).
Manuale ARCHIMEDE II 2008:Manuale 6 26-06-2008 8:26 Pagina 188 4.1.6. – Instrument reset. Related topics: The instrument may be completely reset, by depressing the small button on the back of the instrument, shown as "RESET" (picture 34). This will result in information relating to nitrogen absorption and time/date to be cancelled. • • • • • • 2.3.1. 2.5.2. 4.1.1. 4.1.2. 4.1.3. 4.1.4. program parameters setting. - Date and hour adjustment. - Surface interval. - Logbook. - Dive historic memory.
Manuale ARCHIMEDE II 2008:Manuale 6 26-06-2008 8:26 Pagina 189 surface interval in order to simulate a subsequent dive. As noted in the previous chapter, the simulator program is entered by repeatedly depressing button B (Mode), until the ( ) icon appears on the UFDS display (picture 35).
Manuale ARCHIMEDE II 2008:Manuale 6 26-06-2008 8:26 Pagina 190 WARNING: Always wash the instrument in fresh water after using. The buttons do not need any particular care; never grease them with oil or spray of any kind. ting to de-saturation computing would be cancelled. In this case, please check the amount of de-saturation hours and do not dive after battery replacement during a corresponding amount of hours.
Manuale ARCHIMEDE II 2008:Manuale 6 26-06-2008 8:26 Pagina 191 6. – TECHNICAL SPECIFICATIONS. Algorithm: Bühlmann ZH-L8 Standard fabrics: 12 Hemi-saturation time: from 5 to 640 minutes Dimensions and weight: Diameter: 62 mm - Height: 24 mm Weight: 115 g Depth sensor:: - Sea water setting (fresh water depths are about 3% lower) - Measuring field: 0-325 ft., measured every second - GAGE function measuring field: 0-656 ft. - Precision: +/- 1% (T 20°C – 68 F) - Reading resolution: 0-328 ft.
Manuale ARCHIMEDE II 2008:Manuale 6 26-06-2008 8:26 Pagina 192 6.1.1. – No decompression tables by the first dive in a series. NOTE: Different factors affect the battery average life. For example: the time of storage before acquiring the instrument, the dive time, the use of back-illumination, the battery’s quality itself, whose average life varies according to temperature. Depth (m) Depth (ft) AIR EAN1 (32%) EAN2 (36%) (PO2=1.4bar) (PO2=1.4bar) 6.1.
Manuale ARCHIMEDE II 2008:Manuale 6 26-06-2008 8:26 Pagina 193 7. – WARRANTY. The Cressi-sub Archimedes II computer is warranted for manufacturing materials and defects for a period of two years from the purchase date. The warranty DOES NOT include damages caused by improper use, by inattentive maintenance or modifications/repairs carried out by unauthorized personnel and is automatically suspended when the correct maintenance procedures described by the present users’ guide are not followed.
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Cressi-sub S.p.A. Via Gelasio Adamoli, 501 - 16165 - Genova - Italia Tel. (0) 10/830.791 - Fax (0) 10/830.79.220 E.mail: info@cressi-sub.it WWW: http://www.cressi-sub.it Manuale d’istruzioni Manuel d’instructions Gebrauchsanweisung Manual de instrucciones User’s Manual Cressi-sub S.p.A. Via Gelasio Adamoli, 501 - 16165 - Genova - Italia Tel. (0) 10/830.791 - Fax (0) 10/830.79.220 E.mail: info@cressi-sub.it WWW: http://www.cressi-sub.
