User manual SCUBAPRO-UWATEC ALADIN PRO NITROX

[. . . ] THE SYSTEM OPERATING MANUAL depth dive time Feet O2 % MIX NO STOP max. depth deco info ® American ® SWISS MADE BY UWATEC AG Safety considerations You must carefully read this entire manual before using your Aladin® Pro Nitrox. Even if you follow the instructions of this manual in a careful fashion, it is still possible that you may be seriously injured or die from decompression sickness, oxygen toxicity or some other inherent risk of scuba nitrox. Unless you are fully aware of these risks and are willing to personally accept and assume responsibility for those risks, do not use the Aladin® Pro Nitrox! WARNING The Aladin® Pro Nitrox is a decompression tool to assist a trained and certified diver in making decisions concerning dive planning and execution. [. . . ] Functions during the Dive 4. 3 Maximum depth Maximum depth is displayed if it is lower than the current depth (maximum indicator function). To prevent the display changing very frequently when diving in the vicinity of maximum depth, it is only displayed if it exceeds the current depth by more than three feet. depth dive time The portion of oxygen is displayed instead of maximum depth until a first maximum depth is reached (but at least for 5 minutes). III CNS O2 LIMIT % NO STOP max. depth deco info III Diving with Aladin® Pro Nitrox 43 4. Functions during the Dive 4. 4 Ascent rate depth dive time S L O W % SPEED NO STOP Optimal ascent rate varies depending on depth between 23 and 67 ft/min. If the ascent rate is greater than 100% of the set value, the black arrow <SLOW> appears. The Aladin® Pro Nitrox provides an acoustic alarm if the ascent rate is 110% or greater of the set value. The intensity of the alarm increases in direct proportion to the degree the prescribed ascent rate is exceeded. max. depth deco info WARNING The prescribed ascent rate must be observed at all times!Exceeding the prescribed ascent rate can lead to microbubbles in the arterial circulation which can lead to serious injury or death due to decompression sickness. · The Aladin® Pro Nitrox may require a decompression stop even within the nostop phase because of the danger of the formation of microbubbles due to an improper ascent. · Decompression time necessary for the prevention of microbubbles can increase massively if the ascent rate is exceeded. · At great depth, too slow an ascent may cause heightened saturation of tissues and an extension of both decompression time and total ascent time. At shallow depth, a slow ascent may shorten decompression time because the tissues are desaturating during a shallow, slow ascent. · Display of the ascent rate has the priority to <CNS O2LIMIT>). 44 III Diving with Aladin® Pro Nitrox 4. Functions during the Dive Messages: WARNING Ascent rate Optical alarm S L O W Acoustic alarm III % SPEED % SPEED S L O W % SPEED S L O W % SPEED S L O W Excessive ascent rates of longer periods are entered in the logbook. Response: Reduce ascent rate III Diving with Aladin® Pro Nitrox 45 4. Functions during the Dive 4. 5 Partial pressure of oxygen The tolerable partial pressure of oxygen can be set by means of an interface cable and the DataTalk-software between 1. 2 and 1. 95 bar (see page 84). The set value or the information about the actual ppO2 are not displayed. 4 sec depth dive time Messages: O2 % MIX DECOSTOP NO STOP Depending on the mixture used and the setting of the ppO2 the limit for an attention message is reached at different depths. The Aladin® Pro Nitrox sends an acoustic attention message when the set partial pressure is reached; the indication of depth starts flashing. Go to a smaller depth in order to diminish the danger of oxygen intoxication. max. depth deco info Response: WARNING The allowed maximum depth should not be exceeded or only for a short period. [. . . ] To avoid possible problems with your Aladin® Pro Nitrox, the following recommendations will help assure that it will give you years of trouble free service: ­ Avoid dropping or jarring your Aladin® Pro Nitrox. ­ Do not allow your Aladin® Pro Nitrox to be exposed to direct, intense sunlight. ­ Rinse your Aladin® Pro Nitrox thoroughly with fresh water after each dive. ­ Do not store your Aladin® Pro Nitrox in an gas mixture-tight area; make sure there is free ventilation. [. . . ]