User manual SCUBAPRO-UWATEC SMART TEC

[. . . ] Smart TEC ® SWISS MADE BY UWATEC AG English Operating Manual Safety considerations You must carefully read and understand this entire manual before using your Smart TEC. Even if you follow the instructions of this manual in a careful manner, it is still possible that you may be seriously injured or die from decompression sickness, oxygen toxicity or some other inherent risk of scuba with Nitrox or compressed air. Unless you are fully aware of these risks and are willing to personally accept and assume responsibility for those risks, do not use Smart TEC! WARNING Guidelines for the use of Smart TEC: The following guidelines for using Smart TEC are derived from the latest medical research and the recommendations of the American Academy of Underwater Sciences for diving with diving computers. Following these guidelines will greatly increase your safety while diving, but cannot guarantee that decompression sickness or oxygen toxicity will not occur. [. . . ] This includes the ascent time from the current depth to the surface and all decompression stop obligations. The total time of ascent is calculated on the basis of the prescribed ascent rate and a normal workload. Total time of ascent can be subject to change if the ascent rate is not ideal (100%) or if TEC detects a higher workload. Ascent time greater than 199 minutes is displayed as <­ ­>. CNS O2% DECO STOP Ignored decompression alarm Total time of ascent DECO STOP % Total time of ascent WARNING On all dives with TEC, make a safety stop for at least three minutes at a depth of 5 m (15 feet). 4. 12 Safety stop timer The safety stop timer displays the time span a diver should spend at the safety stop depth at the end of the dive. The timer is activated by the diver and counts back to zero, starting with the time that was pre-set with SmartTRAK. Range: 1 - 5 minutes (default 3 min. ) CNS O2% The safety stop timer can be activated under the following conditions: Depth < 6. 5 m (21 ft), no-stop display 199 min. , gauge mode is switched off. The timer begins to count backwards and a bookmark will be created in the dive profile. The safety stop timer will switch off automatically if the depth exceeds 6. 5 m (21 ft) or the no-stop phase is shorter than 199 minutes. STOP % safety stop icon remaining time span minutes seconds III UWATEC® Smart dive computers 23 English 5 Functions at the surface 5. 1 End of a dive After reaching the surface (<0. 8 m/3 ft) TEC remains in dive mode for 5 minutes. After 5 minutes the dive is closed and it is entered into the logbook. % WARNING For the calculations of the desaturation and no-fly time it is assumed that the diver breathes air while on the surface. 5. 2 Desaturation time NO CNS O2% % Oxygen toxicity Desaturation time 5. 3 No-fly time No-fly time Do not fly icon NO DESAT , desaturation time in hours and After the dive has been closed minutes and, if available, oxygen toxicity is displayed. Desaturation time is determined either by oxygen toxicity, nitrogen saturation or the regression of microbubbles, depending on which requires the longer time. Oxygen toxicity (<CNS O2>) is displayed and adjusted until the value becomes 0%. Desaturation time is indicated until the next dive or until it reaches zero. The display is switched off to save energy three minutes after the last manipulation is made. The calculations are nevertheless continued in the background. The <no-fly time> is indicated beside the icon <do not fly>. <No-fly time> is the time in hours that should pass before a flight and is displayed and adjusted until the value becomes 0 hours. CNS O2% WARNING % Flying while TEC displays <do not fly> may lead to serious injury or death from decompression sickness. 5. 4 Microbubble warning Through repetitive dives microbubbles accumulate in the lungs if the surface interval is not long enough. Ignoring decompression stops or ascending at an excessive rate can also lead to microbubbles in tissues. In order to reduce the risk of decompression sickness for repetitive dives, the surface interval should be planned long enough. If TEC calculates that the formation of microbubbles occurs during the surface interval, it will advise a diver to extend the surface interval via the microbubble warning. The duration of the microbubble warMicrobubble ning is visible by entering the dive planner -> 37. warning NO CNS O2% NO Desaturation time WARNING If the <microbubble warning (NO DIVE)> is visible during the surface interval, the diver should not undertake another dive. If the dive is made in spite of the microbubble warning, the diver must cope with a clearly shorter no-stop time or an extension of decompression. Also, the duration of the microbubble warning at the end of the dive can increase considerably. 24 III UWATEC® Smart dive computers 6 Diving in mountain lakes 6. 1 Altitude ranges III % Altitude range 1 Desaturation time Adaptation time Altitude ranges TEC measures the atmospheric pressure every 60 seconds even while the display is switched off. If the computer detects a sufficient increase in altitude, it switches on automatically and indicates the new altitude range (1-4) and the desaturation time. [. . . ] Now insert the new battery, with "+" pointing upwards, into the battery compartment. After battery replacement the transmitter will perform an automatic test and switch into ready mode after 60 seconds. IX UWATEC® Smart dive computers 41 English IX Appendix WARNING 10. Check the proper position of the guide slots on the electronic support and in the transmitter cap. Slide the transmitter cap carefully back into its proper position. Mount the transmitter on the HP outlet of the first stage of the regulator and check transmission and pairing. [. . . ]