User manual 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. [. . . ] Due to the formation of microbubbles decompression can increase massively if a decompression stop is ignored. When the surface is reached during the decompression alarm, the arrow DECOSTOP , the decompression stop duration and decompression stop depth continue flashing, in order to point to the risk of a decompression accident. The SOS mode is activated 3 minutes after the dive if corrective action is not taken (->11). If the total (cumulative) duration of the decompression alarm is longer than a minute, it is entered in the logbook. Descend to the prescribed decompression stop depth immediately! WARNING CNS O2% DECO STOP Ignored decompression alarm Total time of ascent As soon as decompression stops are necessary TEC shows the total time of ascent. 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 <­ ­>. 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. It can be restarted any number of times. 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. Activate the safety stop timer by pressing . 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. The delay allows for surfacing for a short period for orientation. 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 After the dive has been closed desaturation time in hours and 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>. [. . . ] Fasten the transmitter cap with the 3 screws. Mount the transmitter on the HP outlet of the first stage of the regulator and check transmission and pairing. If you do not receive valid tank pressure data, transmitter and dive computer must be paired again. 3 Conversion of tank pressure Tank pressure indicated may differ from the information given by a manometer/pressure gauge. TEC displays pressure always converted to a temperature of 20°C / 68°F, whereas the mechanical pressure gauge displays the current pressure influenced by temperature. [. . . ]