Safety Considerations; Partial Pressure Of Oxygen - Uwatec SMART TEC Operating Manual

Safety considerations

You must carefully read and understand this entire manual before using your 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.
• Smart TEC is designed for dives with Nitrox (to a max.100% O
not use Smart TEC for dives made with other mixed gases.
• It is absolutely necessary to check the set mixture before each dive and to compare it to the gas mix-
ture currently used. Always remember: setting an incorrect mixture carries an inherent risk of decom-
pression sickness and/or oxygen toxicity! Maximum deviation from the measured mixture must not
exceed 1% O . An incorrect gas mixture can be lethal!
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• Only use Smart TEC with open circuit breathing systems. The gas mixture must be determined for each
pressure tank you use.
• Only use Smart TEC for diving with an independent breathing apparatus. Smart TEC is not designed
for long term exposures with Nitrox.
• Always observe the visual and audible alarm signals of Smart TEC. Avoid situations of increased risk
which are marked with a warning sign in this operating manual.
• If the ascent arrow appears, start to ascend.
• If the flashing ascent arrow appears, start to ascend immediately.
• Smart TEC has a ppO
be adjusted via SmartTRAK. An alteration of the ppO
do not recommend this.
• Frequently check the "oxygen clock" (CNS O
Ascend and finish the dive if the CNS O
• Never dive deeper than the Maximum Operating Depth (MOD) pertinent to the gas mixture in use.
• Always check the diving limits considering the oxygen content and standard sports diving procedures
(decompression sickness, oxygen toxicity).
• In accordance with the recommended maximum diving limit of all instructional agencies, do not dive
deeper than 40 metres/130 feet.
• The danger of nitrogen narcosis has to be taken into consideration. Smart TEC gives no warning about
this.
• On all dives with Smart TEC, make a safety stop for at least 3 minutes at 5 metres (15 feet).
• All divers using dive computers to plan dives and indicate or determine decompression status must use
their own computer, which they take with them on all dives.
• If Smart TEC fails at any time during the dive, the dive must be terminated, and appropriate surfacing
procedures (including a slow ascent and a 3 to 5 minute safety stop at 5 metres /15 ft) should be initia-
ted immediately.
• Comply with the ascent rate and carry out any decompression stop required. If the computer should
fail for any reason, you must ascend at a rate of 10m (30 feet) per minute or less.
• On any given dive, both divers in a buddy pair must follow the most conservative dive computer for
that particular dive.
• Never dive without a buddy. Smart TEC does not substitute for a dive buddy.
• Only make dives that are appropriate to your level of dive training. Smart TEC does not increase your
knowledge of diving.
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Diving has many inherent risks. 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, the default limits of which are set at 1.4 bar ppO
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exceeds 75%.
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) and compressed air (21%O
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max to higher than 1.6 bar is dangerous and we
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Limit), especially in the range higher than 1.4 bar ppO
) only. Do
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max. This limit can
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I UWATEC ® Smart dive computers
.