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1 Diving at Reduced Risk with Aladin
®
Air Z O
2
IV Uwatec
®
Aladin
®
Air Z O
2
English
IV
– If the ascent arrow appears, start ascending.
– If the flashing ascent arrow appears, start to ascend at once.
– Observe <CNS O
2
LIMIT> (ascend at 75%).
– Comply with the ascent rate and decompression stops if any.
– If the Aladin
®
Air Z O
2
fails at any time during the dive, the dive must be terminated, and appropriate
surfacing procedures should be initiated immediately.
– You MUST follow the ascent rates as indicated by the Aladin
®
Air Z O
2
and if the computer should
fail for any reason, you must ascend at a rate of no greater than 10 metres per minute.
– 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 your diving cylinder is equipped with a reserve or “J“-type valve, make certain that the reserve
is in an open (down) position. Failure to keep the reserve open will result in the improper calculation of
dive data depending on tank pressure.
– On any given dive, both divers in a buddy pair must follow the most conservative dive computer for that
particular dive.
– You MUST be familiar with all signs and symptoms of decompression sickness before using the Aladin
®
Air Z O
2
! Seek IMMEDIATE treatment for decompression sickness should any of these signs or symptoms
occur after a dive! There is a direct correlation between the effectiveness of treatment and the delay bet-
ween the onset of symptoms and the treatment for decompression sickness.
– Always observe the visual and acoustic alarm signals of the Aladin
®
Air Z O
2
. Avoid situations of increa-
sed risk which are marked with a warning sign in this operating manual.
1.3 Minimizing risk on repetitive dives
With consecutive repetitive dives, there will be excess nitrogen in the body due to the accumulation of
nitrogen on the preceding dives. Depending on the length of the surface interval, there could even be
gaseous nitrogen (microbubbles) in your body. This accumulation of both absorbed as well as gaseous
nitrogen in the body can greatly increase the risk of decompression sickness on subsequent dives. That risk
can be minimized.
– Respect the rules for the first dives.
– Wait until <CNS O
2
LIMIT> is less then 40%.
– Match gas mixture to the intended dive.