12
2 Aladin
®
Air Z O
2
– More Safety in Diving
I Uwatec
®
Aladin
®
Air Z O
2
1. Only dive with nitrox or SCR if you have been trained thoroughly by a recognised
agency.
2.
Only use the pressure transmitter with open breathing systems. Aladin
®
Air Z O
2
must be set for a determined gas mixture. In partially-open and in closed circulation-
systems, the gas mixture in the breathing loop can vary considerably from the mixture
in the tank(s).
3. For dives with an SCR always use an Oxy2.
4.
Aladin
®
Air Z O
2
when used with Oxy2 does not show the tank pressure nor related warnings.
Check the pressure gauge frequently.
5. Only use Aladin
®
Air Z O
2
for diving with an independent breathing apparatus. Aladin
®
Air Z O
2
is
not designed for long-term exposures with Nitrox.
6.
If a pressure transmitter is used the Aladin
®
Air Z O
2
always calculates based on the gas mixture
set by the user. Before each dive it is essential to check that this mixture setting is correct for the
actual gas mixture to be used. Maximum deviation from the mixture calculation must not exceed
1% O
2
. A wrong gas mixture can be lethal!.
7. Aladin
®
Air Z O
2
has a ppO
2
-warning, the default-limits of which are set at 1.5 bar ppO
2
max. This limit
can be adjusted via MemoMouse/Data Talk in the range of 1.2 to 1.95 bar. An alternation of the ppO
2
max to higher than 1.6 bar is risky and is not recommended.
8. Frequently check the „oxygen-clock“ (CNS O
2
%), especially when the ppO
2
is greater than 1.5 bar.
Finish the dive if the CNS O
2
% exceeds 75%.
9. Make sure you have a sufficiently long surface interval, just as when diving with compressed air.
Oxygen also needs sufficient time to leave the body. Go on the next dive only when the CNS O
2
%
has dropped below 40%.
10.Aladin
®
Air Z O
2
is a personal instrument like any other diving computer. This still applies when
diving with compressed air (21% oxygen) between two nitrox-dives. Aladin
®
Air Z O
2
can be adjus-
ted to compressed air and then also includes the calculation of the CNS O
2
% in the same way as
with any other nitrox-dive.
11.Always remember: setting a wrong mixture causes either insufficient decompression calculations or
a too low calculation of the oxygen-toxicity!