94
VII Trouble Shooting
VII Uwatec
®
Aladin
®
Air Z O
2
possible reason(s) response
symptom
Desaturation time and/
or no fly time are very
long.
<Atn> appears.
An unexpected decom-
pression stop appears
in place of no-stop time
or decompression in-
creases rapidly.
Attention messages are
not given acoustically.
Remaining bottom
time (RBT) always very
short.
Too many repetitive dives, yo-yo-
diving, square profile repetitive dives
or disregarding decompression stops.
Dissolved nitrogen and/or microbub-
bles must be off gassed first.
Too many repetitive dives, too fast
ascents, yo-yo-diving, square profile
repetitive dives or disregarding de-
compression stops. Dissolved nitrogen
and/or microbubbles must be off
gassed first.
Too rapid an ascent or ignoring
decom-pression stops have caused a
large number of microbubbles, which
leads to an attention message (war-
ning of bubbles).
The acoustic signal of the attention
messages is switched off.
Remaining pressure is set too high
(standard setting 40 bar).
Reserve valve not open.
Plan sufficiently long surface interval
and dives at lower risk.
Plan sufficiently long surface interval
and dives at lower risk. Review chap-
ters III 5 and IV very carefully.
Plan sufficiently long surface interval
and dives at lower risk. Review chap-
ters III 5 and IV very carefully.
Reactivate attention messages by
means of the MemoMouse and
DataTalk.
Alter the remaining pressure setting
by means of the MemoMouse and
DataTalk.
Always open reserve valve when
using Aladin
®
Air Z O
2
.
