Uwatec Aladin H, User Manual

Page: 38 / 64

38
ALADIN H USER MANUAL
WARNING
When during an ascent a switch depth is
reached (MOD gas 2 or gas d), an audible
warning sounds and “GAS 2”/“GAS d”, its MOD
and O
2
% blink for 30 seconds.
Procedure:
1. Switch to the regulator with gas 2/gas d
and start breathing.
2. Confirm the change with a press-
and-hold of the right button within
30 seconds. “GAS 2”/“GAS d” and
the oxygen fraction of gas 2/gas d
is displayed for 5 seconds without
blinking.
To interrupt the switch process at any
point, either press the right button until
the original gas is again active, or do not
confirm the gas change process.
No change of gas mixture:
If you fail to confirm the change of gas
mixture or if you interrupt the switching
procedure by pressing the right button,
the Aladin H displays “GAS 1”/“GAS 2”,
the MOD and the oxygen fraction for
5 seconds. The Aladin H continues to
calculate with gas 1/gas 2 only and adapts
the decompression calculation accordingly.
F
NOTE: After the decompression
calculation has readjusted itself to
reflect a failed switch, if you once
again exceed the switch depth (MOD
of gas 2/gas d) the Aladin H will revert
to the decompression calculation that
considers gas 2/gas d also, since
upon ascending again you will have
a renewed opportunity to perform
the switch once the switch depth is
reached.
MOD of gas 1
Belated or manual change of gas
mixture:
You can catch up on a required change to
gas 2/gas d until you reach the surface.
Procedure:
1. Initiate the switching process by
pressing and holding the right button.
The Aladin H displays “GAS 2” / “GAS
d”, MOD and the oxygen fraction of gas
2/gas d blinking for 30 seconds. By
pressing the right button you can select
“GAS 2”, “GAS d” or “GAS 1”.
2. Switch to the regulator with the selected
gas mixture and start breathing.
3. Confirm the change with a press-and-
hold of the right button. “GAS 2”,“GAS
d” or “GAS 1” and its oxygen fraction
is displayed for 5 seconds without
blinking. The decompression calculation
will readjust accordingly.
Submerging again after a change to
gas 2/gas d:
If, after a change to gas 2/gas d the
Maximum Operating Depth (MOD) of gas 2/
gas d is exceeded, the ppO
2
max warning
will appear. If this happens, switch back
to gas 1 or ascend to the MOD of gas 2/
gas d. Failure to do so can result in oxygen
poisoning.
Procedure:
1. Initiate the switching process with a
press-and-hold of the right button.
The Aladin H displays “GAS 1”/“GAS 2”,
MOD and the oxygen fraction of gas 1/
gas 2 for 30 seconds.
2. By pressing the right button you can
select “GAS 2”, “GAS 1” or “GAS d”.
3. Switch to the regulator with the selected
gas and start breathing.