Operation Manual


English
4.2 Tank settings
By pressing long the left button at main
display (shortcut) or selecting  ->
O2 settings (), you can change
the content of the tanks. When the gray
cursor is highlighting the Tx, you may scroll
between the tanks with +/- buttons. The
>> button selects the current tank to be
modied.
F
Note:
 Tank1isalwaysthestartinggasfrom
thesurface.Whenyou have setmore
than one tank, you may change Gas
during the dive manually, or when
Galileosuggestsit.
When the cursor highlights the O2 part, you
may edit the Oxygen percentage of the mix
with the + or – buttons. The possible range
for the O2 setting is shown at the bottom
of the screen with black background. By
pressing >> you select the current value
and proceed to the Helium fraction.
F
Note:
 TheminimumO2settingfortankT1is
18%.Thisisduetothelimitationthat
adivemustbeginwithgas1.
 To ensure an adequate supply of
oxygen to the body, the gas used at
thebeginningofthedivemustcontain
enoughoxygen(youcanuse a travel
mix or one of the decompression
gases), as is required for Tank 1.
Thereby,therstalarmaboutAbsolute
Minimum Depth would be given at
shallowerthan1.2meters.
!

Heavy work while at the surface or at shallow
depths while breathing with less than
21% oxygen fraction may cause a loss of
consciousness and lead to drowning.
When the cursor highlights the Helium part,
you may edit the Helium fraction of the mix
with the + or – buttons. The possible range
for the Helium setting is shown at the
bottom of the screen with black
background. By pressing >> you select the
current value and proceed to ppO2 setting.
F
Note:
 The Galileo calculates the maximum
possibleHeliumfractionbysubtracting
theOxygenfractionfrom100%.
!

Helium reduces the narcotic effect of the mix,
but doesn’t remove it. At great depths Helium
also may cause an effect called “Helium
tremors”, or HPNS (High Pressure Nervous
Syndrome).
English