4.2.1 Set Gas 1, 2 or d
You may use your MANTIS with all Nitrox
mixes from Air to pure oxygen.
By pressing the SEL button in this display
the oxygen content of the Gas starts
blinking. By pressing the +/UP or -/DOWN
buttons you may scroll the value from 21
up to 100%.
By pressing SEL the content is confirmed
and the ppO
2
starts blinking. By pressing the
+/UP or -/DOWN buttons you may select the
value from 1.00 bar up to 1.60 bar.
It is possible to disable the MOD setting
for Gas 1 (depth «---» displayed on the top
row), but this requires the security code
313 from the user. By pressing the SEL
button the user will accept the given value.
Refer to the chapter Diving with two or
more gas mixtures for more information
on using Gas 2 and d. Setting Gas d or Gas
2 are similar to Gas 1. Gas 2 can only be
set if Gas d is enabled and set.
F
NOTE: Diving with a ppO
2
higher than
1.4 is dangerous and may lead to
unconsciousness, drowning and fatal
injury.
F
NOTE: ppO
2
is xed to 1.60 bar when
selected oxygen content is 80% or
higher.
Enabling the CCR mode will change the
Gas 1 and Gas 2 settings to Setpoints
and Gas d to bailout. Refer to the chapter
Diving with CCR mode to learn more
about diving with CCR mode.
So, when the CCR has been enabled, by
pressing the SEL button in this display the
oxygen content of the Diluent tank starts
blinking. By pressing +/UP or -/DOWN
buttons you may scroll the value from 21
up to 40%.
By pressing SEL the tank content is
confirmed and the Setpoint 1 (SP1) ppO
2
starts blinking. By pressing +/UP or -/
DOWN buttons you may select the value
from 0.3 bar up to 0.95 bar. By pressing the
SEL button the given values are confirmed.
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