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English
GALILEO 2 TEK (G2TEK) USER MANUAL
WARNING
All rebreathers require unit specific education
before using them. Get the proper certifications
and follow manufacturer recommendations and
procedures when diving with a rebreather unit.
Deviations may lead to severe injury or death.
Rebreathers use multiple gases, bailout
procedures which are equal to gas switching and
many technical diving techniques. Therefore, all
considerations and warnings of the previous
chapters apply to rebreather diving.
When the CCR mode is activated, the
diluent tank appears in O
2
setting.
See chapter:
Activating
CCR
to learn how
to activate this mode.
The dive start setpoint (SP1) has a
selectable range from 0.2 up to 0.95bar
ppO
2
. The bottom setpoint (SP2) has a
range from 1.0 up to 1.6bar ppO
2
and this
is switched normally active on the way to
the bottom or when the bottom depth is
reached.
The SP switch depth is suggested by
the dive computer the same way the gas
switches are suggested in open circuit
mode (predictive gas switching).
The switch points are determined by the
equivalent oxygen contents in open circuit
mode. So, when the switch point is reached
on the way down when the equivalent
content of the gas at that depth reaches
the diluent O
2
level.
For example, with a SP1 of 0.5bar of the air
diluent the depth would be approximately
13.8m/45.3ft in salt water.
D
e
pt
h
D
e
pt
h
Time
Time
SP1
SP2
SP2
SP1
Diving with 2 gas mixtures
Diving in CCR mode
Switch depth between SP1/SP2
Bottom mix
Deco mix
