| Gas blocks on the
Ouroboros rebreather are located on the front of the divers
harness where they are easily reached. Each
of the oxygen and diluent gas blocks has the facility to
plug in additional gas to a valve on its base. In the case
of Diluent the off-board gas plugged into the gas block
will continue to flow dynamically through the ADV and manual
addition valve. The Oxygen off-board when plugged into the
gas block will run dynamically through the Solenoid and
manual addition valve.
(Click
here to see gas flow chart)
If the gas plugged in is the same as the on-board gas
then the on-board cylinder valve can be left open. If the
on-board and off-board gases are different then the on-board
gas cylinder valve must be turned off.
Now breathe the loop down three times, exhaling through
your nose to purge the loop of the previously selected diluent.
Make sure that after plugging in the new gas and turning
off the in-board cylinder, you change to the new diluent
on the dive screen.
Regularly clean
the off-board connection system.
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Above; Diluent gas block
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Above; O2 gas block
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1=
Oxygen block
2= Diluent
block |
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