Aqua Lung i550C Owner's Manual page 37

If the current PO value is greater than 1.6, then a warning not to switch will display. The i550C will maintain the
2
current gas without switching. The diver may overide the i550C and force the gas switch by pressing the SELECT
button during the DO NOT SWITCH TO message.
WARNING: Switching to gases with a PO
!
and drowning. Doing so should always be avoided. It is intended as a last resort option because of the
likelihood of injury or drowning. Always dive within your training, experience, and skill level.
DIVE MAIN
current
PO value
2
of selected
gas
© Aqua Lung International, Inc. (2018)
above 1.6 has a high risk of oxygen poisoning, convulsions,
2
FO setting
2
37
DIVE OPERATION
Doc. 12-7909-r06 (7/10/19)