 Imported post
<font color='#000080'>Hi Steve,
In theory on setpoint 1.0 it would work ( you could also use it manually as 100% o2 CCR). However, in practice there would be many pitfalls to the procedure when dealing with a stressed casualty- unfamiliarity with the equipment, you need to wear it to avoid hose-kinks etc, how much life left in scrubber? etc. Most CCR users carry an o2 bail-out DV so would generally be easier to use that to the sacrifice of efficiency,
even post-dive the 3l o2 cyl should be almost full 90% of the time.
ATB,
Terry
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