Quote: (Originally Posted by
Dave Sutton)
Should likely be more than the setpoint as you make your jump, but at minimum, it should be on surface setpoint (0.7 or so) and fully stabilized and holding that setpoint for at least 3 minutes before you dive. I'd be shocked if anyone was teaching it differently.
I still fail to see the difference between eCCR and mCCR. If on eCCR you let the controller manage the O2, what would give you a PPO2 around the setpoint, you loose one important alert mechanism, which is the lung volume reduction in case something is not right (oxygen turned off, controller not working). Ofcourse the proper working of the controller needs to be verified, but that is done in the predive check. After the check, a couple of thorough flushes with O2. Then you jump in. The first time dil is added is at 6 meters.