Welcome to Rebreather World,
and the CCR Dolphin gang.
While you won't notice it in the pool, the Uwatec computer setup doesn't seem to do well in CCR mode.
If I recall the issue correctly; It isn't expecting the PO2 levels in the shallower depths, that while normal for ccr, would be wayyyy high for an scr, and there for doesn't process things properly.
There have been several threads here recently regarding that.
If I can find one, I'll adit the link.
A VR3 or Explorer is pretty much a "must have" for a ccr dolphin.
Darlene
Here's the thread I was thinking of, or at least one of them:
http://www.rebreatherworld.com/gener...ght=uwatec+air