Continuous with power saving. I would assume a normal day in the office!
7 hours per day etc. 'Typical life of CRT' is that the same as a
trinitron? or are trinitrons different.

More or less, they are the same.

Trinitron tubes employ a different electron gun design than conventional
picture tubes as well as employ an aperture grille instead of a shadow mask.

But, Trinitron tubes are still cathode ray tubes. This means that the electron
guns will wear out through use in about the same amount of time as any other
picture tube, give or take a few years. A benefit could be that Trinitrons are
more efficient because of the aperture grille, but that doesn't change the
aforementioned fact.

There are two adjustments on the flyback. But posts in the forums state
them as H & V focus? I have tried adjusting both and they just change
the focus.

Unusual, but there have been stranger things.

There should still be a way to adjust the voltage level going to the picture
tube from the flyback.

However, continuous operation for over five years, even with power saving, may
wear out a picture tube. You may have to consider installing a CRT booster. -
Reinhart