Thanks to all. Yes I did misread Arthur's post. Based on above, it doesn't appear I have an issue with sw/32. I checked pressures this morning at 82* F ambient with 75% humidity and reading was 30/280 @ 1500 rpm.

Since high pressure was over 16 bar and never under 12 bar, yes, fan should run continuously. I checked center vent this afternoon at 101* F ambient and it read 46*. I'm quitting while ahead. Will check aux fan in October when temp gets back to the 70's and pressures drop.

Jack