UMS5 Pro Bundle S5 Air Manager - Realistic Maximum Temperature?

[rachael7 21]

So I know the S5 is limited to 50C chamber temperature with the Air Manager and I know higher temps will damage components. What I don't know is what temps people are actually getting. I'm printing polycarbonate and I really want the chamber temperature at the safe maximum for the machine, but even with the bed at 120C, I never get the chamber even close to 50C.  The most I'm seeing is about 35C, which is about 15C over ambient in my office.  I'm sure if the machine was in a heated closet or something I could get it hotter, but that's what I'm getting in a normal (if slightly cooler than average) office environment.  What max chamber temps are you seeing?  Has anyone added an auxiliary chamber heater to get the chamber up to the machine's maximum of 50C?

[rachael7 21]

Also, can anyone confirm if the Air Manager actually does close loop chamber temperature control? As near as I can tell, it just picks a fan speed at the beginning of the print and keeps it the same, regardless of what the chamber temperature actually does. @SandervG ?