My compressor does have the intermittent switch so that if you stop spraying, the compressor motor will shut down.  

But when my daughter uses it, she sprays constantly.   (She is using ink on paper right now to get a good feel for how it works.)  Which heats up the motor quite a bit. 

I can't do a large compressor, not enough room in my hobby room for one.   And my hobby room is on the second floor of the house, so if I did get a big one, the whole house will hear it if it runs.  

Now the TC910 in your link looks good.  Does anyone have any experience with it?