Xaero1701

I've searched this post and don't see any mention of overheating problems like the ones I'm having. I've ran tests with the smelter on the surface of Gale (GPP) and with radiators it runs fine. In orbit with radiators it runs fine. However on the surface of the Iota the first moon the smelter overheats within mins now matter how much cooling power I have. I even tried using 2 large and 2 med stock radiators, still overheats. The exact same setup in orbit runs just fine. Soon as its placed on the surface of the moon it overheats and efficiency goes to zero. Clearly I'm missing something, any ideas?