I may not be the best person to offer advice on this as that's not a bit of kit I have any experience with, hopefully someone with more knowledge will come along and help you out from a experienced point of view.
If power supply heat is effecting the electric parts that is a pretty big design flaw and the thing that comes to mind is the original xbox 360 console (ring of red) where the heat generated inside it would warp the motherboard.
For a big bit of kit like that though if I were worried about the electric part I would probably invest in a uninterruptible power supply to go between it and the mains. These give you some time to shutdown properly in the event of a power cut and regulates the power which protect against micro surges.


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