I just removed the fans completely, no need for them with LTC and I wont be using BTC mode.
Is there any chance the BTC core can be come "active" and start hashing? Lets say some kind of cgminer bug or something? Worried about that at all?
I hope it never does but I have only got a 100W power supply driving 10 of them so I expect the supply would just die if BTC mode turned on.