building my fridge incubator, fan power supply question

[thecricketkiller]

right iv just gutted my small glass fronted fridge, it as a built in fan but im a little unsure on how to run it, iv got a power supply thats adjustable that i can use would that save the fans life if i back it off a bit would that help? (in a normal fridge the fan wouldnt run constant would it?)
also should i put the fan on a timer to come on say for ten minutes every half hour or constant?


any help would be great guys

[fishboy]

I would run it constant to spread the heat evenly.

[thecricketkiller]

do you not think the fan may go bang?

[meatgecko]

Fan is best coming on when you go outside of your required range. it being on all the time would have little to no benefit. best thing to do would be hook your heat source and the fan upto the same stat so you know when it gets cool the heater/whatever would make the heat and the fan would cirulate it :P