I have a Sony Grand Wega LCD/Rear projection Tv model # KF-50WE610 is the fan in back supposed to blow outward

I need to know if I put the fan in the right way. Is the fan supposed to blow hot air out or blow cold air in. Right now I put it back together and the fan is blowing outward. Is this right and do I need to oil the fan (I guess behind the sticker)?