Is module box is the same as e-box? I think I came accross to a site that shows you how to clean this fan..

http://www.keysolutions.com/M-Class.nsf/aac7d56ca8fd884b852563be00610639/75f1f0428ed1baea85256c9b0052c2d3?OpenDocument

Maybe this could work elimimating the noise..