The model number is useless. You need the actual name of the ceiling fan. For example Hampton Bay Model Ac552 may actually be a Hampton Bay Redington III > I spent ages trying to find a manual. If...
Would checking the installation manual help. It can be downloaded here
Item #18
http://lightingworldbay.com/hampton-bay-ceiling-fan-manuals/
Hampton Bay Model AC552 Ceiling Fan Manual