An occupant support includes a mattress 20, a detector 54 and an energy management system comprising thermally conductive pathways and a controller 60. The system includes a database having a plurality of data entry blocks, each block corresponding to a time interval and an internal database timing device configured to sync with an external real-time time server and maintain accurate time in the database. Progressive insertion of the roller cartridge into the base unit causes a camming mechanism provided on the base unit and the roller cartridge to interact so as to move the cleaning and adhesive rollers from a non-operatinig position in which the rollers are separated into an operating position in which the adhesive roller is brought into abutment with the cleaning roller.