A multiple-piece seal is used for a cure oven circulating fan. The system includes a control application for said handling application, which can be associated with said local processing unit, said control application being suitable for generating a univocal certification code for the application. The data manager may change the state of the data module to the secondary state. The speaker output signal processing section performs predetermined signal processing on an input signal to output the resultant processed signal to a speaker array, and then performs internal delay compensation processing on the signal to output the resultant processed signal to the adjoining sound unit. The sliding motion may scrape off an oxidation or contamination layer thus providing a reliable electrical contact between the connector and the cartridge.