5Photo 6DISPOSAL:Depending on local regulations, and the composition of the material you have collected,there can be a requirement for special handling and labeling of the filled and sealedplastic bags. Consult you local Occupational Safety and Health Administration (OSHA)and Environmental Protection Agency (EPA) official for details.MAINTENANCERoutine Maintenance:To ensure maximum performance of your Nilfisk vacuum cleaner, be sure to check yourmain filter regularly. Your filter may need to be shaken out to remove caked dust fromtime to time.Filter Replacement:To ensure that your Nilfisk vacuum cleaner delivers the years of trouble-free operationfor which it was designed, it is necessary to check and replace filters regularly.1. Main Filter: The large napped cotton bag which is semi-permanently mounted inside the container will not requirefrequent replacement. The main filter must be replaced whenthe cleaner no longer develops powerful suction, yet bags arenot full and other filter components are not clogged. Extendmain filter service life by frequent changes of disposablepolyliners and paper bags (photo 7).2. Microfilter: This small aqua green (yellow if equipped with AES Polycompositemicrofilter) felt sock, which fits over the motor bottom will require periodicinspection. Dust will discolor the microfilter. Change the microfilter as soon as anydiscoloration is easily noticeable. Do not shake this microfilter since this can causeliberation of potentially harmful microscopic dust into the air. Carefully remove andTo empty the container and its contents, first turn off the motor.Allow the cleaner to sit undisturbed for at least thirty (30)seconds. Then unsnap the container clips. Once the seal isbroken, turn on the motor again. This will prevent ultrafineparticles which are still suspended in the air inside the containerfrom escaping into the work place. Lift off the container top.Remove the polyliner and paper bag within it (photo 6). Thenseal off the polyliner with the paper bag inside and install a newpolyliner and paper bag according to step 2, Machine Setup.Photo 7