The compressor has a filter installed in the filter holder – which looks like a small switch beside the tubing holder. Please be sure to check the filter every 6 months, for optimal NasoNeb System use. If it’s dirty, replace the filter.
Pull the filter cover out of the compressor (the cover pulls straight out)
Remove the filter from the cover
If the filter is discolored, replace with a new filter, otherwise, put filter back into the filter cover
Insert the filter cover back into the compressor