I am trying to find a blank portafilter to buy to back flush the Carimali but I have found that most say that they don't fit Carimali models. I'm also trying to find any information about maintaining and what cleaning products to use on this machine as I did not receive any manual.
They make rubber backflush disks that you can place inside any basket that can turn it into a blank basket with worrying about the size.
every espresso machine uses a blank. There are different sizes you just need the right one.
and just use a espresso cleaner in powder form
go to this web page http://www.espressoresource.com/
ask for angelo-this guy knows everything
www.vanelis.com lists these under their parts page, espresso parts, Carimali.
I can't address the particular brand, but if you contact espressoparts.com in Seattle, they should be able to help you on both the backflush disk and the cleaning. Although I did a search for your brand and the blank that came up excluded the Carimali. Good luck.