At the front there is a door behind which a coffee filter of size 4 must be placed. Fortunately, Melitta have great customer service who will arrange a replacement part to be sent to you, or send you a packaging box so you can send your coffee grinder and brewer off for repairs. Some are loved by us all, others have split the Coffee Dorks team in half. © 2017 by Coffee Dorks - All Right Reserved. In this way a better aroma is created. In summary, it can be said that about 85 percent of buyers are satisfied 4 stars or even very satisfied 5 stars. The heating plate allows the temperature of the coffee to be maintained at around 80 degrees for a maximum of 120 minutes. And of course, it includes details on cleaning the machine… this is a chore. If the above steps do not solve the problem, the grinder may be jammed.