This article discusses how to backflush the Gaggia Classic Pro. To backflush the Gaggia Classic Pro, review the following information.
Backflushing is the process used to clean out the shower screen, brew group, and three-way valve. The cleaner will remove the old coffee oils and deposits, as well as prevent coffee from building up on the shower screen. The video below shows how to do this.
How To Backflush a Gaggia Classic