"Several big reasons:
detergent can make your espresso taste less than desirable. In
addition, the undissolved granules can cause the solenoid valve to jam
open or not close completely. Espresso cleaner are especially designed
to dissolve completely and leave no residues.
detergent must be gentle enough so as not to harm the soft metals or
rubber components inside the group and solenoid valve. A harsh detergent
could ruin valve seats, or worse yet attack the group's metal. Espresso
cleaner is especially formulated to gently clean the interior of your
- Use of inappropriate cleaners or improper use of recommend cleaners may damage your machine; these repairs are not covered under warranty.