What does the display message “Please Milk Clean” mean?

Dacor frequently asked questions

Automatic Coffee Systems FAQ

What does the display message “Please Milk Clean” mean?

Answer:

The café latte, latte or cappuccino button has been pushed within the last two hours. Perform a milk cleaning. Note: The coffee system detects when one of the buttons that dispense milk was last pushed and displays "Please Milk Clean" two hours later, even if milk was not actually dispensed. The message will not clear until a milk cleaning is performed.