Okay, I searched this thread and r.DIN posted the information June 3, 2020 about the Maintenance message every 60 cycles. It came as part of a software update. That's why it's not in the manual. Version 2.2.9v8 06/03/2020 Change log – CRITICAL fix for stripes of dust on the record The water flow dynamics causing the dust stripes have been more complicated that we initially anticipated. The issue fixed by the 2.2.0 version was not the only thing affecting the dust removal. The record revolution direction and movements affect it as well. The software 2.2.9 version improves it by changing the record revolution direction and the way the record moves. – Water level adjustments while the record is being washed On rare occasions the water level can drift a bit. In order to make it more precise, the machine will automatically adjust it if necessary during the washing cycle. Clicking valves can be heard while the adjustments are being made. – Fix for incorrect remaining time Occasionally the machine could count down to 0:00 and keep drying fans running for another 10s. – Reminder for Filter Change Every 50 washing cycles, the machine will now prompt a reminder to clean the water filter. – Automatic maintenance program After every 60 washing cycles the machine will automatically run a 30s maintenance cycle to clean the valves. – Water removal during drying On longer drying programs, the machine will check and additionally remove water from the ultrasonic cleaning tank every 2 min. – Improved clock accuracy The machine will use an external clock source to ensure that the machine’s second length corresponds to universal time. – Improved sensor accuracy when emptying ultrasonic tank On rare cases the maintenance free water level sensing leaves water at the bottom of the ultrasonic tank. This improvement resolves the issue.