Question about Unold Gusto

For smaller quantities of ice cream, do you have to set a shorter preparation time yourself or does it stop automatically when a certain consistency is reached? If automatically, how do you know when to add hard ingredients (biscuit pieces, chocolate pieces, etc. that you should put in about 2 minutes before the end of preparation)? PS: I tried the machine yesterday. I stopped it by mistake to add hard ingredients and then it wouldn't start (motor turned but not the grinder): Is it a defect or did I do it wrong? Thank you very much!

I always make at least half the maximum amount. If the mixture becomes too hard, the motor stops turning. However, this rarely happens. In your case, I would add the desired ingredients and then switch off after two minutes.
I have never experienced the motor turning but not the mixer. If it does, then both stop.
In my case, after what feels like not very frequent use, the bearings are defective so that the motor no longer wants to turn at all. Even when the mixture is still liquid. However, this should not be the case with a new machine. Unfortunately, I would have to send the machine to Germany for repair. With the postage costs charged by the post office, it's not worth it. Especially as it is not clear how much the repair will cost. The manufacturer won't commit to this.