Below is some info on this unit
https://drive.google.com/drive/folde...UZmNmdRVHNpQlU
Can you restart the unit right after it shuts down?
If you have to wait several minutes then I would suspect the motor re: it is overheating and tripping it's internal thermal protect. You then have to wait for the motor to cool down and the protect to reset before it will start again.
If this is the case try turning the drum in the correct direction by hand. It should turn fairly easily. You may want to try this on a couple other units to get a feel for it.
If it is hard to turn then check the drum support rollers etc.