Hey Francois90. I just googled the model you mentioned (Ingersoll Rand MH22 Screw Compressor), and the looks and characteristics are very similar to the one I owned. I will keep checking. Maybe I will find the exact model and come back with more details about it. My point is that I was struggling with a similar problem. I don’t remember what the original belt model of my Screw Compressor was, but I remember for sure that the one I bought to change it for was a (1460PK12). It fit well, and the tension was good, but it didn’t start. A friend suggested screwing a roller from the belt with tek screws from
scrooz.com.au, and the error disappeared.