Hi all, Have a small problem on SM74-2 CPTronic compact. The KVT is overheating (temp goes upto 85C) and eventually the machine stops with an error KVT 77FF. The temp goes up after around 20 minutes after production starts and after 10 minutes cool down the machine can be run again. I've monitored the current and voltage and they seems normal. (224V 41A @1111rpm) What might be the problem?