Hi Sir:
Normally, you must make a maintenance to the main motor, because, each main motor, for Heidelberg, is regulatory, that
check the main, motor, for LUBE, and general maintenanc, including brake, and Encoder.
Of course, the main contactor, must be clean, and tight, all cables(wires) .
Thank you , sincerely.
superchock@yandex.com