Good day good people of the Injection Moulding world. I have an elusive "short circuit on thermocouple" alarm that pops up whenever it feels like it...sometimes frequent...sometimes a couple times a shift. It interupts the cycle which becomes very annoying when trying to accomplish other tasks of the day. This occurs more frequently on our 450 and 650 ton Kawaguchiis. Just toggle the cycle switch to off and back to cycle the alarm clears and off we go...I am setup/process tech and have an understanding of the entire machine function but electrical being my weak point and our 1 maintenance man is busy with other priority jobs. He tells me he believes there is low voltage in the plant to certain machines...but why would it show same alarm on different machines...possible I guess but I would have thought other problems would arise other than a silly thermocouple alarm...Thank you in advance for any info or insight to this issue.

Play safe...if it can happen it will !