alarm 2685 Z-axis aperture overheat

[minutericesentra]

Hello, first time poster on this forum, lots of good info here.

Anyways, it's a 2006 FO-3015NT AF4000E... will a lens with a few spots cause this alarm? Or should I look for other causes?
We are cutting .062 H14 Aluminum pretty easily but can only cut for 4-5 minutes before it alarms out.

Had the same alarm with a different lens cutting .125" 304SS a few months ago, limped throught that job, now I'm stuck on this one.

 

[drossfree]

CHeck the mirror directly above your head sounds like your issue is there

 

[minutericesentra]

Well, I haven't had time to look at the mirror, but I found another lens to try and it's doing fine now... guess the old lens with spots was the culprit. I'll for sure check that mirror though next time it's down, Thanks!