hi, ive been using 5 axis trunion for two weeks now without problems until yesterday when this alarm occurred (A axis secondary encoder positon fail), it happened today again.
I just reseted the program, zero returned all axes and then restarted program and it works ok after that.

but I want to know why this problem occurs, where this secondary encoder is and can it be checked out easily or not (machine is under warranty).

the stupid thing about this 5axis trunion is that haas recommends not flooding the trunion in coolant and not to use compressed air near gaskets, but that is impossible, we are making aluminum parts and the coolant must be present (as much as possible) because if tools go dry they get clogged by chips and break easily (happened to me multiple times when coolant flow was weak or off).

second thing, how the hell do you clean the table if you cant use compressed air?