Contura 617 Safety Module Error

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I went to use our Contura this afternoon, and it kept cutting the drives off with the 617 Safety Module error. From what I have read online it may have something to do with the air pressure on the back of the CMM. I adjusted it a year or so ago and adjusted it to be above 5.10 today and it is still kicking the drives off. What is the highest I can set this number or is it another issue all together? Any assistance would be appreciated.