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Discussion Starter · #1 ·
I tried to adjust my (Milwalakee) PH controller today. I was able to adjust the high (it was already dead on) but when I tried to adjust the 4.01 my screw would not turn far ENOUGH to adjust it. It stoped at 4.4. My Ph controller is about a year old and I don't "clean" the tip of the probe. Do I need a new probe?
 
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