How to properly adjust the pressuretrol

midiman143

Hello everyone. I wanted to say thank you in advance to all the great ideas and knowledge shared on this site. So I am in the process of adjusting my pressuretrol to have a cut in of 0.5 and cut out of 1.5 psi, as I have read many times this is the most ideal for these kind of pressuretrols. I also know that these "moneywells" are known to be incorrectly calibrated from the factory and I confirmed that with my little bench test. I wanted to adjust the pressure cut in/cut out which is adjusted by a 0.05 allen wrench (waiting to get) and I believe I can adjust the front dial to reflect the actual working pressures by the screw on the top. So my questions are
#1- are my assumptions about how to actually adjust this thing correct
#2- is there a good trick to getting the lock tight off the nut, I tried acetone with no luck\
#3- Is there any other ideas I should be aware of that I may have missed.

Thank you!

Fred

Yes, your assumptions are correct. The best way I have found to get the lock tight off is to use a soldering iron. The heat will melt it. Sometimes, if you are lucky, you can turn the little set screw without any effort to remove the lock tight.

midiman143

Thank you for the reply @Fred !