DeVilbiss - Fix My Compressor

I just replaced my pressure switch (120/150) and the pressure keeps going up – No shut off?

Devilbiss 5140117-89 Pressure Switch

I just replaced my pressure switch (120/150) due to the compressor not shutting off at 155+. Just installed exact replacement…

DeVilbiss air compressors have been around a long time. This next paragraph is provided by Wikipedia: “MAT Industries LLC (formerly…