I have totally messed up my pressure switch settings! Now what?

No need to panic, you are not the first nor will you be the last to change your pressure switch settings so that you cannot get it back to the factory settings or to the cut-in and cut-out setting that you were aiming to achieve.

Adjusting the cut-in setting does not change the differential. As the cut-in value changes, the cut-out value changes by the same amount and in the same direction. For example, increasing the cut-in pressure by 10 psi will also result in an increase in the cut-out pressure by 10 psi. Most often the problems occurs when one attempts to adjust the differential! Adjusting the differential changes the cut-out setting only, the cut-in does not change.

This article provides information on where the adjustment nut positions are at the factory setting. You can readjust accordingly and then start over making the desired adjustments. This time around you may want to visit the Boshart Knowledge Base center on our website for information on how to adjust a pressure switch.

How do I adjust the CUT-IN and CUT-OUT settings of a Pressure Switch?

https://support.boshart.com/how-do-i-adjust-a-pressure-switch

PRESSURE SWITCH RE-SET

The charts below have the dimensions and approximate number of exposed threads above the nut for resetting a pressure switch to approximately the factory setting.

The easiest way to measure is using a digital vernier to measure from the top of the threaded adjustment post to the top of the adjustment nut.