When setting the low pressure cut out switch, the cut out valve is calculated using which formula?

The correct formula for setting the low pressure cut out switch is established by considering how the cut out function operates in relation to the cut in pressure and the differential. The cut in pressure is the point at which the system begins to operate or engage, while the differential signifies the range within which the system will operate before it triggers a shutdown.

To find the cut out pressure, you need to subtract the differential from the cut in pressure. This is because the differential indicates how far the pressure can drop from the cut in point before the switch will deactivate the system to prevent damage or inefficient operation. Therefore, when you calculate the cut out, it becomes essential to set it at a point that is lower than the cut in pressure by the value of the differential.

In this context, if the cut in pressure is established at a certain level, subtracting the differential will correctly set the cut out pressure at an appropriate level that ensures safe operation, thus preventing the system from engaging too low, which could lead to inefficiencies or system failures. This approach preserves the intended range of operation by defining clear boundaries for the pressure levels involved.