For Professional Well Pump Installations
Need a Square D pressure switch wiring diagram? Square D Pressure Switch Wiring Diagram
NOTE; Disconnect power to the switch from the fuse box or power supply before attempting any adjustment!
Before an adjustment is attempted, measure the exposed thread distance from top of the nut to the top of the stud you are adjusting in fractions of an inch for a reference in case you need to start over. A maximum of 3 turns per nut either up or down should be made each time. Pressure switch adjustment change can only be read after the pump has reached its first adjusted shutoff. The pumps next cut on pressure and cutoff pressure is your new settings.
30/50 PSI Model
40/60 PSI Model
Low Pressure Cut Out Model
(Similar to picture but
with manual reset lever)