Shut off the Beachcomber at the control pad on the top edge. Pull down the lever to the "Off" position on the electrical box wired to the Beachcomber to shut off power.
Open the service panel on the bottom side of the Beachcomber, turning the handle clockwise to access the pump, heater and pressure switch, which is on the far right, at the bottom.
Turn the knob on the top of the pressure switch counterclockwise to lower the pressure at which the switch will activate. This increases the sensitivity of the switch. Each click as the knob is turned indicates an additional adjustment stop of one PPSI.