With the unit installed in the line and power supplied, complete the following steps to calibrate switch actuation point with a proper flow rate. A small flat-blade screwdriver is the only tool required.
- Adjust liquid flow in the line to the rate at which switch actuation is desired.
- Insert screwdriver into opening on backside of housing and fit blade into the potentiometer adjustment screw inside.
- If LED is not illuminated, slowly turn screwdriver counterclockwise and stop as soon as LED illuminates.
- If LED is illuminated, turn screwdriver clockwise until LED light goes out. Then, slowly turn screwdriver counterclockwise and stop as soon as LED illuminates.