Adjusting a water pump pressure switch typically involves turning screws or nuts on the switch to change the pressure settings. Here are the steps you can follow:

  1. Turn off the power supply to the pump.

  2. Locate the pressure switch. It is usually located near the pressure tank and has a cover that can be removed.

  3. Locate the adjustment screws or nuts on the switch. There are usually two screws or nuts that control the cut-in and cut-out pressure settings. The cut-in pressure is the pressure at which the pump turns on, and the cut-out pressure is the pressure at which the pump turns off.

  4. Using a screwdriver or wrench, turn the adjustment screw or nut clockwise to increase the pressure settings, or counterclockwise to decrease them. Adjust the cut-in and cut-out pressure settings according to the manufacturer's specifications or your specific needs.

  5. Turn the power back on and monitor the pump's operation to ensure it is working correctly.

  6. If the pressure switch continues to cause issues, consider contacting a licensed plumber or pump technician to inspect and adjust the switch.

Note: The steps for adjusting a water pump pressure switch may vary slightly depending on the make and model of the switch. Always refer to the manufacturer's instructions or consult a professional if you are unsure.