How to Adjust a Shallow Well Jet Pump Pressure Switch
- A shallow well jet pump's pressure switch regulates the amount time the pump motor runs.
- Turn on the power to the pump.
- Adjust the pressure switch's high-limit adjustment screw with a 3/8-inch hex-head screwdriver.
- Turn the adjustment screw left, or counterclockwise, to reduce the pressure switch's setting.
- The jet pump turns on once the water pressure drops to the set low limit.
