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Turn off the Pump: Ensure the pump is off and disconnect the power.
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Locate the Pressure Switch: The pressure switch is typically located on the end of the pump motor.
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Adjust the Screw: Using a screwdriver, turn the adjustment screw on the pressure switch.
- Turn clockwise to increase the pressure cut-off setting.
- Turn counterclockwise to decrease it.
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Test the Pump: Reconnect the power and turn the pump on. Check if the adjustment prevents backflow.
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Fine-tune if Necessary: Repeat the adjustment if the initial setting isn’t adequate.