Aspirin, also known as acetylsalicylic acid (ASA), is a salicylate medication, often used to treat pain, fever, and inflammation. Aspirin also has an antiplatelet effect by stopping the binding together of platelets and preventing a patch over damaged walls of blood vessels.
The device, which connects to the plumbing, regulates the home's water supply. When the water pressure drops to a certain level, the switch senses more water is needed, and spring-loaded electrical parts make contact, turning on the well pump. When the pressure returns to a preset level and the well tank is filled, the electrical contacts separate, and the well pump turns off.
The pressure gauge is essential for diagnosis, so fix that first. There is possibly a problem with your pressure switch, your pump may not be working correctly and generating enough pressure, or there could be a leak in the line somewhere. Once you fix the pressure gauge, close the valve to the rest of the house and update this post to say what's happening with the gauge.