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.
How to: reset your low pressure cutoff switch. How To Reset a Square D FSG-2-M4 switch (or equivalent) Low Pressure cut off switches or M-4 switches are an inexpensive way to help protect your water well pump from running dry.However they are not fool proof. One of the most common over the phone repairs we do is how to reset this switch.asically, any time your pressure drops 10 psi below the cut-in pressure,the switch will trip. To reset the switch you must hold the lever (see figure B) on the side of the switch up at about a 30 degree angle to restart the pump. If the switch makes an audible click the lever is too far.