Using this pressure switch is easy. First, make sure your washing machine is unplugged and turned off. Locate the old pressure switch in your Simpson Eziset top - loading washing machine, and carefully remove it. Then, install the new pressure switch in its place. Make sure all the connections are secure. When using your washing machine, this switch will help maintain the correct water level. As for maintenance, keep it clean and dry. Check the connections regularly to ensure they're tight. If you notice any problems, like inaccurate water levels, turn off the machine and check the switch. If it's damaged, replace it right away. Remember, always buy genuine parts like this one to ensure the best performance and safety for your washing machine.