When we bought our home the water softener was included but unfortunatly there was no manual. Our softener does the same as the other postings by water soteners owners. It is hard to set the time and when we do it starts running at a time we did not set. We put in a bag of salt in January and it is now April. The salt level has not moved. Help! We need to know how to set the time and amount of salt we want to use and how often to have the softener charge.