water softner ??

I just bought aother house with a master water conditioning sys. My ?is when and how do i add the salt? the sys. has only one tank. the sys is a MBA-AN-10 thanks

That isn't a softener, it's an Acid Neutralizing (AN) filter. The maintenance is adding new mineral periodically. The pH of your water and how much water is used dictates the type of mineral and how frequently you have to add new.

The control valve is usually an Autotrol 263 or 268.