Programming Ws1

Hi,
I have a big probably 80K or 96K grains Water softener with Clack Ws-1 meter valve in my new house. The previous homeowners have not left any manuals or programming instructions and I need to reprogram the system and salt dosage and learn about this system.

I have 4 adults and 2 kids in house and hardness is 31 grains. I read here that there is a way to increase the salt efficiency to above 3000 grains / lb of salt.
I downloaded the clack valve manual butI dont see that in the Clack Manual on how to program the salt dose and none of the threads mention that.

Appreciate if anyone can help .
Mark.

 

Set the program # 25, the capacity at 60K salt dose at 18 lbs and the calendar override at day 4. PrE refill is better than Post refill.