I recently purchased a water softner from a local company. I have the
Clack WS-1 valve and have been reading over the manual to ensure I have
all the correct settings. I am concerned that some of the settings are
wrong.

Is there away to verify the grain capacity? Currently it is set at
48,000, but from my conversations with the company I think it is actual
more then that. Also it is set to used 29 lbs of salt per regeneration
(seems high). How do I calculated how much it should use? Do I want
Normal or Longer backwash? Downflow or Upflow regeneration?

As of a month ago my water hardness was 27 and it is coming off of city
water.

Any help would be appreciated.