super s

I want to replace the sand and carbon media in the tank and reseal this older unit for my Dad. I've read all the threads here on this model and watched all the YouTube videos I could find, and have downloaded the Super S installation/operators manual from several sources... But none of them...

We had a low flow issue in the whole house. It was not a filter problem. The bypass was plugged on our Culligan Super S. A plumber removed the entire top assembly, cleaned the bypass and full flow was restored. He left leaving the valve in bypass. I started to transfer the valve and water shot...