I recently purchased a used 6-stage BRS RODI system with a Aquetec booster pump. The pump came with the auto-flush and the 40psi pressure switch for the clean water line. After watching countless youtube videos, I feel very confident that I have the system setup correctly. I currently have a manual shutoff valve on the clean water line, but after closing this valve, the booster bump continues to run. I thought the 40psi inline pressure switch is supposed to shutoff the booster pump? I have the switch wired in correctly between the booster pump power supply and the pump itself. Maybe It takes a while to build up 40psi inside the clean supply line after the 6th stage ( 2 DI cartridges)? I even ordered a new switch from amazon because I thought the original was faulty. Any advice would be greatly appreciated. Thanks.