I recently acquired an electric system with a pump. I've brewed one time and it was a great start. How do you clean the pump? I did clean it before I used it by circulating boiling water through the system. I recirculated during the mash and during the last 10 min of the boil. After brew day was complete I cleaned the kettle and added Oxy, got the temps to 160 and circulated that through the system for 20 min or so. After that, rinsed and heated clean water to 160 and recirculated again for another 15 min. Is this sufficient or do i need to clean better? Should i also take the head off of the pump and clean the inside?