Trident disassembly cleaning and reassembly
https://www.youtube.com/watch?v=UyBYFjD1uhA&t=524s
In addition to what they do in the video, You will have to disconnect and flush DI water through each of the lines with a syringe and then reconnect them. FYI I didn't listen to all of the voice content, I just made sure the show you how to take apart and replace all parts. Also you will need to clean the cuvette and replace the stirbar.
Trident Installation
https://www.neptunesystems.com/getstarted/trident/installation/