Title: Irrigation & Industrial Self-Cleaning Water Filters
Course: Open PRO125-Process Tech 1-Equipment 2 > Section: Module 4: Filter and Dryers

Again these are vendor videos but they give you a good overview in just  a few minutes:

1.

http://www.youtube.com/watch?v=x-s145P2op4

2.

http://youtu.be/J2EhhKoPopA