This day-long short course is intended for those who wish to understand the operation of mechanical, diffusion, and cryo pump systems, how materials are chosen, and how water vapor is pumped efficiently during the roughing cycle. It will conclude with a discussion of several diagnostic or problem solving techniques. After completion, participants should be able to explain the operation of diffusion, and cryo pumped systems; have a basic understanding of vacuum materials; understand how water vapor is pumped without condensing on interior surfaces, and have thought about some approaches to solving problems with non-performing systems.