Written in easy-to-understand language, without complex formulas or technical theories, this handbook provides readers with basic information to help you acquire a general understanding of how components function and how to keep equipment operating properly. These two volumes belong in every water and wastewater treatment plant as a reference and manual for equipment maintenance. The hands-on approach provides maintenance operators, crew leaders and supervisors with practical information about how the machinery they work with every day functions, and how to keep it running smoothly.