Certified Water/Wastewater Maintenance Tech. II (CWWMT III)

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Covers the principles on which electrical test instruments operate. Basic instruments covered include voltmeter, ammeter, wattmeter, ohmmeter, and meg ohmmeter. Covers AC metering, split-core ammeter, use of current and potential transformers. Includes detailed coverage of modern multi-meters. Explains functions and uses of oscilloscopes.

Lesson 1: Principles of Meter Operation 

Lesson 2: Ammeters, Voltmeters and Watt Meters 

Lesson 3: Resistance Meters 

Lesson 4: Multi-meters 

Lesson 5: Oscilloscopes

Covers three-phase motor principles for induction, synchronous, and multi-speed dual voltage motors. Gives recommended maintenance practices for large AC motors. Covers principles of three phase motor starters, part winding, reversing, jogging, alternator principles and operation. Describes three phase power distribution.

Lesson 1: Principles of Three Phase Motors 

Lesson 2: Induction Motors 

Lesson 3: Synchronous Motors 

Lesson 4: Multi-speed Motors 

Lesson 5: Maintaining Three Phase Motors 

Lesson 6: Motor Starters 

Lesson 7: Three-Phase Motor Controllers 

Lesson 8: Alternators 

Lesson 9: Auxiliary Generator Systems 

Lesson 10: Power Distribution Systems

Covers the broad range of industrial motor starting and control equipment, including NEMA sizes and ratings. Includes pushbutton control stations, limit switches, mercury switches, mechanical and magnetic plugging, foot switches, and pressure, temperature, and float switches. Covers control panel wiring and special applications.

Lesson 1: Motor Starters 

Lesson 2: Switches and Controls 

Lesson 3: Limit Switches 

Lesson 4: Special Control Switches 

Lesson 5: Timers and Counters 

Lesson 6: Control Relays 

Lesson 7: Equipment for Hazardous Locations 

Lesson 8: Special Motor Controls 

Lesson 9: Motor Control Centers 

Lesson 10: Control Panel Wiring

Covers understanding the systems, using schematic diagrams, installation procedures, cleanliness and safety. Includes tubing cutting, bending, and flaring, identification and selection of proper fluid, and charging the system. Discusses planned maintenance specific repair/replacement recommendations, system diagnosis, and troubleshooting.

Lesson 1: Hydraulic Systems 

Lesson 2: Hydraulic Schematic Diagrams 

Lesson 3: Installing Hydraulic Components 

Lesson 4: Installing Piping and Tubes 

Lesson 5: Selecting Hydraulic Fluids 

Lesson 6: Planning System Maintenance 

Lesson 7: Troubleshooting Systems 

Lesson 8: Troubleshooting Valves 

Lesson 9: Troubleshooting Cylinders 

Lesson 10: Troubleshooting Pumps and Motors

Covers pneumatic systems, schematic symbols and diagrams, installing system components, planned maintenance, system diagnosis, and troubleshooting. Includes maintenance of air compressors, control valves, air motors, electrical components and hybrid systems.

Lesson 1: Pneumatic Systems 

Lesson 2: Pneumatic Schematic Diagrams 

Lesson 3: Installing of System Components 

Lesson 4: System Maintenance 

Lesson 5: Determining System Failures 

Lesson 6: Troubleshooting Air 

Lesson 7: Troubleshooting Control Valves 

Lesson 8: Troubleshooting Cylinders 

Lesson 9: Troubleshooting Air Motors 

Lesson 10: Pneumatic and Hydraulic System

Covers further details of Drives Maintenance, Including brakes, clutches, and adjustable-speed drives. Also covers maintenance and Troubleshooting of fluid drives and package drives.

Lesson 1: Mechanical Brakes and Clutches 

Lesson 2: Electric Brakes and Clutches 

Lesson 3: Adjustable-Speed Drives 

Lesson 4: Fluid Drives 

Lesson 5: Complete Drive Systems

Covers plain bearings, their parts, dimensions, functions, and relining techniques. Continues with installation and replacement of antifriction bearings. Also covers linear motion bearings and shaft seals.

Lesson 1: Plain Bearings 

Lesson 2: Installing Antifriction Bearings 

Lesson 3: Removing & Replacing Antifriction Bearings 

Lesson 4: Mounted Antifriction Bearings 

Lesson 5: Linear Motion Bearings and Shaft seals

Covers basic pumping concepts. Describes required maintenance of packing and seals. Covers maintenance and overhaul of centrifugal pumps. Concludes with maintenance of rotary pumps.

Lesson 1: Basic Pumping Concepts 

Lesson 2: Maintaining Packing and Seals 

Lesson 3: Maintaining Centrifugal Pumps 

Lesson 4: Overhauling Centrifugal Pumps 

Lesson 5: Maintaining Rotary Pumps

Covers components and terminology used in piping used in piping systems. Also covers terminology, measurement, and maintenance of threaded, welded and plastic piping systems. Explains the use of pipefitting accessories, supports, traps, filters and strainers and expansion joints.

Lesson 1: Piping Dimensions and Terminology 

Lesson 2: Threaded Piping Systems 

Lesson 3: Welded Piping Systems 

Lesson 4: Plastic Piping Systems 

Lesson 5: Pipefitting Accessories

Covers tubing specifications, materials and fittings. Explains procedures used for handling, bending, cutting and installing tubing. Gives basics of tubing in hydraulic systems. Describes hose systems and their functions. Concludes with gaskets, sealants, and adhesives.

Lesson 1: Tubing Fundamentals 

Lesson 2: Installing Tubing 

Lesson 3: Hydraulic Tubing Systems 

Lesson 4: Hose Systems 

Lesson 5: Gaskets, Sealants, and Adhesives

Covers maintenance and operation of gate, globe, ball, plug, check, and special-purpose valves. Details actuators and various accessories. Explains valve selection based on application. Describes methods of protecting piping systems.

Lesson 1: Valve Maintenance 

Lesson 2: Special Valves 

Lesson 3: Actuators and Accessories 

Lesson 4: Valve Inspection 

Lesson 5: Piping System Protection

Covers the welding of ferrous and nonferrous metals. Describes oxygen cutting as well as brazing and soldering. Discusses surfacing techniques.

Lesson 1: Welding Ferrous Metals 

Lesson 2: Welding Nonferrous Metals 

Lesson 3: Oxygen Cutting 

Lesson 4: Brazing and Soldering 

Lesson 5: Surfacing Techniques