Certified Water/Wastewater Maintenance Technician II (CWWMT-II)

Test Content & Lesson Curriculum

Unit 417	Welding Principles – Covers fundamentals of welding, discusses welding safety considerations and precautions. Covers both oxyfuel and arc welding equipment. Describes welding techniques and symbols. Discusses ways to avoid weld faults.
	Lesson 1: Fundamentals of Welding Lesson 2: Welding Safety Lesson 3: Oxyfuel Welding Equipment Lesson 4: Arc Welding Equipment Lesson 5: Welding Techniques Lesson 6: Avoiding Weld Faults Lesson 7: Welding Symbols
Unit 201	Understanding Basic Electricity and Electronics – Introduces electron theory, static electricity, electrons in motion, and magnetism. Covers basic methods of measuring current, voltage and resistance. Explains circuit components: conductors, insulators, resistors, capacitors, and simple Ohm’s Law calculations for DC and AC circuits.
	Lesson 1: Introduction to Electricity Lesson 2: Static Electricity Lesson 3: Current Electricity Lesson 4: Magnetism Lesson 5: Current, Resistance and Potential Difference Lesson 6: Electrical Components Lesson 7: Conductors Lesson 8: DC Circuits Lesson 9: AC Circuits Lesson 10: Electronics
Unit 207	Operating and Maintaining Single Phase Motors – Covers the types and operating principles of common single-phase motors. Explains NEMA motor standards. Explains how to identify motor leads on split phase, capacitor-start, capacitor-run, permanent split capacitor, and repulsion motors. Also covers universal motors, shaded pole motors, and other special types, including synchro and servo systems. Gives general maintenance procedures on all single-phase motors.
	Lesson 1: Introduction to Single Phase Motors Lesson 2: Split-Phase Motors Lesson 3: Capacitor Motors Lesson 4: Repulsion Motors Lesson 5: Universal Motors Lesson 6: Special Motors Lesson 7: Synchros Lesson 8: Servos Lesson 9: Motor Installation Lesson 10: Motor Maintenance
Unit 301	Understanding Basic Mechanics – Covers force and motion, work and energy, and fluid mechanics as applied in industrial maintenance. Explains principles of operation for simple machines, such as the lever, inclined plane, wheel and axle, pulley, and screw. Explains the basic elements of industrial machines, as well as common measurement tools used to monitor and adjust equipment. Covers hand tools, power tools and fasteners, ending with a discussion of ways to reduce friction and wear.
	Lesson 1: Force and Motion Lesson 2: Work, Energy, and Power Lesson 3: Fluid Mechanics Lesson 4: Spimle Machines Lesson 5: Machine Elements Lesson 6: Measuring Tools and Instruments Lesson 7: The Safe Use of Hand Tools Lesson 8: The Safe Use of Portable Power Tools Lesson 9: Fasteners Lesson 10: Friction and Wear
Unit 302	Lubricants and Lubrication – Covers a complete lubrication program, including functions and characteristics of lubricants, and effects of additives. Oils, greases, and other compounds used for lubrication are described, as well as their applications. Lubrication methods and recommended storage and handling procedures are included.
	Lesson 1: Principles of Lubrication Lesson 2: Lubricant Characteristics Lesson 3: Additives, Lubricating Action, and Bearing Lubrication Lesson 4: Oils and Their Applications Lesson 5: General-Purpose Grease Lesson 6: Special-Purpose Greases and Dry Film Lubricants Lesson 7: Lubrication Systems and Methods Lesson 8: Automatic Lubrication Methods Lesson 9: Lubrication Storage and Handling Lesson 10: Lubrication Management
Unit 304	Selecting & Maintaining Bearings – Covers principles and applications of various types of bearings, including plain journal, ball, and roller bearings. Explains installation, inspection and repair of bearings. Deals with specialized bearings, including powdered-metal, nonmetallic, and hydrostatic bearings. Covers bearings, seals, lubrication, and maintenance practices.
	Lesson 1: Bearings and Shafts Lesson 2: Plain Journal Bearings I Lesson 3: Plain Journal Bearings II Lesson 4: Antifriction Bearings I Lesson 5: Antifriction Bearings II Lesson 6: Ball and Roller Bearings Lesson 7: Specialized Bearings Lesson 8: Carbon Lesson 9: Lubrication Lesson 10: Bearing Maintenance
Unit 303.1	Power Transmission Equipment – Covers belt drives, chain drives, gears and gear drives, adjustable-speed drives, shaft alignment, shaft coupling devices, and clutches and brakes.
	Lesson 1: Belt Drives Lesson 2: Chain Drives Lesson 3: Gears Lesson 4: Gears Drives Lesson 5: Adjustable-Speed Drives Lesson 6: Shaft Alignment Lesson 7: Shaft Coupling Devices Lesson 8: Clutches and Brakes
Unit 306	Piping Systems – Covers piping and tubing systems used for fluid transport in the plant: hydraulic fluid, steam, liquefied product, refrigerant, and water. Shows typical metallic and nonmetallic piping systems, pipe joining methods, and how tubing and hoses differ from piping. Covers valves, pipe fittings, hangers, supports, and insulation, and shows how tubing is sized, fitted, bent, and joined.
	Lesson 1: Introduction to Piping Systems Lesson 2: Metal Pipe Lesson 3: Nonmetal Pipe Lesson 4: Tubing Lesson 5: Hoses Lesson 6: Fittings Lesson 7: Common Valves Lesson 8: Specialized Valves Lesson 9: Strainers, Filters and Traps Lesson 10: Accessories
Unit 307	Understanding Basic Hydraulics – Covers hydraulic principles, types of hydraulic fluids and their characteristics. Describes components of the hydraulic system and their functions, including: filters, piping, strainers, reservoirs, accumulators, pumps, piping, tubing, and hoses, control valves, relief valve, and actuating devices.
	Lesson 1: Principles of Hydraulics Lesson 2: Hydraulic Fluid Lesson 3: Strainers and Filters Lesson 4: Reservoirs and Accumulators Lesson 5: Hydraulic Pumps Lesson 6: Tubing and Fittings Lesson 7: Directional Control Valves Lesson 8: Pressure Control Valves Lesson 9: Cylinders Lesson 10: Hydraulic Motors
Unit 309	Understanding Basic Pneumatics – Covers how work, force and energy are applied to principles of pneumatics. Shows operating principles of reciprocating, positive displacement, rotary, and dynamic air compressors. Covers primary and secondary air treatment. Includes valves, logic devices, cylinders, and air motors.
	Lesson 1: Pneumatic Principles Lesson 2: Reciprocating Compressors Lesson 3: Rotary Compressors Lesson 4: Primary Air Treatment Lesson 5: Secondary Air Treatment Lesson 6: Piping, Hoses, and Fittings Lesson 7: Directional Control Valves Lesson 8: Pressure Control Valves Lesson 9: Pneumatic Cylinders Lesson 10: Pneumatic Motors and Rotary Actuators
Unit 318	Industrial Rigging Principles and Practices – Covers techniques and safeguards in the use of rope, chain, hoists, and scaffolding when moving heavy plant equipment and maintaining plant utilities.
	Lesson 1: Introduction to Industrial Rigging Lesson 2: Wire Rope and Wire Rope Slings Lesson 3: Chain and Wire Mesh Slings Lesson 4: Fiber Rope and Webbing Slings Lesson 5: Industrial Hoists and Cranes Lesson 6: Operating Practices Lesson 7: Scaffolds and Ladders
Unit 341	Maintenance of Mechanical Drives – Covers alignment, particularly coupling alignment. Includes installation and maintenance of mechanical drives, from chain drives to enclosed gear drives.
	Lesson 1: Chain Drives Lesson 2: Belt Drives Lesson 3: Open Gear Drives Lesson 4: Enclosed Gear Drives Lesson 5: Drive Couplings
Unit 305	Pumps – Identifies the basic components of pumps and pump processes used in water/wastewater systems. Provides an overview of basic pump operation and maintenance, components, centrifugal pumps, and positive displacement pumps.
	Lesson 1: Pump Development & Application Lesson 2: Basic Pump hydraulics Lesson 3: End-Suction Centrifugal Pumps Lesson 4: Propeller & Turbine Pumps Lesson 5: Rotary Pumps Lesson 8: Special-Purpose Pumps Lesson 9: Packing & Seals Lesson 10: Pump Maintenance