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