After completing this course, the licensee should be able to:
• Name the parts that make up the power end of a reciprocating pump and describe their operation.
• Define the terms single-acting pump and double‐acting pump when given the piston ratio and motor air supply.
• Explain how the pumped fluid lubricates a reciprocating pump.
• Calculate the discharge pressure of an air-driven pump
• Compare simplex and duplex pumps
• Tell what pumps are used for metering applications.
• Describe metering pump lubrication techniques.
• Name the parts of a diaphragm metering pump and state the function of each.
• Explain the operation of a diaphragm metering pump.
• Describe the operation of a flexible-tube pump.
• Give an application for a progressing-cavity pump.
• Name one disadvantage of a sealless magnetic- drive pump.
• Explain how to prepare a new centrifugal pump for operation.
• Tell which parts of a reciprocating slurry pump require the most maintenance.
• Tell why slight leakage through shaft seals is necessary.
• Name the type of stuffing box required for pumps operating under suction lift conditions.
• Give a typical application each for cotton, Teflon® and aluminum packing.
• Describe the procedure for replacing pump packing.
• Describe a packingless seal.
• Name three types of antifriction bearings.
• Name three factors to consider when preparing pump lubrication schedules.
• Describe a typical application for both felt and synthetic bearing seals.
• Tell the two major maintenance problems encountered in rotary pumps.
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- Approved By: Arkansas Department of Health
Ralph Stevens is a water Subject Matter Expert, licensed in California, Nevada and Arizona as a Grade 3 Wastewater Treatment Plant Operator. Ralph has worked in wastewater for almost 50 years, starting as an operator in a wastewater treatment plant and serving most recently as the Maintenance Reliability Supervisor for the Clark County Water Reclamation District. He is a certified Class Trainer for the California Water Environment Association (CWEA) and has served as the Operations and Maintenance Chairperson for the same organization. He has won a number of awards for his work, including CWEA Electrical and Instrumentation Person of the Year (2015), Safety Plant of the Year (2017), and the WEF Burke Safety Award (2019). Ralph goes out of his way to help and protect staff and the environment.