# Centrifugal Pumps Training

### 219-01 Introduction to Centrifugal Pumps

When you complete this lesson, you will be able describe the principle behind centrifugal pump construction and state the basic design and function of both single stage and multi-stage centrifugal pumps.

• Describe the principle behind the operation of a centrifugal pump
• Identify the basic components that comprise a single stage centrifugal pump
• State the difference between a radially split and axially split centrifugal pump design
• Explain the difference between single-suction and double-suction centrifugal pumps
• Describe what is meant by a multi-stage centrifugal pump

### 219-02 Centrifugal Pump Design

When you complete this lesson, you will be able to describe centrifugal pump designs and explain the role design plays in matching a pump to a process application.

• Explain the design of a volute pump casing
• Identify when diffuser rings are employed and describe where a volute would apply when diffuser rings are also employed
• State the difference between a solid casing and a split casing
• Describe the difference between an axially split and radially split casing
• List three primary purposes of a pump casing
• Identify four ways impellers can be classified
• State the purpose of a thrust bearing on a centrifugal pump
• State the purpose of a mechanical seal on a centrifugal pump

### 219-03 Centrifugal Pump Fundamentals

When you complete this lesson, you will be able to use appropriate terminology when discussing the selection and operation of centrifugal pumps.

• Define the following terms:
• Explain what is meant by the phrase “suction lift”
• Describe the relationship between head pressure and pump capacity
• Define net positive suction head
• Describe the relationship between pump cavitation and net positive suction head

### 219-04 Centrifugal Pump Operation and Maintenance, Part 1

When you complete this lesson, you will be able describe the basic start-up procedures used on single and multi-stage centrifugal pumps. In addition, you will be able to explain the basic inspections to be completed on operating centrifugal pumps during each shift.

• Identify basic pre-start checks and inspections to complete prior to starting a centrifugal pump
• Discuss additional checks required for large, multi-stage centrifugal pumps
• Describe what is meant by the phrase “priming a pump”
• State inspections conducted on an operating centrifugal pump
• Define the term “air bound pump” in reference to a centrifugal pump

### 219-05 Centrifugal Pump Operations and Maintenance, Part 2

When you complete this lesson, you will be able to Identify different types of pumps, recall pump operations and maintenance items, identify predictive maintenance concepts, and recall common pump operating problems.

• Identify types of pumps
• Recall best practices for pump maintenance
• Identify predictive/preventative maintenance items
• Recall common operating problems

### 219-08 Impellers and Wear Rings

When you complete this lesson, you will be able to describe the principles behind centrifugal pump mechanical impellers, pump stages, fluid flow paths, and basic information regarding wear rings.

• Describe the fundamentals of an impeller
• Identify the difference between single and multi-stage pumps
• State the difference between mechanical impeller types
• Explain the difference between single-suction and double-suction from modes
• Identify types of wear rings

### 219-10 Pump Troubleshooting

When you complete this lesson, you will be able to describe basic pump troubleshooting and identify pump visual, audible, and tangible symptoms of equipment malfunction.

• Recall fundamentals in pump troubleshooting
• Identify visual symptoms
• Identify audible symptoms
• Identify tangible symptoms

### 219-12 Pump Internal Inspection and Troubleshooting

When you complete this lesson, you will be able to describe an internal inspection of a centrifugal pump and identify unsatisfactory component conditions.

• Describe when a pump must be internally inspected
• Identify internal pump component inspectable items