WAT 144 - Pump Overhaul and Repair

Credits: 4
Lecture Hours: 3
Lab Hours: 2
Practicum Hours: 0
Work Experience: 0
Course Type: Voc/Tech

1. Evaluate a gear-type positive displacement pump through disassembly, inspection, repair, and reassembly
2. Identify and list the types of gear pumps used in water and wastewater applications
3. Recognize the internal components of a gear pump and their functions
4. Explain the operation and principles of a gear pump in the context of water and wastewater systems
5. State the factors affecting the efficiency of gear pumps, including viscosity, speed, and pressure

2. Assess Vane-Type Positive Displacement Pumps

1. Evaluate a vane-type positive displacement pump through disassembly, inspection, repair, and reassembly
2. Identify and list the various types of vane pumps utilized in water and wastewater operations
3. Recognize the parts of a vane pump and their roles in operation
4. Explain the operational principles of a vane pump and its applications in treatment facilities
5. State the factors influencing the efficiency of vane pumps in practical scenarios

3. Determine Reciprocating Pumps

1. Evaluate a reciprocating pump through disassembly, inspection, and reassembly
2. Identify and list the types of reciprocating pumps used in the water and wastewater sector
3. Recognize the internal components of a reciprocating pump and their functions
4. Explain the operational principles of a reciprocating pump in treatment processes
5. State the factors affecting the efficiency of reciprocating pumps

4. Evaluate Special Service Pumps

1. Discuss various types and applications of special service pumps in water and wastewater systems, including diaphragm, submersible, and jet pumps
2. Evaluate diaphragm, submersible, and jet pumps through disassembly, inspection, repair, and reassembly
3. Identify the parts and functions of diaphragm, submersible, and jet pumps
4. Explain the operational principles of diaphragm, submersible, and jet pumps
5. State the factors affecting the efficiency of these specialized pumps

5. Analyze Packing and Mechanical Seal Systems

1. Assess packing and mechanical seal systems in water and wastewater pumps
2. Summarize the differences between packing and mechanical seal systems
3. List the advantages and disadvantages of mechanical seals and packing in pump applications
4. Discuss the principles of operation of mechanical seals
5. Identify precautions to be taken when replacing mechanical seals in pumps

6. Evaluate Centrifugal Pumps

1. Evaluate a centrifugal pump through disassembly, inspection, repair, reassembly, and alignment
2. Identify the parts of a centrifugal pump and explain its operation in water and wastewater applications
3. State the factors affecting the efficiency of a centrifugal pump, considering system requirements and conditions

7. Perform Pump Alignment and Troubleshooting

1. Calculate the amount of shims required for aligning a prime mover to a mechanical device in pump setups
2. Define key terms related to pump alignment, including “soft-foot,” angular misalignment, and parallel misalignment
3. Outline the four-step alignment process critical for ensuring optimal pump performance
4. Identify common pump failures and troubleshoot issues related to misalignment, cavitation, or improper installation

8. Examine Pump Performance and Energy Efficiency

1. Analyze pump curves to determine optimal operating conditions
2. Discuss methods for improving energy efficiency in pumping systems
3. Calculate the impact of head loss and flow rates on pump performance
4. Explain the role of variable frequency drives (VFDs) in optimizing pump operations