COURSE OBJECTIVES

The course is designed for engineers, supervisors and technicians involved in centrifugal pumps maintenance and operation. Participants will understand pump technology and performance. Participants will be able to determine different types of seals and bearings and their problems. It provides in-depth understanding of pump maintenance and overhauling procedures. Participants will practice hands-on inspection and measurements of pump parts. All participants will disassemble and assemble the pump for complete overhaul and report the pump condition before and after overhauling, with emphasis on practical hands-on parts inspection using the modern maintenance techniques and troubleshooting real-life examples.

Who Should Attend?

  • Maintenance, Technical support Engineers and Supervisors.

COURSE OUTLINE

Introduction

Pump Classifications

  • Dynamic pumps
  • Positive displacement pumps

Centrifugal Pump Design

  • Fluid concepts and velocity triangles
  • Head and capacity calculation
  • NPSH
  • Specific sped

Pump Performance

  • Pump characteristics
  • Head capacity curve and operating point
  • Effects of pump speed, impeller diameter and operating conditions
  • Series and parallel operation and system head curves

Pump Construction

  • Casing types
  • Impeller/rotor
  • Casing and impeller wear rings
  • Seals and packing
  • Bearings and lubrication

Pump Operation

  • Start-up and shutdown conditions
  • Minimum flow operation
  • Off-design operation

Pump Maintenance

  • General maintenance procedure
  • Preparation for pump maintenance work
  • Checks before dismantling
  • Disassembly procedures
  • Removal of coupling
  • Dismantling of seals
  • Dismantling of bearings
  • Removal of rotor/impeller
  • Remove of casing and impeller wear rings
  • Parts Inspection, measuring and Repair or replacement
  • Precision Assembly Techniques
  • Installation procedure
  • Installation of shaft seals and packing
  • Installation of bearings
  • Check and set of clearances and axial play
  • Assembly errors
  • Proper fitting of shafts and bores
  • Proper set screw assembly
  • Effects of non-square faces
  • Care in assembly of couplings

Typical Pump Problems And Troubleshooting

  • Cavitations
  • Liquid circulation
  • Vibration
  • Excessive power consumption
  • Failure analysis and troubleshooting
  • Seals and bearings common troubles

Specifications And Selection Techniques

Pumps Maintenance Strategy

Case Studies And Workshop

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