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Comprehensive Pump Condition Evaluation for Optimal Performance

This guide provides an in-depth evaluation of pump conditions, focusing on key components such as bearings, pump shaft, bearing frame, rear cover, impeller, and pump case. It outlines critical parameters like vibration, end play, and run out checks that ensure the reliability of pump operations. Standards for Total Indicator Readings (TIR) are provided for bearings and shafts, emphasizing limits to prevent performance issues. Proper assessment is crucial, including methods to verify the perpendicularity of gland bosses and proper fit for optimal operation. Prioritize maintenance to enhance pump life and efficiency.

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Comprehensive Pump Condition Evaluation for Optimal Performance

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  1. PUMP CONDITION EVALUATION

  2. PUMP CONDITION EVALUATION • BEARINGS • PUMP SHAFT • BEARING FRAME • REAR COVER • IMPELLER • PUMP CASE

  3. PUMP CONDITION EVALUATION • BEARINGS • Vibration - Imperfections on rollers/balls will cause seal face “chatter” • End Play - Closing force on the seal faces will vary • Run Out • Seal faces will not run in a concentric path • Seal faces will not run parallel • Vibration will occur

  4. CHECKING BEARING RELATED END PLAY Total Indicator Reading should not exceed .010”

  5. CHECKING BEARING RELATED END PLAY “TIR” should not exceed .010”

  6. CHECKING BEARING RELATED RUN OUT TIR should not exceed .002”

  7. CHECKING BEARING RELATED RUN OUT “TIR” should not exceed .002”

  8. PUMP CONDITION EVALUATION • PUMP SHAFT • Bent Shaft • Run Out • Vibration • Bearing Fits • Run Out • End Play • Shaft Sleeve Fit - Run Out • Impeller Thread/Fit - Vibration

  9. 6” = TIR max of .003 CHECKING SHAFT RELATED RUN OUT “TIR” should not exceed .001” per 2” distance from bearing

  10. 3” = TIR .0015 CHECKING SHAFT RELATED RUN OUT TIR should not exceed .001” per 2” distance from bearing

  11. PUMP CONDITION EVALUATION • BEARING FRAME • Outboard Bearing Housing fit in Frame • Bearing Fits • Run Out • Bearing Spin • Vibration

  12. PUMP CONDITION EVALUATION • REAR COVER • Seal chamber / Gland fit - Gland Boss must be perpendicular to the pump shaft • Imperfections or wear on the impeller side of the rear cover will effect the performance of pump out vanes which in turn, effects seal chamber conditions • Stuffing box pressure • fluid turbulence

  13. CHECKING GLAND BOSS FOR PERPENDICULARITY “TIR” should not exceed .005” up to 5” Dia. (+.001"/in. >5”)

  14. PUMP CONDITION EVALUATION • IMPELLER & PUMP CASE • Excessive wear will effect pump performance which will effect stuffing box conditions • Impeller fit on shaft must be true • With open impeller pumps, proper impeller / case clearance is a must for optimum pump performance and must be done before installing a new seal

  15. ENDPUMP CONDITION EVALUATION

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