Page 248 - Know and Understand Centrifugal Pumps
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Common Sense Failure Analysis
Source of Problem Suggested CauselRemedy
8. System problem. Wrong rotation
9. System problem. Low speed
IO. System problem. Insufficient liquid supply
11. System problem. Excessive discharge pressu relresista nce
12. System problem. Grit or dirt in liquid.
13. System problem. Pump running dry
14. System problem. Viscosity of liquid being pumped is higher
than specified.
15. System problem. Obstruction in the discharge line
16. Mechanical problems. Unbalanced or misaligned coupling.
17. Mechanical problems. Bent motor shaft
18. Mechanical problems. Chattering relief valve
19. Mechanical problems. Pipe strain distorting the pump casing.
20. Mechanical problems. Air aspiration thru the packing/seal.
21. Mechanical problems. Inadequate relief valve.
22. Mechanical problems. Packing is too tight.
23. Mechanical problems. Corrosion.
I Oh yes, 'Comm on Sense Maintenance' is likely to be the title of our next book.
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