A centrifugal pump loses prime after starting. The reason of this trouble may be_____________________?
Correct answer: D. All A., B., and C.
- A. Incomplete priming
- B. Too high a suction lift
- C. Low available NPSH and air leaks in the suction pipe
- D. All A., B., and C.
Explanation
A centrifugal pump can lose prime through incomplete priming, excessive suction lift, or air entry and inadequate NPSH in the suction line. Since each listed condition can cause the problem, all are applicable.
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