Pump problems Pump details:

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Pump problems Pump details: The pump barrel is noisy with some rub sound on pump DE. Pump details: Pump Model: Warman Wet End - 10/8E –MW Pump type: Centrifugal No. of impeller blades: 4 (closed vanes) Pump rpm = 1000 DE Brg: 6580/ 6535 - Timken Cup and cone NDE Brg: 6580/ 6535 - Timken Cup and cone

Fig 1: Spectrum showing high multiples of blade pass frequency indicating possible flow related problems.

Fig 2: Four stacked spectrums showing change of BPF and its harmonics

Fig 3: Time wave form plot showing impacts at blade pass frequency.