1. 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/ Timken Cup and cone
NDE Brg: 6580/ Timken Cup and cone

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

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

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