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Seal frequent top up

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noer_nu

Mechanical
Mar 15, 2023
3
Hi all,
I have a centrifugal pump with seal plan 53B running parallel 2 pumps (Pump A and B)
During switch over from pump B to C, pump A still running but shaft movement changes from 0.2 to -0.1 and back to 0.2 again after successfully run pump C (current running pump A & C).
After that, seal DE has low pressure and had topped up for 7x in 8 hours.
Process parameters remain stable.

Anyone knows what the problem is, since the shaft movement back to normal but seal pressure not.

Thanks in advance
 
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