A54 seawater pump for anchor washing

Gregory Dmitriev

Hi guys!
got some problems with subj.
It starts to work but in a few seconds the circuit breaker cuts the line.
I asume there is a kind of shortcut in the motor, 
so decided to change for a something new.

Who knows the purpose of non return valve
between seawater intake and the pump?
I don’t see any reason to install it...
Any considerations?


TERRAL, A54-172

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