CENTURION ENZO 233- 2013 PNP BALLAST

[yam saar 0]

Hi All,

need your advise regards PNP draining issue...

i fill up the PNP X 2 ballast without any problem.. (first Starboard then Port by changing the Valve position).

Now .. when i wish draining those sacks the single  PNP PUMP working but there is no drain activity from BOTH sacks..

what need to be check??

thanks for your help

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