thanks for info, will check on book--always great to have answers from fellow sailors.If you use a dockside pulp out, the macerator does not have to be on. It is used to empty the tank when in legal waters. The through hull valve for the macerator discharge must be open during the operation.
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If you use a dockside pump out, the macerator does not have to be on. It is used to empty the tank when in legal waters. The through hull valve for the macerator discharge must be open during the operation.
Geesh, I didn't notice the ambiguity! Thanks for pointing that out. Of course, I meant the through hull needed to be open when using the macerator to empty the tank. I should have added "and only when it is used to empty the tank". Good catch.It depends on the setup. If the macerating pump goes directly to the through hull and there is a separate hose to the deck pumpout then the thru hull for the macerating pump should not be open. That might release effluent into the water. The deck pumpout should work without the macerator through hull valve being open. That's how my set up is.