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Macerator not discharging waste

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Old 06-10-2008, 12:28 AM
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Default Macerator not discharging waste

The Formula dealer said everything checks out with the Vacuflush system but I haven't been able to empty the tank with the Macerator. I opened the seacock (discharge) and moved the "Y" valve to the Macerator. Do I need to flush the toilet while depressing the Macerator button?
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Old 06-10-2008, 07:20 AM
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My last boat had this set up...and yes in order for the macerator to work I had to power down the vacuflush and flush it to release all pressure before firing up the macerator.
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Old 06-12-2008, 02:43 AM
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Wrong type of pump!!!

If you have a Dometic "Vacuflush" you have to use a diaphram type discharge pump not a macerator. A macerator cannot pull against a vacuum. Also remember the discharge pump and the vacuum pump look almost alike but are not interchangeable. The inlet and outlet ports of the pump are threaded backwards of each other. One has left hand threads one has right hand.

Last edited by 29Firefox; 07-12-2008 at 03:26 AM.
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Old 06-12-2008, 07:18 AM
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That stinks. Hope you figure it out.
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Old 06-16-2008, 05:19 AM
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Vacuflush File

Here is the link for how the discharge is supposed to be set up for a Vacuflush unit. If this isn't the exact model poke around others are available. Download the PDF parts file. It will break everything down for you.

http://www.sealandtechnology.com/pro...ges.asp?pid=17

Last edited by 29Firefox; 07-12-2008 at 03:24 AM.
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