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Old 23-11-2020, 11:21   #1
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2007 Proline 29Express vacuflush problem

Has anyone ever worked on or removed a vacuflush mechanism from a 2007 Proline-29Express as would like any hints as it is in a very contained space under the helm station? It was suggested that I install a new toilet with the mechanism located in the base or just replace with a high end porta-potty as boat has only been used for day sailing. I would still like to get it out of its present location if possible as will use the existing holding tank if possible. Thanks in advance for any help in this crappy matter.
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Old 23-11-2020, 11:58   #2
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Re: 2007 Proline 29Express vacuflush problem

There's no reason why you can't remove the VacuFlush "works" and plumb a new toilet directly to the existing holding tank. Flush at least a gallon of clean water through it first...then it's just a matter of disconnecting hoses and removing bolts. There should be nothing left but the holding tank when you're done.


That's just the broad overview. I'll be glad to offer more detailed help if you'd like to send me a PM (private message) 'cuz I need answers to a few questions to get to the specifics.


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Old 23-11-2020, 13:38   #3
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Re: 2007 Proline 29Express vacuflush problem

Peg, yes we discussed the new toilet mech in the base, just asking as you said was not sure what that extra tank was for and just seeing if there was any other information out there as maybe somebody else had the same issue.
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Old 24-11-2020, 09:21   #4
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Re: 2007 Proline 29Express vacuflush problem

The Vacuflush is a well designed system.

My speculation is that issues exist leading to swap consideration.

Why not just resolve the problems and retain a properly working Vacuflush system?
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Old 24-11-2020, 09:49   #5
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Re: 2007 Proline 29Express vacuflush problem

The space where it exists is so limited as not sure I can even get the old one out to replace the plunger motor or to replace duck bill gaskets without cutting the unit out of there. Peggy also informed me that the costs to repair are not cheap and a new toilet/with enclosed mechanisms can be done with a lot less aggravation. The vacuflush is located under the helm station in a very tight space which I am sure they installed before they put the upper deck on. In looking at the unit, it would seem that many of the bolts or screws are inaccessible from above.

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Old 24-11-2020, 14:13   #6
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Re: 2007 Proline 29Express vacuflush problem

That's not a photo of your VacuFlush system, Jerry...that's your holding tank plus two more tanks--the one on top of your holding tank and the tall one at the left of it. I've never seen anything like it, nor do I have a clue what it might be. I'm only certain that it's separate from the VacuFlush TOILET system, which consists of either two separate components--a vacuum tank and a vacuum pump, or, more likely on your 2007 boat, a combination vacuum tank/pump called a vacuum generator. Everything after the vacuum pump or vacuum generator is separate from the toilet system.


Post the rest of the photos you sent me...maybe someone else can figure out what you have.



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Old 24-11-2020, 15:01   #7
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Re: 2007 Proline 29Express vacuflush problem

Quote:
Originally Posted by wingless View Post
The Vacuflush is a well designed system.

My speculation is that issues exist leading to swap consideration.

Why not just resolve the problems and retain a properly working Vacuflush system?
According to the owner's manual for the OP's boat, that boat has a Vacuflush system as standard, and the overboard discharge is optional.

An examination of that documentation, page 35, reveals that the vacuum generator should be behind the downward center hose in the OP's image, enlarged, enhanced and zoomed below. Hard to tell from this image.

My suggestion remains to just determine and fix the problem(s), instead of a wholesale swap out.



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Old 24-11-2020, 15:14   #8
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Re: 2007 Proline 29Express vacuflush problem

From the factory Owner's Manual, it looks like the boat is equipped with the optional overboard macerator discharge pump, but that macerator is positioned to the right of the center vertical hose in the OP's image, instead of to the left of the hose, as-shown in the manual.

Oh, welcome to the forum, BTW.
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Old 24-11-2020, 15:39   #9
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Re: 2007 Proline 29Express vacuflush problem

So, my speculations based on this OP image, that central vertical hose is the discharge hose, up to the deck plate pump out, with a tee to the right for the overboard discharge pump, the box on the right is the vacuum generator tank, connected somehow to the toilet, the vacuum pump is behind the center vertical discharge hose and the vacuum pump dumps into the bottom holding tank at the raised part on the left.
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Old 24-11-2020, 15:52   #10
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Re: 2007 Proline 29Express vacuflush problem

What problem(s) exist with the system? Has the system been pumped out? What diagnosis has been performed?
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Old 24-11-2020, 20:07   #11
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Re: 2007 Proline 29Express vacuflush problem

My suggestion remains to just determine and fix the problem(s), instead of a wholesale swap out.

Unless--as I strongly suspect it would--the cost to do that exceeds the cost of a new toilet that has its "works" in its pedestal instead of in an inaccessible location in the bilge.


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Old 25-11-2020, 05:01   #12
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Re: 2007 Proline 29Express vacuflush problem

Quote:
Originally Posted by no9tme6w View Post
Has anyone ever worked on or removed a vacuflush mechanism from a 2007 Proline-29Express as would like any hints as it is in a very contained space under the helm station?
My speculation is that the image of the vacuum generator / holding tank was obtained by removing a side panel from this berth, correct?



Are additional images showing the access?

What problem(s) exist with the system? Has the system been pumped out? What diagnosis has been performed?
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Old 25-11-2020, 06:27   #13
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Re: 2007 Proline 29Express vacuflush problem

An additional examination of the previously linked Owner's Manual (image shown below) shows that ambient daylight is illuminating the top of the Vacuflush holding tank, pump, macerator and vacuum generator tank.

Does access also exist from above, in addition to the side as shown by OP image included in the topic?

Note this Owner's Manual image apparently shows the waste hose from the toilet passing horizontally in front of the vertical pump out hose, entering the vacuum generator tank. The OP image is plumbed slightly differently.

One thing that doesn't look good from the OP image is the plumbing dip just prior to entering the vacuum generator tank. That dip should not exist as it will retain waste. Modify that aspect of the existing installation to eliminate the dip.





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Old 25-11-2020, 07:20   #14
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Re: 2007 Proline 29Express vacuflush problem

Compare all that with this vacuum generator schematic and parts list ( Note that it's a PDF, not a photo.) There is no extraneous vacuum tank...the vacuum pump sits on it.

There is no macerator in a VacuFlush and the holding tank is not a component in the VacuFlush toilet system.

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Old 25-11-2020, 08:36   #15
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Re: 2007 Proline 29Express vacuflush problem

The previously linked Proline 29 Express Owner's Manual details the macerator as an option. The OP image shows that the OP's boat has the optional Dometic TW-Series Macerator and Discharge Pump.

The Proline 29 Express connects that pump using a tee, instead of using it's own fitting, as-shown in these linked typical instructions.


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