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Old 08-09-2022, 03:39 PM   #1
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Jabsco 37010 "Quiet Flush" -- Recirculating water???!

I have a Jabsco 37010-3092 "Quiet Flush" compact electric toilet installed in my aft head.

The head uses sea water for flushing. The "sea water" in the marina is pretty nasty, and results in "unpleasant" smells... Thus, I've closed the thru-hull, and use a cup to pour tap water into the bowl, using only the "dry flush" option on the toilet.

I've noticed that when I get the tank pumped out, and pour in the typical blue chemical treatment - that I see blue water coming down from the rim of the bowl after the next several flushes!

Is the toilet supposed to do some amount of "recirculation" to save water - or do I just have a broken toilet? Or is this a result of not allowing sea water to be used?

Has anyone observed recirculation in their head when flushing the brightly colored holding tank chemicals?

Thanks!
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Old 08-09-2022, 04:54 PM   #2
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No, it should not recirculate. It's not a result of flushing by adding water to the bowl with a cup. Anything coming into the bowl via the channel in the rim has be coming in via the intake line. Is there a cartridge in that line with chemical in it (which can be blue or green) that's supposed to eliminate the odor from dead and decaying micro or not-so-micro sea life. If not, I'm guessing you have a broken toilet. How old is it?


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Old 08-09-2022, 05:07 PM   #3
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Peggie,

The toilets were replaced by a previous owner - not sure if it was one or two owners ago. They don't appear to be terribly old.

I did notice that it looks like the forward toilet is plumbed with: inlet thru-hull goes to pump and solenoid, then to toilet. On the aft toilet, it looks like the thru-hull goes to the pump, with no solenoid.

From looking at the Jabsco documentation a while back (and I may have gotten this wrong...) - it looked like that toilet has a single motor that drives both the macerator to expel stuff, and also the impeller/pump to bring in liquid and pump it through the rim.

I had been hopeful that if I disconnected the wire from the control panel that activates the water pump, that I wouldn't get any sea water in the bowl. That doesn't appear to be the case (at least certainly not on the aft head that is missing the solenoid). Looks like the macerator still sucks water in past the water pump, even if the water pump isn't turned on... Can that be?
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Old 08-09-2022, 09:13 PM   #4
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First, the Jabsco 37010 is not a "Quiet Flush" toilet..it's Jabsco's basic macerating electric toilet. It's a sea water toilet that does not have nor need a solenoid valve--solenoid valves are only needed with toilets designed to use onboard pressurized fresh water. They're wired to the flush button and function like a sink faucet to allow or block flush water. However it may need a vented loop in the intake line if the toilet is installed at or below waterline, but ONLY if installed at or below waterline...none is needed if the toilet is above waterline.

The 37010 does have a single motor that powers the pump assembly connected to it. The intake and discharge "pumps" are actually just two impellers...part #27 in the exploded drawing on page 3 in the documentation is the intake "pump" (flexible impeller) that pulls flush water in...part #16 is the discharge "pump("centrifugal impeller) that pushes bowl contents out. The macerator is just a blender-like blade that Jabsco calls a "chopper plate (part #14) that's just ahead of the discharge impeller that purees solids and TP.

I have no idea which wire you disconnected, but as long as the motor runs, the intake impeller will pull in at least some water. There's only one way to stop incoming flow: close the intake thru-hull...which is not a good idea because that will cause the intake impeller to run dry, which will "fry it."

If a solenoid valve was installed when you bought the boat, it had to have been done by a PO who plumbed it use pressurized fresh water...bad idea because sea water toilets do not have the built-in protections--backflow preventer, anti-siphon device and a couple of other things that prevent bacteria from the bowl from contaminating your fresh water supply, and also because sea water toilets are designed to PULL flush water in...pressurized flush water PUSHES it through the pump assembly, which can negatively impact component alignment.

So I hate to break it to you, but if you want to flush with fresh water, your only choice is a toilet designed to use it. I checked to see if Jabsco offers a pump/motor assembly "conversion"...they do, but the best price I could find is barely $100 less than the complete toilet and for those prices you could upgrade to a Raritan Marine Elegance Raritan Marine_Elegance Promo.pdf or their SeaEra QC Raritan SeaEra QC if the Elegance won't fit your space.

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Old 08-09-2022, 10:32 PM   #5
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I agree completely with the Marine Elegance head. They are great.
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Old 08-10-2022, 04:56 AM   #6
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The Jabsco has one seal that separates the seawater side of the pump and the waste side. If there is excessive back pressure on the waste hose to the holding tank then this seal will prematurely fail. The waste then gets forced into the seawater side and comes out of the bowl rim.
Check that the outlet hose to tank is clear. There is a rebuild kit for the toilet if you want to go that route. We went new Marine Elegance fresh water flush. No more smell.
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Old 08-10-2022, 07:45 AM   #7
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A raw water flush head can be converted to freshwater flush using the Jabsco anti-syphon/solenoid valve depicted in the link. I used it on two older Raritan units. Locate it above the rim of the bowl for safety. The valve is sensitive to debris in freshwater lines, but it's also simple to remove and clean (once in 15 years). I removed the raw water intake pumps as they are the primary noise makers. BoatID has the valve @ $166. The price was $74 fifteen years ago...

https://www.bing.com/aclk?ld=e8OedlO...31&ntb=1&ntb=1
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Old 08-10-2022, 11:08 AM   #8
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A raw water flush head can be converted to freshwater flush using the Jabsco anti-syphon/solenoid valve depicted in the link. I used it on two older Raritan units. Locate it above the rim of the bowl for safety. The valve is sensitive to debris in freshwater lines, but it's also simple to remove and clean (once in 15 years). I removed the raw water intake pumps as they are the primary noise makers. BoatID has the valve @ $166. The price was $74 fifteen years ago...

https://www.bing.com/aclk?ld=e8OedlO...31&ntb=1&ntb=1
Yes, but it still is a Jabsco Quiet Flush (not quiet). Bite the bullet and get a Marine Elegance. And be done with the problems.
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Old 08-10-2022, 01:48 PM   #9
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....just responding to an earlier post that says it's not possible to convert a raw water flush unit.
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Old 08-10-2022, 02:50 PM   #10
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....just responding to an earlier post that says it's not possible to convert a raw water flush unit.
I also converted a Jabsco to fresh water flush. Without the water impeller it is extremely quiet.
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Old 08-10-2022, 03:55 PM   #11
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I also converted a Jabsco to fresh water flush. Without the water impeller it is extremely quiet.
That would be nice. We had a Quiet Flush that would wake the dead in a previous boat. I never wanted another one.
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Old 08-10-2022, 08:29 PM   #12
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The Admiral wants to get rid of the electric head and get a manual head. She had manual heads on her previous boat, and liked them. Her experience using a cup to add water instead of pumping in sea water went well.

Is it reasonable to install a manual head, plug the inlet hose, and just assume the user will always manually add water?

The admiral's argument against a Marine Elegance (aside from $$) is that they consume electric power and water. If we ever get out on the hook for an extended period, both of those would be limited.
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Old 08-10-2022, 08:37 PM   #13
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The Admiral wants to get rid of the electric head and get a manual head. She had manual heads on her previous boat, and liked them. Her experience using a cup to add water instead of pumping in sea water went well.

Is it reasonable to install a manual head, plug the inlet hose, and just assume the user will always manually add water?

The admiral's argument against a Marine Elegance (aside from $$) is that they consume electric power and water. If we ever get out on the hook for an extended period, both of those would be limited.
With an appropriate intake pump a marine elegance can be configured for raw water flush. Power use for an electric head is minimal so I wouldn't worry about that part.
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Old 08-10-2022, 09:42 PM   #14
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The Quiet Flush is near silent compared to the 37010 which, used late at night, has the ability to awaken an entire mooring field.
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Old 08-12-2022, 09:40 AM   #15
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The Quiet Flush is near silent compared to the 37010 which, used late at night, has the ability to awaken an entire mooring field.
AAAAAOOOOOGGGGGAAAAA!!! AAAAAOOOOOGGGGGAAAAA!!! Dive! Dive!
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Old 08-12-2022, 10:08 AM   #16
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....just responding to an earlier post that says it's not possible to convert a raw water flush unit.
I didn't say it's not possible...I said it should not be done. Every toilet mfr specifically warns against it in their installation instructions.

Just rerouting the intake line to tee into a fresh water line using a solenoid valve w/vented loop doesn't actually "convert" it. That would also require installing a back flow preventer, without which there's nothing to prevent flush water from migrating into the into the fresh water plumbing when the water pump is off, not keeping it pressurized.

There are 3 way to do anything...the right way, the wrong way and what some guy has gotten away with for 20 years and will continue to do so as long as his luck holds out.

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Old 08-13-2022, 06:03 PM   #17
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When I converted mine, I did it exactly like the instructions showed for the Sea Era I installed in the other head. Solenoid valve, backflow preventer at the right height,etc.
It was done correctly
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Old 08-13-2022, 06:35 PM   #18
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When I converted mine, I did it exactly like the instructions showed for the Sea Era I installed in the other head. Solenoid valve, backflow preventer at the right height,etc.
It was done correctly
Likewise.
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Old 08-13-2022, 10:11 PM   #19
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The admiral's argument against a Marine Elegance (aside from $$) is that they consume electric power and water. If we ever get out on the hook for an extended period, both of those would be limited.
If you're on the hook, you're probably in an NDZ and your stay is limited by holding tank capacity. Guessing your fresh water supply vastly exceeds your holding tank. Power is not an issue. Shouldn't need to flush for more than 8 sec. 3 or 4 times a day.

If it's yellow let it mellow. If it's brown flush it down.
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Old 08-13-2022, 11:05 PM   #20
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The ME can be programmed to use very little water. It also doesnít use a whole lot of power. As said above only a few times a day. In the scheme of things it isnít much water or power.
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