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Old 14-02-2014, 17:31   #31
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Re: Troubleshooting Vacuflush

Thanks for posting that info Doug!
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Old 21-05-2015, 17:02   #32
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Re: Troubleshooting Vacuflush

Ok, no where to turn...pump wouldn't shut off: replaced duckbills, bowl is holding water, double hose clamps, felt suction of pump (so I assume bellow is good) replaced vaccuum tank (properly sealed fittings to tank and hoses....pump still is running.
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Old 21-05-2015, 18:11   #33
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Troubleshooting Vacuflush

If the pump is running intermittently it could be the gasket that the toilet sits on is allowing an air leak. Try tightening the bolts that hold the toilet down. By the way they should have lock washers on they so they don't vibrate loose.

If the pump is running continuously it could be the vacuum pump switch which is mounted on the vacuum accumulator tank.

I'm an amateur. I defer to Peggy Hall if she has a comment. I've had so few problems with my VacuFlush in 15 years I haven't had to learn much.

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Old 21-05-2015, 18:13   #34
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Re: Troubleshooting Vacuflush

Thanks for the reply.

The tank is brand new and came with a new switch...

I am scratching my head here.

How long does it need to run to create a vacuum?
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Old 21-05-2015, 18:15   #35
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Re: Troubleshooting Vacuflush

Quote:
Originally Posted by Cpt JCote View Post
Thanks for the reply.



The tank is brand new and came with a new switch...



I am scratching my head here.



How long does it need to run to create a vacuum?

Should only take about 60-90 seconds.


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Old 21-05-2015, 18:20   #36
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Re: Troubleshooting Vacuflush

I've let it run for a long while, more than 60-90 seconds. Still no vacuum
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Old 21-05-2015, 18:34   #37
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Troubleshooting Vacuflush

I assume you've tried turning it off, giving it a few minutes and with plenty of water in the bowl flushing again. It may be time to contact VacuFlush. Or a local authorized VacuFlush service person.


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Old 21-05-2015, 18:48   #38
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Re: Troubleshooting Vacuflush

Quote:
Originally Posted by Cpt JCote View Post
Ok, no where to turn...pump wouldn't shut off: replaced duckbills, bowl is holding water, double hose clamps, felt suction of pump (so I assume bellow is good) replaced vaccuum tank (properly sealed fittings to tank and hoses....pump still is running.
Questions:
How old is the system?
How long have you had a VacuFlush toilet on this or any previous boat? Several years, or is it a "new" system for you?

Did the trouble start before or after you replaced the duckbills? Why did you replace the vacuum tank? Is the pump running non-stop, or intermittently between flushes?

When you flush, are you adding water to the bowl ahead of solids and/or TP? How much? How long do you leave the pedal down?

When, if ever, have you flushed a full bowl of water--even two--through the system? Have you done that since the problem started?
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Old 22-05-2015, 03:31   #39
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Re: Troubleshooting Vacuflush

Quote:
Originally Posted by Cpt JCote View Post
Ok, no where to turn...pump wouldn't shut off: replaced duckbills, bowl is holding water, double hose clamps, felt suction of pump (so I assume bellow is good) replaced vaccuum tank (properly sealed fittings to tank and hoses....pump still is running.
If you can feel the pump sucking, the bowl is not leaking water, the new duckbills each side are pointing in the direction of flow and there are no other leaks from pipes or tank, vacuum in the system must become established.

The only reasons then that pump is not turning off (typically 10-20 cycles) is that one of the points above is not fulfilled or vacuum switch is faulty or not adjusted correctly.
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Old 22-05-2015, 07:36   #40
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Re: Troubleshooting Vacuflush

Quote:
Originally Posted by Cpt JCote View Post
Ok, no where to turn...pump wouldn't shut off: replaced duckbills, bowl is holding water, double hose clamps, felt suction of pump (so I assume bellow is good) replaced vaccuum tank (properly sealed fittings to tank and hoses....pump still is running.
I had the same problems and symptoms. I know this is frustrating but the system is simple and the problem will be solved. For me the issue was with the flush ball and bowl seal kit. I had to lift off the whole toilet and install those new parts. Problem solved for me.
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Old 26-06-2015, 15:18   #41
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Re: Troubleshooting Vacuflush

Similar issues: pump running every few minutes for 3 seconds. Duckbills and the switch on top if tank replaced but no help and bowl holds water.
What should I look into next ?
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Old 26-06-2015, 15:23   #42
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Re: Troubleshooting Vacuflush

At the toilet base, where it is bolted down, there is a gasket that functions like a wax ring for a toilet at home. I had to add lock washers and tighten the nuts on mine to prevent a vacuum loss below the bowl.


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Old 02-02-2017, 09:25   #43
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Re: Troubleshooting Vacuflush

Here is another scenario - I replaced duckbills to stop intermittent vacuum pumping, now vacuum pump runs nonstop, and head won't flush!

I leak-tested all pipe joints with shaving cream and there is no external leakage.

I removed new duckbills, and found obstruction holding valve open. I cleaned them, and see one duckbill is partly open (< 1mm) and will not close completely.

Please see attached photo. Should I replace the one on the right with a new one?

Thanks for your advice!


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Old 02-02-2017, 10:12   #44
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Re: Troubleshooting Vacuflush

Please see attached photo. Should I replace the one on the right with a new one?

Yes. And start putting more water through the system when you flush to rinse out the stuff that can prevent a duckbill from closing. Leave the pedal down (or your finger on the button if your system is new enough to have push button flush) at least 3 full seconds for urine only...add 1/3-1/2 bowl of water ahead of solids and/or TP, followed by flushing for 7-10 seconds depending on volume of solid waste. Use TP as sparingly as possible. At least a half bowl of clean water once a day will also help to prevent problems caused by "debris" stuck in the plumbing and pump.
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Old 02-02-2017, 10:47   #45
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Re: Troubleshooting Vacuflush

Btw...I've saved the V/Flush troubleshooting guide--which includes the probable causes and cures for just about any symptom it can develop as a freestanding PDF and have also written a piece I call "VacuFlush 101" that explains how it works (it's amazing how many people don't actually know) and how to keep it trouble-free. I'll be glad to send both to anyone who wants 'em...just send me a PM that includes your email address.

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