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Old 06-13-2015, 07:38 AM   #1
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vacuflush

I have vacuflush that leaks air from the ball valve some of the time is it hard to replace the seal.
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Old 06-13-2015, 07:45 AM   #2
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I have vacuflush that leaks air from the ball valve some of the time is it hard to replace the seal.
No it's not hard the change the seal. But first try to clean the lip of the seal. Sealand makes tool for that. But you can use an old tooth brush or a scuffy pad to scrub the seal lip clean.
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Old 06-13-2015, 07:48 AM   #3
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thanks

Did not think of that. Will try it
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Old 06-13-2015, 07:48 AM   #4
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Get the manual if you don't have it. It's actually pretty good.


But, no it's not hard to change. Just remember to shut off the fresh water feed to the unit.
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Old 06-13-2015, 07:57 AM   #5
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Clean it, then apply some silicon grease. This will solve the issue 90%+ of the time. Make sure when flushing to release the pedal from the bottom of the stroke so it snaps up hard.
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Old 06-13-2015, 09:18 AM   #6
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I did that cleaning procedure and applied petroleum jelly to the seal and reapply every 3 months. So far it has worked perfectly.
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Old 06-13-2015, 10:21 AM   #7
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Uploaded a trouble shooting guide to the library, just waiting for approval.
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Old 06-13-2015, 10:57 AM   #8
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Uploaded a trouble shooting guide to the library, just waiting for approval.
Done, thanks for the contribution!
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Old 06-13-2015, 11:05 AM   #9
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Easy peesy.
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Old 06-13-2015, 12:50 PM   #10
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Make sure when flushing to release the pedal from the bottom of the stroke so it snaps up hard.
I know that is the recommended way to do it, but it sure goes against the grain!
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Old 06-13-2015, 01:09 PM   #11
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In an emergency vegetable oil works too.
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Old 06-13-2015, 02:40 PM   #12
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I let the peddle quickly but I don't let it snap up. Did it once or twice by accident and it scared me.
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Old 06-13-2015, 06:53 PM   #13
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Gotta snap it and overcome fear. Silicon grease lasts a long long time. Just a schmear not a glop. I did the clean and grease thing maybe twice on the two heavy use heads in almost 6 years of year round live aboard.
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Old 06-13-2015, 06:58 PM   #14
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Let it snap up..in fact the directions (not that anyone ever bothers to read 'em) tell you to let it go to snap back into place. That's because it's spring loaded for a reason: to let the dome snap back into place hard enough to seal. Never allowing that to happen leads to an air leak in the bowl that can only be cured by replacing that assembly.
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Old 06-13-2015, 10:59 PM   #15
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Are you loosing water out of the bowl? That is the first sign that the bowl seal is leaking. If you are not loosing water out of the bowl then it's not the seal between the ball and the bowl.

You really cannot diagnose properly your system without a vacuum gauge. Doing anything without that is like throwing darts in a blacked out room and expecting to be on target!

On Waypoint our vacuflush system will hold vacuum over a weekend when the pump is turned off. It can be done and they are really reliable units. Just have to be willing to put in the time to install everything correctly!

Did I mention that without a vacuum gauge your really shooting in the dark?
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Old 06-13-2015, 11:06 PM   #16
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leaking

It's at the ball valve losing water and can hear the leak seals sometimes will clean when I get off work on tue thanks for info
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Old 06-13-2015, 11:14 PM   #17
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Are you loosing water out of the bowl? That is the first sign that the bowl seal is leaking. If you are not loosing water out of the bowl then it's not the seal between the ball and the bowl.

You really cannot diagnose properly your system without a vacuum gauge. Doing anything without that is like throwing darts in a blacked out room and expecting to be on target!

On Waypoint our vacuflush system will hold vacuum over a weekend when the pump is turned off. It can be done and they are really reliable units. Just have to be willing to put in the time to install everything correctly!

Did I mention that without a vacuum gauge your really shooting in the dark?

Regarding the vacume gauge

How are you utilizing it? Do you have a 1.5" fitting you put over the port on the vacume generator to isolate the problem to the generator or the head?

Thanks!!
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Old 06-14-2015, 12:12 AM   #18
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Here is a link to the gauge. DOMETIC 318530002 - Dometic Corporation VACUUM TESTER GAUGE 318530002 - Boaters Plus

Best to use it by starting at the toilet. Turn off the water. Open the ball valve and lock it open. If you have a newer style toilet it has a latch that will keep the ball open. If you have an older style use a toilet bowl brush to hold it open. Hold open the ball, insert the gauge seal and let the hose pass through the brush bristles.

By placing the sealing device at the end of the gauge hose into the exit hole you can determine if it is leaking inside the bowl or between the bowl outlet and the pump. The standard for vacuum is specified in the instructions that come with the gauge. The seal will also close up the end of 1 1/2" hose also.

Once you work out where it is leaking then you can repair or replace what is needed. I once thought the specifications from Dometic were ridiculous but Waypoints system holds vacuum long past the factory specs.
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Old 06-14-2015, 01:28 AM   #19
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Using shaving cream to find leaks works very well.
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Old 06-14-2015, 02:55 AM   #20
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Quote:
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In an emergency vegetable oil works too.
It certainly helped me get my electric TMV macerator unstuck. Now I put a slush of it down every time we leave the boat. It has always been a bit sticky if left unused for long.
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