2008 Rinker 330 EC Vacuflush toilet vacuum generator turns on frequently

Bmaggiac

The issue is that the J series vacuum generator is coming on every two minutes and runs for 30 secs then stops then runs again. I have tightened all clamps. I have replace all duck bills and piston. Ensured all o’rings are good and sealing. I tried adjusting the vacuum switch but still nothing. 

I am at a lose as to what to do next. Any suggestions?

aero3113

Does your bowl hold water? If not, have you replaced the seal at the bowl/base? This will cause the pump to run. Remove the clamp to separate the two and you will see the seal.

mattie

@Bmaggiac

As aero said above. Check the bowl first.
Also YouTube has some good vids. AquaStar Distribution makes some good Vacuflush repair vids.

https://youtu.be/A_hs18-lzVQ take a look thru their YouTube playlists.

Also - ??? is there an off chance that someone flushed a wipe or something gross that is stuck in the duckbills or bellows since you repaired?

Dream_Inn

If it is not leaking at the bowl, put your ear near the foot pedal and listen for a hiss.  I had the rod that is connected to the pedal and ball need replacing.  It has two O-rings on it that can leak.  The seal around the switch that turns the pump on/off?  I've also seen the seal around the actual vacuflush box leak.  Dare I go on?  I've changed every single piece on that vacuflush!

johnny44

Last year my vacuflush would hold pressure for an hour or so and then the pump would kick on. I changed what seemed like every o-ring and seal possible on that vacuflush last summer. Still wouldn't hold. I finally gave up and installed a new vacuflush head this spring. Money spent, but problem solved. (Actually, the money I spent changing out all of the parts last year was almost as much as a new head!)

echandler1971

The costliest part of me having to replace the gaskets in our vaccuflush was the PTSD therapy afterwards.

I had the same problem and replaced gaskets (and other parts since the toilet was apart)

Here are the notes I took when taking it apart so I learn from my mistakes:
Replaced: gaskets, flush ball, water valve
Gasket - thin flimsy down first and then thick
Toilet clamp needs to be be racheted down good with socket to form good seal
Ball held with 1 phillips screw
Make sure flush pedal goes first, then spring, then valve (hopefully it makes sense when you need it, cuz I don't know what I meant by that)
In my case, the brass pin and spring supplied with the kit just didn't work - had to use original parts which was fine

Bmaggiac

thanks for the good feedback!!  
The bowl holds water but I replaced the seal anyway. 
Tore apart the vacuum generator and replace all seals as well as put silicone grease to ensure seal.
I even replaced the vacuum switch on the vacuum generator.
Not sure what to try next.