@Taz do you know which kind of head is in the boat? I'm going to guess it's powered. The Vaccu-Flush are like the ones on airplanes. They have a pump that creates vacuum to remove the waste. Lots of other moving parts. I imagine the switch would be to turn on the pump that makes the vacuum so the head will flush when you push the button. I think the system tries to maintain the vacuum as long as it has power. The switch would let you power it down to save battery (not to mention wear and tear) while it's waiting to be used.
I have an electric head. It has a function to pump water into the bowl, and another to pump the bowl contents into the tank. There is also a macerator in-line to chew up what goes through.
Hello Taz Depending on what head you have the Vacuu flush switch could just operate a pump to evacuate the holding tank into the sea, when out far enough, situated just to rear of the holding tank, worth cheching its operation, this pump was faulty when I bought my 280 2010, the holding tank was full to the top, I made it a condition of sale that the pump was changed, the broker did not like that, I have since installed an electric conversion with macerator JABSCO noisy but better than hand pumping. Cheers Bazza
@jme097 Correct, my head is not Vaccuflush. I was surprised to find a macerator in my system. Used to be you only saw them with waste systems that had a Y valve.
Invite the coast guard on board they will check out that Y valve for you. If that y isnt locked(zip ties or other lock mechanism) into the holding tank position you can be fined. They can and will check that as well as put dye into your system to be sure nothing is leaking out into the water. Poop is serious business for the coasties.
Zip tie is required - I used a (formerly highly visible) orange one to make it easy to see, and I left a big loop so they can tug on it to prove it's secured (don't ask why the previous kid had to tug on it with his Leatherman, scuffing my deck all up with his boots).
I've only run the macerator once - it worked well, but my recommendation is to have enough fresh water to completely flush all the poo out of the macerator circuit - otherwise it'll smell.
Comments
2002 FV 342 on Lake St. Clair - Past Commodore SHC - Vessel Examiner USCGAUX
Go Steelers!!!
I have an electric head. It has a function to pump water into the bowl, and another to pump the bowl contents into the tank. There is also a macerator in-line to chew up what goes through.
2002 FV 342 on Lake St. Clair - Past Commodore SHC - Vessel Examiner USCGAUX
Depending on what head you have the Vacuu flush switch could just operate a pump to evacuate the holding tank into the sea, when out far enough, situated just to rear of the holding tank, worth cheching its operation, this pump was faulty when I bought my 280 2010, the holding tank was full to the top, I made it a condition of sale that the pump was changed, the broker did not like that, I have since installed an electric conversion with macerator JABSCO noisy but better than hand pumping.
Cheers Bazza
2007 280 Rinker Express 6.2L B3
2002 FV 342 on Lake St. Clair - Past Commodore SHC - Vessel Examiner USCGAUX
I've only run the macerator once - it worked well, but my recommendation is to have enough fresh water to completely flush all the poo out of the macerator circuit - otherwise it'll smell.