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Effy's avatar
Effy
Explorer II
Apr 07, 2015

Remote control 12V switch

I posted something similar a while back looking for a solution to remotely control my macerator. My 29.2 has a macerator and as we all know the gray fills quicker which means every other day I have to run outside and run the macerator to drain it. One of the downsides of a macerator is not being able to leave the gray open to drain. I looked at a bypass kit but the way my lines are, they won't gravity drain. the line goes up over the frame rail to the other side which means gravity (the bypass) won't work. I can unhook it and dump the conventional way but it's on the passenger side which means I would need to run a hose all the way under the MH to the other side, not to mention this would be messy work. I actually like the macerator with the exception of the gray issue. So, was thinking of a way to remotely control my macerator. Rather than drilling and running another hard wired switch, I was thinking of replacing the existing switch with a remotely operated one. This way, when it's full I can run it from inside. Anyone ever see such a thing? A manual override would be helpful too. And it has to be an isolated signal. Don't want random signals setting it off. Any ideas?

5 Replies

  • As Burbman notes, there are lots of remote controlled 12-volt switches out there (such as these: Remote-Controlled 12-volt Switch). I do agree, though, that the plumbing arrangement seems weird, and I wonder if there's a solution other than a remote switch kludge? Keep us posted.

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  • Effy's avatar
    Effy
    Explorer II
    DSDP Don wrote:
    Effy.....Your description of where everything is located is confusing. In a typical wet bay you have the two dump valves. The macerator is usually mounted on the floor below the valves. The 3" hose runs from the combined drain to the macerator and the 1.5" hose runs out to the dump. You're losing me as to why you have to go to the other side of the coach.

    I've had the SaniCon macerator on two different coaches. It comes with a built in bypass hose at the pump. It also comes with nice housing, but the housing limits the mounting options. On both coaches I tossed the housing, making the pump easier to mount. The bypass is built in and will work as long as the pump is mounted below the height of the tanks. Take a look at the SaniCon system and check out how they incorporate their bypass....it's right on the pump and works great.

    I know this isn't a wireless remote, but the wiring was easy to install. Recently I mounted a second macerator switch in my half bath. Rather than doing the wiring of a two way switch, I just added a second switch, which means I have to turn either one on/off from the same location, no big deal. I then added an electric gate valve to the black tank with a second switch in my half bath. This resolved an issue with macerator toilets that use more water than standard toilets. I can now open the black tank valve and run the macerator from my half bath. If I stand near the half bath toilet I can hear the macerator running and then speed up when it's empty.

    It's really nice to drain all my tanks from the inside while I'm prepping the inside for travel. I fire up, close up my slides and then just disconnect my utilities.

    Lastly, Harbor Freight sells a heavy duty ON/OFF/ON remote controlled switch for a wench. I have plans to install one on my kids front electric trailer jack so that they can level from anywhere around the trailer. The remote is about $35.00.



    Sorry I should have explained better. In the 29.2 the bathroom is on the passenger side. So the macerator is also on the passenger side. While it's true the wet bay is on the drivers side the valves are on the passenger side and controlled by long cables from the driver's side wet bay to the passenger side. So all the works are on the wrong side but they ran the macerator hose over to the typical location. The hose goes up over the frame rail and down the other side. The reason they put a macerator on the 29.2 really. So there is no way to gravity dump via the macerator bypass. Now I can gravity dump, but like I said it's all on the passenger side and I would have to run it over to the driver's side. Basically I have 2 wet bays. All the works on the wrong side and the macerator to get it over to the correct side. My issue is that I can't bypass it because of gravity. So was looking for an electrical solution.
  • Effy.....Your description of where everything is located is confusing. In a typical wet bay you have the two dump valves. The macerator is usually mounted on the floor below the valves. The 3" hose runs from the combined drain to the macerator and the 1.5" hose runs out to the dump. You're losing me as to why you have to go to the other side of the coach.

    I've had the SaniCon macerator on two different coaches. It comes with a built in bypass hose at the pump. It also comes with nice housing, but the housing limits the mounting options. On both coaches I tossed the housing, making the pump easier to mount. The bypass is built in and will work as long as the pump is mounted below the height of the tanks. Take a look at the SaniCon system and check out how they incorporate their bypass....it's right on the pump and works great.

    I know this isn't a wireless remote, but the wiring was easy to install. Recently I mounted a second macerator switch in my half bath. Rather than doing the wiring of a two way switch, I just added a second switch, which means I have to turn either one on/off from the same location, no big deal. I then added an electric gate valve to the black tank with a second switch in my half bath. This resolved an issue with macerator toilets that use more water than standard toilets. I can now open the black tank valve and run the macerator from my half bath. If I stand near the half bath toilet I can hear the macerator running and then speed up when it's empty.

    It's really nice to drain all my tanks from the inside while I'm prepping the inside for travel. I fire up, close up my slides and then just disconnect my utilities.

    Lastly, Harbor Freight sells a heavy duty ON/OFF/ON remote controlled switch for a wench. I have plans to install one on my kids front electric trailer jack so that they can level from anywhere around the trailer. The remote is about $35.00.
  • Unless I misunderstood, don't you have to go out to the wet bay anyway to open the gray tank valve?
  • I have used this 12v remote control switch with an inverter and never had any issues with stray signals turning it on/off when not wanted. The switch is rated up to 15 amps so check to power draw on your macerator. If the pump draws more than 15a at 12v, you can still use this switch to power a relay.