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melloftus's avatar
melloftus
Explorer
Jul 06, 2019

ordered a Flojet 18555 MACERATOR and I have some questions

I recently came across a great thread here called "Dump Rage" and in it people were talking about a Macerator and dumping at home. Due to a recent unfortunate event in our home sewer we have located our outside sewer clean out. This amazing discovery only cost me an entire Saturday,emergency visit from the city,then a plumber and a $375 lighter checkbook so I am trying to find the silver lining in it.
Its only about 10 feet from where we park the TT however there is a slight pitch there and the clean out is a bit on a upward slope (maybe about a foot) I had trouble in the past getting all the water out of my fresh tank where it sits when I did the fresh water sanitation. I would hate to get it parked into its spot only to find out I cant get the black/gray tanks empty.
So the next option is to park it on the street which is level and dump from there using the Flojet. Now its about a 50-70 foot distance and about a 5-6 foot slope uphill to our clean out. From what I have read the flowjet should be able to handle this.
Here are my questions:
1) will this work
2) if yes, what recommended hose size- I am thinking 3/4 inch and either a 25 +50 foot or a single 75 foot
3) I understand it just comes with 2 short wires to power the pump. Our battery bank is all the way in the front of the trailer, waste valves in the back... My generator (Champion 3400-Watt Inverter) has a 12-Volt DC automotive-style outlet and the flowjet manual states it needs a 12 VDC, 20 amp power source. The generator came with what looks like jumper cables to fit into this outlet but I was thinking of getting something like these off amazon
https://www.amazon.com/gp/product/B07KFBMWN6/ref=ox_sc_act_title_5?smid=A2WBV9COGZXR17&psc=1
https://www.amazon.com/gp/product/B01MRPKPPG/ref=ox_sc_act_title_4?smid=A9JH5EZBE3SH8&psc=1
However now that I look at my Circuit diagram for the generator the fuse is 8 Amps there so I am not sure that will work, I just dont want to have to purchase a separate battery for this alone or run it all the way to my battery banks up front. (I can hear my husband complain already about what a PITA my "poo-blender" has become when really I am doing this for him. )
Could I make a plug to use to go into the wall or the outlets on my generator? The amp on my circuit on my generator is 20 there?
If I could do that that would be the best option as I could use the generator while out camping into a vault toilet if there was no dump station and then plug into shore power when home.
If none of the above would work recommendations for a power source for this would be appreciated.
Thank you for your time.
M

15 Replies

  • I may be misunderstanding the problem but I have 2 thoughts nonetheless.

    1) follow the cleanout line until a connection would be below the level of your outlet in the TT. Install a new connection at that point if feasible.

    2) build up the area where your TT wheels are to make it a foot or so higher.

    I wouldn't be trying to push water 5-6' uphill in any condition without a dedicated pump.
  • A couple of years ago a friend asked for my assistance in deciding which macerator pump to use for pretty much the same problem you have. Before spending any money, I suggested we probe the clean out drop pipe to see how far down the sewer pipe was. When it turned out the pipe was a good foot or so lower than the RV outlet about 15' away, we just dug down around the clean out and dug a trench to the RV. Then we cut the drop pipe off a couple inches above the sanitary 'T' at the house line, inserted another sanitary 'T' and ran a 4" pipe over to the RV location with an elbow, riser, and another clean out. Problem solved for about $40. If necessary, we could have cut the new 'T' into the house line to gain a few more inches of depth, but the pitch was correct without doing that.
  • melloftus wrote:
    If none of the above would work recommendations for a power source for this would be appreciated.


    I can't imagine why you'd use a generator to power a FloJet waste macerator when your battery is sitting right there. Buy a length of 10 gauge or 12 gauge cable, put clamps on one end to connect to the battery OR do as I did and permanently install the cable, running it from the battery location back to where the waste gates are. I mounted a standard Bargman connector at the waste gates and wired my FloJet with a matching Bargman so when I want to use it I just plug it in. Pics start here - click "i" at the top of any pic for a text description.
  • You say the clean out is about a foot higher when parked in the driveway. Are you talking just a foot higher by driveway, or a foot higher thanthe dump outlet on the RV. My thought is that if the outlet is lower than the dump outlet you could still use your stinky slinky. Gravity will push the stuff up hill until your tank is empty but leave the hose partially full. Then you can just lift up the hose (leave it connected to the RV) and walk the rest of the hose empty.

    Another option might be to see if possibly the sewer pipe runs under a planter or the lawn before it gets to the street. On my driveway my clean outs are multiple feet above the level of the trailer. While I was considering a macerator I noticed that the cleanouts were angled slightly toward the lawn and not straight down the driveway. After some digging around in the lawn I now have a cleanout way down near the street that I can dump into.