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01-02-2015, 06:45 PM
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#1
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Junior Member
Join Date: Jun 2014
Location: Alberta
Posts: 10
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How to properly flush black water tanks on 293sbh
Hi guys,
In July 2014 we purchased a Laredo 293SBH and had a great summer with it! I am mechanically inclined, not to many things that i can't figure out. But...
Our Laredo has two grey tanks, two black tanks. It was unknown to me until I was winterizing the trailer that our unit has a built in black water flush connection.
How do we properly use this with two tanks? I would assume that both black water valves would have to be open to use this? I can't connect two sewer pipes at once at any of the dump sites i have visited. All summer I have been emptying the remaining fresh water into the black tanks prior to dumping to "flush things out".
Any advice is appreciated.
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01-03-2015, 05:45 AM
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#2
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Senior Member
Join Date: Feb 2013
Location: MA
Posts: 3,153
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Hi and welcome. First off is the black tank flush connected to both tanks or just the main tank or do you have 2 different flush systems. If both are flushed at the same time you wou put a Y connector on the pipe in the ground so you could connect to different dump valves at the same time. If you have a Y you can always have both hooked up so you don't have to move the hose while camping. Good luck.
__________________
2013 Premier 31BHPR
2014 F350 6.2L
Soon to be just DW and I
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01-03-2015, 03:24 PM
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#3
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Senior Member
Join Date: May 2010
Location: Rochester, NY
Posts: 1,605
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Unless you have two separate black tank flush connections, I am fairly certain the single flush connection only serves one black tank (likely the main or front one).
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01-04-2015, 01:12 PM
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#4
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Junior Member
Join Date: Jun 2014
Location: Alberta
Posts: 10
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there is only one connection for the "flush port".
Would we have caused any damage/piling in the tank by not using this? We had the dealer do a flush when we brought it to them for winterizing.
I will give Keystone a buzz tomorrow to verify if it flushes bother or just the one.
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01-04-2015, 04:47 PM
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#5
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Site Team
Join Date: Jul 2014
Location: Modesto
Posts: 20,357
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If there is any solid build-up in either tank, it can be taken care of. Just hook up to city water, then use a wedge or some pipe to hold the toilet open. Then pour a good dose of digester and fill the tank(s). Let it set for a few days, then take it out on a drive to "shake things up", and drain.
The wedge or pipe in the toilet will hold the flush valve open and run water into the tank.
__________________
2012 Copper Canyon 273FWRET being towed by a 1994 Ford F350 CC,LB,Dually diesel.
Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS.
Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.
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01-04-2015, 07:41 PM
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#6
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Senior Member
Join Date: Jul 2013
Location: Liberty, Texas
Posts: 5,036
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After dumping the tank I've put a few gallons of water in there and several generous squeezes of Dawn dishwashing liquid. Seems to keep things clean and smelling like a bouquet of spring flowers. ahem
I don't use the flushing system every time.
__________________
2018 Ram 3500 Laramie CC DRW LWB 4X4 Cummins Aisin 3.73
Reese Goosebox 20K
2018 Heartland Landmark 365 Oshkosh
2008 Bigfoot 25C9.4 LB Cabover
2023 CanAm Defender SXS
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01-06-2015, 07:00 PM
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#7
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Junior Member
Join Date: Jun 2014
Location: Alberta
Posts: 10
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Thanks for the info guys much appreciated! I always put a "pack" down the toilet every time we will filled up the fresh water. I'll probably scope it in the spring to take a peek at the tanks.
I also called Keystone yesterday, honestly impressed with the customer service. Was connected to a qualified person in minutes who looked up all the techanical information about my trailer. Therink, you are correct, the flush port is only for the forward tank.
Cheers,
Hutch.
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01-07-2015, 11:45 AM
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#8
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Junior Member
Join Date: Aug 2014
Location: Whitehouse, TX.
Posts: 9
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Hutch,
I have the exact same model that you have an was wondering if it did both tanks or not. Now that I know I wish they both had one. I have only used it once because of a small leak I am waiting to have fixed under warranty. Now for sewer hookups I do use a Y connector at the dump location, or if we have full hookups at our site. Its much easier that way.
Since you talked to a tech about your FW how much info were they willing to share? Did they tell you what fixtures went to which tanks? I know that I have two grey and two black, but I am trying to figure out where my kitchen sink grey water ends up?
Brad
__________________
2015 Laredo 293SBH
2004 Ram QC 4x4x Diesel
2001 Super Air Nautique 210 (502ci)
1975 Ford Bronco
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01-07-2015, 06:12 PM
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#9
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Junior Member
Join Date: Jun 2014
Location: Alberta
Posts: 10
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if memory serves me right the rear GW tank holds the kitchen sink and powder room. I do have to call them back on something else so i will try and remember to ask that question but i am 99% sure on this.
Master bath is the only thing that goes to the forward BW and GW tanks.
I only have the one hose when i go to the dump, to be completely honest the Y-Pipe sound to much of pain. As far as storage, connecting etc. Dump the front, move forward and dump the rear. I always have things to do while dumping the tanks. All in the process tanks 1-2min more without.
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