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Thread: 2970RL Grey tank not draining
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06-28-2022, 08:24 PM #1
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2970RL Grey tank not draining
We just bought a 2022 2970RL Grand Design Imagine RV. According to the electronic display, my grey tank number 1 is not draining. I have 2 Grey tanks. Does anyone know which tank this is for? And also, any tips on how to drain it?
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06-28-2022, 08:45 PM #2
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Do you have 2 grey handles? 2 dump tubes?
Randy and Kris
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06-29-2022, 04:47 AM #3
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My trailer has 2 gray tanks. #1 is the shower/bathroom. Handle for that one is on the nautilus panel.
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06-29-2022, 06:46 AM #4
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Steve- Inventory Manager at Tom Schaeffer's RV, Shoemakersville, PA www.tomschaeffers.com
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2011 RAM 3500 SRW Outdoorsman Edition 4X4, 6.7 Cummins--TWEAKED!
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06-29-2022, 07:35 AM #5
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06-29-2022, 07:36 AM #6
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06-29-2022, 07:40 AM #7
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Idea. Open valve. Pour some water in the sink. See if it comes out. Could very likely be dirty sensors. If so, my fix is 16oz of Dawn Ultra and fill the tank and let it set for a few days. Then drain. Usually gets the sensors mostly working.
But. Don’t put Dawn in your black tank. There are a number of chems special for black tank sensors.
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06-29-2022, 08:45 AM #8
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06-29-2022, 01:22 PM #9
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I use a water flow gauge when I bring the hose into the trailer to fill the grey tank. For my 43 gallon tanks, when the hose cow gage says 35 gallons, they are full.
Orbit Hose End Water Flow Meter Black https://a.co/d/6jwHhMM
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07-01-2022, 07:20 AM #10
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Not unusual for a tank “that’s empty” to show 1/3 for several reasons. There’s always some water left in a tank so any change in level can move that water toward the sensors. Also, the sensors are notorious for erosions readings. Sometimes very little additional water added to the tank will register 1/3 if the rig is leveled differently or weight distribution shifts. I for one, don’t put much stock in gauges.
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