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Old 11-29-2016, 06:34 PM   #1
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Fresh Water Tank

I am winterizing our 2016 CAF27RL and need some help with making sure the fresh water tank is completely drained.

I removed the black cap from the tank drain and drained. I also ran the pump until no water was being discharged. Gauge light showed empty.

After putting in one gallon of RV anti-freeze gauge showed two green lights. Have I missed another drain plug or is the gauge not correct? I didn't get any anti-freeze flow from the drain and suspect this may have something to do with the plumbing for this particular model's tank and location and would require more anti-freeze to get flow. This model's drain and o'flow tubes are toward the rear of the RV and not sure about tank location.

Any help with this particular model would be appreciated.
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Old 11-29-2016, 06:54 PM   #2
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There is no way you will ever get the fresh water tank completely empty. The drain line is not on the bottom of the tank. It's up about 2-3 in. on the wall.
Don't worry about it. There is enough room for expansion if it freezes to not cause any problems or damage.

Am I understanding you correctly that you are pouring anti freeze into the fresh water tank?
Your trailer should have valves near the water heater that you switch/turn for winterizing. When turned in the correct position, the anti freeze only runs into the water lines. Nothing goes in the water heater or fresh water tank.

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Old 11-29-2016, 07:11 PM   #3
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Also NEVER count on any of the gauges to ever be any where near accurate.
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Old 11-29-2016, 08:31 PM   #4
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I have put one gallon of RV anti-freeze in the fresh water tank assuming the tank was empty and with minimal amount of water remaining in tank. The owners manual Method 1 was the procedure I was using for winterizing.
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Old 11-29-2016, 08:38 PM   #5
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Simply drain fresh tank and leave it . There will be a valve with about 2-3 ft of hose connected to it near the intake of the water pump. Just put that hose in the gallon of anti freeze. And pump away ...do each faucet.
If in doubt , find a neighbour that has a trailer to help.
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Old 11-30-2016, 04:09 AM   #6
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Remember to keep the drain valve open (if you have one) and the cap off during the winter.
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Old 11-30-2016, 09:14 AM   #7
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It will take a LOT of flushing to get that pink stuff out of your fresh water tank. There is only one outlet, and as you found, there is still some low-lying area that doesn't drain. The gauge/lights probably turned opaque when the pink stuff ran down the wall and obscured the sensors. Hopefully they will clean out also in the flush process. (Fill to overflow, drain, repeat, repeat, repeat)
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Old 11-30-2016, 09:16 AM   #8
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Quote:
Originally Posted by Ftoothman View Post
I have put one gallon of RV anti-freeze in the fresh water tank assuming the tank was empty and with minimal amount of water remaining in tank. The owners manual Method 1 was the procedure I was using for winterizing.

You are going to have to flush that fresh water tank many, many, many times before you ever get rid of that anti freeze.
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Old 11-30-2016, 09:52 AM   #9
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Never put antifreeze in your fresh water tank or your hot water heater. NEVER!
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Old 11-30-2016, 01:35 PM   #10
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Sorry if this seems like we are all being pretty harsh on you. If it weren't for a few mistakes made along the way we would never get much done. We've all been new at this some where along the line and we all had to learn the system. Thankfully you didn't do anything to break something and the mistake you made will something you will be able to correct in the spring when you "de winterize".
Don't stop asking questions. Everybody here will be more then willing to help.
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