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Post Info TOPIC: Water going straight to grey water tank.
Dncwell


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Water going straight to grey water tank.
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Good morning everyone,

We have a 2011 Winnebago Eyre fitted with a 125litre fresh water tank and a 125 litre grey water tank.

Usually we just use our onboard supply and top up the fresh water tank when depleted, however, we are in a van park and when connected to its water supply the water flows straight to the grey water tank without any of the sink, shower or hand basin wastes being used.

The same thing happens when the onboard pump is employed and the mains water supply is disconnected. I am at a loss as to why this is happening, cannot get under the chassis at present but I was under the impression that only the wastes flow to the grey water tank and that no water supply went to the tank. No doubt this problem will be easier to solve when the vehicle is over a pit.

Has anyone experienced this or have any ideas?

 Thank you,

Neil Creswell.



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Tony Bev


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Welcome to the forum, Dncwell

If I have interpreted the below snips correctly

in a van park and when connected to its water supply the water flows straight to the grey water tank without any of the sink, shower or hand basin wastes being used.
The same thing happens when the onboard pump is employed and the mains water supply is disconnected
There is something seriously wrong, and it will be very hard to diagnose without actually seeing it

I can only suggest that you get a plumber to look at it, asap

There should be no way of fresh water, (other than from a sink or shower), connecting to the grey water

For health reasons, I would not now be using the fresh water, just in case it has been contaminated by the grey water



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Tony

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PeterInSa


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Neil, If you are in the CMCA I suggest you ask the question on the CMCA Forum or:

aussiemotorhomers.com/forum/index.php

Plenty of Winne Owners on these Forums

I would be looking into the problem ASAP as Tony says for possible contamination.

Peter

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Dncwell


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Thank you very much Tony, am checking this out tomorrow, cannot understand how fresh water is running into the grey tank when only the wastes should be connected.

Best regards, Neil.



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Dncwell


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Thank you very much Peter, will check the link tomorrow .

Best regards, NEIL.



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Bagmaker


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Are you sure its not filling your fresh water tank? - I mean, you arent confusing the fresh tank with a grey tank?

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Dncwell


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No sir, I can fill our fresh water via the tank access cap but when the pump is employed or the mains pressure connected the fresh water flows to the grey water tank,

Best regards, Neil.



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iana


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This is a strange one for sure, as both systems should be totally separated. The only thing I can think of, is maybe some design weirdo has connected the breathers of each tank to a common single hose/vent outlet, and that outlet has become blocked.
Then there maybe a secondary problem of a non-return valve in the system when on mains pressure, allowing the mains water to continually fill the onboard water tank. Hence the onboard tank becomes full, over flows, can't flow out the vent and can only go into the grey water tank.

For health reasons alone, I don't think this would be done.

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Whenarewethere


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Bankstown Lidcombe hospital got the oxygen and nitrous oxide lines mixed up during construction. No one tested the system before commissing and a baby died. Nothing surprises me, if it can happen here it can happen to water tanks.



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Treecrest


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Question out of left field - How do you know that this is a Grey Water Tank? Maybe you have 2 Fresh Water Tanks.

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Dncwell


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Hello there Iana and thank you for your thoughts, it is a strange one. The flow to the grey tank from the mains is instantaneous even when the fresh water tank is empty. We have had no water problems for the last 30,000 kms but are getting closer to home where I can get under the truck to check non return valves etc.

 Thank you again,

Best regards, Neil.



-- Edited by Dncwell on Sunday 2nd of December 2018 11:21:09 AM

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Dncwell


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Thank you Whenarewethere that was truly culpable, however, we have had the truck for nearly a year and 30,000km and this is the first time that this has occurred .

Best regards, Neil.



-- Edited by Dncwell on Sunday 2nd of December 2018 11:18:26 AM



-- Edited by Dncwell on Sunday 2nd of December 2018 11:19:19 AM

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Dncwell


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Thank you Treecrest but I am very sure that we have only one fresh water and the other tank is the grey.

Best regards, Neil.



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dragonfly1


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Pretty sure you will have a one way valve stuck open 

Dragonfly1 



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Dncwell


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Thank you Dragonfly1, that is what I am thinkin/hoping, all I have to do is locate it, but why is there one fitted?

It would seem unnecessary to fit one or even have a water line to the grey water except for flushing and then it should be accessible and detailed in the Eyre handbook?

Best regards, Neil.



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iana


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Hi Neil, Thankyou for the replies, that's so much better than "Thanks in advance".

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Dncwell


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Thank you Iana, it is gratifying to have replies to my topic  and its my pleasure to acknowedge them.

Hopefully I will get to the cause and be able to post here in case somebody else has the same problem.

Best regards, Neil.



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landy


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Dncwell wrote:

Thank you Dragonfly1, that is what I am thinkin/hoping, all I have to do is locate it, but why is there one fitted?

It would seem unnecessary to fit one or even have a water line to the grey water except for flushing and then it should be accessible and detailed in the Eyre handbook?

Best regards, Neil.




The flushing idea could have some merit, just wondering if there could be a tap or directional valve for this purpose. Landy

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Dncwell


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Thank you Landy, going to get the truck over a pit today and check this out.  Will post the results.

Best regards, Neil.



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landy


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Hi there again Neil, what did you find when you put your Winnebago over the pit? I never saw any more posts. Merry Christmas Landy .

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Dncwell


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Hello Landry, very perceptive and thank you for your interest. The pit has been very occupied with Christmas travelers preparing for that onroad battle! Hope to access this weekend and shall post my findings.
Wishing you and all readers a very Happy Christmas and all the very Best for 2019.
Best regards, Neil,

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