Thetford again

Discussion in 'The Beginner' started by houdini, Nov 7, 2015.

  1. houdini

    houdini Funster

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    We don't know whether we will have another chance to get away this year and there is about a litre of clean water and a blue tablet in the Thetford cassette. We know about draining all the main pipe systems down but is it likely to do any harm if we leave that small amount in the loo cassette over the winter?
     
  2. Geo

    Geo Trader - Funster

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    I would suggest no risk at all.
    problems from freeze up's occur when there is nowhere for the freezing water to expand so it bursts pipes etc to get out
    in a cassette there is ample room to expand, if it was full to the brim however it would proberbly burst or cause damage
     
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  3. icantremember

    icantremember Funster

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    Why risk it?
     
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  4. HymerB544

    HymerB544 Funster

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    I agree, no risk.

    Gary
     
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  5. Badknee

    Badknee Funster

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    Both answers right but my OCD would force me to rinse it out and leave it empty :whistle:
     
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  6. GJH

    GJH Funster Life Member

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    I used bio liquid rather than the blue stuff but never worry about having so little an amount in the cassette over winter.
     
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  7. Photo4x4

    Photo4x4 Read Only Funster

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    Good question as I was just thinking about the same thing. My idea was to leave it with a diluted solution of the 'blue' (2.5 ltrs) to keep it all fresh and ready to go.

    Everything else is drained.

    KG
     
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  8. HymerB544

    HymerB544 Funster

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    Never stop using the van, so we never drain it off. The only thing I have ever done, on the advice of an old friend who also has a motorhome, is to leave the tap levers open, halfway between hot and cold. When we lived in Yorkshire we had much harder Winters but never had any problems. Since we moved to Cornwall, the coldest it's been in three Winters was a very mild, short-lived frost. Love it!
     
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  9. tonyidle

    tonyidle Funster

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    Occasionally I've forgotten to empty ours after the last trip of the year. It has never taken any harm in Winter.
     
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  10. Zigisla

    Zigisla Funster

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    I always leave the 1 -2 litres of water and Blue in the waste holding tank and the remains that cannot be drained out of the filler tank with pink. Have for the last 10 + years of having the folding camper without any snags. Leaves the tanks fresher, plus I am not sure if Blue / pink can freeze. If it can, still no worries plenty of space for the water to expand. Remember to lube the seals.
     
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  11. houdini

    houdini Funster

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    :dogthanks:

    to everyone for your helpful replies. @Zigisla what do you use to lube the seals please?
     
  12. Anthea M

    Anthea M Funster

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    We use olive oil.
     
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  13. The Wino

    The Wino Funster

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    silicon spray to lube seals they sell a thetford one
     
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  14. Zigisla

    Zigisla Funster

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    Yeah, Proprietary spray from Thetford. Never really used anything but proprietary products for anything blue for the loo, pink for the flush, green for the grey tank. Maybe why I'm broke:rolleyes: or could that be cos I've just bought a new unit arriving in 5 weeks:clap:. Seriously, I could single handedly keep all manufacturers in business. I am the salesman's dream. Spray for your shoes Sir, Hell yes. Insurance for that pice of equipment that your house policy already covers, hell yes.
     
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  15. Charlie

    Charlie Funster

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    My thoughts exactly... Whoever heard of a pipe bursting from water on the outside ? Water freezes and expands. If it has room to expand it cant do much harm.

    That said I cant think of even a tiny reason to leave any water in it. Or anywhere else for that matter (y)(y)
     
  16. paul18

    paul18

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    When tugging, we had a tap in the caravan freeze and split. Didnt discover it until away, total avoidable pain in the a**e! As said, why risk it?
     
  17. houdini

    houdini Funster

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    Thanks again to all who have responded.
    Asked out of interest to know the likely risk; we hope to still have the occasional day out but David is waiting for his operation date. We may then only have a couple of days' notice and not be able to get out to Addie to sort out the cassette. :)
     
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