Scale removal

mickysf
mickysf Club Member Posts: 6,492
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edited September 2017 in Caravans #1

Anyone have a tip for removing uric scale from inside Thetford cassette?  

Comments

  • commeyras
    commeyras Club Member Posts: 1,853
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    edited September 2017 #2

    Try white vinegar diluted in water.

  • EasyT
    EasyT Forum Participant Posts: 16,194
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    edited September 2017 #3

    I use white vinegar

  • mickysf
    mickysf Club Member Posts: 6,492
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    edited September 2017 #4

    Thanks guys, would that be neat?

  • Metheven
    Metheven Club Member Posts: 3,987
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    edited September 2017 #5

    I agree, bought 5 litres off Amazon and it really does the business, also good for the waste water tank, the toilets at home, the kettle, the iron, oh the list is endless especially as we are in a hard(ish) water area.

  • Aspenshaw
    Aspenshaw Forum Participant Posts: 611
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    edited September 2017 #6

    Thetford do a cassette tank cleaner that I find works although my cassette has never been too stained. I followed Thetford's advice this summer and turned the cassette upside down so the cleaner worked around the opening flap. It did but the float stuck and needed to be freed.

    Some swear by lime scale removing bio tablets they use in the cassette. Apparently, it stops the build up.

    Wife uses white vinegar around the house.

  • Merve
    Merve Forum Participant Posts: 2,333
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    edited September 2017 #7

    Citric acid can be bought in powdered form. That is also good for clearing limescale but the white vinegar idea is probably cheaper.

  • ocsid
    ocsid Club Member Posts: 1,395
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    edited September 2017 #8

    For whatever reason, that old issue of calcium hard deposits in the holding tank and the routine of dissolving them out, disappeared years ago when I moved over to using bio laundry liquid.

    I still spray the bowl with our salad vinegar condiment on about a fortnightly basis; it for its intended role contains brown malt vinegar but this has no adverse impact and clears the bowl of the calcium film and that's propensity for staining.

  • Unknown
    Unknown
    edited September 2017 #9
    This content has been removed.
  • EasyT
    EasyT Forum Participant Posts: 16,194
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    edited September 2017 #10

    I use it neat. I buy about 9 small bottles from local Asda. Pour into toilet bowl with trap shut. I refill some of the empty ones with water and place in the bowl to raise level to just below rim. Stand overnight (the vinegar not me) and then open trap to let vinegar into cassette.

    I alternatively rotate cassete over a couple of days. 

    If limescale is very thick it can then be broken off like de-icing a badly frosred freezer.

    Using bio tabs seems to reduce the problem greatly

  • Metheven
    Metheven Club Member Posts: 3,987
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    edited September 2017 #11

    Using white vinegar at the end of our touring season, in readiness for the following year.

    Taken at the end of last year, and now 4 years old.

     

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