Black 'bits' in the hot water

Discussion in 'Tech/Mech General' started by Badknee, Mar 23, 2016.

  1. Badknee

    Badknee Funster

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    While we were away I noticed black bits in the washing up bowl and on investigation they are coming out of the hot tap only and not the cold one. They are quite heavy as the drop straight to the bottom of the water. We have been heating the water to 60deg C on both gas and electric. Is it water heater clean out time do you think and proprietary brands or citric acid if available?

    Ta very muchly.
     
  2. GJH

    GJH Funster Life Member

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    Tha's not bin 'eatin' t' watter usin' coil agen 'ast tha?
     
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  3. Badknee

    Badknee Funster

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    Just the sort of answer I would expect from a Glossop lad. We use coke or anthracite don't you know :LOL:
     
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  4. scotjimland

    scotjimland Funster Life Member

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  5. Badknee

    Badknee Funster

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    Thanks Jim.
     
  6. JockandRita

    JockandRita Funster Life Member

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    Paul, the instructions in my Hymer manual, for cleaning and descaling the stainless steel Truma hot water tank, says to use white wine vinegar.

    I must admit, in all my years of Caravans and MHs, the only time I've experienced black bits in the water, was from the Thetford toilet rinse tank. I've been fortunate enough to have never experienced it from any hot water tank. (y)

    Cheers,

    Jock. :)
     
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  7. Badknee

    Badknee Funster

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    Thanks Jock, were away this weekend so I'll try to get a 'sample' oooer Mrs. To see if I can see what it is. As I said its heavy rather that floaters, wonder if it's rust or sumfink? (n)
     
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  8. WillH

    WillH Funster

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    If black and heavy probably rubber.
     
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  9. Badknee

    Badknee Funster

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    You might be right there Will, hope not.
     
  10. Smith and Sharp

    Smith and Sharp Funster

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    That's what I thought..... Might be a seal deteriorating, I'd keep an eye out for a leak anytime soon Paul ....:(
     
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  11. scotjimland

    scotjimland Funster Life Member

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    I was going to suggest it's black bacteria that can grow in hot moist places.. like inside the hot tap.. but if they hare heavy and sink, do you have a carbon filter perhaps.. If so could be it breaking up and it's bits of carbon you see ?

    How hard are they ?
     
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  12. Badknee

    Badknee Funster

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    Were away this weeken so I will investigate further.Not seen a carbon filter Jim just a small particle filter but I will have a good look around.
    Thanks for the suggestions (y)
     
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  13. Badknee

    Badknee Funster

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    Well I'm 99% sure it's rust but confused where it's coming from. I've ran the cold water taps in the kitchen and bathroom and not seen anything. I've ran the hot water in the bathroom and can't see anything but in the kitchen sink it's there and its metallic a magnet attracts it which makes it ferrous. So is it the heater or the tap I wonder?(n)
    Deffo not rubber it's hard and gritty but why only the kitchen? Tap seems to be made of alloy which wouldn't be attracted by the magnet.
     
  14. Tootles

    Tootles Funster

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    Told you about putting your old teabags into the water tank........:(
     
  15. icantremember

    icantremember Funster

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    If it's rust it should be brown .....



    .... are you sure you're not drawing from your cassette?:eek:
     
  16. andy63

    andy63 Funster

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    Not on the van but in the house I fitted some sort of a filter to the combination boiler... It's on the primary heating side which does get hot..60/70 deg C I would think.. The filter is a magnetic rod and when I clean that every year it's a fine black dust like material that is on the magnetic filter.... as it's on the primary side there is no chance of it appearing at taps .. but it could be a similar build up in your boiler... but would expect to see it at all taps I suppose..
    Ta andy
     
  17. Badknee

    Badknee Funster

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    Yes Andy that's a Magnaclean, fitted many but their massive for a Moho install. I'm more worried what falling apart to be honest, pump, heater, tap?
     
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  18. andy63

    andy63 Funster

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    Lol.. Wasn't suggesting it was suitable for Mh. ... Just that the boiler could be producing a black scale
    But why only at one tap unless that's a quirk of the pipe runs preventing it from appearing anywhere else...
    Andy
     
  19. Steve devon

    Steve devon Funster

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    I had the same with an Adria caravan, was told it was rubber , due to cheap pipes being used , it got so bad the filter on the end or the sink tap was full of rubber filings
     
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  20. Badknee

    Badknee Funster

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    I'll have more time this week when I shut the Moho up till our next trip so will bugger about and see what I can find. (y)
     
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