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Marks on Chrome

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  • Marks on Chrome

    Hi my machine has suddenly gotten these strange stains/discolouration on the top of the group. Have tried wiping with a small amount of vinegar and microfibre cloth. Also a bit of backflush powder and hot water. Appeared to leave when the head was wet but reappear.

    Does anyone have any ideas what it is?

    Many thanks Click image for larger version

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  • #2
    I don’t know for sure but I would assume that to be calcium deposit or some other hard mineral left there by water.

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