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Black heating water, non magnetic?

Nostrum

Plumbers Arms member
Plumber
Gas Engineer
Ok so I've replaced a 7 year old ecotec today after the main heat exchanger failed, the system water was jet black, insurance wouldn't cover it, boiler a write off on cost.

So, armed with my new 150 ltrs/min powerflush machine courtesy of Williams & Co ( will let you know when the cheque arrives Ray ) coupled with my magnacleanse courtesy of Williams and Co ( just one cheque is fine) I ripped it out and powerflushed the system with x800 as per usual for me.

the water was really mucky but usually you see it hit the magnacleanse and you can see the difference as it passes through, no so.

anyway carried on the process and on completion whipped the magnets out to show the customer the amazing magnacleanse in action, but barely anything was stuck to the magnets.

its a mystery how a system only 7 years old (new install) could ever get like this, pressure was always good, not topping up or bleeding rads at all.

Any ideas, as I'm a bit stumped as to what's caused this and why it's not stuck to the magnets?

ill post a picture of the water now, it's on my phone.
 
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good job you had a powerflush machine and not just the magnacleanse on its own. when i powerflush alot of stuff gets dumped that dont stick to the magnet, be it red, or dark brown.
 

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