WHAT IS OUR RADIATOR MADE OUT OF? THE ONE THAT CAME WITH THE KIT? ALUMINUM OR COPPER?
[BitmainWarranty is the Denver, Colorado centre, calling in is just a quicker way to contact them]. I think it is the best solution to return it now, as whatever stuff is growing in that loop will be all up inside those blocks as well. I'm here to see if we can help people remotely without having to ship stuff across a country / continent as then everyone loses out.
They usually do provide labels but I guess its a bit of a confusing situation for them - let me know after its all completed if you're still out of pocket and I'll try and get it sorted.
I could be wrong if they used a specialty one for miners, but I'm highly guessing its their standard.
Yes, you have to assume its copper or there are copper components. In several points in the listings (all changed by now) there has been a mention of copper on both the radiator and the fittings [internal coating]. You can see within the chamber of the radiator that there is definitely some form of dark orange coating, which may be brass or copper. So tldr, be safe and assume there is copper and aluminium within the same loop.