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Home Brew Forums > Home Brewing Beer > Electric Brewing > Why did my electric element get rusty?
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Old 09-24-2012, 08:35 PM   #1
cpirius
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Default Why did my electric element get rusty?

The element in my HLT is rusty after using it for the last 6 months or so. It's corroding where the element is connected to the threaded connector.



I drain all of the water out after I'm done with each batch. I'm not sure why its rusting. Is it just a poor quality element? It's a 5500W 240V element that I run with an solid state relay and a PID temperature controller.

Any ideas?


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Old 09-24-2012, 10:37 PM   #2
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I've had a similar issue, and found a thread on another board on the topic. The solution for my system was to use a magnesium anode to help with this. People reported that the rust would go away when they mounted one in their kettle. It is basically just a metal rod that you attach in your kettle near the heating element. It requires another hole in your kettle to mount, but it is a full-time mount that you don't need to mess with once in place. The anode I got off amazon was for use in portable hot water heaters (like on an rv or house boat). Total fix is less than $15 for the few parts needed.


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Old 09-24-2012, 11:04 PM   #3
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This ^ (research "galvonic corrosion")
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Old 09-24-2012, 11:09 PM   #4
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That does sound like the reason, thanks for the info!
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Old 09-24-2012, 11:12 PM   #5
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On my heatsticks I have an RTV silicone caulk sealing that area, which seems to work well. Of course, that's a permanent mounting for the element. I doubt it would be that hard to remove the caulk if needed.


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