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From my point of view this metal part is a base plate which makes it possible to mount the fan onto the plastic parts. As RedGrittyBrick noted, it is (or better was) zinc-plated. It seems to me, that most of the zinc layer is oxidized and cannot provide galvanic protection anymore. So why did it loose the zinc layer so quickly? If it was behind a cover ...


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that looks like just surface rust. wipe it with strong citric acid or some commercial rust remover (like CLR or Limeaway). if it all comes off, its just some rust that has dripped down from the upper port. assuming there are no current leaks, you can just wirebrush it off and seal with a rust converter (corroseal or 3m marhyde are by far the best at this ...


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I have used a wire-wheel on an electric drill to remove loose paint and rust from a radiator. It can be hard work but you can get down to bright clean steel using those tools. Your case looks extreme but I would try that to judge the effectiveness. I would aim to remove all traces of rust. If there is too much rust for this to be practical, that might be a ...


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You may very well be best advised to purchase a replacement fan assembly. It will come with a properly plated base plate. When you replace it then properly plug it in and reinstall the cover panel assembly. You should not operate the freezer without the cover in place so that the fan circulates the air inside the unit in the proper manner.


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I work for a natural gas company. Please call the gas company & advise you need your meter inspected for rust and they will clean and paint or replace the meter. It is the gas company's responsibility!!!!



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