Posted by Ron-MO on January 26, 2016 at 10:18:06 from (108.171.131.170):
In Reply to: OT front load washers posted by pat sublett on January 26, 2016 at 09:05:33:
Reminds me of a pump I recently replaced in my outdoor wood furnace. Noticed that hot water was not nearly hot as it normally is, and later that evening, it continued to get worse. Checking everything yielded that pump was indeed running, just no circulation of the water to the house. That next day I pulled out the pump, and took it apart to find that the pump impeller had started to dissolve. Keep in mind this is a pump that is intended to be used in hydronic heating systems. Since I had it apart, and had a source for another pump, I decided to run and pick up a new pump and replace, but I did choose a different manufacturer to hopefully avoid similar failure. I decided to email the manufacturer of my findings to get their opinion on why a pump impeller was failing in roughly 7 years. They advised that the impeller was manufactured from a "composite" material rather than a metal such as brass or bronze to save cost, and that the life expectancy was about what I had experienced, and other manufacturers had similar materials. Ironically, I found out after the fact that the new pump I just put in, also has a composite impeller in it. Guess this means I will pick up a spare to keep around for the next failure.
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Today's Featured Article - Third Brush Generators - by Chris Pratt. While I love straightening sheet metal, cleaning, and painting old tractors, I use every excuse to avoid working on the on the electrics. I find the whole process sheer mystery. I have picked up and attempted to read every auto and farm electrics book with no improvement in the situation. They all seem to start with a chapter entitled "Theory of Electricity". After a few paragraphs I usually close the book and go back to banging out dents. A good friend and I were recently discussing our tractor electrical systems when he stated "I figure it all comes back to applying Ohms Law". At this point
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