Luxury Coach Lifestyles - View Single Post - AquaHot heat exchanger
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Old 07-09-2011, 10:57 PM   #7
rheavn
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Join Date: Feb 2010
Posts: 433
Default Fixed it!

Received the new motor yesterday & installed it today. System now works as designed. It took 2 1/2 hours to remove from the coach, install the new motor and reinstall in the coach. It looked like the heat exchanger case would split in half, but I didn't figure out how. I was able to remove the bottom squirrel cage fan from the bottom & then remove the motor through the bottom, while leaving the top squirrel cage fan in place. Reassembly in reverse went very easy.

One thing on the AquaHot systems that gets overlooked is checking the coolant PH. Since the coolant system is a closed system there is no changing interval, but older coolant can turn alkaline. PH test strips are available and takes only a minute to check. This check should be done at least annually. As long as the test is above 7.5 PH you are good to go. If it falls below 7.5 PH it is time to change the 16 gallon system.

Hope this helps someone....................
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Steve
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