A while back I posted looking for some insight on some evaporators that the fan motors continually pop breakers. At first I was certain that the plug harness for the motors had a short in it. Long story short, I’ve replaced all motors and the wiring harness and it will only keep for about 2 weeks before they start tripping breakers.
The issue that I believe is happening is that the evaps have 3, single phase 480v motors in them that are not sealed, in a room that they’re trying to maintain 45 degrees. This would be ok except they’re hosing the entire room down with hot water 2 or more times a day, this is leading to high humidity levels and the evaps sucking all that steam through the coils and across the motors. They also have a terrible habit of leaving the cooler door open to an un conditioned space. I haven’t been able to find a sealed motor that is the correct voltage and small enough to replace them. I can’t get them to understand this is causing the motors to short out, does anyone have any suggestions on how to make my life a little easier so I’m not replacing motors every few weeks?
Edit to add: the moisture in there is so high that the motor mounting brackets have literally rusted in half in just a few years since the units were installed.
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