After reading all this, my first question is where are you purchasing these switches? The very same place? Try using a different, more mainstream vendor. As Grigg eludes to, use American parts. My compressors are far higher HP and output and I have zero problems with this issue.. but I make sure to use American parts with a good warranty. Not sure what we will do when there are no American manufacturers left. But meanwhile, if they are in America, I know where they live. They KNOW I know where they live and they behave accordingly. Its just good business to provide local consumers with solid products. The cost is irrelevant to a point.
Lastly, and something to check is, what is the exact power coming in to the building? 240 +/- what? If you have serious power fluctuations that could be a problem. Power is a derivative of voltage AND current. I think the power company usually will check that for free. Are there other pieces of machinery drawing down then spiking up the voltage? Sometimes you have to live with who is sharing power in the same building (or circuit), other times, the power company put you on the same circuit (even though you have a small outbuilding behind your house) as some voltage/current sucking company down the line. Also, contrary to the weekend warriors of electricity, the black wire needs to correspond with the black wire throughout. Getting wires crossed in AC still works, but it introduces these very issues. I never trust myself to decide this. I call the electrician and sure enough, I get bitched out for crossing the wires now and then. Hope this helps. If I take your posts literally, seems you may have an anomaly associated with fluctuating power or something out of your control.
Think about it.. did the compressor work with the electricals it came with as advertised? Adding magnetic starters, etc to something that wasnt designed for it seems problematic. If the engineering of the product was good in the first place, it has to do with other factors maybe?
Last edited by Deve; 11/08/2014 3:20 AM.
