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Is always an Engineer’s Fault?
how many people have had to change an ECM on a new Evaporator within the month it was installed? DOE is making the manufacturers, make the engineers use this “Energy Efficient” crap. i like to think it take more energy to make things that break within a month (ECM) than using the good ole stuff (PSC)…… what do they say? they dont make em like they used too! lol
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3 Replies
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I'm not sold on ECM's, but failures are primarily from voltage surges and overvoltage. Make sure to check the motors settings for the application and measure the supplied voltage to the unit.
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yeah, poor power quality is something to be aware of for most things nowadays, but this phenomenon is frequent across 80% of Walk-In System installs in the past 2 year or so. its cray cray!
Worst part is, say i bought the epmnt from United, 2 months later motor goes out, they dont have the darn motor, fan blade or the bracket in stock…. Total WTF -
I had a dehumidification kiln that had all kinds of power problems including phase angle. The power company supplied me with a ABB motor controller that would power the whole building. Stopped all motor shaking and heat problems with the beautiful square wave rock solid voltage.
On another job, I had to build a choke to prevent surges. Lightening took out multiple equipment several times.
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