Minding your PSCs: knowing the right tests can eliminate confusion in maintaining permanent split capacitors.(Permanent Split Capacitor)

Fuel Oil News, June, 2005 by Lanthier, George

In this article, I'm going to discuss the Permanent Split Capacitor, or PSC motor. About five years ago, these motors hit the United States oil-burner industry and have taken off like no device I've ever seen. What's funny to me as a teacher and industry history buff is that everyone thinks that it's all new technology. Boy, are they ever wrong on that one.

A person who services warm-air systems and does air-conditioning service knows what I'm saying is right. Commercial burner people will also feel this way. A few who have found out "the secret" about those small, water-lubricated circulators know I'm right. So, why is it everyone thinks it's all new?

Well, basically it's because the split-phase motor ruled the roost for a long time and most thought...

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