TROUBLESHOOTING HEAT PUMPS…DIAGNOSING PSC MOTORS
A common failure with residential equipment condenser and blower motors is not actually the motor, but the run capacitor. Probably the majority of the time, the capacitors fail “open”…the motor can’t develop the necessary torque to actually begin rotation. So, it justs sits in a “stalled” condition, pulling above normal amps…the video gives some thoughts on the subject.
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April 15, 2008 at 6:07 am
Very good for those that need a clear explantion of how that fan motor and cap must togeather.
April 23, 2008 at 12:26 pm
Thanks for the demonstration. Maybe you could hook up an oscilloscope and show the phase angle created by the incorporation of a start capacitor into a psc motor.
Either way, keep up the good work
May 12, 2009 at 1:43 am
can you please contact Siobhan from The New Inventors at ABC TV at moylan.siobhan@abc.net.au – we are considering an invention which is all about “on demand defrost” which I was hoping to tell you about.
Siobhan
May 19, 2009 at 6:51 am
“On Demand” defrost has already been invented…thermisters sense a difference in temperatures between the outdoor coil and ambient…at some delta T, the system initiates a defrost cycle. If you have something better, I’m sure the industry would accept it…but, you should approach the equipment mfg’s with the idea.