16 years ago
I have a problem starting a scratch refrigerator motor. I plan to use
it for an air compressor.
The problem is:
The motor had some components attached to it, but they were burnt.
Directly to the motor there were 3 pins, so I supposed it was a three
phase motor. Then, I bought a starter capacitor, supposing it was the
way to run a three phase motor using one phase. I didn't know tre
required capacitance, so I bought the first capacitor I found, and it
was a 6 uF, 400VAC.
The motor doesn't start this way, and I know the motor is OK. Later,
searching at the web, I found several ways to start a 3-phase motor,
using some relay that plugs the capacitance only at start. I only
remember from the original components attached to the motor that it had
a plastic enclosure with something like a thick round button-cell
battery. I assumed it was a capacitor, but the one I bought doesn't
seem like that one at all, the new one is the typical cilinder 4 inches
Maybe I need another start technique?
Can I use any start technique I wish on every motor? Or is the kind of
motor associated with the start device?
In case I can use a capacitor, which capacitance should I use for a
typical refrigerator motor???
Thanks in advance!