Hi Guys, I hope you can help me. I've managed to get a hold of a compressor with a busted motor. I already have a motor to fit to it, but don't know if I need a starter also. It is a Brook Crompton ED90LD single phase which I think is capacitor start induction run. It has a large capacitor on the side. Any ideas. Thanks Gordon
The motor should have a centrifugal switch internally to switch the starting capacitor into circuit during start up.
Depending on your compressor, you may need a contactor to turn the motor on and off as dictated by the pressure switch. Find the pressure switch and see what current it is rated at. Looking at the exisitng wiring may help unless this information has been lost when the old motor was removed.
hth
Bob
The main requirement for the switch is that it can handle the surge current when the motor starts. A contactor has a couple of advantages over a manual switch: it can be wired into a pressure switch, and it won't restart your compressor after a power failure.
If you need more information about the motor, call Brook Crompton. I think their number is on their website, and I've found them helpful in the past.
Best wishes,
Chris
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