Good Afternoon Everyone,
I have pulled most of my hair out trying to figure this out and after much frustration, and a few late-night pints, I'm turning to the pro's for help, guidance, and any suggestions you have.
The issue: I posted a while back here, stating that the starter capacitor blew out on the motor to a woodworking machine in my shop. After a few mistakes, I obtained the correct capacitor (Grainger model, same as the manufacturer recommended spec) and the machine was back up and running.
Approximately 2 months later, the capacitor blew again. I pulled out the centrifugal switch, cleaned the connector leads, replaced the capacitor, and everything was honky-dory again...
Another 2 months, another blown capacitor... This time I took the switch to a motor repair shop. They stated the switch was in good working condition and all I needed to do was file the contact pads so they touched with a maximum amount of surface area. Fixed the switch, replaced the capacitor, everything should be fine...
Capacitor blew again this morning... And so, I have attached pictures of the centrifugal switch, which I believe is still sticking and causing the start capacitor to overload.
My questions:
1. is the carbon burn normal for a centrifugal switch?
2. I set the weighted spring switch as far from the metal ring as possible to ensure near immediate release of current to the start capacitor... Is there an optimal spacing or positioning for the spring weighted portion of the switch?
3. I'm trying to troubleshoot other reasons why this might be happening...
-Can I put a different capacitor in that can handle a longer duration of current?
-The power coming into the building is 3 phase 240v, goes through several transformers and other set-ups in the neighboring business before coming into my shop at ~215v... could this change in phase/current cause the capacitor to fail?
-The machine sees a large amount of on and off... could this be contributing to the failure (~2-5 on/off cycles per hour)?
-Are the Grainger capacitors I keep replacing not reliable?
Any advice, comments, suggestions, or if you want any more information would be greatly appreciated. The more I try to troubleshoot this, the more I feel like I'm going in circles. Thanks again for any input.
Paul
I have pulled most of my hair out trying to figure this out and after much frustration, and a few late-night pints, I'm turning to the pro's for help, guidance, and any suggestions you have.
The issue: I posted a while back here, stating that the starter capacitor blew out on the motor to a woodworking machine in my shop. After a few mistakes, I obtained the correct capacitor (Grainger model, same as the manufacturer recommended spec) and the machine was back up and running.
Approximately 2 months later, the capacitor blew again. I pulled out the centrifugal switch, cleaned the connector leads, replaced the capacitor, and everything was honky-dory again...
Another 2 months, another blown capacitor... This time I took the switch to a motor repair shop. They stated the switch was in good working condition and all I needed to do was file the contact pads so they touched with a maximum amount of surface area. Fixed the switch, replaced the capacitor, everything should be fine...
Capacitor blew again this morning... And so, I have attached pictures of the centrifugal switch, which I believe is still sticking and causing the start capacitor to overload.
My questions:
1. is the carbon burn normal for a centrifugal switch?
2. I set the weighted spring switch as far from the metal ring as possible to ensure near immediate release of current to the start capacitor... Is there an optimal spacing or positioning for the spring weighted portion of the switch?
3. I'm trying to troubleshoot other reasons why this might be happening...
-Can I put a different capacitor in that can handle a longer duration of current?
-The power coming into the building is 3 phase 240v, goes through several transformers and other set-ups in the neighboring business before coming into my shop at ~215v... could this change in phase/current cause the capacitor to fail?
-The machine sees a large amount of on and off... could this be contributing to the failure (~2-5 on/off cycles per hour)?
-Are the Grainger capacitors I keep replacing not reliable?
Any advice, comments, suggestions, or if you want any more information would be greatly appreciated. The more I try to troubleshoot this, the more I feel like I'm going in circles. Thanks again for any input.
Paul
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