I'm a neebie and Not a Professional electrician so please excuse my ignorance.
I bought an electric brick saw off Ebay because the ad said "Tested and works Great!". Well, it doesn't work great and now I'm trying to fix it to save the $150 I paid for it. Sending it back would cost $75 alone.
The saw motor starts up fine but runs for only about 10 seconds and then shuts off. It has a "self-protection" mechanism in it so if its under excessive load, it shuts off to protect itself. However, this seems to be happening all the time. I've opened up the box and the only thing that is there is a Motor Start capaciator of 150MFD/125VAC,a Run capaciator that is 50uF/350VAC, and a circuit breaker that detects the excessive load.
So I took the motor off the saw and completly free of all load, brought it into my cool house and it ran great. I put it back on the saw and it ran great twice. Then after about 5 minutes and after it started "presumably" heating up, the problem returned. The motor starts up runs for about 10 seconds and stops. I can tell that the centrifugal relay switch is Not opening up when this occurs. In fact, its obvious the motor does not go to full speed (only 50-75% speed) when this is going to happen so I can tell in about 1 second whether the motor is going to stop 9 seconds later
This morning, it was cooler and I went outside and started the saw motor up and once again this time, it ran fine and came up to 100% speed. I left it run for 10 minutes no problem. Then I turned it off and tried to turn it back on and the problem returned. It ran for 8-12 seconds and stopped.
I believe the problem is either the run capacitor or the start capacitor. Can someone please confirm if I'm on the right track and which one of these capacitor would be the issue if they indeed are the issue?
I found suitable replacements I believe on Grainger. Perhaps I should just buy both for $20 and just see if this fixs the problem. I've already invested a lot of money into something that doesn't seem to be working already.
Thanks in Advance for your assistance.
I bought an electric brick saw off Ebay because the ad said "Tested and works Great!". Well, it doesn't work great and now I'm trying to fix it to save the $150 I paid for it. Sending it back would cost $75 alone.
The saw motor starts up fine but runs for only about 10 seconds and then shuts off. It has a "self-protection" mechanism in it so if its under excessive load, it shuts off to protect itself. However, this seems to be happening all the time. I've opened up the box and the only thing that is there is a Motor Start capaciator of 150MFD/125VAC,a Run capaciator that is 50uF/350VAC, and a circuit breaker that detects the excessive load.
So I took the motor off the saw and completly free of all load, brought it into my cool house and it ran great. I put it back on the saw and it ran great twice. Then after about 5 minutes and after it started "presumably" heating up, the problem returned. The motor starts up runs for about 10 seconds and stops. I can tell that the centrifugal relay switch is Not opening up when this occurs. In fact, its obvious the motor does not go to full speed (only 50-75% speed) when this is going to happen so I can tell in about 1 second whether the motor is going to stop 9 seconds later
This morning, it was cooler and I went outside and started the saw motor up and once again this time, it ran fine and came up to 100% speed. I left it run for 10 minutes no problem. Then I turned it off and tried to turn it back on and the problem returned. It ran for 8-12 seconds and stopped.
I believe the problem is either the run capacitor or the start capacitor. Can someone please confirm if I'm on the right track and which one of these capacitor would be the issue if they indeed are the issue?
I found suitable replacements I believe on Grainger. Perhaps I should just buy both for $20 and just see if this fixs the problem. I've already invested a lot of money into something that doesn't seem to be working already.
Thanks in Advance for your assistance.