Michael Pauly
11-02-2008, 12:01 AM
I finally got a chance to haul the unisaw I picked up used in the spring down to the shop, set it up and wire up a new 220v outlet. Got everything hooked up and the motor won't turn. Now when I bought the saw we tested everything out and things seemed to work properly so something obviously went wrong in the time I moved it and set it back up.
To move it down to my shop, I had to take the CI table off and remove the motor to lighten the load. There were no incidents in the move and I got it all put back together correctly (or so I thought), but honestly, there could be something wrong anywhere in the chain. Here's what I know right now:
- Definitely a 1-phase 220v 3hp motor
- I have 120-129 v on each leg of the new outlet (seems to be wired correctly)
- When I reconnected the motor, I hooked up the two hot leads to the corresponding hot leads coming from the switch and connected the ground from the switch to the grounding screw on the motor (there's no grounding wire on the motor)
- When I press the 'on' button on the magnetic switch, I get 120-129v on each side of the hot leads at the motor tested between the lead and the grounding screw.
- The magnetic switch doesn't stay 'on', acts like a momentary switch
Here are my questions:
1. From my research, I've seen mention of bad capacitors, but how would I check that and why would it go bad from the test run till now (no use in between)?
2. Should the magnetic switch be staying 'on' or does it require a closed circuit on the motor end? If the latter, would point to an issue at the motor?
3. What should I be looking at next?
Thanks in advance for any help.
Michael
To move it down to my shop, I had to take the CI table off and remove the motor to lighten the load. There were no incidents in the move and I got it all put back together correctly (or so I thought), but honestly, there could be something wrong anywhere in the chain. Here's what I know right now:
- Definitely a 1-phase 220v 3hp motor
- I have 120-129 v on each leg of the new outlet (seems to be wired correctly)
- When I reconnected the motor, I hooked up the two hot leads to the corresponding hot leads coming from the switch and connected the ground from the switch to the grounding screw on the motor (there's no grounding wire on the motor)
- When I press the 'on' button on the magnetic switch, I get 120-129v on each side of the hot leads at the motor tested between the lead and the grounding screw.
- The magnetic switch doesn't stay 'on', acts like a momentary switch
Here are my questions:
1. From my research, I've seen mention of bad capacitors, but how would I check that and why would it go bad from the test run till now (no use in between)?
2. Should the magnetic switch be staying 'on' or does it require a closed circuit on the motor end? If the latter, would point to an issue at the motor?
3. What should I be looking at next?
Thanks in advance for any help.
Michael