• This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn more.
  • Guest,  We want to wish You and Your Family a Healthy, Happy Thanksgiving! Click the "X" at the top right corner to remove this notice)
  • PLEASE: Read the FORUM RULES BEFORE registering!

4

Smoked my 8520 Mill motor today CRAP!

3
Like what you see?
Click here to donate to this forum and upgrade your account!
10

Catcam

Steel
Registered Member
Joined
Jan 1, 2017
Messages
27
Likes
11
#31
I was making chips today on my 8520 and all of a sudden everything stopped and the motor would just hum. It won't even do that in reverse. Apparently the thermal protection didn't protect very well that motor casing was almost to hot to touch. Well, it's smoked, I'm sure of that. I called a guy about a rewind but he hasn't called me back yet. It's a 3/4 hp Baldor motor. A new shiny one is around $300 I don't know what a rewind will cost. So other than this bad news, I actually have a question. Motors are not my strong point. If I have to go the new motor route, is there any harm in upgrading the horsepower? Say a 2 or 3 horse motor? I'll keep the RPM's the same but I would think with a higher HP motor, it would labor less and stay cooler. Can that damage the machine at all? What are any pro's and cons?
Hi
If the motor was running when it decided to stop and it hums but does not turn, it is most likely the run capacitor and not the Start Capacitor or a burn out.
A quick check with the multi meter (on cap setting) on the removed capacitor would verify if it is blown. Make sure the capacitance is the same value but the voltage could be of a higher rating but definitely not less. A voltage higher rated cap seem to make them more reliable. Try not to use chinesium brand as the quality/reliability does vary a lot.
Remember smoking motors is bad for your health
 

Bruce Bellows

Iron
Registered Member
Joined
Feb 21, 2017
Messages
8
Likes
2
#32
Would this be a hardware store item? I live in the sticks so options are limited. Is there a way to check the starting capacitor to see if it's bad? Sorry guys, electrical is my weakest subject.
If it turns out to be a capacitor an appliance repair shop should be able to get one for you or maybe even a farm supply retailer such s TSC.
 

Catcam

Steel
Registered Member
Joined
Jan 1, 2017
Messages
27
Likes
11
#33
If it turns out to be a capacitor an appliance repair shop should be able to get one for you or maybe even a farm supply retailer such s TSC.
If you open up the cover over the capacitor you should be able to read the value of the capacitor.
it should have a capacitance with units uF usually between 4 and 25 uF for a run cap and a voltage rating, depending on your local supply, but for the great US of A with 110 volt AC mains assuming single phase motor, should be anywhere over 150volts to around 300volts AC . more than this is unnecessary.

just double check the size and the connections to make it easy to replace. If you cant find the exact one as long as it is rated the same the wiring can be modified (safely) to suit.
 
[6]
5 [7]