|
|
Post by Jugglerguy on Nov 19, 2022 17:03:30 GMT -5
I just burned out the motor on my Lortone ST-10 saw. I went into the garage to check on the slab I was cutting and it was full of smoke and the saw was off. The motor wasn't thermally protected and tripped the GFCI on the outlet.
I have an old Montgomery Ward motor that I bought at a garage sale that will fit on the saw. However, the cord is not grounded. It only has two prongs. I have two questions:
1. Can this sort of motor be grounded by changing the cord? I still have the cord from the previous motor.
2. Is it safe to use this motor if it's not grounded?
Thanks for any help you can give me.
|
|
AzRockGeek
has rocks in the head
Member since September 2016
Posts: 703
|
Post by AzRockGeek on Nov 19, 2022 17:17:22 GMT -5
Just attach the gnd wire to the screw on the cover plate.
|
|
|
|
Post by Rockoonz on Nov 19, 2022 21:57:58 GMT -5
Yep, what AzRockGeek said. Find a 14ga or preferrably 12ga cord and simply crimp or solder on an end that will fit under one of the cover screws. Did the blade bind into the cut to cause it to stop? Good to verify the cause of the stall. |
|
|
|
Post by oregon on Nov 19, 2022 23:09:32 GMT -5
I just got one (LS-10) dropped off yesterday that had the same thing happen. Emerson Motor, fried the start coil after it stalled, impressive.
ditto to the others, swap the cord, and attach the ground to the cover or frame screws.
It's a bit safer, quantifying the 'bit' is the hard part.
|
|
|
|
Post by hummingbirdstones2 on Nov 19, 2022 23:36:33 GMT -5
Yep, no worries if you do what these guys have said.
Older lapidaries always told me this scenario is another good reason for only putting "just enough" tension on a belt. It will cut well during normal operation, but can slip if there's a major bind on the blade. Smoked a belt on our old drop saw once, but the blade and motor survived.
|
|
|
|
Post by Jugglerguy on Nov 20, 2022 10:53:45 GMT -5
Thanks everyone. I might need to get a longer belt to make it looser. There's no way to make the motor closer to the shaft and the belt was pretty tight. Thanks for that tip, hummingbirdstones. |
|
