Question about Grinders
This grinder hums and will not turn when plugged in unless you give it a spin. i dont have a wiring diagram and the wiring had been disconnected for years. the motor has no capacitor and no centrifugal switch but it does have a black rectangual looking item . i think it is a starter relay switch but i have no way of knowing how to test it or to hook it up. the windings coming off the motor consist of two larger wires and two smaller wires.the two larger wires are yellow and red and the two smaller wires are black and white. i have heard of two other grinders having this problem but i have no other like item to compare this grinder with to know how to correctly attach the wires. any help would be appreciated. a wiring diagram would be helpful. thanks
Hi again, OK, Well since I don't have a wiring diagram and the colors don't help. I am also going to assume it is 110VAC. The larger wires are probably the run or primary, it you remember which ones were connected it will help with polarizing. ( getting it to run in the right direction as well as the start and primary working together). You can use the two terminal switch but you should use a three wire cord. Use the switch to break the neutral and ground the case. The connections should be as follows: Connection 1, would have one of the primaries and one of the starts to neutral. Connection 2, the other start to the relay. Connection 3, the coil side of the relay to the remaining primary. ( if the relay has two connections on one end and one on the other it would be the single) Connection 4, the 3rd position on the relay to hot. That is how a split phase is wired. You may find a simple wiring diagram on the net if you type split phase motor wiring diagram. Good Luck to you, this should Fixya!
Posted on Mar 04, 2009
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Posted on Jan 02, 2017
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