srcarr52
We can't stop here, this is bat country.
What the knock off manufacturer should have done (4 wires from the motor)!
Most people will tell you that you can't reverse a 3 wire AC motor but you can by switching the capacitor lead from the starting windings to the primary windings. But this will run the motor with less power then normal but it will still run and not over heat. I know because I ran my NT grinder like this for an entire 44" full comp rocked chain and it kept working but I was disappointed with it's power so I decided to open the motor and uncouple the common from the primary and the starting windings.
First thing get the front cover off and the rotor armature out of the motor. You'll have to remove the fan cover and the fan to pull the whole armature out of the motor case. Once you get all the wires loose you'll notice that the common (red) is connected to the primary (thick wire) and the starting (thin wire) windings.
I had to cut both wires to untangle them after the little silver thingy which I'm assuming is some heat based overload resistor or something of the sort. Whatever it is, you'll have to solder it back in.
All soldered up. Now the wiring is:
Primary + = Black
Primary - = Red
Staring + = White
Starting - = Blue
Here it is all shrink wrapped and zip tied into place.
Next is to get all the wires through the wire loom. It can be done!
Most people will tell you that you can't reverse a 3 wire AC motor but you can by switching the capacitor lead from the starting windings to the primary windings. But this will run the motor with less power then normal but it will still run and not over heat. I know because I ran my NT grinder like this for an entire 44" full comp rocked chain and it kept working but I was disappointed with it's power so I decided to open the motor and uncouple the common from the primary and the starting windings.
First thing get the front cover off and the rotor armature out of the motor. You'll have to remove the fan cover and the fan to pull the whole armature out of the motor case. Once you get all the wires loose you'll notice that the common (red) is connected to the primary (thick wire) and the starting (thin wire) windings.
I had to cut both wires to untangle them after the little silver thingy which I'm assuming is some heat based overload resistor or something of the sort. Whatever it is, you'll have to solder it back in.
All soldered up. Now the wiring is:
Primary + = Black
Primary - = Red
Staring + = White
Starting - = Blue
Here it is all shrink wrapped and zip tied into place.
Next is to get all the wires through the wire loom. It can be done!
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