Mep-804 voltage ajustment potentiometer

[Tony 14]

My generator over voltage light kept coming on once in a while . Turned it on yesterday and voltage potentiometer started sparking and smoking.
Any suggestions.

 

[155mm]

It sounds like it was adjusted outside the stops

 

[Tony 14]

I'm sorry what does adjusted outside the stops mean.

 

[Scoobyshep]

There is a mechanical limit to it (the stops) depending on the rheostat used they can jump and arc if turned too far

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[rodriguez911]

I'm sorry what does adjusted outside the stops mean.

I am having the same problem can some explain or show me where the instructions on how to set the mechanical limit. I cant figure it out. Thanks

 

[Guyfang]

MEP-804A, or a MEP-804B?

 

[rodriguez911]

MEP-804A, or a MEP-804B?

MEP-804A

 

[Guyfang]

There are 2 different AC volt regulation systems for the 804A. Are you aware of that? You can NOT mix parts between them.

You can not "adjust" the mechanical limit. They come preset. You exceed them simply using enough force to more or less break the R1.

 

[rodriguez911]

There are 2 different AC volt regulation systems for the 804A. Are you aware of that? You can NOT mix parts between them.

You can not "adjust" the mechanical limit. They come preset. You exceed them simply using enough force to more or less break the R1.

Thank you for all your help. I guess I can just change the POT and make sure I dont turn it to the max or min.

 

[Scoobyshep]

There are 2 different AC volt regulation systems for the 804A. Are you aware of that? You can NOT mix parts between them.

You can not "adjust" the mechanical limit. They come preset. You exceed them simply using enough force to more or less break the R1.

My favorite form of adjustments involves a big hammer

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[Guyfang]

Its not as simple as changing the R1. You need to make sure the rest of the system is all from the same manufacturer. THEN get the R1 thats made for that system. If yours smoke tested, you need to ask why? Was it because its the wrong R1? Was it because someone forced it too far? This info is posted in the TM forum.