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  1. M

    WANTED: NOS CENTRIFUGAL SWITCH

    If you can't fix the centrifugal switch, you can use a timer in its place or a magnetic starter, as is used in sealed A/C compressors. To use a magnetic starter, you need to know the HP of your motor and get one for the same HP air conditioner compressor.
  2. M

    Would like to Borrow/Rent/Buy a 3/4" square broach.

    Is this something that could be milled in halves and then the two halves braised or welded together?
  3. M

    Resurrecting 1960 10EE with 460V Sabina drive

    I read the article on chelation, very interesting. I had assumed that the iron went into suspension and would therefore settle out over time. With chelation the iron is absorbed into a molecule which will stay in solution. However, the problem with getting water in everywhere remains, and the...
  4. M

    Resurrecting 1960 10EE with 460V Sabina drive

    Evapo-Rust is water based. After you use it, the metal will rust immediately unless you coat it with some rust preventative like oil or paint. It will also distribute the rust particles all around the gear box. You will have a hard time cleaning it out. If you use Evapo-Rust on something...
  5. M

    60's model 10EE knob and handle plating

    Why not call it patina? That makes it more valuable!
  6. M

    Resurrecting 1960 10EE with 460V Sabina drive

    That is a Mil spec Allen Bradley pot. It is about as good as you can get. I don't know if they are actually waterproof, but they are probably close. Are you sure that it is bad?
  7. M

    Resurrecting 1960 10EE with 460V Sabina drive

    Those capacitors are easily within the range of your meter to test. Electrolytic capacitors contain a dielectric liquid that maintains their capacitance. Over time, they do dry out. With that, the capacitance decreases with time. It is unlikely, but possible, that your short caused them...
  8. M

    Resurrecting 1960 10EE with 460V Sabina drive

    Your control board has 3 type of silicon devices; diodes, transistors, and the ICs. These are the most vulnerable devices to the electrical impulse that happened with the short circuit. Fortunately, they are all cheap. However, other things can fail. Resistors can blow out, but generally...
  9. M

    Resurrecting 1960 10EE with 460V Sabina drive

    A potentiometer is easy to test. They operate just like the graphic on the Sabina case. The two outside terminals have a constant resistance between them. The position of the knob will have no effect. The center terminal goes to a brush that slides along the resistor. It goes from...
  10. M

    Resurrecting 1960 10EE with 460V Sabina drive

    I notice that you seem to rotate your RPM control knob many times around. My modular drive 10ee speed control rotates less than 1 turn from lock to lock. Is your potentiometer original? Is the gear mechanism that connects the knob to the potentiometer OK? You can certainly test it by...
  11. M

    Resurrecting 1960 10EE with 460V Sabina drive

    That is right, testing the diodes in circuit can only suggest that there might be a problem. You only know for sure with one lead disconnected.
  12. M

    10ee kinamatic 5hp brush and spring source?

    If your springs look OK and feel good, I would not worry about them. Sometimes brushes squeak, that is just the way it is. If they are 1 inch long, then they are not worn out. I think that you are good to go.
  13. M

    Resurrecting 1960 10EE with 460V Sabina drive

    Those diodes are 1.5 amp 700 volt. A 1N5398 or 1N5399 should do it. Probably a 1N4007 would be OK but only 1 amp.
  14. M

    Resurrecting 1960 10EE with 460V Sabina drive

    The diodes that have a reading of about .6 in one direction are probably good. I am surprised that the zener diodes did not test properly using the diode setting of your meter. The diodes that have a very low reading are suspect. But the only way to know for sure is to unsolder one end and...
  15. M

    Resurrecting 1960 10EE with 460V Sabina drive

    It makes sense that the SCR's and diodes would have the opposite polarity from each other. That way, there need be only one heat sink per phase, as is shown in the schematic at the link I provided. I like to replace one thing at a time, that way I know that "I got it" and that one part was the...
  16. M

    Resurrecting 1960 10EE with 460V Sabina drive

    The Mouser part will work OK. Note that the diode symbol is pointing down, reverse polarity. You must get a diode with the symbol in the same direction. Getting one with the same stud size makes things much easier. If you use some thermal grease, that will help control the temperature. I...
  17. M

    Resurrecting 1960 10EE with 460V Sabina drive

    The black device at the top left of the board is probably a full wave rectifier. It will have 4 connections if so. They, too, can be tested as diodes. I missed that. All in all, there is nothing on this board that is mysterious and cannot be fixed. Between a voltmeter and swapping parts...
  18. M

    Resurrecting 1960 10EE with 460V Sabina drive

    They do look somewhat like ceramic power resistors, but they are not. Ceramic power resistors are square in one dimension, these are rectangular. Ceramic resistors do not melt, they blow up!
  19. M

    Resurrecting 1960 10EE with 460V Sabina drive

    I have marked out the diodes and transistors on your board. I think that I got them all. RED - ordinary diodes, the printing on the board is D7 for example. BLUE - zener diodes, the printing on the board is DZ7 for example. YELLOW - transistors, the printing on the board is Q7 for example. The...
  20. M

    Resurrecting 1960 10EE with 460V Sabina drive

    A short like you had is like dropping a hammer into a machine. You do not know where it will land, but it will land hard someplace!

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