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  1. #1
    Sprint-Electric-340i-680i-1220i-Manual.pdf

    I attach a Sprint manual which may not be for your precise type but they seem fairly generic. For a quick fix, you could either
    (a) connect the speed control input on the drive direct to the +10v output they provide - that's pin 1 to pin 3. Make sure ping 2 isn't connected to anything. This will simply tell the drive to run at maximum speed when switched on.

    or -

    (b) wire in a 10k manual speed control pot, with the clockwise end to +10v and the other end to COM which is pin 5. Again pin 2 not connected. Make sure you have a pot with a plastic shaft, mounted so you can't touch the metal casing or screwed bush.

    I can't vouch that the exact same pin numbers will be found on your drive.

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