Product review (5 stars): Bingo, this was too easy.
My National 427 food machine stopped cooling so I bought the Supco RCO410 to replace the factory capacity/starter. Wired it up per the instructions which were easy to do and BINGO, compressor fired up and is cooling again. Saved $100 on a service call by repairing this myself. Probably buy 3 more of these to keep handy in my shop for future vending machine breakdowns.