Lee, I have never seen a big washer like that with the suds level window below the door. Fascinating. When the program on the drum behind the curved cover called for an additive, did it buzz and stop everything until the operator flipped the reset switch and manually added the required ingredients through the chute on the right? Is the drain pipe 3 or 4 inches in diameter? I see the thermometer. Normally a laundry has a good supply of very hot water. Unless we are talking hospital laundry, there would not need to be steam coils in this machine to boost wash water temperature, would there?
I remember discovering the on premises laundries in motels where we stayed during the summer. I would park myself outside the double doors and enjoy watching. I would eventually be asked if I needed anything and would let them all know that I just liked to watch the machines. They were generally cool with that. This was back when the motels changed bed linen every day so there was lots of laundry.
Best wishes in your project to save this great old machine.
Tom