....I saw it and thought, "nice cooler!'. Not kidding. Slammed on the brakes, backed up a few frames and couldn't believe it was blue...and a nice blue.
Automatic rinse models, like my 0519, have a third control knob on the far right which turns on and off the automatic rinse feature. This model only has the built in water spigot which can be used to fill the wash tub.
Here's a photo of my 0519's control panel showing the Automatic Rinse feature.
As aptly spotted above the spigot is just to eliminate using the hose to fill tub or otherwise direct water (back to tub or drain).
These units would have been the "next generation" step from my metal and aluminum tub model. Other than the poly tub, addition of the spigot and a few other details the machine is basically the same as previous Hoover TTs sold in USA. You can tell by the two control knobs which are the same as older Hoovers.