There are some buttons on the far left down near the bottom by the door. Have you been pressing these? Then you need to adjust the wheels one step at a time until the light changes to green. It is a bit fiddly at first but you eventually will get the hang of it.

Yes, I have been pushing those buttons and turning the wheels endlessly, The green light never comes on. I have followed several cheats point by point to no avail. I think the game is stuck. This happened earlier when I tried to go back and do over a section but the game would not respond to the same process as before. When that happened, I just gave up and proceeded with a later saved game. In this case, there is no later (or earlier) save game and I'm stuck. Without a solution, my only options are to start over or quit.

Can you give me picture of the current configuration?

you want a screen shot of the coffee machine?

Yes.

You could also try changing the coffee containers, as different coffee types require different valve combinnation.
Also, from bottom left, press the button with three dots, that'll open the door when coffee is made.

click on link. Hatch 1 closed when button pushed.

https://steamhost.cn/steamcommunity_com/profiles/76561197976011309/screenshots/

Press the lowest button left of the Bobby.

Pushed button with three dots to left of Bobby with same result. No green light. No coffee. Tried other cans in hatch 2 with same result except white can which makes yellow light blink.

Another issue, the lights by the four wheels never change...always purple never yellow...no matter the position of the wheels....on or off.

Sorry for lack of comment yesterday.
Seems that you may have ran into rare bug, that prevents changing the valve configuration.
Only option seems to be restarting the map.

Sorry for delay..been out of town. Restart which map.. the current level? How do I restart map without a saved game?

Never mind..figured it out myself.

I hope the coffee maker works out for you now.

We started the chapter/map over and arrived at the coffee machine agian with the same result. No coffee. No progrress. Is there a patch for this bug or is there some way we can bypass this step? We are tired of the coffee machine.

I'm trying to figure out the reason why the puzzle is broken for you...
Meanwhile you can bypass that puzzle with cheats.
Open console, type 'sv_cheats 1', then type 'noclip' and fly trhough the flood door and type 'noclip' and 'sv_cheats 0' again. This disables achievements for same playsession, but restarting the game enables them.
How to access console: http://www.tobyscs.com/developer-console-guide/