Here you can find step-by-step instruction how to use large wash plant.
Guide to Use Large Wash Plant
Have the wash plant set to unlocked.
Press the red button on the gray box (this will turn on the cylinder).
Note: on that same side as the button.
Find the red knob and hold the F key, at the same time left click (you will see the knob move).
Do this 3 times and the water will start flowing.
Lock the wash plant down.