Sahemre:

If you really need a perfect model of this water cooler, I guess you have to draw it yourself. You can use a program like Art of Illusion or Misfit Model 3D .

If you are satisfied with a simpler model, you could use a refrigerator and add a few black and grey blocks to make it look like a water cooler.

I added two files: one of the refrigerator, one of an adapted refrigerator that resembles your watercooler.

Hans