Does anyone know how to clean this machine. Does it need descalling?. If so what do I use and how do it do it. I called thr company and they we no help at all. They just tell me to call the dealer I got the machine from. It came with the building 
. I have one in our office with about 18000 cups on the counter and the coffee is beginning to taste different
. I have one in our office with about 18000 cups on the counter and the coffee is beginning to taste different