Grinds in Coffee...

Question

Hi...

 

I have a Nespresso D150 and quite often I end up with grinds in the coffee.  I have cleaned all the necessary items according to the instructions several times.  When I begin to make the espresso, tho coffee seems to come our normally for about the first ounce then a spurt of water comes through that is very dark (with the grinds in it).

 

Any suggestions?

 

Thanks so much.

 

Scott