If there is no espresso coming out of the machine, it is the result of either a lack of water in the reservoir, or a clogged pump. For the lack of water, simply refill the reservoir from any source of tap. To remove the reservoir, check out our easy to follow replacement guide. If the pump is clogged, descale the machine by using lemon juice. For instructions on how to descale the coffee-maker, check the user’s manual on [http://www.manualslib.com/manual/228007/Delonghi-Ec155.html?page=9#manual|page 10|new_window=true].