Article: Turn on a cold water tap and let it run for a minute. Either remove the reservoir and fill it at the tap, or fill a separate container and pour the water into the reservoir. If the machine has a lid, replace it when the reservoir is full.  Do not fill the reservoir past the water line. Some commercial espresso makers have water piped directly into the machine. In this case, you don’t have to worry about filling the reservoir. The power switch will most likely be located on the machine’s backsplash. Turn the switch to the "on" position and give the machine at least 15 minutes to warm up. This will give the machine time to heat the water and build the pressure required to force water through the grounds. Larger espresso machines may need up to 45 minutes to warm up. Check the manufacturer’s instructions for the exact preheating time. The portafilter, or portable filter, is the handled cup component on an espresso machine that holds the coffee grounds. To get the portafilter ready, insert a filter basket into the basin. Then, insert the portafilter upward into the bottom of the group head and turn the portafilter to the right to lock it in place. Filter baskets and portafilters come in multiple sizes. Choose the right size portafilter and basket depending on whether you're making a single, double, or triple shot of espresso. Once the portafilter is in place, turn on the water for a single shot and allow it to pour through the group head and portafilter. This will rinse out any old coffee, detergent, or other particles.  When the water has finished, remove the portafilter by turning the handle to the left and then pulling the portafilter down and out of the group head. Wipe the portafilter and group head dry with a clean towel. Return the portafilter to the locked position in the group head. Once the espresso machine is ready to go, always leave the portafilter in this position. This will prevent the machine from losing pressure and help it maintain the right temperature.
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Fill the reservoir with water. Turn on and preheat the machine. Set up the portafilter. Rinse and dry the portafilter.