20 Most Recent Gaggia Classic Espresso Machine - Page 6 Questions & Answers

I recommend using a proper citric acid based descaling solution designed for espresso machines. This should be mixed and prepared as per the instructions on the bottle or packet. Definitely DON'T use vinegar, it's not good for your espresso machine.

You need to descale your coffee machine while it's cold. Put the prepared descaling solution into the water reservoir, turn on the machine and pump water (not steam) through the steam nozzle for about 20 seconds. If your espresso machine doesn't have the facility to pump water this way then pump it through the group handle without the handle in place. Immediately turn off the machine.

Your espresso machine is now cold with the descaling solution inside the water components. The limescale will be dissolving while you wait. After about 10 minutes turn the machine on again and pump more water through for about 1 minute. Turn the coffee machine off again and wait for the descaling solution to do its work.

While you're waiting for the descaling solution to eat away at the limescale build up, take the opportunity to clean other parts of your coffee machine. Pull apart your group handle and clean it out. Get all the burnt milk off the steam spout and wipe the outside of the machine.

Keep repeating the steps above until the water reservoir is empty. All the solution should have been pumped through the machine and the limescale will have been removed. This should take about 5 cycles and about 1 hour.

You now need to clean the bitter tasting descaler from your espresso machine. Thoroughly rinse the water container in your machine and fill it with fresh clean water. Run the entire container through your machine. Repeat this process again and your coffee machine or espresso machine is now descaled!! Make at least one coffee and throw it out to make sure all the descaling solution is gone.