Purpose: Remove limescale deposits, caused by magnesium and calcium, from the internal workings of the espresso machine.

Machine identity: These instructions are provided for descaling a superautomatic single boiler espresso machine with water reservoir. Your espresso machine must have a single internal boiler that provides both water for espresso extraction and steam for steaming/frothing milk. In other words, there is a separate steam switch you must depress to get steam AND where you wait 30 or more seconds to get steam. If you have a superautomatic espresso machine with a dual boiler, these instructions will not suffice. Please check with the manufacturer or your selling dealer if you are not sure.

Requirements before you start: cold espresso machine in power off position and plugged into outlet, descaling product, mixing container/pitcher, fresh water.

1. If your instruction manual has instructions for descaling, please use those instructions as the primary instructions, and please use the following as secondary instructions.
2. Remove water from reservoir.
3. Follow instructions on descaler product to acquire proper solution ratio as most descalers require a mixture with water into a mixing container/pitcher. We sell Ascaso Coffee Washer for descaling.
4. Pour descaling solution into water reservoir.
5. Place 6 oz or larger cup under steam wand.
6. Open steam wand knob to full open position.
   1. If your machine has a hot water switch,
      1. Press the hot water switch to ‘on’.
      2. Place another cup under the grouphead without the portafilter attached
   2. If your machine does not have a hot water switch,
      1. Place another cup under the grouphead without the portafilter attached
      2. Press the coffee switch to ‘on’.
7. Press the power switch to ‘on’.
8. Press the power switch to ‘off’ when approximately 1/4th of the descaling solution in the reservoir has exited into the cup(s)
9. Properly dispose of descaling solution from cups.
   1. If your machine has a hot water switch,
      1. Press the hot water switch to ‘off’.
      2. Press the coffee switch to ‘on’.
   2. If your machine does not have a hot water switch,
      1. Close the steam wand knob.
10. Press the power switch to ‘on’.
11. Press the power switch to ‘off’ when approximately 1/4th of the descaling solution in the reservoir has exited into the cup(s)
12. Wait 10 minutes with machine power in ‘off’ position.
13. Repeat steps 5 through 14 one more time.
14. Rinse water reservoir and hoses with fresh water.
15. Refill reservoir with water.
16. Repeat steps 5 through 13 two times with fresh water only to rinse machine of descaling product.
17. The machine has successfully been descaled.