It is advisable to descale the coffee maker after 200 cups of coffee have been made. You should use a specific product for descaling espresso coffee machines.
If espresso coffee does not come out of the machine, consider the following:
To clean the liquid coffee outlet/boiler unit:
If espresso coffee drips from the edges of the filter holder instead of from the holes, consider the following:
You should use ground coffee suitable for espresso makers.
The OK light indicates readiness or that the machine is at the correct temperature for operation. You should wait until the OK light glows before turning the selector knob to the coffee position.
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