Descaling The Coffee Machine - Philips HD7900 Manual

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8 After cleaning the chute, press the start button again to close the flap.

Descaling the coffee machine

Descale the coffee machine when you notice there is a descaling alert appeared
on the display. Only use white vinegar to descale, as other products may cause
damage to the coffee machine.
Warning: Never use vinegar with an acetic acid content of 8 % or
more, natural vinegar, powder descalers or tablet descalers to
descale the machine, as this may cause damage.
1 Open the water reservoir lid.
2 Fill the water reservoir with white vinegar (4 % acetic acid) up to the 10-cup
indication.