Descaling Procedure - Philips HD6591/40 Bedienungsanleitung

Use the correct descaler
Only citric acid-based descalers are suitable for descaling the machine. This type of descaler descales
the machine without damaging it. For the correct amount, see under 'Descaling procedure' below.
Each descaling mixture can be used only once. Use a new descaling mixture each time. We advise you
to use the special SENSEO® Descaler (HD7012/HD7011). Read the instruction leaflet in the package.
For more information on why it is important to descale, how to descale or which descaler to use, visit
our website at www.philips.com/descale-senseo.
Warning: Never use a descaler based on mineral acids such as sulphuric acid,
hydrochloric acid, sulphamic acid and acetic acid (e.g. vinegar). These descalers may
damage your coffee machine.

Descaling procedure

The descaling procedure consists of two descaling cycles and two flushing cycles. Do not interrupt the
descaling cycles and do not switch off the machine before you have performed the two flushing
cycles.
1 Fill the water reservoir with clean cold water up to the MAX indication and pour the water into a
bowl (Fig. 42).
2 Mix 50 grams of citric acid with the water in the bowl. Stir until the powder has dissolved (Fig. 43).
3 Fill the water reservoir with the descaling mixture and place it back on the machine (Fig. 45).
4 Remove the drip tray. Put a bowl with a capacity of at least 1.5 liters under the spout to collect the
descaling mixture (Fig. 6).
5 Place the 1-cup pod holder with a used coffee pod in it in the coffee machine. Close the lid and
make sure it is properly locked.
Note: Always put a used coffee pod in the pod holder when you descale the machine. This pod
serves as a 'filter' to prevent the sieve or hole in the pod holder from getting clogged with scale
residue.
Warning: Make sure that the lid is closed properly and the lid lever is locked before
you start descaling the machine.
6 Press the 1-cup button and the 2-cup button simultaneously.
7 During the descaling cycle, the water comes out of the machine at intervals. The CALC light, jug
button, 2-cup button and 1-cup button flash slowly in sequence (Fig. 44).
8 When the water reservoir is empty, the 1-cup button and CALC light start to flash quickly alternately
(Fig. 29).
9 Empty the bowl and place it back. Remove the used pod and the 1-cup pod holder. Place the
2-cup pod holder with one used pod in the machine. Close the lid.
10 Fill the water reservoir with clean cold water up to the MAX indication and pour the water into a
bowl (Fig. 42).
11 Mix 50 grams of citric acid with the water in the bowl. Stir until the powder has dissolved (Fig. 43).
12 Fill the water reservoir with the descaling mixture and place it back on the machine (Fig. 45). Then
press the 1-cup button to start the second descaling cycle.
13 When the 1-cup button and the CALC light start to flash quickly alternately (Fig. 29), remove the
used pod from the 2-cup pod holder. Clean the water reservoir by rinsing it thoroughly with cold
clean tap water a few times (Fig. 46).
14 Fill the water reservoir with clean cold water up to the MAX indication and put it back onto the
machine.
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