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
Regular descaling prolongs the life of the appliance and guarantees optimal brewing results and a
constant brewing time for a long time.
In case of normal use (two full jugs of coffee every day), descale the appliance:
- 2 or 3 times a year if you use soft water (up to 18dH);
- 4 or 5 times a year if you use hard water (over 18dH).
Contact your local water board for information about the water hardness in your area.
You can use white vinegar with 4% acetic acid or a liquid descaler to descale the coffeemaker.
Note: If the appliance starts to produce more steam, this can be an indication that scale is building up.
Never use vinegar with an acetic acid content of 8% or more, natural vinegar, powder descalers
or tablet descalers to descale the appliance, as this may cause damage.
Descaling takes approx. 30 to 60 minutes.
1 Fill the water tank with one litre of white vinegar (4% acetic acid) (Fig. 16).
Note: Do not put a lter and ground coffee in the lter holder.
Note: You can also use an appropriate liquid descaler. In this case, follow the instructions on the package
of the descaler.
2 Press the on/off switch to switch on the appliance and let it complete the brewing cycle (see
chapter ‘Using the appliance’) (Fig. 9).
3 Empty the jug over a sink (Fig. 17).
Note: For extra through descaling and to make sure that there is no scale left in the appliance, repeat
steps 1 to 3.
4 Let the appliance complete two more brewing cycles with fresh cold water to remove any
vinegar/descaler and scale residues (Fig. 18).
5 Clean the jug and the lter holder (see chapter ‘Cleaning’).

You can order a new jug from your local Philips dealer or a Philips service centre under type
number HD7989/20 (black) and HD7989/00 (grey).

- Do not throw away the appliance with the normal household waste at the end of its life, but
hand it in at an ofcial collection point for recycling. By doing this, you help to preserve the
environment (Fig. 19).

If you need service or information or if you have a problem, please visit the Philips website at
or contact the Philips Consumer Care Centre in your country (you nd its
phone number in the worldwide guarantee leaet). If there is no Consumer Care Centre in your
country, go to your local Philips dealer.
 9
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