Water Hardness - Gastroback DESIGN ESPRESSO PRO Bedienungsanleitung

increases the energy consumption and reduce the quality of the coffee.
To prevent severe calcification, we recommend to descale the machine regularly,
according to the degree of hardness of your water and the frequency of usage. Here-
by, the usage of a gentle descaler, that does not affect any metal parts or silicone
seals, is important.
IMPORTANT: For decalcifying, please use the GASTROBACK PREMIUM DE-
SCALER (Art. No.: 98175) exclusively. This Descaler contains special additives
and is matched to the components used in our machines. Using the GASTROBACK
PREMIUM DESCALER a mixture of 50 ml descaler and max. 750 ml of water is
recommended.
Due to variations in water hardness and usage of the machine, we can not make
any precise specifications on the frequency of descaling. The following table is a
non-binding recommendation and is for guidance only.

Water Hardness

mild
medium
hard
CAUTION:
ty or removed. Ensure to keep an eye on the filling level of the water tank during
descaling. Always switch OFF the appliance, before removing the water tank. Do
not operate the appliance without the drip tray installed correctly.
1. Turn the selection dial to the vertical position, press the POWER button to switch
OFF and unplug the appliance.
2. Remove the portafilter from the group head and the stainless steel tube from the
hot water / steam wand. Empty the water tank. Then pour the descaler solution
(50 ml Gastroback Premium descaler + 50 ml water) into the water tank and re-
install the water tank at the rear of the appliance.
3. Connect the appliance to the power supply and press the POWER button to
switch ON the appliance. Place an empty heat-resistant jug or suitable bowl
under the group head and hot water / steam wand. Wait until the POWER but-
ton is illuminated continuously.
4. Turn the selection dial clockwise to the brewing position. Let approx. half of the
descaler solution run through the group head. Turn the selection dial back to the
vertical position and wait, until the POWER button is illuminated continuously
again.
80
Descaling
Do not operate the appliance with the water tank completely emp-
Frequency of
(Volume)
every 150 litres
every 90 litres
every 60 litres
or Time
every 16 to 20 weeks
every 4 to 8 weeks
every 2 to 4 weeks