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7.3.6 AquaPrima water filter
Water quality
Coffee can only taste as good as the water with which it is made. A ready-made cup of coffee
comprises at least 98% of water. It is mainly the pH value and the lime content that influence the
taste of coffee.
The optimal pH value for a good cup of coffee is in the neutral range of between 6.5 and 7.5. Coffee
will taste bitter if the pH is higher. On the other hand, if it is lower coffee will take on a slightly tart
taste.
Water hardness defines the lime content of water. It is indicated in degrees of German hardness
(°dH). The optimal water hardness level should be more than 7°dH to 8°dH. If the water is not hard
enough the flavouring will not have sufficient aroma carriers. The result: coffee will taste bland.
Hint: If the water is too soft, i.e. if the pH level is below 6°dH, simply mix a pinch of salt with the
coffee in the filter paper. This will release the flavour into the coffee without leaving a salty taste. If
the water is too hard, it would be advisable to use the AquaPrima water filter. This filter optimises
the pH value and the water hardness.
Using the water filter
AquaPrima water filter
`
Insert the water filter
according to package insert
` Fill up with fresh water (max.
1.7 litres)
`
Open the control panel by pressing
the bar handle
` Remove watertank
` Insert watertank
` The machine can be used without a water filter but will then need
to be descaled more frequently. Using a water filter improves the
quality of the coffee and results in less wear and tear to the
components.
Training manual Section 7 – Page 23
Coffee machines