General Product Information - Brita PROGUARD Coffee Manual De Instrucciones

PURITY C filter cartridges
Caution
!
• Note for people with kidney disease or dialysis patients: During the filter process the potassium
levels may increase slightly. If you suffer from kidney disease and/or have to stick to a special
potassium diet, we recommend you to consult your doctor beforehand.
• The filter system (filter cartridge and filter head) must not be opened or dismantled during
operation. The filter cartridge must not be opened.
PURITY C500 MinUp
Avoid strong impact once installed. In the event of strong impacts, brownish residues in the
filtrate may appear. In this case, flush the PURITY C500 MinUp cartridge in the PURITY C pre-filter
head until the water gets cleared (see chapter 9: Troubleshooting).
Storage tank
Caution
!
• The tank pressure should be checked at least (!) yearly (see chapter 6: Maintenance).
• Details concerning manufacturer, year of manufacture, serial number and the technical data are
provided on the name plate which is located at the top of the tank.
• An inert gas, for instance nitrogen, MUST be used for the gas recharge.

3 General Product Information

3.1 How Reverse Osmosis Works in PROGUARD Coffee
PROGUARD Coffee uses the mains water pressure to force water molecules through a semi-permeable
membrane. The concentrate of PROGUARD Coffee with its concentrated amount of scale, gypsum,
sodium chloride and sodium sulphate will be released to the drain. The permeate however is nearly
free of ions and molecules other than water and carbon dioxide.
After being produced, the permeate gets mineralised afterwards to allow the coffee aroma to fully
EN
develop. The mineralised water is called filtrate. Depending on the local water conditions, the level of
mineralisation can be customised to various degrees, resulting in rather low, medium or highly min-
eralised water. All mineralisation degrees have a different effect on the taste of coffee.
Level of mineralisation
Low
Medium
High
3.2 Role and Functionality of The Main Components of PROGUARD COFFEE
Pre-filter cartridge: PURITY C Quell ST (option 1 of 2)
Uses ion exchange technology to reduce the carbonate hardness of the raw water, thus preventing
scale deposits in the downstream equipment. During the ion exchange process, carbon dioxide is
formed in the water, resulting into the formation of carbonic acid. The properties of this carbonic
acid are later used to increase the amount of minerals that can be released from the mineralisation
cartridge PURITY C500 MinUp. The level of carbon dioxide can be varied by adjusting the bypass
setting on the filter head of the PURITY C Quell ST cartridge. This results in up to three possible
mineralisation levels that can be selected.
Besides the use of ion exchange resin, activated carbon is used in the PURITY C Quell ST pre-filter
as filter medium to protect the membrane in the PURITY C150 PROGUARD cartridge.
48
Carbonate hardness (°dH) of
the filtrate
approximately 2–3
approximately 3–5
approximately 5–6