Culligan Aqua-Cleer Advanced Drinking Water Systems - Manual (Page 5)

5
Sequence of Filtration Type of Filtration Specification
Advanced Filtration
Total Defense
Arsenic
Perchlorate* Speciality Carbon Block
Specialty Media
1
Specialty Media
1
Post-Filtration Carbon Granulated Activated Carbon Block
* Cartridges not for sale in California
1 Specialty media cartridges must be installed after the RO membrane and system must have a Performance Indicator Device
(PID) installed to track gallon usage.
Purpose of each level of filtration:
Pre-Filtration:
Pre-filtration for this system is used to remove large contaminants from the water before
they reach either the reverse osmosis or nano filtration membrane. The use of pre-filtration
cartridges helps extent the membrane’s life. There are two types of pre-filtration available
with this system: sediment filtration and carbon filtration.
Sediment Filtration: Sediment is defined as sand, dirt, silt, fine sand and or
coarse sand that can be found in many water supplies.
Carbon Filtration: Carbon is used to reduce chlorine taste and odor. Most people
often describe this taste as being slightly chemical or they equate their drinking
water to that of the local pool. Municipalities use chlorine to disinfect the water on
the way to your home. This is a necessary step to delivering safe water to your
home but depending on the level of chlorine by the time it reaches your home the
taste of your water may be unpalatable.
Membrane Technologies:
The Aqua-Cleer system can utilize two different membrane technologies; reverse osmosis
and nano filtration. Each one of these technologies use a tightly woven membrane that
acts as a barrier to contaminants. Water is pushed up against this membrane at pressure.
Depending on the weave of the membrane only a certain percentage of contaminants can
pass through. Reverse Osmosis can reduce up to 99% of contaminants. The reason you
may choose nano filtration versus reverse osmosis is often a question of taste. Some of
the things that give water its taste are minerals such as calcium and magnesium. A nano
filtration membrane will leave more of those minerals in the water.
Advanced Filtration:
The advanced filtration cartridges are specifically designed to reduce contaminants that
reverse osmosis membranes are not efficient in removing.
Total Defense:
The Total Defense cartridge should be added to your system to deal with lead, mercury,
chloramines, aesthetic chlorine taste and odor, cysts, Volatile Organic Compounds (VOC)
and MTBE.
About Your
System (con’t)