5
Stage 3 : Sediment Filter Cartridge (Fine)
This is the third filtration process which reduces/removes finer impurities from the
inlet water which may have passed through the earlier two stages. These impurities
may be particles such as dust and sediments which are above 5 micron in size.
Recommended replacement cycle: 6 months / 6000Ltr
#
Stage 4 : RO Membrane
This is the heart of your Tata Swach Silver RO Water Purifier. This National Science
Foundation (US)- NSF certified membrane has fine pores as low as 0.0001 micron in
size to reduce water contaminants such as dissolved salts, pesticides, heavy metals
and water borne micro-organisms such as virus, bacteria etc.
100% dry membrane that comes with your system maximizes shelf life and is put in
your system at the time of installation.
Recommended replacement cycle: 2 years^
Stage 5 : Bacteriostatic Granular Activated Carbon (GAC) with Nano Silver
impregnation technology
This Post Carbon GAC cartridge imparts bacteriostatic property to the purified water
and enhances the taste of water.
Recommended replacement cycle: 1 year/ 12000 Ltr
++
Stage 6 : Ultra Violet Purification
The UV module safeguards against the microbiological impurities that can be present
in the water. Ultraviolet purification deactivates most of the protozoa, bacteria and
viruses by damaging the genetic code which renders them harmless as they cannot
reproduce themselves. The system will be shutdown in case the lamp fails or the
lamp life is over. The UV module used in the RO system is better than the one set in
BIS standard (IS-14724).
Recommended replacement: UV lamp fault indication/7000 hrs.
* If this cartridge chokes sooner than the recommended replacement cycle, it is advisable to install a pre-filter (available separately at a cost)
+ The life of GAC cartridge depends upon the organics, chlorine, etc present in the input water supply. Under standard test conditions the life
is measured as 6000 liters with 2 ppm chlorine water passing through the cartridge.
# The life of 3rd stage sediment filter depends upon the input water quality. Standard test conditions have ISO coarse A4 dust in water which
is passed through the cartridge for 6000Liters at a pressure of 60psi.
^Under standard test conditions of running the system at 10psi input pressure, TDS upto 750 PPM, turbidity less than 5 NTU and temperature
of 25
o
C. Depending upon the inlet hardness and TDS levels the membrane may need to be replaced earlier than 2 years.
++ The life of GAC cartridge depends upon the organics, chlorine, etc present in the input water supply. Under standard test conditions the
life is measured as 12000 liters with 2 ppm chlorine water passing through the cartridge.
