A.O. Smith X4+ User Manual page 9

Stage 5 – RO (Reverse Osmosis) membrane

RO membrane contains semi-permeable membrane wherein the water is passed
through the semi-permeable membrane to remove TDS (Total Dissolved Solids) and
heavy metals like mercury, arsenic, lead, chromium, cadmium etc. It also removes
microorganisms like bacteria, virus, protozoa and cysts.
Stage 6 and Stage 7 – SCM-TECH

This filter is the combination of Silver Activated Post Carbon and MIN-TECH
(Mineraliser Technology). Silver Activated Post Carbon acts as polisher and enhances
the taste of water. MIN-TECH contains Calcium and Magnesium minerals which helps
to improve the taste and quality of water. It also adds the required essential minerals
back to water and balances the pH of water.
Figure 1
Ball
valve
Note: The Pre-filter and the Ball Valve comes along with the product as standard accessories.
(Silver Activated Post Carbon and MIN-TECH)
™
Pre-filter
05