A.O. Smith S7 User manual

Size: A5 [148.5 mm (W) x 210 mm (H)]
Part No.: 335023-000_R0
Date: 22-07-2016
USER GUIDE
SUPERIOR TECHNOLOGY FOR ADVANCED PROTECTION.
TM
Water Purifier

Dear Customer,
Congratulations and welcome to A. O. Smith family.
We thank you for the trust you have shown in choosing the A. O. Smith water purifier.
A. O. Smith water purifier is one of the most advanced RO water purifier available in the
market today. It is specially designed keeping in mind today’s water quality and your
needs.
Millions of customers all over the world trust A. O. Smith Products for their quality
and workmanship.
Our customer-centric approach manifests itself in many other ways too. If you need any
information or assistance with your water purifier, just call A. O. Smith authorised
distributor
Please go through this simple and easy to read instruction and installation manual to
get the best out of your A. O. Smith RO water purifier.
We once again thank you for choosing A. O. Smith.
Yours Sincerely,
Team A. O. Smith

Contents
What’s in the box?
User Guide Mounting Accessories Tube & ConnectorsWater Purifier
Key Features of your A. O. Smith water purifier .................................................. 01
Pre-instruction literature .......................................................................................... 03
General instructions ................................................................................................. 04
Introduction ............................................................................................................. 05
Product overview ..................................................................................................... 07
Function of indicators .............................................................................................. 08
Water flow ............................................................................................................... 10
Electrical diagram..................................................................................................... 11
Safety precautions.................................................................................................... 12
How to use............................................................................................................... 15
Draining drip tray..................................................................................................... 16
How to maintain your product................................................................................. 17
Troubleshooting....................................................................................................... 18
Technical specifications ............................................................................................ 20
FAQs......................................................................................................................... 22

01
ADVANCE PATENTED SSM TECHNOLOGY (SIDE STREAM RO MEMBRANE)
Suitable for water with low and high (upto 2000 ppm) TDS. Wastes less water and
improves pure water recovery.
MIN-TECH (MINERALISER TECHNOLOGY)
The MIN-TECH (Mineraliser Technology) adds essential minerals to the water. This
ensures that the water tastes fresh and natural and has balanced pH – an essential
requirement for drinking water.
TWIN ADVANCE ALERT TECHNOLOGY
For Sediment + Pre Carbon filter and RO membrane + other filter change.
ADVANCED PRE-FILTER & SEDIMENT FILTER
For effective removal of suspended solids and sediment from water and to ensure
better life of RO membrane.
Key Features of your A. O. Smith water purifier
RO + SCMT (SILVER CHARGED MEMBRANE TECHNOLOGY)
SCMT is an additional stage of purification to prevent any potential secondary
microbial contamination post RO purification. Double protection ensures purified
and healthy water.
PURITY THROUGH 7 STAGE PURIFICATION
7S TECHNOLOGY: Pre-filter + Sediment filter + Pre Carbon filter + Patented Side
Stream RO Membrane + MIN-TECH (Mineraliser Technology) + Silver Activated Post
Carbon + SCMT (Silver Charged Membrane Technology).In A. O. Smith RO water
purifiers 100% of the water passes through the RO membrane.

02
CONVENIENCE
Provision for both wall mounting & table top.
DIGITAL
Digital display for simple and intelligent display of information.
LARGE STORAGE CAPACITY
Purified water storage capacity of 9 litres.
WQA CERTIFIED RO MEMBRANE
RO Membrane element in A. O. Smith water purifiers is tested and certified by WQA
against NSF/ANSI 58 standards for material requirements.

03
On Receipt
It is our policy to promote safe delivery of all orders. This product shipment has been
thoroughly checked, packed and quality certified before leaving our plant.
Visible Loss or Damage
If any of the goods called for on the bill of lading or express receipt are damaged or the
quantity is short, do not accept them until the freight or express delivery agent makes an
appropriate notation on your freight bill or receipt.
Concealed Loss or Damage
When a shipment has been delivered to you in apparent good condition, but upon
opening the crate or container, loss or damage has taken place while in transit, inform
the carrier’s agent / A. O. Smith authorised distributor immediately.
About this Manual
This manual is a guide to good practice for operating and periodic maintenance of the
A. O. Smith water purifier.
Do not operate before reading manual supplied with this product.
Please follow instructions in this manual to ensure personal safety and proper operation
of this product. A. O. Smith assumes no liability for installation or servicing performed by
any unauthorised personnel. Always install, operate, inspect and maintain this product in
accordance with all applicable standards. Please store this user manual carefully for any
future reference.
Pre-instruction Literature

04
Safety
Your safety and the safety of your loved ones is paramount to us. There are several safety
related messages in this manual, which have been provided during various stages such as
installation, operation and maintenance of your A. O. Smith water purifier. These
messages point out potential hazards and also educate on how to reduce any potential
risks. Please always read and follow all safety messages as provided in this manual.
General Instructions
These instructions have been written as a guide for the proper installation and operation
of your A. O. Smith water purifier. A. O. Smith will not accept any liability where
these instructions have not been followed. However, for your safety and to avoid
damage caused by improper installation, it is recommended that water purifier must be
installed by A. O. Smith authorised distributor only.
Before proceeding with the installation instructions:
1. Inspect the A. O. Smith water purifier and its component parts for possible
damage. DO NOT install or attempt to repair any damaged component parts. If you
detect any damage in your A. O. Smith water purifier please contact A. O. Smith
authorised distributor.
2. Verify that the voltage being supplied corresponds to that which is mentioned in the
A. O. Smith water purifier manual.
IMPORTANT
This is the safety alert symbol. This symbol alerts you to potential
hazards that can hurt you and others. All safety messages will follow the
safety alert symbol and either the word “DANGER” or “WARNING”.
Indicates an imminently hazardous situation which, if not avoided, will
result in death or serious injury.
Indicates a potentially hazardous situation, which if not avoided, could
result in death or serious injury.
Indicates a potentially hazardous situation which, if not avoided, may
result in minor or moderate injury or property damage.
DANGER
CAUTION
WARNING

05
 Stage 3 – Pre Carbon filter
The Pre Carbon filter uses carbon block with high adsorbtion capacity which reduces
harmful chemicals including pesticides, volatile organic compounds, residual chlorine
etc., from water. It also adsorbs bad taste and odour causing organic compounds
from water.
Stage 4 – 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
disease causing microorganisms like bacteria, virus, protozoa and cysts.
Stage 5 – MIN-TECH (Mineraliser Technology)
The MIN-TECH contains Calcium and Magnesium minerals which helps to improve
the taste and quality of water. It adds the required essential minerals back to water
and balances the pH of water.
Stage 6 – Silver Activated Post Carbon
Water is passed through Silver Activated Post Carbon which acts as polisher and
enhances the taste of water.
Stage 7 – SCMT (Silver Charged Membrane Technology) filter In the final stage
water is passed through SCMT filter which ensures double purification of water
making it Pure & Sure for drinking.
A. O. Smith water purifier uses one of the latest technologies that is used in water
purification process. A. O. Smith water purifier works under the principle of RO
(Reverse Osmosis) technology which is found to be one of the most effective process. In
this process water under pressure is passed through a semi-permeable membrane.
Purified water is collected for drinking in a storage tank and impurities in the water are
flushed to the drain.
Introduction
Why water purification is important?
Water purification, today is essential due to the presence of harmful contaminants
present in the water supply. Rapid urbanisation and speedy industrial growth have led to
significant pollutants and contaminants being found in the water supply. Below is a list
of some of the harmful contaminants found today in the water supply which if
consumed in excess can be detrimental to human health.
• TDS (Total Dissolved Solids) like Nitrates, Chlorides, Sulphates etc.
• Pesticides and VOC (Volatile Organic Compounds).
• Heavy metals like Mercury, Arsenic, Lead, Chromium, Cadmium etc., imbalanced pH.
• Microorganisms such as pathogenic bacteria, virus, protozoa and cysts.
A. O. Smith water purifier removes excessive TDS (Total Dissolved Solids) in water by
more than 95%. A. O. Smith water purifier reduces heavy metals, removes pathogens
and balances the pH value. By this, it ensures you safe and great tasting water.
A. O. Smith water purifier has 7 stages of purification system, wherein the water is
passed through the various stages and progressively filtered to get purified water which
is stored in the inbuilt storage tank.
 Stage 1 – Pre-filter
The Pre-filter is used to remove physical contaminants such as dirt, dust, soil
particles, turbidity present in the water. This improves the life of the Sediment filter.
 Stage 2 – Sediment filter
The Sediment filter is used to remove fine and coarse physical contaminants present
in the water. This improves life of the Pre Carbon filter and ensures efficient working
of RO membrane.
How does the A. O. Smith water purifier work?

06
 Stage 3 – Pre Carbon filter
The Pre Carbon filter uses carbon block with high adsorbtion capacity which reduces
harmful chemicals including pesticides, volatile organic compounds, residual chlorine
etc., from water. It also adsorbs bad taste and odour causing organic compounds
from water.
Stage 4 – 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
disease causing microorganisms like bacteria, virus, protozoa and cysts.
Stage 5 – MIN-TECH (Mineraliser Technology)
The MIN-TECH contains Calcium and Magnesium minerals which helps to improve
the taste and quality of water. It adds the required essential minerals back to water
and balances the pH of water.
Stage 6 – Silver Activated Post Carbon
Water is passed through Silver Activated Post Carbon which acts as polisher and
enhances the taste of water.
Stage 7 – SCMT (Silver Charged Membrane Technology) filter In the final stage
water is passed through SCMT filter which ensures double purification of water
making it Pure & Sure for drinking.
Note: The Pre-filter and the Ball valve comes along with the product as standard accessories.
Figure 1
Pre-filter
Ball valve

A. O. Smith water purifier
07
Product Overview
Figure 2
Removable Drip Tray
LED Display Panel Indicators
Water Dispensing Nozzle
Top Cover
Main Body
Water Level Indicator
Faucet Knob
Changeable Panel
Drip Tray Cover
Front View
LED Display
Panel Indicators
Overflow water
Feed water inlet
Reject water
O I R
Rear Cover
Back View