A.O. Smith X8 User manual

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 us from any phone,
anywhere in the country to our Customer Care No. 1800-103-2468/1860-500-2468.
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

Key Features of your A. O. Smith Water Purifier .................................................. 01
Pre-instruction literature .......................................................................................... 02
General instructions ................................................................................................. 03
Introduction ............................................................................................................. 04
Product overview ..................................................................................................... 06
Function of indicators .............................................................................................. 07
Water flow ............................................................................................................... 09
Electrical diagram..................................................................................................... 09
Safety precautions.................................................................................................... 10
How to use............................................................................................................... 12
Draining drip tray..................................................................................................... 14
How to maintain your product................................................................................. 15
Troubleshooting....................................................................................................... 16
Technical specifications ............................................................................................ 18
FAQs......................................................................................................................... 20
Warranty terms and conditions................................................................................ 22
Warranty card .......................................................................................................... 26
Service and maintenance ......................................................................................... 27
Disclaimer ................................................................................................................ 28
Contents
What’s in the box?
USER GUIDE
User Guide Mounting Accessories Tube & ConnectorsWater Purifier

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.
CONVENIENCE
Provision for both wall mounting & table top.
DIGITAL
Digital display for simple and intelligent display of information.
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.
ADVANCE ALERT TECHNOLOGY
For RO membrane and other filters change.
Key Features of your A. O. Smith RO Water Purifier
ART™ (ADVANCE RECOVERY TECHNOLOGY™)
Breakthrough Advance Recovery Technology™ gives true water recovery > 55%,
while ensuring 100% RO purification.
PURITY THROUGH 8 STAGE PURIFICATION
8S TECHNOLOGY: Pre-filter + Sediment filter + Carbon block + ART™ (Advance
Recovery Technology™) + Patented Side Stream RO Membrane + MIN-TECH
(Mineraliser Technology) + ZX Double Protection Dual Filter* (Silver Activated Post
Carbon block + SCMT). In A. O. Smith RO Water Purifier 100% of the water
passes through the RO Membrane and Double Purified by SCMT.
LARGE STORAGE CAPACITY
Purified water storage capacity of 9 litres.
WQA CERTIFIED RO MEMBRANE
RO membrane element in A. O. Smith
RO Water Purifier is tested and certified
by WQA against NSF/ANSI 58 standards for material requirements.
ADVANCE ALERT TECHNOLOGY
For Sediment + Carbon block and RO membrane + other filters change.
* Patent Applied | TDS: 750 ppm, Water temperature 27°C, Water feed pressure 20 psi.
01

This manual is a guide to good practice for operating and periodic maintenance of the
A. O. Smith RO Water Purifier.
This does not contain the full servicing procedures necessary for continued successful
operation of this product. The services of A. O. Smith Company Authorised Service
Technician must be employed periodically on the same.
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.
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.
Pre-instruction Literature
On Receipt
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.
Visible 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 representative immediately.
Concealed Loss or Damage
About this Manual
02

General Instructions
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 RO 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.
Safety
These instructions have been written as a guide for the proper installation and operation
of your A. O. Smith RO 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 Company Authorised Service Technician only.
Before proceeding with the installation instructions:
1. Inspect the A. O. Smith RO 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 RO Water Purifier, please contact the
company through Customer Care Centre, details of which are mentioned in this
manual and on the product.
2. Verify that the voltage being supplied corresponds to that which is mentioned in the
A. O. Smith RO 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
03

Introduction
Stage 4 – ART™ (Advance Recovery Technology™)
The ART™ is scale control media which conditions the water to reduce scaling
potential in water.
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 – 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 7 and Stage 8 – ZX Double Protection Dual filter*
This is a dual filter where water is passed through Silver Activated Post Carbon block
which acts as polisher and enhances the taste of water. In the final stage water is
passed through SCMT (Silver Charged Membrane Technology) filter which ensures
double purification of water making it Safe & Healthy for drinking.
A. O. Smith RO Water Purifier uses one of the latest technologies that is used in
water purification process. A. O. Smith RO 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.
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 RO Water Purifier removes excessive TDS (Total Dissolved Solids) in water
by more than 95%. A. O. Smith RO Water Purifier reduces heavy metals, removes
pathogens and balances the pH value. By this, it ensures you safe and great tasting
water.
Why water purification is important?
A. O. Smith RO Water Purifier has 8 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 Carbon block filter and ensures
efficient working of RO membrane.
 Stage 3 – Carbon block
The Carbon block 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.
How does A. O. Smith RO Water Purifier work?
04

Figure 1
Note: The Pre-filter and the Ball valve comes along with the product as standard accessories.
Stage 4 – ART™ (Advance Recovery Technology™)
The ART™ is scale control media which conditions the water to reduce scaling
potential in water.
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 – 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 7 and Stage 8 – ZX Double Protection Dual filter*
This is a dual filter where water is passed through Silver Activated Post Carbon block
which acts as polisher and enhances the taste of water. In the final stage water is
passed through SCMT (Silver Charged Membrane Technology) filter which ensures
double purification of water making it Safe & Healthy for drinking.
Pre-filter
Ball valve
05
* Patent Applied

A. O. Smith Water Purifier
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
Back View
Overflow water
Feed water inlet
Reject water
O I R
Rear Cover
06

This indicates flushing is in progress. Every time the water purification process is
activated, the auto flushing mechanism cleans the RO membrane. It enhances the life of
RO membrane.
Note: Call A. O. Smith Customer Care Centre if you notice continuous blinking of Auto-flush indicator.
Auto-flush indicator
Function of indicators
Tank full indicator
This indicates that the Water Purifier tank is full.
• When there is an overflow, the indicator starts to blink with continuous beep till it is
fixed.
Note: Call A. O. Smith Customer Care Centre if you notice continuous blinking of Tank full indicator.
This button is used to switch ON/OFF the Water Purifier.
• When the Power button is blinking, check feed water supply to the purifier.
Power Button
This indicates that the RO membrane needs to be replaced.
• RO change indicator starts blinking (buzzer 10 times) indicating that the RO
membrane life is reaching its end time.
• When RO membrane life reaches its end, RO change indicator keeps on blinking and
the unit stops functioning.
RO change indicator
Note: Call A. O. Smith Customer Care Centre to replace the RO membrane.
07

Note: Call A. O. Smith Customer Care Centre to replace the pre and post RO filter.
SCPA change indicator
This indicates that the pre and post RO filters need to be replaced.
• SCPA change indicator starts blinking (buzzer 10 times) indicating that the pre and
post RO filters life is reaching its end time.
• When pre and post RO filters life reaches its end, SCPA change indicator keeps on
blinking and the unit stops functioning.
08

Figure 3
Low Pressure
Switch
Pump
Flush
SV
Inlet SV
Lower
Level
Sensor
Upper
Level
Sensor
Driver Board
SMPS
150V - 300V
50 Hz
1- φAC supply
P
N24V DC
GND
Figure 4
Electrical diagram
Water flow
09
Faucet
Overflow water
Level 1 Sensor
Level 2 Sensor
Storage
Tank
MIN-TECHZX Dual
filter*
Pump RO
Sediment
filter
Carbon
Block
ART™
Tap
water
Pre-filter
Ball
Valve
Inlet water
3-way joint
Check
Valve
Low Pressure
Switch
Inlet Solenoid
valve
Flow
Restrictor
Flush
Solenoid
valve
Waste
water
Pure
water
* Patent Applied

Safety Precautions
Electrical safety
Figure 5
Power plug must be used with a
grounded 230V outlet. It is recommended
to connect the product to the power
supply only with the plug that is provided
with the purifier. (Figure 5)
Figure 6
Install the product away from direct
sunlight. (Figure 7)
Even though this product is designed keeping highest safety standards in mind, there are
certain Do’s and Don’ts which need to be followed while using this product.
Do not pull out or touch power plug with
wet hands to avoid electrical shock.
(Figure 6)
Figure 8
Make sure that the feed water is tested
before installation. Do not install the
product if the TDS and Hardness are more
than that prescribed in the recommended
feed water conditions (Refer page 19).
(Figure 8)
Figure 7
230V
CAUTION
TDS
METER
DANGER
10

Product should be installed only by
A. O. Smith Company Authorised Service
Technician. Do not open the purifier for
cleaning the filters or for any part
replacements. This must be done only by
A. O. Smith Company Authorised Service
Technician. (Figure 9)
Figure 9
Do not put heavy objects on the product.
(Figure 11)
Figure 11
Figure 10
Do not connect hot water to the product.
(Figure 10)
CAUTION
Heater
CAUTION
Figure 12
Do not put foreign objects or hand inside
the purifier. (Caution is needed, especially
for children). (Figure 12)
When it is used
Note: It is recommended not to switch off the Water Purifier and/or turn off the water supply to
the product when it has not been used for more than 24 hrs. The purifier has an inbuilt
cleaning mechanism which cleans the RO membrane every 24 hrs by flushing it. This
feature protects the RO membrane and ensures longer life.
CAUTION
11

How to use
Figure 13
Figure 14
1. Turn ON the water connection
through the ball valve. (Figure 13)
Figure 15
3. To dispense water from the storage
tank, turn the faucet knob in
anti-clockwise direction. (Figure 15)
2. Switch ON the power supply and press
the power button of the purifier.
(Figure 14)
Note:
• Discard the first cycle of pure water, before you start using it for consumption.
• Make sure to discard the water in the storage tank if you have not used the purifier for
more than 2 days.
ON
12

Figure 16
1. Remove the Cover Strip by pulling it
out gently from the main body.
(Figure 16)
2. Attach the Drip Tray assembly into the
main body through slots provided in
the main body. (Figure 17)
Figure 17
Attaching Drip Tray (optional)
Cover Strip
13

Draining Drip Tray
We have provided removable Drip Tray with the product. In case there is slippage of
water, it gets collected in Drip Tray.
Figure 18
1. Remove the Drip Tray assembly by
pulling it forward. (Figure 18)
Figure 21
3. Re-attach the Drip Tray assembly into the purifier. (Figure 21)
Figure 19
Figure 20
2. Remove Drip Tray cover by pulling it
upward and then drain completely.
(Figure 19)
2. Clean the surface of water tray with soft cloth. (Figure 20)
14

How to maintain your product
Figure 22
Do not splash water directly or clean with
benzene, pesticides, thinner, alcohol, etc.,
but use a soft, dry cloth to clean the
purifier. (Figure 22)
Figure 24
Use A. O. Smith genuine accessories only,
for optimal performance of the purifier.
(Figure 24)
Figure 23
Replace filters regularly according to the
replacement indications. This must be
done only by A. O. Smith Company
Authorised Service Technician. (Figure 23)
Benzene
RO
RO
15

Your A. O. Smith Water Purifier may not function at its desired capability if used
incorrectly. This may not necessarily mean that the product is faulty. For instances like
these, please follow the steps given below to troubleshoot the problem without help
from a certified technician. If the problem still persists, please call Customer Care Centre
immediately.
Troubleshooting
Problems Check-up Solution
Change in water taste. Has the purified water Drain the stored water from
been stored in the tank the storage tank through
a for long time? faucet.
RO membrane/filters may Call Customer Care Centre
require replacement. for RO membrane/filters
replacement.
Has the raw water quality Call Customer Care Centre.
changed?
Check if there is no water Switch OFF the Water
flow through reject line. Purifier and call Customer
Care Centre.
Decreased flow of RO membrane/filters may Call Customer Care Centre
purified water. be clogged or damaged. for RO membrane/filters
replacement.
Less/No reject water. Check if the reject water Clear the bent in the reject
tube is bent. water tube.
Check if the reject water Switch OFF the Water
tube is blocked. Purifier and call Customer
Care Centre.
Less/No purified water. Check whether there is If not, take the help of a
water supply in the tap. plumber to set it right.
Check whether tap/ball Open the tap/ball valve.
valve is closed.
Check if either RO change Call Customer Care Centre
or SCPA change is blinking. for replacement of filters.
None of the above. Call Customer Care Centre.
16

17
Buzzer beeps and Overflow error. Switch OFF the Water
tank full LED blinks Purifier and call Customer
continuously. Care Centre.
Buzzer beeps for 8 Low pressure alarm is Check feed water supply to
times and power LED triggered indicating that the purifier. If problem still
blinks continuously. the system input water persists, switch OFF the
pressure is not in the Water Purifier and call
required range. Customer Care Centre.
Buzzer beeps 10 RO membrane life ends. Switch OFF the Water
times, RO change Purifier and call Customer
LED blinks and unit Care Centre for
is not functioning. RO membrane
replacement.
Buzzer beeps 10 Pre and Post RO filters Switch OFF the Water
times, SCPA change life ends. Purifier and call Customer
LED blinks and unit Care Centre for Pre and
is not functioning. Post RO filters replacement.
Buzzer beeps Battery error. Switch OFF the Water
continuously and all Purifier and call Customer
LED (Power, Tank full Care Centre.
and Auto flush) blinks.
Buzzer beeps and Level sensor error. Switch OFF the Water
auto-flush LED blinks Purifier and call Customer
continuously. Care Centre.
Buzzer beeps 10 RO membrane life is Call Customer Care Centre
times, RO change about to end. for RO membrane
LED blinks and unit replacement.
is functioning.
Buzzer beeps 10 Pre and Post RO filters Call Customer Care Centre
times, SCPA change life is about to end. for Pre and Post RO filters
LED blinks and unit replacement.
is functioning.