A.O. Smith X4 User manual

Size: A5 [148.5 mm (W) x 210 mm (H)]
Part No.: 333770-000_R0
Date: 21-12-2015
SUPERIOR TECHNOLOGY FOR ADVANCED PROTECTION.
TM
USER GUIDE
www.aosmithindia.com
EXPERT COMPANY SERVICE
Toll Free No.: 1800-103-2468 or
SMS us: [phone] or
E-mail us: [email protected]
Monday to Friday: 9 am to 8 pm.
Saturday & Sunday: 9 am to 6 pm.
#For calls registered at A. O. Smith call centre before 4 pm only.
For more details please call our Toll Free No. 1800-103-2468
or log on to www.aosmithindia.com.
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 us from any phone,
anywhere in the country to our Toll Free Customer Care No. 1800-103-2468.
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

Contents
Key Features of your A. O. Smith RO 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............................................................................................................... 13
Draining drip tray..................................................................................................... 14
How to maintain your product................................................................................. 15
Replacing changeable panel..................................................................................... 16
Troubleshooting....................................................................................................... 17
Technical specifications ............................................................................................ 20
FAQs......................................................................................................................... 23
Warranty terms and conditions................................................................................ 25
Warranty card .......................................................................................................... 29
Service and maintenance ......................................................................................... 30
Disclaimer ................................................................................................................ 31
What’s in the box?
User Guide Mounting Accessories Tube & ConnectorsWater Purifier

ADVANCE UNIQUE 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.
PURITY THROUGH 5 STAGE PURIFICATION
5S TECHNOLOGY: Pre-filter + Sediment filter + Pre Carbon filter + RO Membrane +
Silver Activated Post Carbon. In A. O. Smith RO water purifier 100% of the water
passes through the RO membrane.
Key Features of your A. O. Smith RO water purifier
TWIN ADVANCE ALERT TECHNOLOGY
For Sediment + Pre Carbon filters and RO membrane + Silver Activated Post Carbon
change.
CONVENIENCE
Provision for both wall mounting and table top.
ADVANCED PRE-FILTER & SEDIMENT FILTER
For effective removal of suspended solids and sediment from water and to ensure
better life of RO membrane.
AESTHETICS
ColourMatch System®to suit your kitchen décor.
TANK OVERFLOW PROTECTION
Prevents water overflow from the tank.
LARGE STORAGE CAPACITY
Pure 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.
01

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 representative immediately.
About this Manual
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.
Pre-instruction Literature
02

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
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 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.
General Instructions
03
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

Introduction
04
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
microorganisms like bacteria, virus, protozoa and cysts.
Stage 5 –
Silver Activated Post Carbon
Water is passed through Silver Activated Post Carbon which acts as polisher and
enhances the taste of water.
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.
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.
• 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 90%. A. O. Smith RO water purifier reduces heavy metals and removes
pathogens. By this, it ensures you safe and great tasting water.
A. O. Smith RO water purifier has 5 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.
 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.
How does A. O. Smith RO water purifier work?

Figure 1
Note: The Pre-filter and the Ball Valve comes along with the product as standard accessories.
05
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
microorganisms like bacteria, virus, protozoa and cysts.
Stage 5 –
Silver Activated Post Carbon
Water is passed through Silver Activated Post Carbon which acts as polisher and
enhances the taste of water.
Pre-filter
Ball
valve

Product Overview
Figure 2
06
Rear
Cover
Overflow
water
R
Feed water
inlet
Reject
water
Back View
IO
Front View
Drip Tray
Cover
Faucet
Lever
Water
Level
Indicator
Display Panel
Indicators
Changeable
Panel
Top
Cover
Main
Body
Removable
Drip Tray

07
Function of indicators
Figure 3
RO
CHANGE
SC
CHANGE
TANK
FULL
AUTO
FLUSH
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 there is a leak in the water purifier, the power button starts to blink with
continuous beep till it is fixed.
• When the water pressure is lower than required water pressure limits, the power
button starts to blink continuously with beep sound for 10 seconds till the water
pressure becomes normal.
Note: Call A. O. Smith Customer care centre if you notice continuous blinking of Power light.
Power Button

Auto flush indicator
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.
RO change indicator
This indicates that the Silver Activated Post Carbon and/or RO membrane needs to be
replaced.
• RO change indicator glows when 10% life is remaining, indicating that it is time to
replace Silver Activated Post Carbon and/or RO membrane.
• When Silver Activated Post Carbon and/or RO membrane life reaches its end, this
indicator will start to blink continuously. The unit will not function until Silver
Activated Post Carbon and/or RO membrane are/is replaced.
• RO change indicator keeps blinking continuously with the buzzer beeping for 10
times every time the system is switched ON. The unit will not function until Silver
Activated Post Carbon and/or RO membrane are/is replaced.
Note: Call A. O. Smith Customer care centre to replace the Sediment filter and/or Pre Carbon filter.
This indicates that the Sediment filter and/or Pre Carbon filter needs to be replaced.
• SC change indicator glows when 10% life is remaining, indicating that it is time to
replace Sediment filter and/or Pre Carbon filter.
• When Sediment filter and/or Pre Carbon filter life reaches its end, this indicator will
start to blink continuously and the unit will not function until Sediment filter and/or
Pre Carbon filter are/is replaced.
• SC change indicator keeps blinking continuously with the buzzer beeping for 10
times every time the system is switched ON. The unit will not function until Sediment
filter and/or Pre Carbon filter are/is replaced.
SC change indicator
08
Note: Call A. O. Smith Customer care centre to replace the Silver Activated Post Carbon and/or RO
membrane.

Faucet
Overflow
water Level 1
Sensor
Level 2
Sensor
Storage
Tank
Low
Pressure
Switch
Flow
Restrictor
Tap
water Ball
Valve
Inlet water
3-way joint
Flush
Solenoid
valve
Inlet
Solenoid
valve
Waste
water
Silver
Activated
Post Carbon
Pump
Pure
water
RO
Sediment
filter Pre CarbonPre-filter
Check
Valve
Figure 4
Figure 5
09
Water flow
Electrical diagram
Low Pressure
Switch
Pump
SMPS
Inlet
SV
Flush
SV
Display
PCB
Water
Leakage
PCB
Upper
Level
Sensor
Lower
Level
Sensor
Reset
PCB
150V - 300V
50 Hz
1- φAC supply
P
N
Driver Board
24V DC
GND

Safety Precautions
Electrical safety
10
Do not pull out or touch power plug with
wet hands to avoid electrical shock.
(Figure 8)
Figure 6
Power plug must be used with a
grounded 230V outlet. (Figure 6)
Figure 7
Do not move the product when product is
running. (Figure 7)
Figure 8
Even though the product is designed keeping highest safety standards in mind, there are
certain Do’s and Dont’s which need to be followed while using this product.
Figure 9
Install the product away from direct
sunlight. (Figure 9)
Figure 10
Product should be installed only by A. O. Smith
Company authorised service technician.
(Figure 10)
CAUTION
230V
CAUTION
DANGER

11
Figure 14
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 14)
Figure 12
Connect the product to the power supply
only with the plug that is provided with
the purifier. (Figure 12)
CAUTION
Figure 11
Do not connect hot water to the product.
(Figure 11)
Heater
CAUTION
Figure 13
Do not use the purifier if the power cord
is damaged or you notice strange noise,
burning smell, or smoke. Switch off the
power, unplug the power cord
immediately and call Customer care
centre. (Figure 13)
CAUTION

12
Figure 17
Do not drink the water from the reject water tube. Reject water should not be consumed
in any form. (Figure 17)
When it is used
Figure 15
Figure 16
Do not put heavy objects on the product.
(Figure 15)
Do not put foreign objects or hand inside
the purifier. (Caution is needed, especially
for children). (Figure 16)
CAUTION
Waste
water
Reject
water tube
Note: It is recommended not to switch off the water purifier and/or turn off the water supply to
the product when it is not been used for more than 24 hrs. The purifier has an in-built
cleaning mechanism which cleans the RO membrane every 24 hrs by flushing it. This
feature protects the RO membrane and ensures longer life.

1. Turn ON the water connection
through the ball valve. (Figure 18)
13
How to use
Figure 18
3. To dispense water from the storage
tank, push and hold the water faucet
lever. (Figure 20)
Figure 20
4. To dispense water continuously, lift
up the water faucet lever for the
continuous water flow. To stop the
waterflow, pull down the water faucet
lever. (Figure 21)
Figure 21
Figure 19
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.
2. Switch ON the power supply and press
the power button of the purifier.
(Figure 19)
ON

14
Draining Drip Tray
Figure 22 Figure 23
1. Remove the Drip Tray assembly by
pulling forward. (Figure 22)
Figure 24
3. Clean the surface of water tray with a
soft cloth. (Figure 24)
We have provided removable Drip Tray with the product. In case there is slippage of
water, it gets collected in Drip Tray.
2. Remove Drip Tray cover by pulling
upward and then drain completely.
(Figure 23)
Figure 25
4. Re-attach the Drip tray assembly into
the purifier. (Figure 25)

15
How to maintain your product
Replace filters regularly according to the
replacement indications. This must be
done only by A. O. Smith Company
authorised service technician. (Figure 27)
Figure 26 Figure 27
Do not splash water directly or clean with
benzene, pesticides, thinner, alcohol, etc.,
but use a soft, dry cloth to clean the
purifier. (Figure 26)
Figure 28
Use A. O. Smith genuine accessories only,
for optimal performance of the purifier.
(Figure 28)
Benzene
RO
RO

Replacing the Changeable panel
16
1. Remove the Changeable panel by
pulling it out gently from the Top
Cover. (Figure 29)
Figure 29 Figure 30
Changeable
Panel
Top Cover
2. Insert new Changeable panel and
press gently to get it fixed into the
slot. (Figure 30)
Changeable
Panel
Slot