KENT Mineral RO SterlingStar User manual

Marketed by:
KENT RO SYSTEMS LTD.
E-6, 7 & 8, Sector-59, Noida, U.P.-201 309, India.
E-mail: [e-mail] | Website: www.kent.co.in
Manufactured by:
KENT RO SYSTEMS LTD.
1) Khasra No. 93, Village-Bantakhedi, Tehsil-Roorkee,
District-Haridwar, Uttarakhand-247 668, India.
2) A-6, Sector-87, Noida-201 305, U.P., India.
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E-6, 7 & 8, Sector-59, Noida, U.P.-201 309, India. Call: 92-789-12345
E-mail: [e-mail] or visit us at www.kent.co.in
Piyo Aur Healthy Raho
Piyo Aur Healthy Raho
SINGLE CABINET
Built-in Hydrostatic Tank
• Very high purification capacity 25l/hr
• 6l in-built storage tank
• Smart space-saving design
• Helps maintain décor of your kitchen
Sterling Star
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RO+UV+UF+TDS Control
Digital Display of Minerals and Purity

to KENT
1. KENT TECHNOLOGY - A Breakthrough in Water Purification 1
2. Salient Features 2
3. Items in the Box 2
4. Important Instructions 3
5. Reverse Osmosis Process 4
6. UV Process 4
7. Water Flow Diagram 5
8. Electrical Circuit Diagram 5
9. Sterling Star Operations 6
10. Automatic Operation 9
11. Installation Instructions 9
12. TDS Adjustment 10
13. Starting-up the Purifier 10
14. Recommended Usage of Rejected Water 10
15. Maintenance 11
16 Important Safety Instructions 11
17 Warning 12
18 Technical Specifications 12
19. Testing Information 12
Table of Contents
Dear Customer,
Welcome to the world of the KENT, leaders of water purification
industry in India. With a KENT product, you have all the reasons to
smile, because at KENT we take pride in the quality and
laboratory-tested performance of our products.
We are confident that your decision to own KENT Sterling Star
Mineral RO™Water Purifier will go a long way in serving you with
pure and mineral enriched drinking water, thus keeping you and
your family in good health. We assure you that you will be satisfied
with its trouble-free performance and quality which comes without
any compromise.
This manual is an effort towards familiarising you with the operation
and maintenance of KENT Sterling Star Mineral RO™Water
Purifier. Before operating the unit, please read it thoroughly and
retain it for future reference. To ensure that the warranty of your
water purifier is effective, fill up the enclosed warranty card and
send the installation report within 15 days of purchase. Should you
need further assistance, do not hesitate to contact your nearest
KENT dealer or branch.
Best Wishes,
KENT RO SYSTEMS LTD.

KENT TECHNOLOGY - A Breakthrough in
Water Purification*
KENT proudly presents KENT Sterling Star Mineral ROTM Water Purifier - a
new and advanced domestic water purifier which provides pure & healthy drinking
water .
The futuristic KENT Sterling Star Mineral ROTM Water Purifier, developed
at KENT Laboratory broadly comprises of state-of-the-art RO+UV+
UF+TDS+Digital Display of minerals and purity Control System. The initial
purification by RO membrane having porosity as fine as 0.0001 microns
reduces even the dissolved impurities (hard salts, heavy metals, etc.). Double
purification by UV membrane gives additional protection from deadly harmful
micro-organisms. Moreover, the patented TDS Control System intelligently
retains essential natural minerals in purified water, thus taking total care of
your health and wellbeing.
* Tested & certified by TUV-SUD South Asia (P) Ltd.
1 2
Salient Features of KENT Sterling Star Mineral ROTM Water Purifier
1. Compact single cabinet design
for under-the-counter
placement.
2. Purification by RO+UV+UF+TDS
control makes water pure.
3. Retains essential natural
minerals in water with TDS
Control Valve.
4. Real time monitoring and display
of purity on a digital screen.
5. 6 litres inbuilt hydrostatic
storage tank makes purified
water available on demand.
6. Fully automatic operation with
auto-on/off.
7. Suitable for brackish / tap water/
municipal water supply.
8. Suitable for purification of
blackish/tap water/municipal
corporation water supply.
9. Tamper-proof RO Purifier.
10. Membrane fused inside
membrane housing.
11. Ideal for under-the-counter as
well as side-by-side placement
adjacent to refrigerator.
12. Computer controlled operations
for enhanced purity and long life.
13. Very High Purification capacity of
25l/hr
1 KENT Sterling Star Mineral ROTM Water Purifier : 1 N
2 3-Way Connector : 1 N
3 S.S. Ball Valve : 1 N
4 Faucet : 1 N
5 Instruction Handbook : 1 N
6 Food Grade Pipe ¼” (Blue) : 2.5 m
7 Food Grade Pipe ¼” (White) : 2.5 m
8 Food Grade Pipe
3/8
” (white) : 2.5 m
*Tested & certified by TUV-SUD South Asia (P) Ltd.
Items in the Box

Reverse Osmosis Process
Reverse Osmosis process, also known as hyper
filtration, is the finest filtration process known
till date. It ensures reduction of particles as
small as ions from a solution. Reverse
Osmosis process uses a semi-permeable
membrane to reduce salts from potable/
brackish water. In Reverse Osmosis, water
pressure is applied to the inlet impure water
resulting in squeezing of pure water from the
concentrated end of membrane towards the
diluted end. Dissolved salts present in water as charged ions, get repelled by
the RO membrane and are not allowed to pass through. Similarly, bacteria
and germs are also blocked by the ultra fine pores of the RO membrane.
These rejected impurities suspended on the concentrated end of the
membrane are
washed away in a stream of waste water, preventing the
membrane from clogging.
UV Process
The UV light has shorter wavelength (higher energy) than the visible light. It is
called ultra-violet because it is just beyond violet light in the light spectrum.
Technically, the ultra-violet light is defined to be any wavelength of light,
which is shorter than 400 nanometer. UV rays, which penetrate into the
micro-organisms, are absorbed by the DNA of the pathogen in the water. The
DNA is altered in such a way that the pathogen cannot reproduce itself. Thus,
it is essentially killed and cannot cause infection. This process of DNA
modification is called inactivation.
3 4
Important Instructions
Avoid exposure to direct
sunlight and installation in
damp areas.
Make sure that the purifier is
connected to normal
temperature water supply only.
Avoid sharpbends in pipes.
Maximum distance between
the
water source and purifier
should not be more than 3 meters.
Make sure that the rejected water
pipe is not placed at a level higher
than the purifier, otherwise rejected
water may flow backwards into
the purifier.
10 M
Water Source Water in
Do not try to service the purifier on your own.
Instead, call service technician for help.
Use Genuine KENT spares for optimum performance.
KENT
Rejected Water
Drain
To keep the storage tank clean,
it should be drained once in 15 days.
In case of not using the purifier for more than
two days, kindly switch off the power supply
and drain out the storage tank.
Do not confine the
purifier in a cabinet.

5
Water Flow Diagram
Electrical Circuit Diagram
It is certified that KENT RO Water Purifier purchased as under
w.e.f. 1
st
Jan. 2018 carries 1 Year Warranty + 3 Years of Free Service*.
(Visit/Service charges will not be charged, however parts if replaced shall be charged)
Serial No. ....................................................................
Purchase Date.........................................................Installation Date........................................
Service Provider’s
Name & Address
with Stamp
Marketed by: KENT RO SYSTEMS LTD.
E-6, 7 & 8, Sector-59, Noida, U.P.-201 309, India. E-mail: [e-mail] | Website: www.kent.co.in | Customer Care: 92-789-12345
*To avail this scheme of 3 Years of Free Service,
customer must download the KENT Service App at the
time of installation. Also future service request must
be raised via KENT Service App to avail free service.
Terms & Conditions applicable are mentioned overleaf.
To request for service 24x7,
download KENT Service App
To speak to customer care executive call: 92-789-12345
by scanning
the QR code
or by giving
a missed call:
9212252852
*
Product: KENT Sterling Star
Product Code: 11139
5
Raw Water
Reject Water
1
2
3
4
7
9
8
13
14
15
11
10
12
6
16
ITEM DESCRIPTION
S.NO. SP - CO.
1
2
3
4
5
6
7
8
9
10
11
12
SEDIMENT FILTER
SOLENOID VALVE
ACTIVATED CARBON FILTER
LOW PRESSURE SWITCH
BOOSTER PUMP
20035
20010
20028
20005
20009
20758
20386
20036
1
2
3
4
5
6
7
8
9
10
11
12
UF FILTER
RO MEMBRANE SHF
FLOW RESTRICTOR TUBE
HYDROSTATIC STORAGE TANK
HIGH PRESSURE SWITCH
20034
20020
NON RETURN VALVE
20058
20003
13
FAUCET
20183
14
15
20015 POST CARBON FILTER
20541 UV CHAMBER
TDS CONTROL VALVE
TDS SENSOR
20441
16
SMPS
P
N
+
-
LPS
BALLAST
24VDC
PUMP
SOLENOID
VALVE
UV CHAMBER
LED
DISPLAY
TDS
SENSOR
HPS
2
3
1
5
10
9
11
7
84
Single Phase
100-250 V AC, 50-60 Hz.
6
1
2
3
4
5
6
7
ITEM DESCRIPTION
1
2
3
4
5
6
7
8
9
S.NO.
8
9
10
SPARE PART CODE
11
LOW PRESSURE SWITCH (LPS)
SOLENOID VALVE
BOOSTER PUMP
COMPUTER CONTROL BALLAST
UV CHAMBER
PUMP HEAD
UV LAMP
20035
20028
20005
20059
20541
20540
TDS SENSOR
20441
LED DISPLAY
SMPS
20016
21869
21870
HIGH PRESSURE SWITCH
20036

KENT RO SYSTEMS LTD.
E-6,7 & 8, Sector-59, Noida, U.P.-201 309, India.
Ph.: 92-789-12345
E-mail: service
@
kent.co.in | Website: www.kent.co.in
Terms & Conditions of Warranty
KENT warrants all new products manufactured by it to be free from defects in material and workmanship under
normal usage and service from the date of purchase as under:
1. It is essential for the customer to download the
KENT Service App either on Android or iOS and the
customer should lodge a service request via App
only.
2. In case of emergency during the warranty period,
the customer may lodge a service request at our
Call Centre Ph. 92-789-12345.
3. The warranty period commences from the date of
installation by the first end-user. During this
warranty period of one year, KENT Purifiers or its
Authorised Service Provider (ASP) will replace or
repair any part of KENT Purifiers, that in the opinion
of KENT Purifiers or its ASP, would be defective in
operation due to faulty material or workmanship
(i.e. manufacturing defects) with the exception of
consumables such as Sediment Filter, Carbon Filter
and RO/UF Membrane. However, if the RO/UF
Membrane gets clogged within first one year and/or
if the filters get clogged within first six months, they
shall be cleaned / repaired / replaced at no extra
charge.
4. In addition to this, KENT will also provide free
service for a period of next 3 years, wherein
Visit/Service charges will not be charged, however
parts if replaced shall be charged.
5. Visit/Service charges will not be charged only for
customers residing within 25kms of municipal
limits, for other areas additional charges shall be
applicable.
6. The product's plastic body is not covered under
warranty and hence, it must be handled with care to
guard against breakage.
7. The original purchaser of the unit can avail services
under warranty at the point of sale, by producing the
damaged part(s) along with the original invoice.
8. This warranty is void if the unit is not operated under
normal municipal water or well water conditions or
is subjected to the temperature above 40°C.
9. Product returned to KENT Purifiers or its ASP for
warranty examination must be shipped freight
prepaid.
10. KENT Purifiers or its ASP shall not be held liable for
claims exceeding the cost of repair of the defects in
workmanship.
11. This warranty agreement shall not be interpreted to
render KENT Purifiers or its ASP liable for injuries
or damages of any kind-direct, consequential or
contingent to persons or property.
12. KENT Purifiers or its ASP shall not be held
responsible by representative or buyer for failure to
abide by any of the obligations of this warranty
agreement if such failures are the result of
circumstances of Forces Majeures: such as, but not
limited to, floods, earthquakes, transportation
strikes, labour disputes with outside suppliers or
any other conditions beyond the control of KENT
Purifiers or its ASP.
13. KENT Purifiers or its ASP shall not be held liable for
repair or alterations made without prior written
approval; for products clogged by suspended
matter, precipitates or biological growth; or for
failures resulting from the lack of proper
maintenance.
14. KENT Purifiers or its ASP cannot and shall not be
held liable for any sickness or illness due to the
consumption of drinking water from any water
purifier supplied by KENT Purifiers, since KENT
Purifiers or its ASP does not have any control over
the maintenance and usage of water purifier.
15. This warranty agreement excludes all products/
component parts or damage to any part of this
water purifier which, in the opinion of KENT
Purifiers or its ASP, have been subjected to misuse;
misapplication; negligence; alteration; accident or
operation contrary to our instructions,
incompatibility with accessories not installed by
KENT Purifiers or its ASP, or that have been
repaired with component parts other than those
manufactured by or obtained from KENT Purifiers
or its ASP. Damage caused by freezing, flood, fire or
Act of God is not covered by this warranty. In all such
cases regular charges will apply. This limited
warranty does not include service to diagnose a
claimed malfunction in this unit.
16. KENT Purifiers reserves the right to alter or
improve design and specifications at any time,
without any contingent obligations to prospective
buyers or owners of the products previously sold.
17. Any disagreements and obligations based upon the
purchase of KENT Purifiers products and thereby
imposed on KENT Purifiers or its ASP shall be
governed by and construed according to the laws of
INDIA and subject to the jurisdiction of Delhi Courts
only.
18. KENT Purifiers or its ASP assumes no warranty
liability in connection with this water purifier other
than that specified herein. This warranty is in lieu of
all other warranties, expressed or implied,
including warranties of fitness for a particular
purpose. KENT or its ASP does not authorise any
person or representative to assume for them any
other obligations on the sale of this water purifier.
19. Under no circumstances, the liability of KENT
Purifiers or its ASP shall exceed the value of the
product.
20. Under no circumstances are the terms mentioned
above negotiable and no employee of KENT
Purifiers or its ASP has the authority to supersede
them.
Why is it essential to download the KENT Service
Application?
1. Customer can lodge a service request/complaint
anytime (24x7).
2. The customer can track/monitor the progress
of service request/complaint.
3. Complete case history of the services done
can be viewed.
4. Regular feedback & offer details on the App.
To download the App
scan the QR code

6
KENT Sterling Star
HIGH
GOOD
LOW
FAILURE
1. Filter Life Indicator
2. Kent Logo
3. Mineral Content In Purified Water
4. Warning Indicator
5. Service Help line number
Under normal runing condition and without
any fault, the users will be greeted with a
screen as shown in figure
If the TDS level in the purified water is within
the permissible range, the indicator would be
in green Zone i.e Good
Screen Explained
Normal Runing Condition
Mineral Content - Good
21
3
4
5
GOOD
GOOD
HIGH
Mineral Content - High
If the TDS level in the purified water is more
than permissible range, the indicator would be
in Red Zone. i.e High
Sterling Star Operations

87
LOW
FAILURE
GOOD
Mineral Content - Low
No Input Water1
If the TDS level in the purified water is less
than permissible range, the indicator would be
in Yellow Zone. i.e Low
In case of no water input, Kent logo will be
blinking, that means no water input
FAILURE
FAILURE
HIGH, GOOD & LOW TDS bands will be blinking
Service call number will be continuous ON. No
Buzzer Sound for TDS Sensor Fault
Failure and Call Service Icon will be ON
Continuous. Buzzer will beep twice at an interval
of 9 Secs for 50 cycles. After 50 cycles buzzer
will go OFF
TDS Sensor Fault
UV Lamp Open/ Not present
FAILURE
Failure and Call Service Icon will be ON
Continuously.
UV Fault:
Buzzer will beep continuously @ 50mSec
ON,1.5Sec OFF rate.
Inlet SV or RO Pump Fault:
Buzzer will beep continuously @ 50mSec
ON,1Sec OFF rate.
AF SV Fault:
Buzzer will beep continuously @ 50mSec ON,
0.5Sec OFF rate.
Service call number will be continuous ON. Filter
life last bar will be blinking
Buzzer will beep for 4 times at an interval of 2
seconds once for 30 seconds. This will repeat in
every 2 Hrs
Call service engineer for help
Service call number will be continuous ON. Filter
life all bars will be blinking
If Product is in standby mode then Buzzer will
turn ON continuous
Call service engineer for help
UV tube/ Inlet SV or RO
Pump/ Auto Flush SV Fault
Filter Replacement Pre Indication
End of Filter Life Lock
FAILURE

9 10
• The purifier automatically shuts
off when the storage tank is full
• The purifier does not start when
inlet water supply pressure falls
below 0.3 kg/cm2
• The purifier automatically
restarts when water level drops
below the maximum
• The purifier doesn’t allow any
water rejection in absence of
electricity or when the tank is full
Automatic Operation
Recommended Site Preparations:
• Single Phase 100-250 V AC, 50-60 Hz.
supply, not more than 3 m away
from the point of installation
• Raw water supply with ½ inch
nipple not more than 3 m away
• Drain for reject water not more
than 3 m away
• Installation space as per the
dimensions of the purifier
• For optimum inlet pressure,
source water tank should be at
least 10 ft above the installed
purifier
• Install the purifier near a sink for
easy availability of inlet and reject
water lines
• The system and installation need
to comply with state and local
laws and regulations
Installation Instructions
KENT Sterling Star Mineral ROTM Water Purifer is a convenient and
user-friendly under-the-counter model.
TDS Adjustment*
The unique TDS Controller enables customers to retain the contents of
natural minerals in purified water, as per their requirement.
• Turning the screw of the valve
anticlockwise, results in an
increased mineral content
• Turning the screw of the valve
clockwise results in a decreased
mineral content
• Switch on the power supply
• Wait approximately for half an
hour so that the storage tank
is full**
• Switch off the power supply
• Drain off the storage tank by
opening the faucet to remove any
dust particles from the pipe and
storage tank
• Close the faucet & switch on the
power supply
• The purifier is ready to use
Starting-up the Purifier
Recommended Usage of Rejected Water
Although the rejected water has high concentration of salts, it is
absolutely clean and free from impurities like chlorine, dirt, sand, etc.
This rejected water usually goes down the drain, but it can be used for
gardening purposes. The high concentration of salts and minerals
accelerate plant growth. Rejected water can also be used for cleaning
utensils, mopping, etc.
* Tested & certified by TUV-SUD South Asia (P) Ltd.
**Tested & certified Flushing Time - 24 Hours.
Installation Procedure:
• Fix the SS ball valve to the ¼ inch port of the 3-way connector
as shown in the figure
• Connect the 3-way connector to the raw water supply as
shown in the figure. The threaded end of the 3-way connector
is fit in–line with the raw water supply. The other end can be
connected to a tap or plugged off, if not required
• Now connect one end of the white pipe 3/8”to the SS ball valve
and other end to the lower pushfit elbow fitting on the back
side of the purifier labeled as ‘Water In’
• Similarly, connect one end of the blue pipe to the fitting
connector labeled as ‘Reject Water’ and leave the other end
in the drain
Use blue pipe for reject water.
We recommend keeping the TDS at the lowest possible level but not below 50mg/l.
• Install the faucet on the kitchen sink or the slab. Connect one
end of the white pipe ¼” to the faucet
and the other end to the fitting connector labeled
as ‘Faucet’
• Before connecting the power supply, it is important that you
perform the following functions:
i Open the SS ball valve (Handle parallel to the ball
valve) to start the flow of water into the purifier
ii Wait for 2-3 minutes to ensure that the filters are
soaked in water

1211
Maintenance
To ensure that the purifier operates at its best, a routine maintenance
must be performed. The frequency of the maintenance will greatly
depend upon the raw water quality and consumption of purified water.
• Storage tank must be drained
once in a week
• Replace sediment filter and
activated carbon filter once in
12 months or earlier if they get
clogged. It is recommended to
change the FRT along with
the filters
• Replace RO membrane once in
a year or earlier if it gets clogged
• Replace UV lamp once a year
• In the event of not using the
purifier for a long time (while
going for a holiday, tour, etc.),
ensure that you disconnect the
power supply, turn off the raw
water supply and drain out the
storage tank
Replacement of spare parts are as under:
-20010 SP Inline Sediment Filter 8"
-20009 SP Inline Carbon Filter 8"
-20758 SP RO Membrane SHF
-20015 SP Post Carbon Filter (Blue)
-20003 SP Hollow Fibre Membrane (RO)
-20020 SP FRT 300/450
Note: Filters and membranes are consumables. Their replacement time is
dependent on the quality of raw water and water consumption. They are not
covered under the warranty. However, if a filter chokes within six months
and a membrane within a year, it will be cleaned/repaired/replaced free of
cost. Changing the filters and system inspection is available on call. The
treatment capacity of RO membrane will reduce with time due to clogging of
pores of membranes.
This reverse osmosis system contains a replaceable component critical to
the efficiency of the system. Replacement of the reverse osmosis component
should be with one of identical specifications as defined by the manufacturer,
to ensure the same efficiency and contaminant reduction performance.
* Purification capacity tested for raw water having TDS level of 750 ppm at room temperature.
Technical Specifications
Testing Information
The System has been tested according to IS 10500:2012 (Standards for drinking water as per
Bureau of Indian Standards) for reduction of the hazardous substances.
Important Safety Instructions
Warning
1. If the supply cord is damaged, it must be replaced by the original part in
order to avoid hazard.
2. Children should be supervised to ensure that they do not play with
the appliance.
3. This appliance is not intended for use by persons (including children) with
reduced physicasensory or mental capabilities, or lack of experience and
knowledge, unless they have been given supervision or instruction
concerning use of the appliance by a person responsible for their safety.
• Do not operate the UV-C emitter when it is removed from the appliance
enclosure.
• Read the maintenance instructions before opening the appliance.
• The appliance must be disconnected from the supply before replacing
the UV-C emitter.
Product
Product Code
Product Generic Name
Product Colour
Applications
Purification Production Rate
Body Material
Mounting
Dimensions (mm)
Inlet Water Pressure / Temp. (Min.)
Inlet Water Pressure / Temp. (Max.)
Min./Max. Operating pH
Filter Cartridge
UV Lamp Wattage
Life of UV Lamp
UF Membrane
RO Membrane
Storage Capacity
Maximum Duty Cycle
Net Weight
Booster Pump Voltage
Total Power Consumption
Input Power Supply
IP Number
KENT Sterling Star
11139
Water Purifier
White
Suitable for Brackish/Tap Water/Municipal Water Supply
Upto 25 l/hr.*
ABS Food Grade Plastic
Under-the-counter
455 (L) x 245 (W) x 420 (H)
0.3 kg/cm2»&
4.0 kg/cm2»&
6.5-8.0
Sediment, Activated Carbon, UF and Post Carbon
11 W
5000 hrs. of operation
0.01-0.1 microns
Thin Film Composite RO
6 Litres
125 l/day
12.1 kg
24V DC
60 W
Single Phase 220±250 V, AC, 50 Hz.
IPX1