LG WW146RP Series User manual

OWNER'S MANUAL
WATER PURIFIER
Before beginning installation, read these instructions
carefully. This will simplify installation and ensure that the
product is installed correctly and safely. Leave these
instructions near the product after installation for future
reference.
ENGLISH
MFL72049201
Rev.01_010824
www.lg.com
Copyright © 2023-2024 LG Electronics Inc. All Rights Reserved.

TABLE OF CONTENTS
This manual may contain images or
content that may be different from the
model you purchased.
This manual is subject to revision by the
manufacturer.
SAFETY INSTRUCTIONS
READ ALL INSTRUCTIONS BEFORE USE...........................................................3
WARNING............................................................................................................3
CAUTION .............................................................................................................7
CARING FOR THE ENVIRONMENT....................................................................7
INSTALLATION
Before Installation ...........................................................................................10
Turning on the Power......................................................................................10
Final Installation Check ...................................................................................10
OPERATION
Before Use ........................................................................................................12
Product Features..............................................................................................13
Control Panel ....................................................................................................14
MAINTENANCE
Cleaning ............................................................................................................16
Replacing...........................................................................................................17
TROUBLESHOOTING
Before Calling for Service................................................................................20
APPENDIX
Water Piping Diagram.....................................................................................22
Product Information........................................................................................23
Warranty ...........................................................................................................25

3
SAFETY INSTRUCTIONS
ENGLISH
SAFETY INSTRUCTIONS
READ ALL INSTRUCTIONS BEFORE USE
The following safety guidelines are intended to prevent unforeseen
risks or damage from unsafe or incorrect operation of the appliance.
The guidelines are separated into ‘WARNING’ and ‘CAUTION’ as
described below.
Safety Messages
WARNING
WARNING
• To reduce the risk of explosion, fire, death, electric shock, injury or
scalding to persons when using this product, follow basic
precautions, including the following:
Technical Safety
• This appliance is not intended for use by persons (including children)
with reduced physical, sensory 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
This symbol is displayed to indicate matters and
operations that can cause risk. Read the part with this
symbol carefully and follow the instructions in order to
avoid risk.
WARNING
This indicates that the failure to follow the instructions can
cause serious injury or death.
CAUTION
This indicates that the failure to follow the instructions can
cause the minor injury or damage to the product.

4
SAFETY INSTRUCTIONS
responsible for their safety. Children should be supervised to ensure
that they do not play with the appliance.
• This appliance is intended to be used in household and similar
applications only. It should not be used for commercial, or catering
purposes, or in any mobile application such as a caravan or boat.
• If the power cord is damaged or the hole of the outlet socket is loose,
do not use the power cord and contact an authorized service centre.
• Do not locate multiple portable outlet sockets or portable power
supplies at the rear of the appliance.
• Securely plug the power plug in the outlet socket after completely
removing any moisture and dust.
• Never unplug the appliance by pulling on the power cable. Always
grip the power plug firmly and pull straight out from the outlet
socket.
• Keep ventilation openings, in the appliance enclosure or in the built-
in structure, clear of obstruction.
• Do not store explosive substances such as aerosol cans with a
flammable propellant in this appliance.
• Do not tilt the appliance to pull or push it when transporting.
• When positioning the appliance, ensure the supply cord is not
trapped or damaged.
• Do not spray water or inflammable substances (toothpaste, alcohol,
thinner, benzene, flammable liquid, abrasive, etc.) over the interior or
exterior of the appliance to clean it.
• Do not clean the appliance with brushes, cloths or sponges with
rough surfaces or which are made of metallic material.
• Only qualified service personnel from LG Electronics service centre
should disassemble, repair, or modify the appliance. Contact an LG
Electronics customer information centre if you move and install the
appliance in a different location.
• New hose-sets supplied with the appliance are to be used and that
old hose-sets should not be reused.
• Connect the water pipe of the appliance to potable water only.

5
SAFETY INSTRUCTIONS
ENGLISH
• Disconnect the power cord before cleaning the appliance interior or
exterior.
Installation
• This appliance should only be transported by two or more people
holding the appliance securely.
• Install the appliance on a firm and level floor/wall.
• Do not install the appliance in a damp and dusty place. Do not install
or store the appliance in any outdoor area, or any area that is subject
to weathering conditions such as direct sunlight, wind, rain, or
temperatures below freezing.
• Do not place the appliance in direct sunlight or expose it to the heat
from heating appliances such as stoves or heaters.
• Be careful not to expose the rear of the appliance when installing.
• Install the appliance in a place where is easy to unplug the power
plug of the appliance.
• Never start up an appliance showing any signs of damage. If in doubt,
consult your dealer.
• Do not connect a plug adapter or other accessories to the power
plug.
• Do not modify or extend the power cable.
• Do not use an extension cord or double adapter.
• Do not plug the appliance into a multi socket adapter which does not
have a power cable (mounted).
• Do not use a multi socket outlet which is not properly grounded
(portable). In case of using a properly-grounded multi socket outlet
(portable), use the multi socket outlet with the current capacity of the
power cord rating or higher and use the multi socket outlet only for
the appliance.
• The appliance should be connected to a dedicated power line which
is separately fused.
• Do not plug the appliance into multiple outlet sockets, power boards,
or an extension power cable.

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SAFETY INSTRUCTIONS
• Dispose of all packaging materials (such as plastic bags and
styrofoam) away from children. The packaging materials can cause
suffocation.
Operation
• If water penetrates electrical parts of the appliance, disconnect
power plug and contact an LG Electronics customer information
centre.
• Unplug the power plug during a severe thunderstorm or lightening
or when not in use for a long period of time.
• Do not touch the power plug or the appliance controls with wet
hands.
• Do not bend the power cable excessively or place a heavy object on it.
• Immediately unplug the power plug and contact an LG Electronics
customer information centre if you detect a strange sound, odour, or
smoke coming from the appliance.
• Do not place hands or metallic objects inside the area emitting the
cold air, cover or heat releasing grille on the back.
• Do not place heavy or fragile objects, containers filled with liquid,
combustible substances, flammable objects (such candles, lamps,
etc.), or heating devices (such as stoves, heaters, etc.) on the
appliance.
• Do not use flammable or combustible substances (ether, benzene,
alcohol, chemical, LPG, combustible spray, insecticide, air freshener,
cosmetics, etc.) near the appliance.
• If water is leaking from the inside of the appliance or water has
collected near the appliance, close the water supply valve, unplug the
power plug.
• Do not move the appliance while the appliance is plugged in.

7
SAFETY INSTRUCTIONS
ENGLISH
CAUTION
CAUTION
• To reduce the risk of minor injury to persons, malfunction, or damage
to the product or property when using this product, follow basic
precautions, including the following:
Operation
• Replace the filter with a LG standard filter periodically according to
the replacement period. Older filters can multiply bacteria or change
the taste of the water. The filter replacement period varies according
to the usage, place of usage, season, and water quality.
• Do not bend or pinch the water supply hose and drain hose.
• Do not allow pets, or any persons to hang from or climb on the
appliance.
• Prevent animals from nibbling on the power cable or water hose.
• This feature is only available on some models. The tempered glass on
the front side of the appliance can be damaged by an impact. If it is
broken, do not touch it with hands.
Maintenance
• This feature is only available on some models. Do not clean glass
covers with warm water when they are cold. They may shatter if
exposed to sudden temperature changes.
CARING FOR THE ENVIRONMENT
Disposal of Your Old Appliance (as per e-waste Rules)
1. When this crossed out wheeled bin symbol is depicted on
the product and its operator’s manual, it means the product
is covered by E-Waste Management Rules India published
by MoEF & CC, Govt. of India and are meant to be recycled,
dismantled, refurbished or disposed off.

8
SAFETY INSTRUCTIONS
2. Do’s
• a. The product is required to be handed over only to the authorized
recycler for disposal.
• b. Keep the product in isolated area, after it becomes non-functional/
unrepairable so as to prevent its accidental breakage.
Don’ts
• a. The product should not be opened by the user himself/herself, but
only by authorized service personnel.
• b. The product is not meant for re-sale to any unauthorized agencies/
scrap dealer/kabariwalah.
• c. The product is not meant for mixing into household waste stream.
• d. Do not keep any replaced spare part(s) from the product in
exposed area.
3. Any disposal through unauthorized agencies/person will attract
action under Environment (Protection) Act 1986.
4. This product is complied with the requirement of Hazardous
Substances as specified under E-Waste Management Rules India
published by MoEF & CC, Govt. of India.
5. To locate a nearest collection centre or call for pick-up (limited area
only) for disposal of this appliance, please contact No. 08069379999,
Toll Free No. 1800-315-9999 for details. All collection centre and pick up
facilities are done by third parties with LG Electronics India Pvt. Ltd.
Merely as a facilitator. For more detailed information, please visit :
http://www.lg.com/in.

9
SAFETY INSTRUCTIONS
ENGLISH

10
INSTALLATION
INSTALLATION
Before Installation
Notes for Installation
• Do not lean the appliance more than 30°. Doing
so can cause malfunctions.
• Keep a distance of 10 cm from front and sides of
the product.
• A cold water supply with water pressure
between 0.01 MPa and 0.86 MPa (0.1-8.8 kgf/
cm²) is required to operate this appliance.
• If you do not use the appliance for a while due to
moving, etc., store it in an environment where
water does not freeze.
- The appliance may malfunction due to
freezing.
• Install on a hard and level floor/wall.
- If the floor/wall of the installation site is
uneven, vibration or noise may occur, and the
appliance may fall over and cause injury.
• Places where installation should be avoided for
hygienic management of water purifiers and
prevention of condensation.
- Outdoors or in direct sunlight
- A place close to the toilet
- In front of air conditioner/heater
- Other places with high humidity or
temperature
• Height between immediate water reservoir tank
to water purifier inlet should be more than 1
meter for effective working of the product.
• For optimum performance of product,
installation condition should be
1 2000 mg/L
TDS, hardness
1 425 mg/L and turbidity 1 5 NTU.
NOTE
• All models can only be installed with water
supply from overhead storage tank. No other
water supply should be used for installation of
these models.
Ambient Temperature
• The appliance is designed to operate within a
limited range of ambient temperatures,
depending on the climate zone.
Install the appliance inside with a surrounding
temperature of over 5
7 and less than 43 7 .
Turning on the Power
Connecting the Appliance
After installing the appliance, connect the power
plug into the outlet socket.
NOTE
• Before moving and discarding the appliance,
disconnect the plug from the socket outlet.
Final Installation Check
Testing the Appliance
1 Make sure that hoses are connected properly.
2 After installation, discharge water for the first
time when water tank is full. Same process is to
be followed after every filter change or digital
sterilization. Appropriate time taken to fill the
tank to the fullest is 1 hour, depending on
water pressure, temperature, etc.
• Water may remain inside the water filtration
system due to the inspection process carried
out while manufacturing the appliance.
NOTE
• Do not connect the water supply pipe of the
appliance to the hot water pipe, and connect it
only to the cold water pipe.

11
INSTALLATION
ENGLISH
• When cutting the tube, cut it vertically to prevent
water leakage.

12
OPERATION
OPERATION
Before Use
General Notes
• If the appliance is not used for a long period,
discharge the stored water from water purifier
tank. If water has been left for a long period,
bacteria can be generated and water taste can
be changed.
• When you fill the cup with water, place it close to
the water tap. Water may splash out of the cup
and fall to the floor.
• Open the water supply valve. The appliance
operates normally when water is supplied
properly at a consistent pressure that is within
the operating requirement.
• It is very important to replace the filter
periodically in order to drink clean water. If an
expired filter is used, the water taste may be
changed and the filtration function may be
degraded.
• Do not use filtered water to replace water in a
humidifier or fishbowl. Leaving filtered water as
it is for a long period of time may multiply the
bacteria.
• Use the appliance only after closing the
appliance cover completely. Otherwise, insects
or other foreign substances may get in.
WARNING
• The RO (Reverse Osmosis) contains a
replaceable treatment component critical for the
effective reduction of TDS (Total Dissolved
Solids) and that product water shall be tested
periodically to verify that the system is
performing properly.
- Do not use with water that is microbiologically
unsafe or of unknown quality, without
adequate disinfection before or after the
system.
• If the product will not be used for 2 or more days,
unplug the power cord and close water supply
valve before leaving premises and drain the
water inside of water filtration system including
tank completely before consumption of water.
NOTE
• All models of water purifier comes with a unique
flow sensor which turns on only if there is
running water supply to water purifier.
- If no/lower water supply than specified limit is
available, then water purifier will stop for 15
minutes and later, runs again for few seconds
to check water supply.
- If water supply is detected, then water purifier
will work normally otherwise it will repeat to
check cycle again.
- If water supply is available and you want to
start water purifier immediately, must turn off
the power supply and wait until the display
gets turned off, and turn on the power again.
UV Sterilization
This feature is only available on some models.
UV Sterilization uses UV light to keep the water
clean.
•
UV Sterilization runs automatically for 75
minutes in every 6 hours. This function will
momentarily stop each time when tank cover is
opened if it is in operation and will resume after
tank cover is closed.
Suggestion for Energy Saving
• If the appliance is not used for a long period,
drain the remaining water completely and
unplug the power plug.

13
OPERATION
ENGLISH
Product Features
The appearance or components of the appliance
may differ from model to model.
Exterior
Front and Rear
a Tank Full Indicator
b Touch Lever
c Power Indicator
d Filter Cover
e Water Supply Hose
f Drain Hose
g Top Cover
h Power Cord
i Filter Change Indicator
*1
j UV Sterilizing Indicator
*2
*1 This feature is applicable for only out sediment
filter.
*2 This feature is only available on some models.
Accessories
a Mounting Bracket

14
OPERATION
b Adaptor
c Out Sediment Filter with Anti Scalant Module
d Mounting Plate (2 EA)
e Screw Kit
• Screw (6 EA)
• Anchor (6 EA)
• Teflon Tape (1 roll)
f Hose Assembly
• Hose (1 EA)
• Connector (2 EA)
• Locker (2 EA)
• Connector Pipe (1 EA)
*1
g Mounting Guide
*1 This feature is only available on some models.
Control Panel
The actual control panel may differ from model to
model.
Control Panel and Functions
a UV Sterilizing Indicator
Purified water is sterilized by the UV LED. When
UV LED indicator will glow, it indicates that UV
sterilization is
ON .
When tank cover is open, UV LED will be
automatically turned off for your safety.
NOTE
• The UV LED operates in any of the following 2
cases.
- It operates for 75 minutes in every 6 hours.
- It operates for 75 minutes after approximately
2 seconds when power is turned on following
a power failure.
• Disclaimer:
UV nano is a compound word derived from the
words UV and its unit, nanometre.
b Filter Change Indicator
This feature is applicable for only out sediment
filter.
When the color of indicator changes from blue
to amber, this indicates that it is time for
preventive maintenance service. Please call LG
customer care for service.
When the filter change indicator glows, it
indicates that it is time for preventive
maintenance service. Please call LG customer
care for service.
c Power Indicator
The Power LED glows to indicate
ON condition
of water purifier.
d Tank Full Indicator
When the water storage tank gets filled up
completely then tank full indicator will turn
ON .
Using Purified Water
When you press the touch lever, purified water will
come out.

15
OPERATION
ENGLISH
If you wish to discharge continuously, lift the touch
lever upward.
CAUTION
• Open this lever to 90 degrees only. Opening
more than 90 degrees may cause it to
malfunction/damage.

16
MAINTENANCE
MAINTENANCE
Cleaning
Cleaning the Storage Tank
1 Close the water supply valve.
2 Drain water inside the storage tank completely
using the drain hose and the water outlet.
3 Unplug the power cord.
4 Open the top cover by lifting it upward, and
then unlock the storage tank cover.
CAUTION
• Handle with care, sharp edges may cause injury.
• Do not put pressure or weight on tank cover, it
may cause damage or injury.
5 Wipe the surface of the storage tank with soft
clean cloth.
CAUTION
• Avoid touching any interconnecting part inside
water tank. It may cause damage to the product.
6 Rinse the storage tank with purified water/
halogenated solution like chlorine. Drain
completely once in four months. This would
help in prevention and control of biofilm
formation in the storage tank.
WARNING
• Take care of water spattering, it may cause
electric shock.

17
MAINTENANCE
ENGLISH
7 Insert and lock the storage tank cover.
8 Close the top cover, plug in the power cord and
open the water supply valve.
9 When tank is full, discharge water for the first
time. Approximately time taken to fill the tank
to fullest is 1 hour, depending on water
pressure, temp etc.
WARNING
• Unplug the power cord when cleaning the
storage tank. lt may cause electric shock.
CAUTION
• Clean the tank by only using purified water. Do
not use chemical except chlorine or detergent
for cleaning the storage tank. Chemical or
detergent will not be washed away completely, it
can be harmful to the human body.
Cleaning the Water Outlet
Clean the water outlet periodically using a soft
clean brush. Fur or foreign substances may
accumulate in the water outlet.
Replacing
Replacing the Water Filter
Process of Purification
Drinking water
• Step 1 a
Out sediment filter with anti scalant module
- Remove big particles, rust stains, mud etc. and
reduce input water hardness to enhance filter
life.
• Step 2
b
Sedi + carbon filter
- Remove unseen dregs and other
contamination. Remove invisible fine
particles, residual chlorine, VOC (Volatile
Organic Compounds) etc.
• Step 3
c
RO membrane filter
*1
, RO recovery filter
*1
, RO
recovery plus filter
*1
- Remove dissolved impurities, heavy metals,
bacteria, viruses, VOC etc. from water.
- TDS reduction up to 90% ppm of source water.
• Step 4
d
Mineral booster filter
*1
- Remove odour, add minerals in the purified
water without mixing impure water.
Post carbon filter
*1
- Remove odor and improves taste of water.
*1 Features and specifications may vary from
model to model.

18
MAINTENANCE
NOTE
• Do not use water drained from the product for
drinking or cooking.
• Use the water instead for cleaning the bathroom
and house, gardening or for other various
purposes.
• Activated carbon inside the filter may sometimes
flow in the storage tank. If so, a fine powder of
activated carbon used in the post-carbon filter
has come out, and it is harmless to the human
body. If found, drain out the water from tank
completely.
Filter Replacement Period
The filter replacement period refers to the period
that the purification performance of the filter is
maintained. And the replacement period is lesser
in the case of a place with poor water quality or a
large purification amount.
*1 This is as per LGEIL standard.
WARNING
• Filter replacement and /or AMC request can only
be placed via calling LG customer care (refer last
page).
• Warranty shall be void in case of use of
counterfeit (duplicate) filters or replacement of
filters from unauthorized sources.
• Using counterfeit filters or procuring filters from
unauthorized sources may negatively impact or
degrade product performance and product life.
It may not be safe drinking water and may also
impact user's health.
• LG shall not be responsible for any damage
arising directly or indirectly out of any defect
being noticed in the product due to usage of
such counterfeit filters.
CAUTION
• Out sediment filter may get choked in abnormal
turbidity (sand and mud) condition, it is
suggested to switch
ON water purifier after 1-2
hour of overhead tank filling so that sand/mud
will get settled. Out sediment filter should be
cleaned regularly to prevent choking in above
condition for better performance. Life of filter
may get affected by high turbidity and hardness
of water.
NOTE
• If you wish to replace the filter, contact LG
electronics customer care.
• After replacing the filter, check if there is a leak
from the product.
• After installation, discharge water for the first
time when water tank is full. Same process is to
be followed after every filter change or digital
sterilization. Approximate time taken to fill the
tank to the fullest is 1 hour, depending on water
pressure, temperature etc.
• For RO membrane filter, around 25% (WW130,
WW140, WW142, WW151, WW152, WW155) of
supplied water (based on the tap water pressure
of 3.5 kgf/cm
2
(0.34 MPa) at water temperature
of 25
7 and Input TDS up to 750 mg/L) will be
purified.
• For RO recovery plus filter, around 60% (WW174,
WW175) of supplied water (based on the tap
water pressure of 1.5 kgf/cm
2
(0.15 MPa), up to
750 mg/L TDS at water temperature of 25
7 ) will
be purified and remainder will be drained.
• For RO recovery filter, around 45% (WW156) of
supplied water (based on the tap water pressure
of 1.5 kgf/cm
2
(0.15 MPa), up to 750 mg/L TDS at
Filter name
Recommended
purification amount
(in litres)
*1
Out sediment filter +
Anti scalant module
3000
6000
Sedi + carbon filter 6000
RO membrane filter,
RO recovery filter,
RO recovery plus filter
6000
Mineral booster filter 6000
Post carbon filter 6000

19
MAINTENANCE
ENGLISH
water temperature of 25 7 ) will be purified and
remainder will be drained.
• No chemical preservatives used in membrane.

20
TROUBLESHOOTING
TROUBLESHOOTING
Before Calling for Service
Water
Dispensing
Symptoms Possible Cause & Solution
Water tastes strange. Have you left the water purifier for a period of 2 or more days without
using it?
• The taste of water may change as it ages. Use the water purifier after
discharging the tank one time. In case issue persists please contact LG
customer care service.
Have you installed the appliance long ago or not changed filter for a
long period?
• If the filter is not replaced regularly, the water quality of the appliance will
deteriorate. Replace a new water filter.
Fine particles occur in
the filtered water.
Did water bubbles form?
• Water bubbles may form in the draining process. It is safe for you to drink.
• If fine particles exist continuously after you receive water from the water
purifier and several minutes have passed, cut off the tap water supply and
power supply and contact LG customer care service.
Symptoms Possible Cause & Solution
Water does not
dispense.
Did you shut off the valve located at the connection to the water source?
• Open the valve.
Did you unplug the power plug from the outlet socket?
• Plug the power plug into the outlet socket correctly.
Did you miss the filter replacement period?
• Request for filter replacement.
Does water not come out when you press the discharge lever?
• Contact LG customer care service.
The purification
amount has reduced
suddenly.
Is it time to replace the filter?
• Request for filter replacement.
Is the water supply valve closed?
• Open the water supply valve.