42 MAINTENANCE
Application Guidelines/Water Supply 
Parameters
Service Flow 0.5 gpm (1.9 lpm)
Water Supply
Community or Private Well - 
Potable Water
Water Pressure 20 – 120 psi (138 – 827 kPa)
Water Temperature
33 °F – 100 °F (0.6 °C – 37.8 
°C)
Capacity 200 gallons (757 liters)
It is essential that the manufacturer’s recommended 
installation, maintenance and lter replacement 
requirements be carried out for the product to perform 
as advertised.
NOTE
 • While the testing was performed under standard 
laboratory conditions, actual performance may vary.
Replacement Cartridge: ADQ74793501(LT1000P)
NSF System Trade Name Code: MDJ64844601
For replacement lters, visit your local dealer or 
distributor or search under "water lters" on the 
lg.com website.
For further assistance, the LG Electronics Customer 
Information Center is open 24 hours a day/7 days a 
week.
USA: 1-800-243-0000
Canada: 1-888-542-2623
LG is a trademark of LG corp.
NSF is a trademark of NSF International.
Manufactured for LG
®
 Electronics by:
LG Electronics, INC
170, Sungsanpaechoungro, Seongsan-gu,
Gyeongsangnam-do, THE REPUBLIC OF KOERA
WARNING
To reduce the risk associated with choking:
 • Do not allow children under 3 years of age to 
have access to small parts during the installation 
of this product.
To reduce the risk associated with the 
ingestion of contaminants:
 • Do not use with water that is microbiologically 
unsafe or of unknown quality without adequate 
disinfection before or after the system. Systems 
certied for cyst reduction may be used on 
disinfected water that may contain lterable 
cysts. EPA Establishment # 070595-MEX-001
CAUTION
To reduce the risk associated with property 
damage due to water leakage:
 • Read and follow Use Instructions before 
installation and use of this system.
 • Installation and use MUST comply with all state 
and local plumbing codes.
 • Do not install if water pressure exceeds 120 psi 
(827 kPa). If your water pressure exceeds 80 
psi, you must install a pressure limiting valve. 
Contact a plumbing uncertain how to check your 
water pressure.
 • Do not install where water hammer conditions 
may occur. If water hammer conditions exist you 
must install a water hammer arrester. Contact a 
plumbing professional if you are uncertain how to 
check for this condition.
 • Do not install on hot water supply lines. The 
maximum operating water temperature of this 
lter system is 100 °F (37.8 °C).
 • Protect lter from freezing. Drain lter when 
temperatures drop below 40 °F (4.4 °C).
 • The disposable lter cartridge MUST be replaced 
every 6 months, at the rated capacity or if a 
noticeable reduction in ow rate occurs.
 • Protect from freezing, remove lter cartridge 
when temperatures are expected to drop below 
33° F.
 • Do not install systems in areas where ambient 
temperatures may go above 110° F (43.3° C).
 • Where a backow prevention device is installed 
on a water system, a device for controlling 
pressure due to thermal expansion must be 
installed.
 • Ensure all tubing and ttings are secure and free 
of leaks.