34 MAINTENANCE
• 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.
• Use of unauthorized water filters may result in
product malfunction, water leakage or water
quality issues, which will not be covered under
the product warranty.
• 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 plumber if 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
filter system is 100 ℉ (37.8 ℃).
• Protect filter from freezing. Drain filter when
temperatures drop below 40 ℉ (4.4 ℃).
• The disposable filter cartridge MUST be replaced
every 6 months, at the rated capacity or if a
noticeable reduction in flow rate occurs.
• To protect it from freezing, remove filter
cartridge when temperatures are expected to
drop below 33 ℉.
• Do not install systems in areas where ambient
temperatures may go above 110 ℉ (43.3 ℃).
• Where a backflow prevention device is installed
on a water system, a device for controlling
pressure due to thermal expansion must be
installed.
• Ensure all tubing and fittings are secure and free
from leaks.
Replacing the Water Filter
• Replace the water filter:
- Approximately every six months.
- When the Replace Filter h icon or the
indicator light turns on.
- When the water dispenser output decreases.
• To purchase a replacement water filter:
- Visit your local dealer or distributor
- Search using "water filter" on lg.com
- Use replacement cartridge: LT1000P,
LT1000PC, LT1000PCS or ADQ747935**
1 If the top shelf, located below the water filter,
is in the highest position, it will need to be
removed prior to replacing the water filter.
• To remove any shelf, tilt up the front of the
shelf and lift it. Pull the shelf out.
2 Pinch the sides to open the water filter cover.
3 Pull the water filter downward and turn it
counterclockwise before pulling it out.
• Make sure to rotate the filter down
completely before pulling it out of the
manifold hole.
• Replacing the water filter causes a small amount
of water (around 1 oz. or 25 cc) to drain.
• Wrap a cloth around the front end of the water
filter cover to collect any leaking water. Hold the
water filter upright, once it is removed, to
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