LG GU20BGP1 Owner's Manual page 10

Don't open the refrigerator door too often-hot air will enter
and increase the temperature.
Never overload your refrigerator or cover the shelves
with paper or plastic sheets as it will reduce its efficiency.
Close the door properly, make sure that there is no
gap between the gasket and the cabinet of your LG
refrigerator.
Wipe excessive moisture on food or place it inside
containers or plastic bags. This will help in retaining
its freshness for a longer period of time.
Feel free to call your LG Customer Information Centre
(CIC) / Branch / LG Representative in case your
refrigerator has suffered a damage in transit.
It is recommended to use Voltage Stabilizer (0.5kVA)
if power fluctuations are frequent and out of
specified voltage range (135-290V)**, Stabilizer
usage increases the refrigerator life.
** As per LG Test Standards.
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