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Chiller Water-cooled Screw
Do not use undesignated refrigerant or oil.
• Do not use undesignated refrigerant, cooling oil or brine.
• It can have severe effect on compressor and part defect.
• If you would like to use a substitute refrigerant,
please contact LG.
Always shut down the power during installa-
tion and repair service.
• Electric shock can lead to injury or death.
• There could be more than one circuit breaker
switches. Indicate and check all switches blocked
so that the power will not be recovered until the
task is completed.
Wear protective gear.
• Wear protective goggles and gloves.
• Always be careful when installing and operating
the chiller and when operating electric parts.
When providing the service, do not take off
the brazing on the existing joint. If necessary,
put the pipe with the pipe cutter during the
service.
• Compressor oil is combustible and there is no
method of detecting the flux in the refrigerant pipe.
• Check the oil within the pipe and use the pan to
measure the amount of oil to be added to the cycle.
When charging/removing the refrigerant, always
let the water flow on the heat exchanger.
• It can prevent potential damage of the tube within
the heat exchanger.
• When the chiller is exposed to temperature below
0°C, use the brine appropriately within the water
circulating pipe to prevent the heat exchanger
from freezing.
Do not exhaust refrigerant inside the building
through the refrigerant exhaust valve.
• Outlet of the exhaust valve must be directed to outdoors.
• Leakage of refrigerant in closed space can
remove the oxygen to cause suffocation.
• Closed space or space with low ceiling must be ven-
tilated appropriately. Suction of refrigerant is haz-
ardous and can cause irregular heart beat, uncon-
sciousness and death. Abuse of refrigerant is critical.
Refrigerant is heavier than air and reduces the
amount of oxygen. It can stimulate the eye and skin.
Be careful of leakage.
• If a leakage is spotted at the joints including
pump and pipe, immediately stop the operation.
• It can cause an electric shock, a leakage or a
problem to the product.
Be careful of electric shock.
• After installing the chiller, always make sure to
ground the product.
• There is a risk of electric shock.
Do not leave the cooling system in standby
condition for more than necessary.
• When the repair cannot be completed, close the
cycle to prevent the oil from being contaminated
and charge the dry nitrogen.
Do not reuse the compressor oil.
• It can damage the product.
