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ENGLISH
How to put the refrigerant into the refrigerant container before pump down operation
When the amount of refrigerant charged in the system exceeds maximum receptive capacity, collect the refrigerant into
the refrigerant container at first and then perform the pump down.
Prepare the exclusive refrigerant container that can be recharged, scale, and manifold gage that can be recharged.
Check the current amount of refrigerant within the system.
After connecting the refrigerant container to an outdoor unit, operate 50% of all indoor units as cooling mode.
Check the pressure of high pressure side for manifold gage after 10 minutes from cooling operation. When the pressure
of high pressure side is above 2.9 MPa (gauge pressure), 420.61 psig decrease the number of operating indoor unit and
make the pressure below 2.9 MPa (gauge pressure), 420.61 psig.
After checking that the pressure of high pressure side went below 2.9 MPa (gauge pressure), 420.61 psig, open the
manifold gage side valve(2) that is connected to the liquid pipe and refrigerant container valve. Then run the refrigerant
from liquid pipe to refrigerant container.
Check whether the proper amount of refrigerant are put into the container using a scale, turn off the valve and remove
the manifold gage.
The amount of refrigerant that can be put into the refrigerant container should be about 50% of all refrigerant of the
whole system.
Do not collect too much refrigerant in one refrigerant container.
Gas side
Scale
Liquid side
Manifold gage
Service valve
Outdoor unit
R410A
Refrigerant
container valve
Valve(2)
Valve(1)
AM0@@FXMDCH_IM_EN_03408A(1).indd 43 2013-03-04 오후 4:28:27
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