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Pump Down
The object of pump down
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You can reduce as much refrigerant leakage as possible during product movement or repair by collecting the refrigerant
to the outdoor unit .
Caution for pump down procedure
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The amount of refrigerant that can be put into an outdoor unit is limited due to the slim shape of the outdoor unit .
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Before performing pump down, most of the refrigerant should be put into an empty container at first . The maximum
amount of refrigerant that can be put into the outdoor unit is 5kg(176 .4 oz) .
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When the amount of system refrigerant exceeds the amount of maximum receptive capacity, compressor trip or damage
by fire might be caused .
Pump down procedure
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Before performing pump down, collect the refrigerant into the empty container .
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Turn off the manifold gage .
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Turn off the service valve of liquid pipe side .
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Press K2 button on the outdoor unit PCB three times . (‘
’ is displayed on outdoor PCB LED .)
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When the compressor starts operating, observe low pressure using manifold gage .
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When the low pressure goes below 0 MPa(gauge pressure), turn off the service valve at gas side and finish the pump
down operation . (To finish pump down operation, press K2 button one more time or press K3 button one time to be
initiated .)
• When putting refrigerant into the refrigerant container, you must use the exclusive container that can be
recharged . When remodeling normal refrigerant container illegally, explosion might occur .
CAUTION
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2013-03-04 오후 4:28:27