Gree GRS-CQ8.0Pd/NaEK Service Manual page 130

(4) After confirming that there is no leakage from the system, when the compressor is not in operation,
charge additional R410A working fluid with specified amount to the unit through the filling opening of the
liquid pipe valve of the outdoor unit.
1) Be sure to charge the specified amount of refrigerant in liquid state to the liquid pipe. Since this
refrigerant is a mixed refrigerant, adding it in gas form may cause the refrigerant composition to
change, preventing normal operation.
2) Before charging, check whether the refrigerant cylinder is equipped with a siphon tube or not.
Test Operation & Troubleshooting & Maintenance
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