Operating Instructions and Installation3-9Samsung Electronics3-2-2(f) Air-Purge Procedure1. Connect each assembly pipe to the appropriate valve on theoutdoor unit and tighten the flare nut.3. Open the valve of the low pressure side of manifold gaugecounter-clockwise.6. Mount the valve stem nuts to the 2-way and 3-way valve.6. And mount the service port cap to 3-way valve.4. Purge the air from the system using vacuum pump for about30 minutes.- After that, please recheck that pressure is staloilization.- Close the valve of the low pressure side of manifold gaugeclockwise.- Remove the hose of the low pressure side of manifoldgauge.7. Check for gas leakage.6. - At this time, especially check for gas leakage from the3-way valve’s stem nuts, and from the service port cap.5. Set valve cork of both liquid side and gas side of packedvalve to the open position.2. Connect the charging hose of low pressure side ofmanifold gauge to the packed valve having a service port(3/8” Packed valve) as shown at the figure.ABCDOutdoor unit Indoor unitGas pipe sideLiquid pipe sideVacuum PumpB(liquid)A(gas)Valve stemStem cap