Operating Instructions and Installation3-11Samsung Electronics3-2-2(h) Refrigerant Refill• Refill an air-conditioner with refrigerant when refrigerant has been leaked at installing or using1. Purge air(for new installation only).3. Connect the tank to refill with Refrigerant4. Set the unit to cool operation mode.7. Stop operation of the air conditioner.9. Close the cap of each valve.2. Turn the 3-way valve clockwise to close,connect the pressure gauge(lowpressure side) to the service valve, andopen the 3-way valve again.5. Check the pressure indicated by thepressure gauge(low pressure side).* Standard pressure is should be4.5~5.5kg/cm2 in a reqular, high operationmode.6. Open the refrigerant tank and fill with refrig-erant until the rated pressure is reached.* It is recommended not to pour therefrigerant in too quickly, but graduallywhile operating a pressure valve.8. Close the 3-way valve, disconnect thepressure gauge, and open the 3-wayvalve again.Suspension hookHighpressuregaugeHandwheelFinger tightfittingsConnected tohigh pressuresideCharginglineFor mountingother and ofhose whennot in useCompoundgauge