
After the system is evacuated, close the high and low pressure manual valves on the manifold gauge. Open the refrigerant tank valve, then loosen the nut at one end of the manifold gauge hose to allow gas to escape for a few minutes, then tighten the nut. Turn the high-pressure side manual valve to the fully open position and invert the refrigerant tank. Inject the specified amount of liquid refrigerant from the high-pressure side. Close the refrigerant tank charging valve and the high-pressure manual valve on the manifold gauge, then remove the gauge.


