You need to vacuum down the system and make sure that it holds a vacuum, with that proven, you can add the refrigerant to the correct weight through the low pressure side via a recharging station. The system will not operate with no refrigerant pressure this is a safety design to protect the compressor. Many mechanics have these recharging stations and adding refrigerant without knowing the exact weight used can damage the system as well. So I recommend that a mechanic do the final stage of the recharging so it is correct and you will not have any problems.
Thursday, April 19th, 2018 AT 5:41 AM