What temperature is it in place at the time of recharging?
Is the equipment completely empty or does it have some load?
It is important that the equipment is in good cleaning and maintenance conditions at the time of recharging to avoid erroneous readings
It is obvious that this is the first time that you do this, it would not be bad, to review everything you researched about this procedure
Comment
If it's the first time. I am investigating as much as possible before recharging. The equipment has gas that is cold, it only throws enough. I think it looked like this when they made the last load about 3 years ago. They didn't charge me well nose.