freon ammount
#7
From my experience, when filling an A/C unit it should be between 25-45 psi I just recharged mine to 40 psi and she's blowing nice and cold. As for the amount to put in I would think that 2 lbs. should be sufficient maybe a bit more. The reason your compressor won't kick on is, most likely, because the system is empty or very low. Cross your fingers that you don't have a leak in the system.