1999 Chrysler Sebring still wont blow cold air

Air Conditioning problem
1999 Chrysler Sebring 6 cyl Front Wheel Drive Automatic

I just filled 134 refrigerant into the low side of my 1999 sebring lxi, and after about 30 minutes, it's still not blowing cold air, and only took in three quarters of the can. Everything is working mechanically, so should I try another can of 134, maybe it's still too low in freon levels? What do you think is wrong. I checked all the fuses, belt, compressor clutch, now what. Could it be the safety switch that cuts the a/c off when the freon is too low activated. If so, can I reset it myself? What's the longest you should wait when filling 134, because I waited 30 minutes? This is all one question, so pick the best answer that fits all descriptions and leads I gave you. What is wrong?