AC Blows out all freon

[rjs1]

I have a 94 ranger just had the air compressor changed along with the evaporator. the system will cool fine for a short period then blows out all Freon. Not sure where. The mechanic has changed the compressor out two times under warranty but will not continue to do this. He mentioned that the accumulator may be plugged and causing a high side preassure blow out ?? Any thoughts or direction to relavant threads.

 

[TestPoint]

Anyone capable of changing out a compressor should be capable of determining what this problem is. All he has to do is connect his gauges to determine if his seeming assumption is correct.