OK first things, the car is 1983 300d

So here's what I know...

system will hold vacuum, evacuated by local shop

won't take more than 3/4 can freeze-12

when fired up I get the following gauge readings 60PSI low side 180PSI high side.

blows only slightly cool air

Any help would be appreciated

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1972 280SE 4.5

Expansion valve stuck closed?

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81 300CD (sold) 1972 280 SEL 4.5 (sold) 1966 250 S 4 spd (sold) 1974 450 SL (sold) 86 BMW 325ES (sold), 1973 280C (sold) 1988 300 SE.