There is no low pressure cutoff. The switch on the receiver/dryer prevents the compressor engaging if refrigerant pressure is too low, but there's nothing on the low side.

If you still had the pressures you say above after the system had been shut off for a while, you have a clog in the system somewhere. You don't specify if the pressures above are standing or with the system running. If you didn't do a thorough job of pulling a DEEP vacuum to dry the system out or if you used the wrong oil for the refrigerant you filled up with, you can have problems. If the system was not thoroughly flushed prior to installing new components, you may have a piece of debris lodged in the orifice of the expansion valve.

What year is this? Model? This stuff needs to be listed, Ms. Cleo doesn't work here. If you have a 1985 or later vehicle, the Klima relay can cause problems with intermittent operation.

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Current stable:
1995 E320 149K (Nancy)
1983 500SL 120K (SLoL)

Black Sheep:
1985 524TD 167K (TotalDumpster™)

Gone but not forgotten:
1986 300SDL (RIP)
1991 350SD
1991 560SEL
1990 560SEL
1986 500SEL Euro (Rusted to nothing at 47K!)