Anyone have any experiences with an R4 Compressor Low Pressure Switch mounted in the compressor??? 1979 Cutlass

Do they work??? and has it "saved" any compressors from seizing?? or???? is it worth it??

The factory manual says the contacts open at about 25 PSI lbs or less.

I looked at all these part # equivalents and not one gave a spec on this..

• UAC # SW2122KTC
• Autocomp Technologies # 952122
• Four Seasons # 35756
• General Motors # 2724020
• General Motors # 6551368
• General Motors # 6551454
• General Motors # 6552017
• Ready-Aire/Proliance # 5040
• Santech # E131019
• Santech # MT0674
• Visteon # 320008
• Omega # 2930011
• General Motors # 2724335
• General Motors # 89019183
• AC Delco # 152159
• Annex # 12302801
• NAPA # TEM207066
• NAPA # 207066
• Omega # E131019
• Omega # MT0674
• FJC # 3322
• MEI # 1402
• Trad Automotive # SW112
• Trad Automotive # MT0674
• Global Parts Distributors # 1711792
• AC Delco # 152122
• General Motors # 6595214

Fred

 

The cycling switch will open at about 25 psi. I thought it was always on the filter/dryer/accumulator.

 

not the switch I am talking about(cycling switch ) I am talking about the low pressure switch that is in the compressor..(opens the grounding of clutch) if you lose freon <25lbs PSI