That's fine but, when you're driving around in the heat of the day, shut it off for a few minutes to go shopping or eat lunch, come out and restart it with A/C on, it'll spike way over 430 PSI. I did that and it blew the high pressure switch out of the back of the compressor - sounded like a shotgun going off. Luckily enough I had another compressor with a smoked clutch so, I changed the clutch out of this one (since the snap ring groove was blown out too), and installed the other one's clutch. Have been running it for a few years now, after I wired in the HP switch so it worked like it's supposed to. Not just close the recirc door. The original R4 compressors came with a blowout valve so it'd let a bunch of refrigerant out to prevent blowing a hose or ruining the compressor. You just had to replace that valve and charge it back up
![Frown :( :(](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
I'm sure EPA just loved releasing all the R12 into the atmosphere