I was called to recover the refrigerant out of this old walk in cooler. My recovery unit broke down so I borrowed my coworkers fluoromizer 3700. Its the fastest recovery unit I've ever used. It has 3/8 ports on the service ports so be sure to have the proper hoses and fittings. Otherwise you'll be running copper tubing with flare nuts like I did...
You can see the walk in cooler collapsing. No heavy weights on this job...