PapaSop The warm up function is designed to heat the oil and clear it of impurities, I think it is a way to maximize the life of the pump rather than the oil. I think that is going to be far more valuable for a processing plant or butcher who might possibly push that type of pump to the end of it’s life, rather than a home guy. If I first got the machine or hadn’t run it in a season I would run that cycle but I certainly wouldn’t if it had just been a day or even a few days since I ran it.
Out of all the non 100% commercial chambered (or non chambered for that matter) machines I have used I think the Primavac is my favorite. Now, they are brand new so who knows if that will continue to be accurate but they have nice strong fast pumps, do a good seal and while this is NOT a real selling point because it isn’t official, I was able to lay 2 bags on top of each other and seal the product in them and they sealed perfectly. That’s anecdotal though, not official!
Every page that has a product review should have a link to it underneath the main image in the image carousel. Or we have a product review playlist on our youtube page here https://www.youtube.com/playlist?list=PLtDTXDFpOF0402-aQ1Ag7oVf9qdv7-zym