The oxidizer packets are a one-time use, although the mylar bags could possibly be cut down and reused. Cost of vacuum pump oil starts at $20 a gallon, although that oil can be filtered and reused. An oil-less pump is also an option but will be an upfront cost of

I routed the exhaust from the catch can to a home made catch can that consisted of a jar with two ports with steel wool inside. I wanted to see just how much oil would escape the newly install catch can and collect in the jar.

Reattached hose and ran another full system test (results, 750 mTorr lowest steady reading - looking through the oil level window, some bubbling seen in oil even after an hour of pumpdown - some "air" noises from pump)

These commercial freezers are also a must-have for commercial kitchens that need to freeze very large containers or boxes that cannot fit inside of a conventional freezer. You can purchase several different sizes of walk-in freezers. They’re custom-made to the kind of space you have.

The appliances that you buy will need to be specifically determined by your kitchen space, and the types of food that plan to be be serving.

You can count on me sticking around to talk about the food side of things! My wife looked at me a little oddly when I got the freeze dryer, but now she's a fan too. I'm discovering things that it can do that I hadn't expected, such as making low carb snacks.

Oil Changes: This new Premier Pump rarely needs to have the oil changed or filtered. The pump has a gas ballast feature that makes it so water does not stay in the oil. Because of this, the oil in the pump will be pristine and clear, even after 30 or more batches.

It appears that the ice build up inside the chamber sublimates as well as the ice in the food. Eliminate the ice and the process is faster, and less water ends up in your oil.

14 Posted December 16, 2015 (edited) On 7/31/2015 at 11:12 PM, TonyC said: Somehow this post got posted twice so I'll edit the second one with some more useful information. I remember reading somewhere in this thread where somebody was asking how long you run the freeze cycle with Know More pre-frozen food. I have my chest freezer set to -12F, and I usually let the freeze dryer cool for an hour before I put the frozen food in. After I load the food in I wait another half hour to start the drying process. I've had a lot of cycles that the total time between pulling one batch out and starting the drying cycle on the next is around 2 hours. I'm running mine in a cold garage, so it cools down pretty quickly. If you have yours in a warm room it would probably take a little longer.

Of course the bags were frozen right in to the mass of berries so it was quite a painful struggle to get the mess to the point where I could hack off slices of the berries to put on the trays.

Is it flash freezing and dehydrating at the same time? Do the items need to be kept frozen, or stored at room temp?

Run full system test with pelo food in chamber (results, 630 mTorr lowest steady reading - looking through the oil level window, some bubbling seen in oil even after an hour of pumpdown - some "air" noises from pump)

I am looking for a more defined "heuristic" curve based upon the internal temperature. I am sure that your engineers probably have tables for such things. I also know that different foods freeze at different rates, that is why I am asking for a heuristic answer.

19.7k Location:Ontario, Canada Posted January 25, 2016 So a couple of months ago (when the weather was still warm) Alleguede has his assistant drop off some raspberries that he wanted me to freeze dry for him. Since they were IQF raspberries I assumed that they would be individual - but apparently when you leave them in the trunk of your car long enough to thaw, then put them back in the freezer - then take a couple of days to get them over to me - they are no longer going to resemble individual raspberries.