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.
Removing the ice from between the chamber wall and the insulation (hopefully will never have to do this again)
1. Inadequate Drying Time: If your food is not completely dry after a cycle, it may require additional time. Always check moisture levels before sealing.
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.
It freezes the product and lowers pressure to remove ice by sublimation. Sublimation is the transition of a substance directly from the solid to the gas phase without passing through the liquid phase.
22F, achieved by dividing nove hours by 110F (the difference in food temps). We both know that the FDer doesn't do linear as the temps fall faster early on and slowly peak to max low temps, but the food freeze time might be a tad more linear than the FDer as food is denser and must be frozen throughout.
I think a community-built troubleshooting manual is a great idea. These machines are simple in some ways, and more complex in others, and having a lot of eyes on the problem is always good.
3) Inside the front panel I installed a plastic shield over the display card and a water deflector just below the hole to route the exterior condensation to an 11x17 pan beneath the FDer.
We have a large vegetable garden, and I love that I can pick something and freeze dry it Know More right away. I know where my food comes from and how it was treated. This gives me peace of mind in knowing I am feeding my family healthy food.
The best way to keep tabs on used options that may be available is by joining freeze-drying Facebook Groups, following them on Instagram and TikTok, or checking online self-reliance and preparedness forums.
You will be addicted once you realize how much you can freeze dry, how easy it is and how much you can preserve for your household in a short amount of time.
Odds are the problem is the vacuum hose or its end connections, the drain valve, or the door gasket. Based upon my experience I'd double check the fittings while installed on the FDer.
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How often should I change the oil? You can filter the oil using Know More the included oil filter to remove impurities, but it’s best to change the oil every 20-25 batches or when it appears cloudy.