There are 3 ports on the chamber that I made slits in the plastic to get around and taped them up once around them. Do not tape to the insulation. Tape only to the vapor barrier plastic. It doesn't take long, just be careful. After the plastic is in place and secure around the chamber I sealed the plastic to the back of the front and back panels using the packing tape. All the way around the front and back of the chamber to completely seal the chamber from outside air and humidity.
Mylar bags keep food fresh for years The enemies to freeze dried food are moisture, oxygen, and light. Ideally, the food should be stored in a mylar bag with an oxygen absorber. The bag should be heat sealed to keep air from getting in. For best results, use a mylar bag 7 millimeters thick.
Not only does this save time and money, it saves the headache of trying to throw together a last minute meal if we are in a hurry. And again, it cuts down on food waste.
This new Industrial 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.
I removed the side covers and found the water dripping from the chamber insulation. I called up HarvestRight to ask for ideas on how to avoid this in the future.
Upon turning off the pump (no isolation valve on the pump - standard setup), the chamber pressure rose quite rapidly going to 2000 mTorr and continuing up in a couple of minutes or so.
Door seal appears good against the plexiglass side, even stripe of contact, nice and wide. Inside gasket groove has been checked for debris and cracks. Looks OK, but the design seems odd to me!
The one "gotcha" I encountered in making this is that a typical car oil filter attaches with a 3/4x16tpi threaded pipe. I could find no such pipe anywhere. My solution was to use instead a 3/4x16tpi bolt, and then drill a hole through it.
My teenage son has Celiac Disease, which means his body cannot process gluten. Unlike with many food allergies, if a person with Celiac Disease consumes gluten, it will do permanent damage and can lead to cancer. Once we received my son’s diagnosis, I started researching to learn what he can and cannot eat.
adding insulation on the 3 ports on the chamber (One time thing - the drain and vacuum ports are very easy to get to)
So, while it might be tempting to stuff just as much as you may onto a tray, an arranged tactic making use of these applications will produce the best freeze dried foods, batch immediately after batch.
So the bottom line is this: If you can afford the money, space, and time to spend on freeze-drying your own food and you believe the need for the food is many months or years away, then eventually the Harvest Right freeze dryer will pay for itself.
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•Control of the shelf temperature during the dry cycle. This includes setting as many as five different shelf temperatures, thus allowing the material to dry in phases, at different temperatures.