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
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Freeze drying with the Harvest Right Pharmaceutical Freeze Dryer completely removes all the water from organic material in about 24 hours. There is pelo other preservation method that can come close to eliminating the water from organic material this quickly.
The only way I know to filter the water vapor out would be a cold trap. They usually use liquid nitrogen or dry ice to keep the temperature low enough that all the water condenses out. Obviously you would need a supply of the liquid nitrogen or dry ice that would probably not be cost effective for most of us. The other option to get that cold would be to use a cryocooler and build a cold trap around it. It could be done, but would be pretty expensive. I've been watching some electronics on ebay that have cryocoolers in them, but the cheapest I've seen is around $600. Still not a cheap option, but you wouldn't need dry ice or liquid nitrogen to feed it.
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Tray lids– Though freeze drying is underway, you would possibly end up prepping for the next batch. Tray lids are vital in these conditions, preserving your prepped food from contaminants, odors, or unintended spills with your freezer.
Full One-Year Warranty only includes the U.S. continental 48 states Warranty Period: For one year from original ship date. Included: Premier oil vacuum pump and oil-free vacuum pumps. Harvest Right will be responsible for: Repair or, at our option, replace any part of this freeze dryer and/or vacuum pump which proves to be defective in workmanship or material. Consumer will be responsible for: Costs of service calls. Consumer may also be responsible for replacement parts caused by consumer misuse and neglect of product. See Normal Responsibilities of the Consumer below. Limited 3-year warranty Warranty Period: For the second and third year from the original ship date. Harvest Right will be responsible for: Repair or, at our option, replace any part of the sealed refrigeration system (compressor, condenser, evaporator, tubing) which fails because of defective workmanship or material. Consumer will be responsible for: Diagnostic charges for determining defects, and any costs for transportation and delivery of the appliance required because of service. Limited Warranty (Alaska, Hawaii, Canada and Puerto Rico) Time periods listed above. Included: Premier oil vacuum pump and oil-free vacuum pumps. All provisions of this limited warranty are the same as listed above except that service will be provided by the customer or a qualified local service provider that is approved by Harvest Right. The consumer will be responsible for the cost of transportation of the product to the repair shop or the travel cost of the technician to the consumer’s location. In the event a consumer is required to ship the product directly to Harvest Right for repair, the consumer is eligible for a shipping credit in an amount determined by Harvest Right at the time of shipping. Limited International Warranty (includes all countries not described above) Warranty Period: For one year from original ship date. Included: Premier oil vacuum pump and oil-free vacuum pumps. Harvest Right will provide: Support through telephone and e-mail only. At our option, all parts deemed necessary will be provided by Harvest Right. Consumer will be responsible for: Costs of local service and cost of parts for consumer misuse and neglect of product. Costs for transportation and delivery of all parts, for any reason, from Harvest Right to Consumer. Normal Responsibilities of the Consumer: This warranty applies only to freeze dryers used in clean environments and when operated in accordance with Harvest Right instructions. The consumer is responsible for the following items: 1. Proper use of the appliance in accordance with the instructions provided with the product.
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The shelf life of canned and dehydrated food is approximately two to three years, while freeze dried food easily lasts eight to ten times as long.
In my opinion, the absolute best place to buy a home freeze dryer is Harvest Right. We’ve had a medium-sized Harvest Right unit for more than 5 years, and it’s still going strong. You can check out their current online sales and promotions via this link.
Additionally, freeze dried food is very light, since all the water is removed, and can be easily transported for hiking and camping or when used during long term emergency needs.
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.
I found out the hard way about the anti-drainback seal when I first tried the filter and got... nothing. I did do some research afterward and learned, as you point out, that there are some filters than don't use the seal but by then I was committed. Fortunately, it wasn't all that hard to remove it, but definitely better not to have to.
Forgive me for the extremely long post but I thought other southerners may also face this problem and could use this information.