Call Mission point I have been using vinegar. My machine is not very old though …about nine months. I hope I have not damaged it. I really appreciate all the information you give us!
Thank you so much for making this. I was just about to wash out my freeze dryer for the first time and this is very informative and scientific which is what I like! Not just based on “thinking” but tested facts.
Phil, My wife and I are new owners of the large HR. We appreciate your in depth videos. We recently used our dryer this week. The meatballs that were FD left a fatty film on the plexiglass. Reading the comments below we got the answer we were looking for. Thank you!
Our freeze dryers have been in storage (doors open) since last November while we were renovating. I am grateful I found your video. Just deep cleaned one of FD. I figure I should also pour some alcohol down the drain line. I am ready to experiment with peppermint candies. Since we still do not have a kitchen sink or dishwasher yet, I am going to stick with candies, hoping to avoid the potential messes FD-ing meals can bring. Thank you for all your research and great information! Can't wait to see what you share next.
If you freeze dry sliced strawberries, (it saves a lot of energy if you deep freeze them first), you’ll be unlikely to get a mess. They are a great starter item. We found that putting down some parchment paper in the trays, makes things easier again, especially if you’re still setting up your household I don’t necessarily have all the plumbing connected. Parchment paper will lift right off the trays, and you can use a clean dish washing cloth to just dust away any remaining particles of freeze dried strawberries. We found the same thing with freeze-drying, sliced bananas. Except it’s a lot more efficient to slice the bananas lengthwise. Then we dip them in a solution of lemon juice with honey in it. Some of us say there’s no difference in the taste, but more of us think it’s worth the effort. Especially to keep the bananas, nice and brightly-coloured. There’s a big positive correlation between how appetizing something looks and peoples’ willingness to eat it.
I am pleased to see the scientific proof that using isopropyl alcohol is a good choice. I have had my FD for 2 weeks and cleaned it each time with IA. Thank you for taking the time to scientifically prove what goes on at a microscopic level. I appreciate this video very much.
First time viewer of your channel, and I just subscribed because of this one video. You were recommended by a person on a Facebook freeze-drying group. My freeze-dryer has finally shipped and is supposed to be here next week. I feel very blessed to have seen this video prior to its arrival. I will follow HR's directions and let it sit for 24 hours and also perform the "bread run", but I plan on doing this cleaning following the bread run and see if that ends the odor that people talk about, even after doing several of the "bread runs". Thank you for this scientific, in-depth study, as well as your professional explanation as you were performing the tests.
@@Philat4800feet One question, is it carved in stone to use ONLY 70% alcohol? I was at Sam's club and they had 91%, so i didn't buy it. I thought there was probably a good reason for the 70%, but I don't know what that is.
Thanks for the video, Phil. Although, I almost felt like I was at work. I am not an engineer; I wrangle them working in the space transportation industry. We just ran our second load so this was perfect timing.
This post has been, by far, my favorite post about the cleaning of our freeze-dryers. You teach the man to fish and share the whys so we can make educated choices. I last watched it over a year and a half ago. I'm now back out on the net researching more about the sanitation around our food prep. The ball valve seized on me, so in my last search for answers to resolving this, I found out that USDA only supports stainless steel for food-grade metals, not brass. But the parts on the tubes connecting to both ends of that ball valve are brass, not stainless. So that brass is rusting. I clean my machine EVERY use. So I was shocked to see what I found when I took the ball valve off. All that rust and gunk building up around that ball valve was nasty and has me concerned about how healthy it is when it's opened and all that gunk is pulled back into the chamber? Have you checked that, too? I realize this video is almost a year old, but I wanted to know if you have experienced this. I'm off to check your more recent videos to see if you have covered this. I still wanted to share my concerns here.
A stainless steel ball valve would be ideal. Another issue to consider from the FDA is the term "Incidental". How likely will food come into contact with other substances. This is the key word when dealing with food grade vacuum pump oils and other materials. You are correct about introducing substances back into the chamber from the drain system. Many have contaminated their food when the drain tube becomes submerged in water. Cleaning the drain system is often over-looked Good thoughts.
I was just talking about that very thing. Leaving the tube in water or even allowing it to be submerged doesn't seem right. I see this in so many accounts. Thank you for all of your willingness to be out in the front testing and sharing the depth of those tests and results. To everyone. @@Philat4800feet
@@Philat4800feet Hello. You speak of the vinegar in the freeze dryer. Would it be OK for me to freeze dry pickles if I was to rinse them really well? I do know that pickles have vinegar in them so I was wondering if you could help me out thanks so much.
Phil - I normally steam clean the crap out of mine after a couple loads. Use the Lady Bug Tancs model which produces super heated steam. Just have to plug the holes to prevent moisture from getting into the line for the pump. It melts away any of the grease and grime. But it is time intensive. Thanks for this video. I can make use of the jugs of alcohol I have as a faster alternative.
Excellent!!. I had wondered if there was a lot of germs and how I should clean the FDer. The instructions aren't very clear. I wondered about the detergent since they put perfume in all of them and that stuff is toxic to me.
Alconox, dilute accordingly, used it everyday for lab instruments, steam sterilizers (autoclaves) ultrasound cleaners (and surgical instruments) everything stainless....and yeah, that darn pillow thingy is kinda nasty...I wipe it down with disinfectant wipes!!!!
Hi Phil! I'm always thrilled to see you have posted a new video! FYI...I remembered seeing conflicting instructions on cleaning the chamber when reading through the HR manuals that come with the freeze dryer. In the "Guide to FREEZE DRYING", page 6, 2nd paragraph it says, "You can also wash the inner walls of the freeze dryer with soapy water or bleach." Page 15 of the Owner's Manual says "Do not use Benzene, Thinner, or Clorox for cleaning." Also, about how long did it take to loose vacuum due to corrosion on the ball valve? (weeks, months?) Thanks!
How often do people contaminate the rack by transferring germs from the bottom of the trays that were loaded up on a counter where a purse had been sitting earlier?
This was most helpful and scientifically based. Many thanks for taking the time to provide this information. Our freeze dryer arrives tomorrow so my husband and I have two follow-up questions: 1. What do you use to clean the acrylic door? 2. We understood 70% isopropyl alcohol would make the seal ring brittle over time, but it appears you use it without problems?
I did 2 bread runs with vinegar/water. Hope I didn't ruin anything. How do I get the smell out of machine? Also, my eggs tasted metalic...anyone have any thoughts on this?
Question: Since cleaning with acid poses a danger to various parts of the freeze dryer (like the chromium oxide layer on the stainless steel or the ball valves), is there also a concern when freeze drying acidic foods? Like citrus, tomato, or foods with a lot of vinegar? I ran my first bread batch with the bread soaked in vinegar, but this video is making me wonder if that is something I should avoid. I also really liked doing freeze dried oranges, but would doing citrus reduce the life of the freeze dryer?
Over the long run perhaps without cleaning. The most damage would be the ball valve where acidic water is trapped for days until the valve is opened and drained. If the chamber is kept cleaned there should be a problem.
@@Philat4800feet Ok cool. 😁 Thank you so much for the advice. Btw, your videos are incredible and I tremendously appreciate your thoroughness with explanation and experiments. I think your channel might be the greatest resource for freeze drying that I have found!
Great videos! BTW, HR is no longer including a pad with new machines. I bought mine a few months ago and found an info slip while unboxing saying many users don't install the pad properly and it interferes with the seal, preventing vacuum. Fine by me as I enjoy the visual check while processing anyway
This is a great video. I am not surprised that the towel had more culture than the chamber. Take your freshly laundered towels, place them in the bathtub with hot water and borax 20 mule team. Swish it around a few times every other hour for an afternoon and see that the dirt that remains even after the washing machine is disgusting! The water will be brown.
So, to be clear from your detailed video (thanks!) it almost seems that the isopropyl alcohol is just for the chamber? Can you clean the shelves with it as well? It looked like you also used the alcohol on the gasket?
Phil, I screwed up and left the door shut and now I have mold. Sounds like washing with mild soap and sterilizing with isopropyl alcohol will clean the chamber. But do I need to clean anything else…and if so, how? Hose? Pump? Thx for the info!
Keep the door and drain valve open and give it a good cleaning without abrasives. The same with the pump. Put a block of wood under the rear with valve open until ready to use.
@Phil at 4800 Feet: Thanks for your video. I especially appreciate the comment about the ball valve, as just two days ago the factory recommended to me that I use 10% acetic acid vinegar to flush out the drain and hose. (!!!!) Your tip about the rubbing alcohol is also a really super good one to have. I imagine that these two tips alone will change the way many, many people clean their machines. That is no small service that you offered with those two comments alone. Your microbiology techniques are a little unconventional here; I’ve never seen petri dishes inoculated in quite that matter, but you did a great job of making your point. Spores are in the air everywhere, and not just on surfaces. Sometimes we use that information to our advantage, such as people do when they want to make sourdough, or vinegar or kombucha’s or even wines without adding their own yeasts. Other times, it amounts to contamination, which is exactly your point. And of course yeast and bacteria are not the only things in the air. There’s a possibility that some of the contamination that you were able to culture, came from airborne contamination. There’s probably nobody that couldn’t benefit from knowing this information, and how to use it to the best advantage possible. Anytime we leave possible residues of food on surfaces, including the interior of the chamber, we run the risk providing a nutritious substrate for microbes to colonize our tools that are used to produce and protect our food. The metallurgy report that you provide is really useful; there’s probably a lot of people with no idea about the fragility of that coating that keeps the stainless steel chamber in prime shape. Thank you very much for that. It’s probably not a bad idea to keep an extra ball valve on hand, since this sort of thing that person might not intuitively consider when it seems that compression is suddenly lacking. If water alone can do this, since water must of necessity pass through the draining mechanism after most uses of a sublimation set up, eventually it’s probably going to happen to everyone. Your presentation is well worth a second listen, and as soon as I send this comment, that’s what I’m going to do. The information that I’m actually looking for today, has to do with cleaning. There are certain items that you can put in your freezer dryer, that no part of the information that comes with the machine, indicates can really expand upon the freezing sublimation process. Eggs are one of those. Lol. If the machine noises up, if they almost invariably do, the sensors can get confused. The machine can spend days trying to sublimate the ice formation, as with all nondry food. Nutrient matter can be drawn in the intake port in the Upper 1/3 of the machine, and my concern would be that that material kind of drawn into the pump and cause problems. I’d really like to hear if you’ve got some ideas about cleaning out that port that leads from the inside of the compression chamber out. Thanks again. Your thoughts on this matter would be very appreciated. Edited to fix some auto correct errors. Please note. I did not actually put a frog in the machine. That was pure auto correct. For anyone who saw that and thinks that I put a frog please note that it was only eggs. Update: I’ve actually downloaded The patent application with the schematics, before managing to get a hold of the factory. Actually, making contact with somebody who was not in a Third World country, and I never seen such a machine, was no small task. they need to do better in that department So a person can just pass a pass-through or a brush through that opening to the outside to clean it. In my case the hose did have to come off the machine and the pump, and it had to be cleaned out. It doesn’t hurt at all to use water on the hose, But No solvents, other than water, if memory serves. (It’s been a year since having to do this.) Again, in my case, the egg hadn’t actually gotten pulled into the pump. Thank God. That would’ve been a whole different level of cleanup. I save the vinegar for silicone hoses now, so as not to pit ball valve; And the 99% rubbing alcohol is what I use to clean the machine out now. It also should serve to preserve the coating inside the machine. So eggs go into the machine deep frozen now, as does anything else with a high sugar content. Lol and the moments the warranty is up, your vacuum filter is going on the machine. tyvk!!!!
Good thoughts and comments. To prevent food particulates from getting to the pump I did install a vacuum filter: pneuforce.com/vacuum-inlet-filters/vacuum-inlet-bowl-filters/vacuum-inlet-filters-assemblies If your unit is still under warranty, I would wait. I'm also working with a food lab on cross contamination with raw meats, such as chicken, within the FD chamber and shelves. This should be done sometime in Jan. 2023
@@Philat4800feet If it's not too late, as you investigate cross contamination and sanitizing, would you consider investigating Steramine tablets? It's recommended for dishwashers, restaurant kitchens, scuba diving gear etc. It's supposedly safe for rubber, plastics, stainless steel etc.
I pour isopropyl alcohol down it. If it's really really bad (moldy), I would close the valve and pour bleach water down it until it backs up to the chamber, let it sit, and rinse well.
So glad I found you and this video! I was going to do my first cleaning! Where did you purchase your extra ball valve? And can you tell us what size please? Thank you!
How do I clean the drain line - the part that is connected to the chamber? I tried a small aquarium brush but it seems to get stuck - any help appreciated.
Great vidéo! Thank you!!! I am assuming you put some isopropyl alcohol in the hole to disinfect the draining tube? Also, it would be sooooo nice to know how to disassemble the premier pump and clean it. Thank you so much!
@@Philat4800feet I used to be heavily involved in LEAN and ASTM at a roller coaster manufacturer. I love LEAN. I am thankful for your channel that represents FD and LEAN.
Hello Phil thankyou for all your fanstic help n ideas, I so enjoy your videos your one of the best. Have you ever heard of having a terrible oil smell in side the chamber on a new FD, I'm having this big problem I can smell it 7 ' away. I'm going to clean it with the rubbing alcohol like you said n do your full leek test. It says I do have a leek and have only tried 8 loads with problems each time. Again thankyou so much have a wonderful day. Pixie
There's a check valve (one way valve) in the vacuum pump. Oil should never get into the chamber. Is it only a smell or is there any oil residue near, or inside the hose? Could one of your past foods smell like oil?
@@Philat4800feet Hello i just found the button to reply back. I think its the glue they used on the tray holder n the connector plug go remove the trays stinks so strong n bad to. Its been airing out for 2 weeks now. They say my hose to the pump in faulty n i need a new valves for the drain hose to n this is a new mechine. Rushing out your products ends up costing you more in the long run. Did you know their moving to a new much larger building, their growing to fast. Thanks for your help i so enjoy all your videos cant wate for the next one. Have a great day 🇺🇸
@@Philat4800feet It's a powder you add to water to turn it into a sanitizing agent. I'm pretty sure it is chlorine based. That said, I have also been using IPA and it is far easier to work with IMO.
@@DaveSmith-cp5kj I have been using Steramine as a sanitizer and buy it from a kitchen supply store in tablet form. From their website " Steramine is not a Chlorine sanitizer, it is a QUAT sanitizer, or Quaternary Ammonium." It would appear to be safe for use on plastic, silicone, rubber and stainless steel.
@@katana600dee I'm not sure why they say that because it says right there on their ingredients what the molecule is, and it does have chlorine. As the other groups attached to the nitrogen are carbon, the chlorine is likely to be the ion. I don't know the brands I used so there might be a different biochemical attack on bacteria, but all the sanitizers I've ever used had a chlorine smell.
Thanks for a great report on cleaning the Harvest Right freeze dryer! Isopropyl alcohol it is. Q: I freeze dried white bean chili. I have cleaned the freeze dryer completely after this batch, but there is still a faint smell of the "chili spices.' Can I set a bowl of baking soda inside the freeze dryer with the door closed so that the baking soda will absorb the smell? Will the baking soda migrate out of the bowl and attach to the surface of the freeze dryer if the system is not turned on? Would I have to wipe down the surface again after letting baking soda sit in a bowl inside the freeze dryer? Thanks for any insight.
The soda could become airborne and enter your pump. I would pass on the soda. You're smelling mircoparticulates of your chili, and those particles could be in your drain line, inside the back of the shelves, inside the corrugated plastic insulation, etc. A fan place in front of the door can help defrost and remove smells.
How do you clean the hose in the back that empties water through the drain valve? Somehow mine got a little rusty. I’m pretty good about caring for and cleaning my machine, but it wasn’t working and I didn’t use it for several weeks. I just opened the back to replace parts and saw it!!!!
The rust is from portions of your ball valve. There may be a time when you will have a vacuum leak because your ball valve ball will become rusty. If you're not freeze-drying leave your ball valve open. To clean the tube, pour a 1/2 cup of hot water with a 1/4 teaspoon bleach down the inside drain with your valve closed (do not mix the bleach with any other cleaner). Wait 60 second and release the valve, pour any remaining sanitizer down the drain. Follow this up with two cups warm water to rinse.
In a perfect world, Yes. But removing the gasket and unplugging the wire harness over and over could cause other problems. Perhaps rinsing the drain every 3-4 loads.
My ball valve was corroded the day I received my FD. Harvest right would not replace it because I did it myself over the weekend. And I did not notify them before I did it.
Thanks for the research and explanation! I’ve heard a lot of people using vodka to clean the interior and put down the drain to clean the hose. Where does vodka fall on the ph scale or rate in cleaning and sterilizing? Thanks!
Vodka is so much more expensive than IPA, I wouldn't bother with it. The main reason people want to use vodka is because of the government adding poison to non-taxed alcohol products. However I do not believe the government adds that to IPA because IPA is naturally toxic since our body cannot metabolize it. IPA can form in our bodies during diabetic ketoacidosis, so it isn't inherently deadly, and also the IPA is easily removed because of its high vapor pressure by just airing out the freeze drier after using IPA.
@@Philat4800feet is there a recommendation of metal for the ball valve that is least susceptible to acidic Ph? Stainless Steel? Carbon Steel? Brass? Thank you for your time in this matter.
I was unclear.... Do you dilute the alcohol or do you use the alcohol as is? Also, do you clean the machine after every load? I have been cleaning mine after every load with free and clear dish soap.
For me, I don't dilute the alcohol. If you're sensitive to the smell or near equipment that produces a spark, I would dilute to 70% alcohol :30% water. As far as cleaning, if I'm doing cooked foods, I'll clean after five loads. If raw eggs and meats, after the load.
Hey Phil! Thanks for this video, super informative! I'll be stocking up on isopropyl for sure. Good to have around for a lot of things anyways. QQ: How would you recommend cleaning the drain hose?
JeffD: I had this very problem just a couple of days ago. The factory advised me to pour vinegar containing 10% acidic acid down there. Now we know that’s not so good for the finish on the stainless steel, so what I did is I put a funnel in the drain, and filled the funnel. You did a great job of clearing debris out of the drain. Factory also said that hydrogen peroxide was OK to use. Henceforth though I think I’ll be using rubbing alcohol. I do like the funnel for the reason that it fits in the drain and keeps vinegar from contacting the finish in the sublimation chamber.
Would you use a steam cleaner, being careful around wires of course? They get up to 318 degrees and would also take just the one step. Thank you very much for all your videos, they are fantastic.
The Petri dish demo convinced me. Thank you for doing that. Do you use the 70% mix on the heating elements as well as the inside of the door ? If we sterilize every few loads would you just wipe down the chamber with water/paper towels in between sterilizations?
Thank you for a very informative & in depth video. I will definitely use Isopropyl alcohol 70% to clean my brand new FD. Just wondering though, there are a large number of people who use vodka to clean their FDs. You did not mention that as a cleaning agent. Is that acceptable? Many people say that they just use the cheapest vodka they can find. Does the alcohol content of the vodka make a difference? Thanks again for all your hard work in researching this topic.
I guess those who use vodka have a funner time cleaning. The FDA calls for isopropyl alcohol, and other listed liquids, around food and food equipment. Vodka is not registered. www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/cfrsearch.cfm?fr=178.1010
Good info on the uninteded consequences: ball valve. Thanks for sharing. Is 70% rubbing alcohol the highest percent we should clean with? Or can we go higher? thank you!
@@violet2433 Probably not. Evaporation would remove most of the product prior to using. The direction of travel (flow), within the chamber is from the frozen food to the chamber wall via sublimation. If this is a concern you could use a slightly damp microfiber cloth to clean the door.
I must ask Phil, how did you solve the corroded ball valve issue? Did you replace the ball valve yourself? Where did you acquire the right one. Or did you have to get Harvest Right to send you a new part?
You mentioned in the video possibly cutting the alcohol 50/50 but I noticed you used straight alcohol when you cleaned the chamber. do I use it straight or cut it, or doesn’t it matter?
IPA in higher concentrations is flammable like gasoline or acetone. So as long as you aren't doing something like smoking while cleaning, you are good with high concentrations. That said, it burns off very quickly so it is unlikely to cause any harm even if it does catch fire.
I was using it full strength. if you are worried about igniting the alcohol, diluted no more than 50% with water. As far as drying time, by the time I have everything reassembled the smell is gone.
I had to look PBW and Starsan up. The PH level for PBW is 12. For Starsan (Star San) is 3.5. 12 is really high on the PH scale (alkaline side), while 3.5 is about the same but on the acidic side. The better cleaners should be around 6-8.
So the brewing industry has been cleaning their stainless vessels with the wrong stuff. They clean after every batch with PBW and for good measure they spray everything with starsan just before starting a new batch. I have not heard of any problems with it breaking down stainless after decades of use. They pump it through their hoses, pipes and valves that are not easy to disassemble and clean.
I can't speak for the brewing industry, but... There are two issues: 1. ASTM wrote the standard A380 for cleaning stainless steel and retaining the protective chromium oxide finish and only a PH neutral cleaner should be used. 2. According to the FDA, and most health departments, only approved cleaners should be used around food. Cleaners not approved must be rinsed, and then sanitized with an approved sanitizer. For home and personal use you can clean your FD with anything. If you start selling food to the public that changes everything. I doubt any of us will ever clean the chamber of the FD enough to ever see it fail. Perhaps I'm being too anal retentive. I just believe in doing something right the first time.
Phil thinking about using a spray bottle with 50% to spay the shelves. They are very difficult to clean because of small clearance. Though the spray would work for getting into those difficult areas. Thoughts?
If you don’t have small fingers to get into around those spaces, you can use a bottle brush, along the variety of the ones people use for cleaning homebrew set ups.
Checked for Nitric acid based cleaners. While it cleans and improves Stainless COMPOUND CR-120N for example needs a LOT of PPE to use and has PH < 1. ISO wins.
There is a liability factor to consider. A 70:30 mix* (recommended by the CDC) will keep the vapors from igniting with spark and flame. 50:50 will still work. *(70% alcohal:30% Water)
Looks like the PH on Envirocleanse-A is 6-7. Pretty much neutral. the SDS shows the following: Biocide/Disinfectant (EPA Reg. #85134-1) for use on hard surfaces as well as biocide in oil fracking & sour wells, disinfectant of food, and disinfectant of potable water. The SDS shows it's fairly safe.
Phil thanks for your thorough process of showing the evidence. You must have worked sometime in a chemistry lab or bio lab? I wonder about alcohol. Can it be used on the shelf fixture? Especially worried about using alcohol on the heater element part of the shelf.. The resin and/or plastics used in the heating component may be damaged by alcohol. Alcohol is a close to neutral PH. But alcohol is also a powerful solvent capable of dissolving and or dry cracking synthetic resins over time. What are your thought on the shelf rack cleaning process?
@@Philat4800feet Hi Phil, I am wondering if you ever contacted the company that make the heating pads and found out if it is safe to use alcohol to clean them. Really appreciate all the work you do and share with everyone. I recommend your videos every chance I get. Thanks!
Keep the alcohol at 70%, but be aware that alcohol at this level can still be flammable. Keep the solution away from open flame or spark. I would keep it in a liquid form, not a spray.
1. You'll need to remove the door gasket, by pulling on it. 2. Slide out the shelf assemble carefully. 3. While holding the shelf assemble with one hand, release the wire harness plug by pressing the release button.
No, just the stainless steel. The makers of the pads have a proprietary adhesive. They won't even tell Harvest Right. I use warm water and mild dish detergent and rinse (wipe) serval times. I'd be careful on anything that could dissolve the glue.
Hard to say. How often do you use your freeze drier? My FD runs 24/7 and I replaced after a year. I would occasionally dip the drain tube in water and see if it sucks up or wait for a vacuum error message.
You're correct. Dawn is rated between 8.7-9.3 on the PH scale (alkaline) and is not approved for food surfaces. Dawn, like most dish detergents, requires rinsing and sanitizing.
What an amazing common sense yet scientific approach to sanitizing a freeze dryer. Appreciate the work you put into this ✌️💕
Wow! It doesn't get much more comprehensive than that! Thank you for all the work.
Call Mission point I have been using vinegar. My machine is not very old though …about nine months. I hope I have not damaged it. I really appreciate all the information you give us!
That was very helpful. Thanks for your time and expertise in putting this together.
Thank you so much for making this. I was just about to wash out my freeze dryer for the first time and this is very informative and scientific which is what I like! Not just based on “thinking” but tested facts.
After my attempt to freeze dry Fish Sauce, I will be cleaning out my chamber as well.
Phil, My wife and I are new owners of the large HR. We appreciate your in depth videos. We recently used our dryer this week. The meatballs that were FD left a fatty film on the plexiglass. Reading the comments below we got the answer we were looking for.
Thank you!
Yup, fats don't FD well.
If you aim for less than 10% fat, you’ll probably have an easier time with it, and a whole lot less mess.
Thank God you did this video. I had been cleaning her with alcohol since the beginning.
Our freeze dryers have been in storage (doors open) since last November while we were renovating. I am grateful I found your video. Just deep cleaned one of FD. I figure I should also pour some alcohol down the drain line. I am ready to experiment with peppermint candies. Since we still do not have a kitchen sink or dishwasher yet, I am going to stick with candies, hoping to avoid the potential messes FD-ing meals can bring. Thank you for all your research and great information! Can't wait to see what you share next.
If you freeze dry sliced strawberries, (it saves a lot of energy if you deep freeze them first), you’ll be unlikely to get a mess. They are a great starter item.
We found that putting down some parchment paper in the trays, makes things easier again, especially if you’re still setting up your household I don’t necessarily have all the plumbing connected.
Parchment paper will lift right off the trays, and you can use a clean dish washing cloth to just dust away any remaining particles of freeze dried strawberries.
We found the same thing with freeze-drying, sliced bananas. Except it’s a lot more efficient to slice the bananas lengthwise. Then we dip them in a solution of lemon juice with honey in it. Some of us say there’s no difference in the taste, but more of us think it’s worth the effort. Especially to keep the bananas, nice and brightly-coloured. There’s a big positive correlation between how appetizing something looks and peoples’ willingness to eat it.
I am pleased to see the scientific proof that using isopropyl alcohol is a good choice. I have had my FD for 2 weeks and cleaned it each time with IA. Thank you for taking the time to scientifically prove what goes on at a microscopic level. I appreciate this video very much.
Thanks
I’m impressed with your video. I would have never thought to use rubbing alcohol. Thanks for sharing.
Excellent video
Thank you for an in-depth video. Now, I am ready to clean my freeze dryer!
You are so welcome!
Thank for for being so thorough. I was wondering about Steramine, but will use alcohol instead.
First time viewer of your channel, and I just subscribed because of this one video. You were recommended by a person on a Facebook freeze-drying group. My freeze-dryer has finally shipped and is supposed to be here next week. I feel very blessed to have seen this video prior to its arrival. I will follow HR's directions and let it sit for 24 hours and also perform the "bread run", but I plan on doing this cleaning following the bread run and see if that ends the odor that people talk about, even after doing several of the "bread runs". Thank you for this scientific, in-depth study, as well as your professional explanation as you were performing the tests.
Careful, Freeze drying can be addictive. Go forth and freeze dry the world.
@@Philat4800feet One question, is it carved in stone to use ONLY 70% alcohol? I was at Sam's club and they had 91%, so i didn't buy it. I thought there was probably a good reason for the 70%, but I don't know what that is.
@@sreihart Stickley for safety. A low percentage is less flammable.
Thanks for the video, Phil. Although, I almost felt like I was at work. I am not an engineer; I wrangle them working in the space transportation industry. We just ran our second load so this was perfect timing.
So glad I watched this. It prevented me from doing regrettable cleaning.
Glad I could help
This post has been, by far, my favorite post about the cleaning of our freeze-dryers. You teach the man to fish and share the whys so we can make educated choices. I last watched it over a year and a half ago. I'm now back out on the net researching more about the sanitation around our food prep.
The ball valve seized on me, so in my last search for answers to resolving this, I found out that USDA only supports stainless steel for food-grade metals, not brass.
But the parts on the tubes connecting to both ends of that ball valve are brass, not stainless. So that brass is rusting.
I clean my machine EVERY use. So I was shocked to see what I found when I took the ball valve off. All that rust and gunk building up around that ball valve was nasty and has me concerned about how healthy it is when it's opened and all that gunk is pulled back into the chamber?
Have you checked that, too? I realize this video is almost a year old, but I wanted to know if you have experienced this. I'm off to check your more recent videos to see if you have covered this. I still wanted to share my concerns here.
A stainless steel ball valve would be ideal.
Another issue to consider from the FDA is the term "Incidental". How likely will food come into contact with other substances. This is the key word when dealing with food grade vacuum pump oils and other materials. You are correct about introducing substances back into the chamber from the drain system. Many have contaminated their food when the drain tube becomes submerged in water. Cleaning the drain system is often over-looked Good thoughts.
I was just talking about that very thing. Leaving the tube in water or even allowing it to be submerged doesn't seem right. I see this in so many accounts. Thank you for all of your willingness to be out in the front testing and sharing the depth of those tests and results. To everyone. @@Philat4800feet
@@Philat4800feet Hello. You speak of the vinegar in the freeze dryer. Would it be OK for me to freeze dry pickles if I was to rinse them really well? I do know that pickles have vinegar in them so I was wondering if you could help me out thanks so much.
Freeze dry away. freeze drying with foods containing vinegar and cleaning with vinegar are two different issues.
Phil - I normally steam clean the crap out of mine after a couple loads. Use the Lady Bug Tancs model which produces super heated steam. Just have to plug the holes to prevent moisture from getting into the line for the pump. It melts away any of the grease and grime. But it is time intensive. Thanks for this video. I can make use of the jugs of alcohol I have as a faster alternative.
Excellent!!. I had wondered if there was a lot of germs and how I should clean the FDer. The instructions aren't very clear. I wondered about the detergent since they put perfume in all of them and that stuff is toxic to me.
What a great video! Really appreciate all of the effort you put into this.
Thank you
Thank you so much, for all your time and your efforts in helping with your research and information, greatly appreciated 😊
My pleasure!
Thank you for the video. I will be using the 70% alcohol from now on 😊
Thank you for your research. It’s very helpful.
Great video! Thank you for taking the time to show and explain. I appreciate you showing some of your sources too! 👏🏻
Glad it was helpful!
THANK YOU so much! I had no idea what to do. Also, they are not sending the pillow anymore.
Alconox, dilute accordingly, used it everyday for lab instruments, steam sterilizers (autoclaves) ultrasound cleaners (and surgical instruments) everything stainless....and yeah, that darn pillow thingy is kinda nasty...I wipe it down with disinfectant wipes!!!!
Good to know- thanks
Wow, this is so helpful. Thank you! Wiping mine down as soon as I get the 70% alcohol.
What are we diluting it to?
Thanks so much for all the information! I love to know how things work. It helps me understand the process.
One of my problems is questioning everything
I wish someone would have explained the "DeMister" before I had to clean mine! Ack!
Very well done, thanks for all the work you put into this video.
Hi Phil! I'm always thrilled to see you have posted a new video! FYI...I remembered seeing conflicting instructions on cleaning the chamber when reading through the HR manuals that come with the freeze dryer. In the "Guide to FREEZE DRYING", page 6, 2nd paragraph it says, "You can also wash the inner walls of the freeze dryer with soapy water or bleach." Page 15 of the Owner's Manual says "Do not use Benzene, Thinner, or Clorox for cleaning." Also, about how long did it take to loose vacuum due to corrosion on the ball valve? (weeks, months?) Thanks!
I made a video on the ball valve- "Why is my Harvest Right Freeze Drier Leaking Vacuum?". Thanks for the comments
Thanks
How often do people contaminate the rack by transferring germs from the bottom of the trays that were loaded up on a counter where a purse had been sitting earlier?
This was most helpful and scientifically based. Many thanks for taking the time to provide this information. Our freeze dryer arrives tomorrow so my husband and I have two follow-up questions: 1. What do you use to clean the acrylic door? 2. We understood 70% isopropyl alcohol would make the seal ring brittle over time, but it appears you use it without problems?
The alcohol was meant for the stainless steel only but could be used on the door. I remove the seal and run it under water.
@@Philat4800feet Thanks! That's what we've been doing since out machine arrived. Appreciate all of your replies and mentoring!
Omgosh Thank you! HR told me to clean out my machine with vinegar! Ive only had it for a few months. Hopefully I didn’t do too much damage. ☹️
I'm sure they're doing the best they can. I hope over time they will learn and improve.
I've done that vinegar cleaning like they said to but not no more thankyou Phill
I did 2 bread runs with vinegar/water. Hope I didn't ruin anything. How do I get the smell out of machine? Also, my eggs tasted metalic...anyone have any thoughts on this?
Question: Since cleaning with acid poses a danger to various parts of the freeze dryer (like the chromium oxide layer on the stainless steel or the ball valves), is there also a concern when freeze drying acidic foods? Like citrus, tomato, or foods with a lot of vinegar? I ran my first bread batch with the bread soaked in vinegar, but this video is making me wonder if that is something I should avoid. I also really liked doing freeze dried oranges, but would doing citrus reduce the life of the freeze dryer?
Over the long run perhaps without cleaning. The most damage would be the ball valve where acidic water is trapped for days until the valve is opened and drained. If the chamber is kept cleaned there should be a problem.
@@Philat4800feet Ok cool. 😁 Thank you so much for the advice. Btw, your videos are incredible and I tremendously appreciate your thoroughness with explanation and experiments. I think your channel might be the greatest resource for freeze drying that I have found!
This was great!
Thanks so much
Great videos! BTW, HR is no longer including a pad with new machines. I bought mine a few months ago and found an info slip while unboxing saying many users don't install the pad properly and it interferes with the seal, preventing vacuum. Fine by me as I enjoy the visual check while processing anyway
Same here, I just cut out a disc of close cell foam, sprayed it with plastic dip and use it and it's easier to clean.
Same here, I just cut out a disc of close cell foam, sprayed it with plastic dip and use it and it's easier to clean.
This so informative. Thank you. How do we clean the drain?
I would pour water directly down the drain hole in the rear of the chamber.
This is fantastic thank you
This is a great video. I am not surprised that the towel had more culture than the chamber. Take your freshly laundered towels, place them in the bathtub with hot water and borax 20 mule team. Swish it around a few times every other hour for an afternoon and see that the dirt that remains even after the washing machine is disgusting! The water will be brown.
That goes along the lines that every American ingests two quarts of bugs and insects each year...ignorance is bliss.
So, to be clear from your detailed video (thanks!) it almost seems that the isopropyl alcohol is just for the chamber? Can you clean the shelves with it as well? It looked like you also used the alcohol on the gasket?
I use it on everything
Phil, I screwed up and left the door shut and now I have mold. Sounds like washing with mild soap and sterilizing with isopropyl alcohol will clean the chamber. But do I need to clean anything else…and if so, how? Hose? Pump? Thx for the info!
Keep the door and drain valve open and give it a good cleaning without abrasives. The same with the pump. Put a block of wood under the rear with valve open until ready to use.
@Phil at 4800 Feet: Thanks for your video. I especially appreciate the comment about the ball valve, as just two days ago the factory recommended to me that I use 10% acetic acid vinegar to flush out the drain and hose. (!!!!)
Your tip about the rubbing alcohol is also a really super good one to have. I imagine that these two tips alone will change the way many, many people clean their machines. That is no small service that you offered with those two comments alone.
Your microbiology techniques are a little unconventional here; I’ve never seen petri dishes inoculated in quite that matter, but you did a great job of making your point. Spores are in the air everywhere, and not just on surfaces. Sometimes we use that information to our advantage, such as people do when they want to make sourdough, or vinegar or kombucha’s or even wines without adding their own yeasts. Other times, it amounts to contamination, which is exactly your point.
And of course yeast and bacteria are not the only things in the air. There’s a possibility that some of the contamination that you were able to culture, came from airborne contamination. There’s probably nobody that couldn’t benefit from knowing this information, and how to use it to the best advantage possible.
Anytime we leave possible residues of food on surfaces, including the interior of the chamber, we run the risk providing a nutritious substrate for microbes to colonize our tools that are used to produce and protect our food.
The metallurgy report that you provide is really useful; there’s probably a lot of people with no idea about the fragility of that coating that keeps the stainless steel chamber in prime shape. Thank you very much for that.
It’s probably not a bad idea to keep an extra ball valve on hand, since this sort of thing that person might not intuitively consider when it seems that compression is suddenly lacking. If water alone can do this, since water must of necessity pass through the draining mechanism after most uses of a sublimation set up, eventually it’s probably going to happen to everyone.
Your presentation is well worth a second listen, and as soon as I send this comment, that’s what I’m going to do.
The information that I’m actually looking for today, has to do with cleaning. There are certain items that you can put in your freezer dryer, that no part of the information that comes with the machine, indicates can really expand upon the freezing sublimation process. Eggs are one of those. Lol. If the machine noises up, if they almost invariably do, the sensors can get confused. The machine can spend days trying to sublimate the ice formation, as with all nondry food. Nutrient matter can be drawn in the intake port in the Upper 1/3 of the machine, and my concern would be that that material kind of drawn into the pump and cause problems. I’d really like to hear if you’ve got some ideas about cleaning out that port that leads from the inside of the compression chamber out.
Thanks again. Your thoughts on this matter would be very appreciated.
Edited to fix some auto correct errors. Please note. I did not actually put a frog in the machine. That was pure auto correct. For anyone who saw that and thinks that I put a frog please note that it was only eggs.
Update: I’ve actually downloaded The patent application with the schematics, before managing to get a hold of the factory. Actually, making contact with somebody who was not in a Third World country, and I never seen such a machine, was no small task. they need to do better in that department
So a person can just pass a pass-through or a brush through that opening to the outside to clean it.
In my case the hose did have to come off the machine and the pump, and it had to be cleaned out. It doesn’t hurt at all to use water on the hose, But No solvents, other than water, if memory serves. (It’s been a year since having to do this.)
Again, in my case, the egg hadn’t actually gotten pulled into the pump. Thank God. That would’ve been a whole different level of cleanup.
I save the vinegar for silicone hoses now, so as not to pit ball valve; And the 99% rubbing alcohol is what I use to clean the machine out now. It also should serve to preserve the coating inside the machine.
So eggs go into the machine deep frozen now, as does anything else with a high sugar content. Lol and the moments the warranty is up, your vacuum filter is going on the machine.
tyvk!!!!
Good thoughts and comments. To prevent food particulates from getting to the pump I did install a vacuum filter:
pneuforce.com/vacuum-inlet-filters/vacuum-inlet-bowl-filters/vacuum-inlet-filters-assemblies
If your unit is still under warranty, I would wait.
I'm also working with a food lab on cross contamination with raw meats, such as chicken, within the FD chamber and shelves. This should be done sometime in Jan. 2023
@@Philat4800feet If it's not too late, as you investigate cross contamination and sanitizing, would you consider investigating Steramine tablets? It's recommended for dishwashers, restaurant kitchens, scuba diving gear etc. It's supposedly safe for rubber, plastics, stainless steel etc.
Use gloves!! That alcohol is the perfect paper cut finder!!! LOL
@@Philat4800feet : That filter is genius. I haven’t seen this in a year, and definitely going back to review it.
I need to find one not made from plastic
Thank you
Very very helpful! thanks a ton for this information.
Glad it was helpful!
Hi Phil, how do you clean the reinforced plastic drain tube that goes to the drain valve? Any help is appreciated. Thank you!
I pour isopropyl alcohol down it. If it's really really bad (moldy), I would close the valve and pour bleach water down it until it backs up to the chamber, let it sit, and rinse well.
@@Philat4800feet Thank you!
So glad I found you and this video! I was going to do my first cleaning! Where did you purchase your extra ball valve? And can you tell us what size please? Thank you!
Hose Depot 3/8 FPT
How do I clean the drain line - the part that is connected to the chamber? I tried a small aquarium brush but it seems to get stuck - any help appreciated.
Great vidéo! Thank you!!! I am assuming you put some isopropyl alcohol in the hole to disinfect the draining tube? Also, it would be sooooo nice to know how to disassemble the premier pump and clean it. Thank you so much!
I can look into it for you.
Wow, when Astm is quoted, then you know this guy is legit.
My work lives and dies on ASTM. I'm over LEAN Manufacturing.
@@Philat4800feet I used to be heavily involved in LEAN and ASTM at a roller coaster manufacturer. I love LEAN. I am thankful for your channel that represents FD and LEAN.
Wow very informative. Thank you.
Glad it was helpful!
very good info. thanks for video. thumbs up
Hello Phil thankyou for all your fanstic help n ideas, I so enjoy your videos your one of the best. Have you ever heard of having a terrible oil smell in side the chamber on a new FD, I'm having this big problem I can smell it 7 ' away. I'm going to clean it with the rubbing alcohol like you said n do your full leek test. It says I do have a leek and have only tried 8 loads with problems each time. Again thankyou so much have a wonderful day. Pixie
There's a check valve (one way valve) in the vacuum pump. Oil should never get into the chamber. Is it only a smell or is there any oil residue near, or inside the hose? Could one of your past foods smell like oil?
@@Philat4800feet Hello i just found the button to reply back. I think its the glue they used on the tray holder n the connector plug go remove the trays stinks so strong n bad to. Its been airing out for 2 weeks now. They say my hose to the pump in faulty n i need a new valves for the drain hose to n this is a new mechine. Rushing out your products ends up costing you more in the long run. Did you know their moving to a new much larger building, their growing to fast. Thanks for your help i so enjoy all your videos cant wate for the next one. Have a great day 🇺🇸
@@lindac6378 Valves can be found at Home Depot.
Wow! Great video! You are amazing!
Blushing.
Hi Phil, Have you considered Steramine sanitizer? It is used in the food industry to clean stainless steel. Thanks!
I have not heard of this. Is it a chemical or machine?
@@Philat4800feet It's a powder you add to water to turn it into a sanitizing agent. I'm pretty sure it is chlorine based. That said, I have also been using IPA and it is far easier to work with IMO.
@@DaveSmith-cp5kj I have been using Steramine as a sanitizer and buy it from a kitchen supply store in tablet form. From their website "
Steramine is not a Chlorine sanitizer, it is a QUAT sanitizer, or Quaternary Ammonium." It would appear to be safe for use on plastic, silicone, rubber and stainless steel.
@@katana600dee I'm not sure why they say that because it says right there on their ingredients what the molecule is, and it does have chlorine. As the other groups attached to the nitrogen are carbon, the chlorine is likely to be the ion.
I don't know the brands I used so there might be a different biochemical attack on bacteria, but all the sanitizers I've ever used had a chlorine smell.
Thanks for a great report on cleaning the Harvest Right freeze dryer! Isopropyl alcohol it is. Q: I freeze dried white bean chili. I have cleaned the freeze dryer completely after this batch, but there is still a faint smell of the "chili spices.' Can I set a bowl of baking soda inside the freeze dryer with the door closed so that the baking soda will absorb the smell? Will the baking soda migrate out of the bowl and attach to the surface of the freeze dryer if the system is not turned on? Would I have to wipe down the surface again after letting baking soda sit in a bowl inside the freeze dryer? Thanks for any insight.
The soda could become airborne and enter your pump. I would pass on the soda. You're smelling mircoparticulates of your chili, and those particles could be in your drain line, inside the back of the shelves, inside the corrugated plastic insulation, etc. A fan place in front of the door can help defrost and remove smells.
EXCELLENT! Thanks Phil!
Thanks
How do you clean the hose in the back that empties water through the drain valve? Somehow mine got a little rusty. I’m pretty good about caring for and cleaning my machine, but it wasn’t working and I didn’t use it for several weeks. I just opened the back to replace parts and saw it!!!!
The rust is from portions of your ball valve. There may be a time when you will have a vacuum leak because your ball valve ball will become rusty. If you're not freeze-drying leave your ball valve open. To clean the tube, pour a 1/2 cup of hot water with a 1/4 teaspoon bleach down the inside drain with your valve closed (do not mix the bleach with any other cleaner). Wait 60 second and release the valve, pour any remaining sanitizer down the drain. Follow this up with two cups warm water to rinse.
So should we be flushing the drain with clean water after every use to avoid or lengthen the time for replacing the valve?
In a perfect world, Yes. But removing the gasket and unplugging the wire harness over and over could cause other problems. Perhaps rinsing the drain every 3-4 loads.
My ball valve was corroded the day I received my FD. Harvest right would not replace it because I did it myself over the weekend. And I did not notify them before I did it.
Sorry. Poor customer service.
Thanks for the research and explanation! I’ve heard a lot of people using vodka to clean the interior and put down the drain to clean the hose. Where does vodka fall on the ph scale or rate in cleaning and sterilizing? Thanks!
I don't have a sample to test, but my guess it would be near neutral
Vodka is so much more expensive than IPA, I wouldn't bother with it. The main reason people want to use vodka is because of the government adding poison to non-taxed alcohol products. However I do not believe the government adds that to IPA because IPA is naturally toxic since our body cannot metabolize it. IPA can form in our bodies during diabetic ketoacidosis, so it isn't inherently deadly, and also the IPA is easily removed because of its high vapor pressure by just airing out the freeze drier after using IPA.
Great video. Very informative Where can one get a replacement valve? Thanks.
Home depot- 3/8 FPT ball valve
@@Philat4800feet is there a recommendation of metal for the ball valve that is least susceptible to acidic Ph? Stainless Steel? Carbon Steel? Brass? Thank you for your time in this matter.
I would use 316 stainless steel, 3/8 FPT ball valve. the cost is about x4 more
I was unclear.... Do you dilute the alcohol or do you use the alcohol as is? Also, do you clean the machine after every load? I have been cleaning mine after every load with free and clear dish soap.
For me, I don't dilute the alcohol. If you're sensitive to the smell or near equipment that produces a spark, I would dilute to 70% alcohol :30% water. As far as cleaning, if I'm doing cooked foods, I'll clean after five loads. If raw eggs and meats, after the load.
Hey Phil! Thanks for this video, super informative! I'll be stocking up on isopropyl for sure. Good to have around for a lot of things anyways.
QQ: How would you recommend cleaning the drain hose?
I guess you could pour isopropyl down the hose.
JeffD: I had this very problem just a couple of days ago. The factory advised me to pour vinegar containing 10% acidic acid down there. Now we know that’s not so good for the finish on the stainless steel, so what I did is I put a funnel in the drain, and filled the funnel. You did a great job of clearing debris out of the drain.
Factory also said that hydrogen peroxide was OK to use. Henceforth though I think I’ll be using rubbing alcohol.
I do like the funnel for the reason that it fits in the drain and keeps vinegar from contacting the finish in the sublimation chamber.
@@Philat4800feet if I clean the drum out with isopropyl alcohol straight, it should cut any build up. Seems like a film on it at times. Thanks!!😊
Would you use a steam cleaner, being careful around wires of course? They get up to 318 degrees and would also take just the one step. Thank you very much for all your videos, they are fantastic.
The issue is using a PH neutral cleaner. Whatever it may be. Steam could work. Be careful with the wires.
@@Philat4800feet Thank you, if my machine ever gets here - hopefully 2 wks - I'm trying it.
The Petri dish demo convinced me. Thank you for doing that. Do you use the 70% mix on the heating elements as well as the inside of the door ? If we sterilize every few loads would you just wipe down the chamber with water/paper towels in between sterilizations?
I'd wipe down what can be reached. The inside of the trays are hard to get to.
Thank you for a very informative & in depth video. I will definitely use Isopropyl alcohol 70% to clean my brand new FD. Just wondering though, there are a large number of people who use vodka to clean their FDs. You did not mention that as a cleaning agent. Is that acceptable? Many people say that they just use the cheapest vodka they can find. Does the alcohol content of the vodka make a difference? Thanks again for all your hard work in researching this topic.
I guess those who use vodka have a funner time cleaning. The FDA calls for isopropyl alcohol, and other listed liquids, around food and food equipment. Vodka is not registered.
www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/cfrsearch.cfm?fr=178.1010
Good info on the uninteded consequences: ball valve. Thanks for sharing. Is 70% rubbing alcohol the highest percent we should clean with? Or can we go higher? thank you!
The higher you go, the more flammable it will be. You can get away with 50/50 mix.
Thank you so much.
Also after u clean it how long do u have to wait before u can use your dryer again?
What about cleaning it with inexpensive Vodka and a throw away wipe?
Thanks
I don't know how to answer that...It would probably work and make cleaning more enjoyable?
thank you for your video, new to freeze drying, may I ask what is it that yours looks like it is plumbed into the wall?
It's a vacuum filter. I should be releasing a video on it in a few days.
What about steramine for restaurants would that be ok?
Steramine has a Ph of 20. Very high in alkaline. I wouldn't use.
Hi Phil, thank you for all your videos. I truly enjoy all your knowledge. What would you recommend we use to clean the door for optimal life.
The door is plexiglass. Any plastic or glass cleaner.
@@Philat4800feet cleaning the inside of the plexiglass door with glass cleaner won't be absorbed by our food?
@@violet2433 Probably not. Evaporation would remove most of the product prior to using. The direction of travel (flow), within the chamber is from the frozen food to the chamber wall via sublimation. If this is a concern you could use a slightly damp microfiber cloth to clean the door.
Great Video! Will putting the 70% Alcohol on the rubber gasket dry it out and cause it to crack or fail over time?
Never did research on the gasket. perhaps mild soap? I'd use alcohol in the deep grove to kill mold. A good place to hide.
I must ask Phil, how did you solve the corroded ball valve issue? Did you replace the ball valve yourself? Where did you acquire the right one.
Or did you have to get Harvest Right to send you a new part?
I purchased a 3/8" ball valve from Home Depot and installed it my self. There's a video on it.
@@Philat4800feet That's awesome. Thanks for the response. As a new FD owner, I've learned quite a bit from your channel.
You mentioned in the video possibly cutting the alcohol 50/50 but I noticed you used straight alcohol when you cleaned the chamber. do I use it straight or cut it, or doesn’t it matter?
For those who are accident prone, cut it with 50% water. For those who are careful, full strength.
IPA in higher concentrations is flammable like gasoline or acetone. So as long as you aren't doing something like smoking while cleaning, you are good with high concentrations. That said, it burns off very quickly so it is unlikely to cause any harm even if it does catch fire.
Phil when you were using the alcohol from the bottle is that considered diluted already or do u have to dilute it more?
I was using it full strength. if you are worried about igniting the alcohol, diluted no more than 50% with water. As far as drying time, by the time I have everything reassembled the smell is gone.
Thank You!
You're welcome!
Wonder, if instead of a towel you used a spray bottle to apply the alcohol.
I know that towel wasn't sterilized before you used it.
Yup. It's the towel I always use. I have since started using a spray bottle.
How about Five Star PBW or Starsan used in the brewing industry? You can get them from any brewing supply store. Would like to hear your thoughts.
I had to look PBW and Starsan up. The PH level for PBW is 12. For Starsan (Star San) is 3.5. 12 is really high on the PH scale (alkaline side), while 3.5 is about the same but on the acidic side. The better cleaners should be around 6-8.
So the brewing industry has been cleaning their stainless vessels with the wrong stuff. They clean after every batch with PBW and for good measure they spray everything with starsan just before starting a new batch. I have not heard of any problems with it breaking down stainless after decades of use. They pump it through their hoses, pipes and valves that are not easy to disassemble and clean.
I can't speak for the brewing industry, but... There are two issues: 1. ASTM wrote the standard A380 for cleaning stainless steel and retaining the protective chromium oxide finish and only a PH neutral cleaner should be used. 2. According to the FDA, and most health departments, only approved cleaners should be used around food. Cleaners not approved must be rinsed, and then sanitized with an approved sanitizer. For home and personal use you can clean your FD with anything. If you start selling food to the public that changes everything. I doubt any of us will ever clean the chamber of the FD enough to ever see it fail. Perhaps I'm being too anal retentive. I just believe in doing something right the first time.
Phil thinking about using a spray bottle with 50% to spay the shelves. They are very difficult to clean because of small clearance. Though the spray would work for getting into those difficult areas. Thoughts?
I think you would be good. The adhesive holding the heating pads is proprietary to the manufacture. Even HR doesn't know what it is.
If you don’t have small fingers to get into around those spaces, you can use a bottle brush, along the variety of the ones people use for cleaning homebrew set ups.
Checked for Nitric acid based cleaners. While it cleans and improves Stainless COMPOUND CR-120N for example needs a LOT of PPE to use and has PH < 1. ISO wins.
That's the down side of it. Best just to use alcohol.
What is the foil on the sides of rack?
ua-cam.com/video/kReZbaemsHs/v-deo.html
Do you dilute the alcohol 50% with water?
There is a liability factor to consider. A 70:30 mix* (recommended by the CDC) will keep the vapors from igniting with spark and flame. 50:50 will still work. *(70% alcohal:30% Water)
I have been using Envirocleanse-A.
Looks like the PH on Envirocleanse-A is 6-7. Pretty much neutral. the SDS shows the following:
Biocide/Disinfectant (EPA Reg. #85134-1) for use on hard surfaces as well as biocide in oil
fracking & sour wells, disinfectant of food, and disinfectant of potable water.
The SDS shows it's fairly safe.
Phil thanks for your thorough process of showing the evidence. You must have worked sometime in a chemistry lab or bio lab?
I wonder about alcohol. Can it be used on the shelf fixture? Especially worried about using alcohol on the heater element part of the shelf.. The resin and/or plastics used in the heating component may be damaged by alcohol.
Alcohol is a close to neutral PH. But alcohol is also a powerful solvent capable of dissolving and or dry cracking synthetic resins over time. What are your thought on the shelf rack cleaning process?
My research was only with the stainless steel. I'm sure I know who makes the heating pad. I will contact them.
@@Philat4800feet Very thoughtful for you to do this. I appreciate your search for the evidence based truth in a systematic and scientific manner.
@@Philat4800feet Hi Phil, I am wondering if you ever contacted the company that make the heating pads and found out if it is safe to use alcohol to clean them. Really appreciate all the work you do and share with everyone. I recommend your videos every chance I get. Thanks!
Phil, what ratio of isopropyl alcohol to water do you use to clean the chamber?
Keep the alcohol at 70%, but be aware that alcohol at this level can still be flammable. Keep the solution away from open flame or spark. I would keep it in a liquid form, not a spray.
Can the isopropyl alcohol deteriorate the rubber gasket?
I don't believe so, but I would remove the gasket while cleaning, and clean the gasket with water
Did you also sanitize the shelves? If not, some of the bacteria could have come from there.
I try to clean everything
Do the shelves just pull right out?
1. You'll need to remove the door gasket, by pulling on it.
2. Slide out the shelf assemble carefully.
3. While holding the shelf assemble with one hand, release the wire harness plug by pressing the release button.
Did you use the alcohol on the heat pads.
No, just the stainless steel. The makers of the pads have a proprietary adhesive. They won't even tell Harvest Right. I use warm water and mild dish detergent and rinse (wipe) serval times. I'd be careful on anything that could dissolve the glue.
What about cheap vodka?? It's cheaper than isopropyl alcohol
Perhaps, but cheap vodka isn't approved by the FDA and most health departments. This would be important if you are going to sell your food.
What about bar keepers friend? It is supposedly made for stainless steel.
Is it approved for food preparation? The PH is 1.5 to 2.5. That's fairly acidic.
So how often should we change the ball valve
Hard to say. How often do you use your freeze drier? My FD runs 24/7 and I replaced after a year. I would occasionally dip the drain tube in water and see if it sucks up or wait for a vacuum error message.
@@Philat4800feet thanks
Dawn is not a "mild" cleaner. Does anyone remember, "You're soaking in it."?
You're correct. Dawn is rated between 8.7-9.3 on the PH scale (alkaline) and is not approved for food surfaces. Dawn, like most dish detergents, requires rinsing and sanitizing.
How do we clean the drain and gromet?
Are you referring to the ball valve?
Have you tried 35% Food Grade Hydrogen Peroxide? Would it damage any of the components?
That has a PH of 3.5. This is on the acidic side of the scale. Stainless steel should have a neutral cleaner around 7
@@Philat4800feet Thanks Phil.
How about Vodka or EverClear as cleaners? I see those posted a lot.
The PH of vodka is around 4 (acidic side). Rubbing alcohol is between 6-8 (more neutral)
I wonder what the PH is of Ivory dish soap.
9.5. Also leaving behind a soapy residue.
@@Philat4800feet ah, thank you so much. I did try to research it.
Brave man touching the wife's purse
I lost my man-card a long time ago.
@@Philat4800feet lmao!! Let's just say we never lost ours...sshh secret