Aw man! I was just getting into real good and it ended. Really appreciate all the time and trouble you take helping us all out in our quest.

@Philat4800feet

2 жыл бұрын

Thanks, sometimes I wonder if they're too long.

@HereThereBackAgain

2 жыл бұрын

@@Philat4800feet it's a fine line, I was hooked and ready for more as well. The video was veryl clearly thought out and illustrated. I know it takes a while to to this, but it WILL keep people more engaged and willing to stick around. Hopefully I get my freeze dryer past the bread run. Got a bad feeling it's going to be a lot of troubleshooting.

@earlgough3305

2 жыл бұрын

@@HereThereBackAgain ditto

@ramohino

2 жыл бұрын

I was waiting for the part of why all of earth doesn't get FD?? ☺Earth is surrounded by a vacuum and all mass has gravity

@ww3659

Жыл бұрын

@@ramohino Ahh, a free thinker! And since gravity is a "weak" force, is it really strong enough to prevent the atmosphere from being ripped from the planet? Maybe all that's needed are three sheets of tin foil to hold the atmosphere in--it worked for the lunar lander... 🤣

This was a wonderful explanation of Mtorr - I've been trying to understand this since I got my freezer dryer 2 years ago...Thank you...I finally "got it"

Thanks so much for explaining Mtorr. I could not find any information on this. Your teaching is much appreciated . Sincerely Susan

@Philat4800feet

Жыл бұрын

You are very welcome

Thank you for explaining. I was so confused about the MTorr!

you are fascinating. So smart. Thank you for all the time you devote teaching us.

@Philat4800feet

Жыл бұрын

Thank you

It was interesting. I didnt think there would be any difference in pressure at a higher level since the chamber is a sealed rigid unit. Thanks for changing my mind.

Another great video... Always full of useful content

@Philat4800feet

2 жыл бұрын

Glad to hear that!

Thank you, I’m still a bit confused on mTor but I think it’s just my sorry old brain. Plus I’m not going to sit in my basement and watch to see when and how it changes. Oh, I’ll get a camera and link it to my phone. Anyway, love your videos, please keep making them..

@Philat4800feet

Жыл бұрын

Thank you

Phil, excellent, outstanding presentation! I’m sure someone pointed out the slight error with 720 torr/mmHg when it should have been 760. It is inconsequential.

Good job Phil! I'm a process engineer, you explained your topic well. Kudos

@Philat4800feet

2 жыл бұрын

Thanks

Thanks for making the video. Making my first run with the large harvest right FD. Nice load of white bread to get rid of the “new car smell”. Let it run overnight and it is in the drying stage now. I was looking at the front panel and see a reading of 576 mToor. Looks like I’m pulling a great vacuum (220ft altitude). Took me a little while to start this guy up, didn’t realize that you need a dedicated 20 amp circuit to run the large machine so had to pick a place in the house that is pretty permanent.

@Philat4800feet

2 жыл бұрын

My son, go forth and freeze dry the world.

@rexhavoc2982

2 ай бұрын

Take a close look at a vacuum conversion chart.

Got it, thanks 👍. I didn't have clue before.

Thanks for your time and effort. I was thinking that you would address the Harvest Right magic number of 500 mTorr when the tray heaters kick on to jump start sublimation and that they kickoff at around 650 in order to drive the moisture out of the product to be condensed on the chamber wall. The readout will go up and down between the two numbers as the heaters kick off and on until there is no more moisture (relatively) left to extract. The best indication of completion is an mTorr under 200, if the machine is capable.

@Philat4800feet

Жыл бұрын

Good thought process.

@nataliedana2122

Жыл бұрын

I was getting nervous that I was possibly doing something wrong and endangering my pump when the vacuum got as low as 150 so I stopped it. Product was perfectly done. Am I to understand that a reading of 200 or less is safe for my premier pump and also a good indicator of doneness?

@Philat4800feet

Жыл бұрын

@@nataliedana2122 Safe and very effective.

Watching this at 5,300 ft. while my FD is at 224 mT. Thanks for the video, Phil!

@Philat4800feet

2 жыл бұрын

That's a great vacuum!

Thank you, very interesting

Very informative, thank you

@Philat4800feet

2 жыл бұрын

Very welcome

Good job. I just got a new in/Hg gauge and my 60 day old HR pump pulls 15 in/Hg or 380 torr.. I think the pump should pull close to 30 in/HG or 0 torr. I also think food would dry faster and better with more vacuum. I also think as soon as the chamber is under 0 torr and a ball valve on the suction hose is closed the pump could be turned off for all the hours of dry time, with no leaks. Why keep sucking on a chamber that is not loosing vacuum? Thanks,

You got all this right except for the images of the so called heliocentric model of the earth, which is a flat stationary plane.

Great explanation. I have a HR dryer, and did not understand.

@Philat4800feet

2 жыл бұрын

Glad it was helpful!

I wonder how to convert the 500 mtorr th like atmospheres, like say how far up in the sky does it measure 500 mtorr, like what would be the pressure in mtorr, at the edge of out atmosphere at that 62 miles up mark?

thx

Just wanted to let you know that when you use the prefix "M" that stands for mega- and lowercase "m" stands for milli-

@Philat4800feet

9 ай бұрын

Bad habit

Great video. Very good explanation. One correction. Atmospheric pressure of 29.92 mm of Hg is equal to 760 torr or 14.7 psi.

@Philat4800feet

2 жыл бұрын

Thanks for the info!

so if I'm at 3428ft above sea level what should my pump gauge be showing in HG? I'm have a leak problem and I suspect it's the pump.. I noticed batches were taking longer and the last time the pump turned on it sounded weaker and the oil. in the oil glass is only bubbling in one side and not both when the pump turns on.

@Philat4800feet

2 жыл бұрын

At 3428' you will have less pressure and less air inside your chamber. Your pump will be able to draw down to 500 Mtorr faster then me or others lower than your attitude. At 3000' in/hg is 26.82. At 4000' in/hg is 25.84. Your location would be between these two numbers.

So anything 500 and under is good? I’m at about 2500 ft elevation and I’m getting well below 500 mTorrs, it’s all new to me so as I’m watching I’m not sure what I’m looking for. Your explanation helps.

@Philat4800feet

2 жыл бұрын

Yes, 500 and lower is great. Go forth and freeze dry the world.

I was frustrated that I couldn't get my freeze drying Mtorr lower even though food was processing fine. What could I be doing wrong? Well, I live at a low altitude, mystery solved. THANK YOU for explaining the science!

@Philat4800feet

2 жыл бұрын

How far down will it go? It should still get pretty low, just takes a little more time.

Very informative. Currently fighting with my dryer vac issues. Waiting on a new pump. Strangley, the old pump measured 30 in/Hg while running, which would mean it was good? The service mode says I'm not getting below 20000mtorr

@Philat4800feet

2 жыл бұрын

20,000 Mtorr is about 3/4".in/hg This may be hard to detect on a in/hg scale. This is how fine the Mtorr scale is. Have you checked out any vacuum leaks?

@david84ss

2 жыл бұрын

@@Philat4800feet yes, checked the door seal, drain valve and inlet line. Have not checked the epoxied wire hole. I'm leaning towards the pump because it happened right after I opened it up, and desludged it, and it was particularly sludged

Harvest Right just replaced my white oil free pump I bought with my Medium unit last February due to vacuum failures. lucky for me I had an original oil type pump to pinch hit for it and prove quickly that it was a pump failure causing the vac alarms. They were real good about doing the warranty service - spot on. I am at 1800 ft elevation, as I understand it a pump has to work harder to achieve under 500 Mtorr the closer it is to sea level. In 10 months that pump did about 90 loads which I think isn't that hard a life for a vac pump? Do you think I overworked it?

@Philat4800feet

2 жыл бұрын

If you run the pump with clean oil, keep the moisture out, and allow the outside to cool, it should run for many years.

@bscc123

Жыл бұрын

@@Philat4800feet I just got my FD and I did approximately 3 vacuum only tests with skittles and other candy, following the steps in your other videos. I noticed it was worse each time I did a test and when I checked the oil gauge it was cloudy. I’ve emptied it and flushed the pump. It now has new oil but I’m wondering how water got in there? It’s quite humid where I live at the moment. Do you think the problem will be resolved if I use a dehumidifier in the room where I have the FD?

@Philat4800feet

Жыл бұрын

@@bscc123 Could there've been water in your drain hose or in the corrugated plastic sheeting at the top and bottom of the shelves? Any water will go to vapor and will be sucked up by the vacuum pump as the chamber in pumped down. I use a small fan to defrost my chamber. The air movement might help drying your chamber.

@nataliedana2122

Жыл бұрын

@@bscc123 This also happened to me the first time I tried the 'skittles in 3 min' method. I assumed i had run too many total batches and just needed an oil change, which I then performed. At first I was happy with my skittles but I really had no idea what they were supposed to end up like. I ran many batches to gift for Christmas. Then, to my horror, I noticed the skittles began to shrink significantly within a day or 2, becoming sad and chewy again. I was frustrated but determined to figure out what went wrong. Last night I tried again and had great success! This time I pre-warmed the skittles to 170 F. for 5 min then put into the FD. I set the shelf temp to 150F and forced my Harvest Right straight into Final Dry mode and I let it run for 3 hours. I finally pulled them out when the chamber reached 150 mT vacuum. They are crunchy, amazing and a completely different, vastly superior product than my first attempt! I was surprised to see how much ice had formed on the chamber during this process and led to assume that my first attempt failed due to the very high moisture content that was left in the product when I only put it under vacuum for 3 min.

I see so many questions on FB.. I say go to Phil at 4800 ft.

@Philat4800feet

2 жыл бұрын

Thanks

If I am understanding this correctly then at 38 feet above sea level it would take much longer to reach 500 mtorr? So if mine is getting to 640 in 30 minutes is that good? We haven’t used our freeze dryer in over a year due to other things going on and restarting now but I don’t remember what it was able to get to when we first got it 😫 on one test it got to 540 around 40 minutes.

@Philat4800feet

Жыл бұрын

The higher you are, the less air. It will take a shorter time to pull a vacuum as elevation increases because there is less air (density). Just as a comparison, I'm running a batch of strawberries. My unit was at 290mTorr. I turned off my premium pump, and opened the door, shut the door, and started the pump back up. It took 4:36 minutes to get back to 500mTorr. Make sure your oil isn't too old. You can pull a better vacuum when your unit is colder than at room temp. Also check your hose tightness and other locations for a vacuum leak.

QUESTION...IS THERE A GENERIC VACUUM PUMP THAT CAN REPLACE THE HARVEST RIGHT?

@Philat4800feet

Жыл бұрын

Yes, several. Use the same specs as Harvest Right and shop around. The HR Premier is a pretty good deal.

The higher the altitude and lower the humidity the easier it is on the freeze dryer? My freeze dry after learning its going to Florida "sh%t"

@Philat4800feet

2 жыл бұрын

Don't give up yet.

I live in an area where the average elevation is 13 feet above sea level. Will this affect my vacuum pressure. I've never been able to get it lower than 1500 mT.

@Philat4800feet

Жыл бұрын

It shouldn't, it may take a few more minutes to pull a vacuum. If you can't get to 500 mtorr you may have a leak. Have you done anything to find one? How long have you had your FD?

@ginayang1331

Жыл бұрын

​@@Philat4800feet I've just had it for a month. I went back and tightened everything and now it's going down. I'm seeing 178 mT now. Is that fine?

@Philat4800feet

Жыл бұрын

That is really good

What about Harvest Right's new "AI" software that changes science so you don't need to get below 1500mTorr? How does that work Phil?

@Philat4800feet

Жыл бұрын

The principle with freeze drying is to remove the moisture in food without high temperatures. moisture (water) is removed when it becomes a gas at boiling. I can boil water at 78 degrees at 30,000 mtorr. Although there may be a food quality issue. At 500 mtorr the quality of the food is better. The greater the vacuum, the faster the batch and the better quality of the food.

@kevinrowbotham545

Жыл бұрын

Thank you that makes perfect sense.

You left out the part of how much vacuum is needed at a higher elevation.

@Philat4800feet

Жыл бұрын

Sorry

M is mega, m is milli. You’re using M for milli in several graphics.

@Philat4800feet

Жыл бұрын

Thanks, I'll keep that in mind

quantum physics is hooey

@Philat4800feet

4 ай бұрын

It like something they made up when they could explain something.