harrisgo

Hi Tony, Thank you very much for the explanation! I have figured out that the issues are the mostly the water vapor the system of the pump, it caused great deal of rust in my pump. Your great experiment about coating the pump house might be worth to try aswell. I would like to know the result of the several layers configuration of quilt battling, as it is might cause an efficiency loss of the vacuum i think. And yeah about the icing build up. Can you tell me more, especially when do you stop the FD process-defrost it-and turn it on again? Do i need to check it within 7 hrs after the drying phase starts?

Hi Deryn, i had run another FD test with only 2 trays of apples yesterday. In the vacuum/drying stage, the readings can reach up to 500 mtorr after 7 minutes the pumps starts and the goes back up again. Then after next cycle, the system can only reach minimum 580 mtorr (the next 5 cycles as i can remember), and after that in only reach 610/620 mtorr and goes up to 990/xxx mtorr (these cycles kept repeating). There is no vacuum leak as i can recall: no leak in the door seal (i checked that even the single paper cannot slip pass the seal before the drying stage begun), no leak in the vacuum in the hose, the vacuum drain had been closed, and most importantly there is no oil mist coming out of the oil demister. There is a different sound for the pump though. The first 10 minutes of running, the pump was in the constant hump, but it was far LESS noise compared to the rest of the cycle where there are a bit of the trickling sound sometimes. I opened up the case of the pump and turns out there are little bit of rust (2 bolts inside the cartridge were rusted) and water vapor. I don't know if this the main problem that my pump is not working properly to pull a deep vacuum.

Hi all, My FD machine had arrived a week ago and since then i have tried 3 batches of banana and avocado. But it seems i have a problem with the FD because it cannot reach below 500 mtorr and on cycle 1-9 the readings varied between 500 and 700 mtorr. I have checked all the possible leak cause at the machine and the the vacuum pump, but nothing seemed to be the problem (as all seems leak proof to me). One thing i noticed that the oil in the pump were milky. Do anyone have the same problem as me or should i do a full oil draining in the vacuum pump? Thanks before. NB. I did pull off the rubber gasket when the Machine arrived, but i managed to put it back and i checked during the freezing and drying process that there is no leak from the gasket seal. Cheers, Harris

Hi all the foodgeek in the forum , My name is Harris from Indonesia. I just bought Harvest right freeze dryer recently and the machine will be shipped it here. I have questions regarding the electricity consumed by this machine: are any of you have a calculations on how much do you spend on electricity for this machine? (or better how much energy does it consume for a batch of production, lets say.. 8 lbs of banana? My plan is to use this machine to for many kind of food and non-food experiment at home. I will be grateful for any kind of response you guys have. Thanks Cheers, Harris