Very cool test, love your tools. My addition - I’m a certified Mitsubishi tech rep and since there no driers in the system you must do a triple evac. 4,000-nitro-1,500-nitro-500 decay test. I love the Navac 4cfm battery pump for residential because it doesn’t pull down as quickly as the 7+CFM pumps and still takes less than 10min to do the whole process minus the decay if you are using the right hoses.
Wow I can not believe I have not seen this video yet and it is the end of April 2021. Anyway subscribed and hit the bell to keep that from happening again. Thanks
Thank for the video Jim. I'm curious, in the situation you demoed, would a triple evac help get the moisture out quicker. I have always thought that is why we triple evac but did not here you mention that. Thanks Edit: I saw this question asked and answered in the comments. New question, why do we triple evac then, if not to remove moisture????
" Shop talk sent us " i'd be interested to see how much time would really be saved with these on the small stuff i work on. everything i work on these days is under 1 hp for the most part. usually 1/2 hp or less. i could see where these would be Majorly beneficial if i was Pulling down a 30 ton chiller system.
It was Good to see how water is get removed. anyway Is it good to be another solution if i heat the pipes with torch or cover the lines with thermic rays (you know it has 60'C)? i think it will be work, dont you?
Question. So if the weather is warm and we need to leave vacuum pump overnight. Is it best to leave the condenser fan motor and blower motor running to help keep heat over any place the moisture may be collected in so it’ll keep heat on the pipes boiling the moisture?
Jim, if you have moisture in the system and you level out around 2000 microns, would it be helpful to sweep the system with nitrogen and bring it back to a positive pressure then blow the nitrogen out, or just let the pump keep the vacuum pulling?
Is that moisture still left at the sight glass or just oil from ref? If vacuum is taking longer, should I just keep pulling vacuum until it goes down or do triple evac and break it with nitrogen?
Nope, think about where the sight glass was. Unless you pushed through it you cannot sweep it. The only thing you would sweep would be water vapor and you would remove anyway.
Good video! Can someone help me understand why the water will become ice in this situation? When the pressure is so low, even ice should have melted or even directly evaporated. I understand that the temperature has dropped as well when pulling, but which one dominates here?
For one, water cannot exist in deep vacuums, it's either ice or vapor phase. And some of it turns to ice because the phase transition takes away energy and the ice ends up extremely cold. If you've pulled a deep vacuum where theoretically all water and ice should be gone, it's still possible for some ice to exist because it's at much lower temperatures than the surroundings. I plan to wait long enough for conductive or radiant heat transfer to equalize temperatures and get rid of the ice. The issue at that point is that you end up with a deep vacuum that's high in water vapor content. Purging with dry nitrogen and pulling another vacuum is good to dilute out the H2O in the system and also add heat energy in case there's any cold ice in there.
Assuming evaporation is faster than sublimation is incorrect although the boring affect did accelerate the process becuase it can happen not just on the surface but also inside. Taking the boring affect aside, sulimation is just as quick as evaporation.
More than a few times I’ve come across a catastrophic Leak that is open to the atmosphere for several days with rain. I’ve been told that the POE oil holds onto moisture. Will that moisture be able to be pulled out of that oil? or is a preemptive compressor change out still the best approach?
@@Pennconst101 For a residential system it is not easy or practical. You would have to pull the compressor and drain it then install new oil. Instead, Install a flare liquid line dryer with a sight glass down stream and monitor it for a few weeks to make sure it is dry. You can have the home owner look at it and let you now if it may need changed again. If it does, pump it down and do a quick evacuation and let it run another week until it is dry. Go with a larger dryer. The only downside is you will need a little more refrigerant.
Shop Talk sent us. Another great video
"shop talk sent us" to watch another great video!!
Shop Talk sent us but I’ve been here many times great videos keep it up😎🤘
Love TruBlu! Shoptalk mentioned tonight to say hello. Shoptalk sent me.
ShopTalk sent us! I really don't mind watching this again.
Love the site glass view. very visual. as always great video and explanation Jim
Very cool test, love your tools.
My addition - I’m a certified Mitsubishi tech rep and since there no driers in the system you must do a triple evac. 4,000-nitro-1,500-nitro-500 decay test. I love the Navac 4cfm battery pump for residential because it doesn’t pull down as quickly as the 7+CFM pumps and still takes less than 10min to do the whole process minus the decay if you are using the right hoses.
Shop talk sent me!! Jim you are the Man!!!
“Shop Talk Sent Us” you guys are great. Thanks for the video.
Shop talk sent us, nice video Jim
Shop talk sent us. Great videos
Shop Talk Sent Us. Nice demo.
“Shop Talk Sent Us” thanks for everything Jim
Might add that if there is bubbling in the vacuum pump oil sight glass that is an indicator of moisture in the oil.
"Shop talk sent us" always enjoy listening to him.
“Shop Talk Sent Us”. Great demonstration Jim
Shop Talk Sent Us. Excellent tutorial. Thanks.
ShopTalk sent us, thanks Jim!
Such an awesome video Jim! I always wondered why sometimes my vacuums would stall around 2500 or 3000 microns. Now I know
But sometimes also means you have a leak.
“Shop Talk Sent Us” Jim is the man!
Shop Talk Sent Us! Great video Jim. Have a great evening! God bless.
Jim it was great to watch you on hvac overtime. I was able to download the COMBUSTION literature. Thanks for the information.
Cool to actually see the water boiling off. Thanks for the info and video.
Good video Jim. Oh and shop talk sent us.
I came for the give away but I'm glad I stayed and watched. Good video thanks for taking the time. BTW I bought that same set up you are using.
This was a long video with tons of good info. Glad that it was not even one minute shorter!
Shop talk sent us. Great video
Good job Jim! Shop talk sent us.
Shop talk sent us. Thanks for the video
Jim thank you for all you do .
“Shop talk sent us”, love you videos Jim.
Shop Talk sent me Love the video
“Shop Talk sent us” Always enjoy the evacuation process. Did it on R-114 units on a sub
Shop talk sent us- thanks for the information Jim.
Shop talk sent us. Amazing videos and tools
shop talk sent us good information
Shop Talk sent us here
Shop Talk Sent Us. Good info.
Shop Talk sent us!!!
Shoptalk sent me, great video, I'm looking forward to giving this a try.
Shop Talk sent us thanks Jim
Outstanding demo, THANKS!
Hello Jim. Good video.
Shop Talk Sent Us (A.K.A. Zach). Thanks.
Shop talk sent us jim is the hvac god i pray too
Aaaaaaaaammmmazing video thank you so much! This just answered so many questions I have had while using my trublu hoses
Shop talk sent us, great products 🤙😎🤙
Thank very much from Russia!
Very best!
"Shop talk sent us" great video Jim
SHOPTALK sent me!!!!!! Great video!!!!
Wow I can not believe I have not seen this video yet and it is the end of April 2021. Anyway subscribed and hit the bell to keep that from happening again. Thanks
Shop talk sent us. Thanks jim.
Trublu! Shoptalk sent us!
Shop Talk sent us.
Shop talk sent us !!!!!!!!!!!!!!
Thank for the video Jim. I'm curious, in the situation you demoed, would a triple evac help get the moisture out quicker. I have always thought that is why we triple evac but did not here you mention that. Thanks
Edit: I saw this question asked and answered in the comments. New question, why do we triple evac then, if not to remove moisture????
Thanks Jim!
"shop talk sent us" nice demo!
thanks
Shop Talk sent us!
Shop talk sent us 👍👍👍
Shop talk sent us!!!
Purging some nitrogen through while pumping will help dry the system out considerably faster.
Dry as well as good-n-tight.
Never used trublu can’t wait
" Shop talk sent us " i'd be interested to see how much time would really be saved with these on the small stuff i work on. everything i work on these days is under 1 hp for the most part. usually 1/2 hp or less.
i could see where these would be Majorly beneficial if i was Pulling down a 30 ton chiller system.
Shoptalk sent us jims the man
shop talk sent us thanks jim
Shoptalk sent us..See ya soon on shoptalk
ShopTalk sent us
It was Good to see how water is get removed.
anyway Is it good to be another solution if i heat the pipes with torch or cover the lines with thermic rays (you know it has 60'C)?
i think it will be work, dont you?
Yeah, cool it Waffles! 🐶
Question. So if the weather is warm and we need to leave vacuum pump overnight. Is it best to leave the condenser fan motor and blower motor running to help keep heat over any place the moisture may be collected in so it’ll keep heat on the pipes boiling the moisture?
Rip to that pumps vac oil 😢 poe refrigerant oil is microscopic like vacuum oil does a deep vacuum pull all the moisture out the oil ?
“moisture being absorbed by the copper”
how do I find any materials explaining that process
Shop talk sent us!
I saw this vid earlier.. BUT,SHOPTALK also sent me!😉
Jim, if you have moisture in the system and you level out around 2000 microns, would it be helpful to sweep the system with nitrogen and bring it back to a positive pressure then blow the nitrogen out, or just let the pump keep the vacuum pulling?
The only thing nitrogen would do is allow it time to melt if it was ice. The best bet is to just keep pulling.
After blowing Nitrogen thru add a shot of refrigerant (triple evac) if nobody is watching!
Shoptalk sent us!
If you are pulling a vacuum on a system with an old filter drier are you dehydrating the filter drier desiccant?
oh and shop talk sent us
ShopTalk sent us !!
Shoptalk sent us!!
You can heated up to accelerate
Is that moisture still left at the sight glass or just oil from ref? If vacuum is taking longer, should I just keep pulling vacuum until it goes down or do triple evac and break it with nitrogen?
Shop Talk Sent Us!
Jim if running a nitrogen sweep for 15 minutes at 3 to 5 cfm, would that push the water out much?
Nope, think about where the sight glass was. Unless you pushed through it you cannot sweep it. The only thing you would sweep would be water vapor and you would remove anyway.
Thanks jim for the tip.
"ShopTalk Sent Us" Accutools rocks!
Does purging with nitrogen help to expel moisture before evacuating?
Shop talk didn’t send me lol jk. It looks like there was still some water in the sight glass when you removed the core the 2nd time.
Ulises Palacios. It had some oil in it.
AccuTools 👍🏼 I see. Great demo
Shop Talk sent us
Good video! Can someone help me understand why the water will become ice in this situation? When the pressure is so low, even ice should have melted or even directly evaporated. I understand that the temperature has dropped as well when pulling, but which one dominates here?
For one, water cannot exist in deep vacuums, it's either ice or vapor phase. And some of it turns to ice because the phase transition takes away energy and the ice ends up extremely cold. If you've pulled a deep vacuum where theoretically all water and ice should be gone, it's still possible for some ice to exist because it's at much lower temperatures than the surroundings. I plan to wait long enough for conductive or radiant heat transfer to equalize temperatures and get rid of the ice. The issue at that point is that you end up with a deep vacuum that's high in water vapor content. Purging with dry nitrogen and pulling another vacuum is good to dilute out the H2O in the system and also add heat energy in case there's any cold ice in there.
SHOP TALK SENT US!!!!!
Shoptalk send us!
I do not know how I got to this video? 🤔
.
The algorithm got me here.
SHOPTALK sent us!!
Assuming evaporation is faster than sublimation is incorrect although the boring affect did accelerate the process becuase it can happen not just on the surface but also inside. Taking the boring affect aside, sulimation is just as quick as evaporation.
ShopTalk Sent Us!
Shop Talk Sent Us.
Shoptalk sent us
More than a few times I’ve come across a catastrophic Leak that is open to the atmosphere for several days with rain. I’ve been told that the POE oil holds onto moisture. Will that moisture be able to be pulled out of that oil? or is a preemptive compressor change out still the best approach?
Change out the oil and install a new dryer
@@accutools6288 Residential sealed compressor. Serious question… How do I change the oil on that?
@@Pennconst101 For a residential system it is not easy or practical. You would have to pull the compressor and drain it then install new oil. Instead, Install a flare liquid line dryer with a sight glass down stream and monitor it for a few weeks to make sure it is dry. You can have the home owner look at it and let you now if it may need changed again. If it does, pump it down and do a quick evacuation and let it run another week until it is dry. Go with a larger dryer. The only downside is you will need a little more refrigerant.
@@accutools6288 That’s a great idea. I really appreciate that.
Shop y’all sent us