Connect & Disconnect Refrigerant Gauges! Low Loss Fittings!
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- čas přidán 8. 09. 2024
- HVACR Training: What are HVACR Low Loss Fittings? I Discuss and Show their use to Connect and Disconnect the Refrigerant Manifold Gauge Set Hoses on an Air Conditioning or Refrigeration System. EPA Section 608 says to use Automatic or Manual Low Loss Fittings. Supervision is needed by a licensed HVACR Tech while doing this as Experience and Apprenticeship garners Wisdom and Safety.
Tools Used In The Video
Thumb Screw Valve Core Depressor with Backseat- amzn.to/2mR0sCL
Yellow Jacket Sealright 90 Coupler- amzn.to/2LsU1V7
Yellow Jacket 1pk Compact Ball Valve- amzn.to/2uXdF18
Yellow Jacket 3pk Compact Ball Valve- amzn.to/2AiKfQe
Yellow Jacket Refrigerant Manifold Gauge Set used in the videos amzn.to/2aenwTq
Refrigerant hoses with valves used in the videos amzn.to/2aBumVI
Blue Vapor Yellow Jacket Gauge- amzn.to/2Ju7pan
Red Liquid Yellow Jacket Gauge- amzn.to/2sSFmGH
Quick Coupler for the Gauges- amzn.to/2sTk8Ze
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⚠️ Disclaimer:
Information in this video is intended for educational purposes only. Any work related to the topics in this video should be performed by licensed technicians or by apprentices under the supervision of licensed technicians. AC Service Tech LLC is not responsible for any possible damages or injuries caused by the use or misuse of any information provided.
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For those that are looking for the tools used in the videos: (Linked Below)
Here is the Yellow Jacket 1pk Compact Ball Valve- amzn.to/2uXdF18
Here is the Yellow Jacket 3pk Compact Ball Valve- amzn.to/2AiKfQe
Here is the Thumb Screw Valve Core Depressor with Backseat- amzn.to/2mR0sCL
Here is the Yellow Jacket Sealright 90 Coupler- amzn.to/2LsU1V7
Here is the Link for the Yellow Jacket Refrigerant Manifold Gauge Set used in the videos amzn.to/2aenwTq
Here is a link to Refrigerant hoses with valves used in the videos amzn.to/2aBumVI
Here is the link to the Blue Vapor Yellow Jacket Gauge- amzn.to/2Ju7pan
Here is the link to the Red Liquid Yellow Jacket Gauge- amzn.to/2sSFmGH
Here is the Quick Coupler for the Gauges- amzn.to/2sTk8Ze
Here is a link for RectorSeal Bubble Gas Leak Detector amzn.to/2ckWACn
Here is the link to the Appion Valve Core Removal Tool- amzn.to/2uYr8WL
Here is the link for the Ratcheting Service Wrench amzn.to/2dGV4Nh
Here is the Link for the newer UEI DL479 Multimeter with temp sensor- amzn.to/2jtsUbJ
Here is the link to the CPS Vacuum Micron Gauge- amzn.to/2v1nM3O
Here is the Link to the Appion Blue 3/8" to 1/4" Vacuum Hose- amzn.to/2uYlVyc
Here is the Link to the Appion Red 3/8" to 1/4" Vacuum Hose- amzn.to/2uYg6Ro
Here is the link to the Yellow Jacket 1/4" by 1/4" heavy duty hose straight- amzn.to/2umtcod
Here is the link to the pack of 25 C&D valve cores- amzn.to/2J1lurm
Here is the link for the C&D Valve Core Wrench, Container, and 3 valve cores- amzn.to/2EVGkps
Other tool links can be found in the video description section.
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AC Service Tech LLC quick question, a coil that hasn't been cleaned in 12 years , can it be cleaned while still in the furnace? This summer I've been having an airflow problem, 7 techs have went out. And no solution. Non of them checked the coil I ended up checking it , it was black full of hair and mud . I sent someone to clean it , but I think they didn't remove it
Wow, yeah you can clean it while still in there, thanks
What kind of gloves do you recommend?
this is so much better than the class im taking right now where the teacher cant stop talking about the "good ol days"
😂😂😂😂
The low loss fittings are a must 100 percent difference !!!
wow i needed this. the guys i work with don't use low low fittings at all.
Got a couple questions.
1. Do you vacuum both high and low side ports or will just one side suffice.
2. Do you always remove the valve core for charging and vacuuming.
3. Do you replace the valve core everytime it's out.
I appreciate what you do and the info and learning and education that you put out to make other people better and learn more.
1. always both because the metering device acts like a restriction half way down the tubing.
2. vacuuming yes, breaking the vacuum with refrigerant, yes, adding extra refrigerant into an existing system no
3. No only on old or leaking units, thanks
@@acservicetechchannel thanks for what you do. Happy New Year to you and your channel.
Great video. The channel must be doing well ! I see you made it a business! Congratulations
Thanks Channel Cat Chaser!
How many liquid gas in the hose and guage after close valve. If scale use manufacture said 650gram gas but when i use scale in the two hose lines and gauge has a gas. Is we r filling less gas. Need to fill 700 gram gas in it?
Good video never like low lose fitting I don't use them have a shut off at the end of each hose because it never release all the refrigerant especially when you dealing with all the refrigerant when doing refrigeration system. Other point is the digital gauge set l read some where it's not good having refrigerant trap when not using you digital gauge .
Hey Edward, we don't trap the refrigerant and keep it in the gauge set until the next call. That is probably what you read. Yeah, I use the ball valves on the end when charging the liquid back into the system from the high side. I just wanted to go over what manual and low loss fittings are for those that are taking the EPA 608 or already did but didn't really know what they were, thanks
AC Service Tech LLC That why l don't like them you have to release the refrigerant don't bleed off .
How many liquid gas in the hose and guage after close valve. If scale use manufacture said 650gram gas but when i use scale in the two hose lines and gauge has a gas. Is we r filling less gas. Need to fill 700 gram gas in it?
Thanks 😘👌👍
This is just what i needed.
Thanks Jamal!
Of course I'm watching this video the day that I got a 2nd degree burn in both hands!
C&D Valve CD2070 Large Thumb Screw Core Depressor with Back Seat... So I bought this, but it doesn't work, the refrigerant started to spray out the thumb screw after the first turn. I tried to back off the screw but it kept leaking so i took it off completely. Can you make a more detailed video on this one tool? or the adjustments of it?
Thank you Craig , you always have great video and everytime I learn something new. is ((C&D Valve CD2070 Large Thumb Screw Core Depressor with Back Seat )) fit with hose of R410a, Thank you
Which fittings do you prefer personally? I am New to the field and the last thing I want is to waste refrigerant while servicing. Purchased your book btw excellent material. thanks for making such great content
Thanks so much. I buy the hoses with the manual valve on the end but if you have standard hoses, you could buy just the end fittings. I like the manual valves on the end and I also like the valve core depressing ones, but only the version that has a back seat that can lock refrigerant in the hose, thanks!
Another great video! I learn something new every time! Do you have any content on compressor change outs? If not, I would love to see one in the future.
I don't have any on one yet, thanks G Meier!
Perfect just what I was looking for!
Great to hear!
Wow I’m changing all my grommets now
How many liquid gas in the hose and guage after close valve. If scale use manufacture said 650gram gas but when i use scale in the two hose lines and gauge has a gas. Is we r filling less gas. Need to fill 700 gram gas in it?
Thanks for the excellent videos! What is backseat? Does it mean close the valve?
I understood that regular charging hoses have a purposo for connections such as recovery and evacuation but why do so many companies bother including them with manifolds. Seems like it would just result in a lot of loss
What do you do with the refrigerant in the hose and gauge set when you only have one service port, e.g., a mini split?
Could you please make a video on how to wire a peanut relay from start to finish from 240 volts to relay to airhandler if you don't have sequencer Or how to use contactors instead of sequencers.
Bronchee Mims, thanks for letting me know what you would like to see!
How many liquid gas in the hose and guage after close valve. If scale use manufacture said 650gram gas but when i use scale in the two hose lines and gauge has a gas. Is we r filling less gas. Need to fill 700 gram gas in it?
at 4:45 you talk about weighing refrigerant back into the system and refer to other videos. I'm assuming your talking about putting the refrigerant that vented to the gauge set and hoses back into the system. I'm at a loss, I looked around and don't see that explained in other videos. can you point me to one of the videos that explain that. BTW, I have got so much good information for you that I just purchased your Paperback, Workbook, and Card Combo.
Did you use the same gauge set for each fitting? I saw the pressure go back down to zero right before the new fitting was attached. If so, that's some good editing.
Yes I used the same gauge set for each, thanks John!
The thumb screw valve core depressor with backseat links doesn't seem to be working for me
I have question to you about weighting the high side refrigerate back into the system. Which is something I have always done, I recently saw were someone said on a critical charged unit that would over charge a system. Because what in the system is in the system and what’s in the hose is pretty much extra Freon. What is your take on that theory? It’s a new concept to me, I deal with a lot of critically charged units being a refrigeration tech.
Do you suggest a Thumb Screw Valve Core Depressor with Backseat for both the high and low sides or just the high?
Great information. Thank you 😀😀😀
Thanks Richard!
Excellent video 👍🏼 Thanks!
how much refrigerant does a regular set of hoses hold?
since in refrigeration the right charge its very important I always wondered that
In reference to refrigeration, we purge the air to the end of the hose where the manual valve is, then we zero the scale out prior to weighing in the full amount of refrigerant in as stated on the rating plate. The weight would depend on if its vapor, sat, or liquid and the length of the hose. I have tube size and refrigerant weights at the website in the articles section, thanks!
Do you need three of these connectors (two if not adding refrigerant) for the blue and yellow hoses?
Hello, trying to find the manual low loss fitting and can’t seem to find it in the links. The one that is no rush to connect.
quick question; can i use a schrader valve removal tool ( the ones with extra 1/4" access on the side ) instead, so i won't have to buy both removal tool and a low loss fitting? do you think they would hold a deep vac? thanks
Hey mina mina, yes the valve core removal tools will hold a deep vacuum but I try to keep low loss fittings off my vacuum setup. Have you seen "acservicetech full vacuum procedure"? I wouldn't go pulling valve cores out each time you are connecting to a system to read a charge. You should get the manual low loss fittings. I don't think they are that much but well worth it. I have them linked at amazon.com/shop/acservicetech thanks!
I see you mainly use the same guages in each video. What is the benefit to having guages with the 2 extra middle hand valves? Getting ready to purchase guages off your list and not sure if I should get the Yellow Jacket 2 handle with hoses and ball valves or the Yellow Jacket 4 handle with hoses and ball valves.
The 4 port 4 handle gauges are primarily for those who like to pull vacuums through their gauge sets. I like to keep my vacuums separate for less chance of a leak, less restrictions, and faster vacuums, thanks James!
@@acservicetechchannel How many liquid gas in the hose and guage after close valve. If scale use manufacture said 650gram gas but when i use scale in the two hose lines and gauge has a gas. Is we r filling less gas. Need to fill 750 gram gas in it?
Whats your feeling about using same hoses and gauges on different refrigerants? Also smart probes?
You would blow the hoses out with some nitrogen but basically you are trying to avoid mixing oils in the hoses. Probes helps and somewhat avoid that problem, thanks!
AC Service Tech LLC thank u!
So I noticed you only screwed them on finger tight. Would there be a problem if you used a pair of pliers to screw on the hose really tight. Does that prevent leaks or are you just wearing out gaskets and parts?
You would be wearing out and possibly tearing the rubber gaskets with pliers, thanks!
How many liquid gas in the hose and guage after close valve. If scale use manufacture said 650gram gas but when i use scale in the two hose lines and gauge has a gas. Is we r filling less gas. Need to fill 700 gram gas in it?
@@vineetsehgal4738 considering the gauge manifold accuracy and temperature sensor 50 grams of tolerance is acceptable as it wont make any drastic change,but you made a point hoses hold the small amount of charge in it
When connecting low loss fittings, do you have to remove anything from the hose connector.?
I have a question that no one has been able to answer yet. If you have the compact ball valve and you hook up to a service port how do you bleed the air out between the ball valve and the actual service port if there is still freon in the hoses.
Joey look up acservicetech connect check the charge, disconnect procedure, you just use the systems pressure to purge that leftover amount of refrigerant before connecting to a closed refrigerant bottle, thanks!
AC Service Tech LLC so if there is freon in the hoses and air being introduced in the hoses at the service port the air will migrate through the freon to the gauge set to be able to be purged out?
Did the red hose you attached the sample LL adapters to, have a schrader valve or was it removed?
It did have a valve core depressor inside the end of the hose but if you are using it on a permanent basis, it could be removed. Also, you wouldn't use these LL fittings for recovery or vacuuming as you would use hoses without a valve core depressor and use valve core removal tools, thanks ejcsds!
My guy connected the yellow jacket manifold directly and disappeared. I’m not sure how I could disconnect this safely.
Do you remove your hose gasket when you add low loss fitting to normal charging hose? Thanks
You'll have to keep the hose gasket, otherwise you'll get a leak where your low loss meets the hose
So, which one looses less?
Service valves
How many liquid gas in the hose and guage after close valve.
possibly 6 times more refrigerant in the liquid line than the vapor line, thanks
Do you use different gauge sets for every refrigerant?......
I try to use one for r-22 and one for r-410A but nowadays it gets hard because there are systems with nu-22, M099, and R407c too, thanks
AC Service Tech LLC yea. That’s what I was going to say. You must have like ten sets of gauges in your truck.
that would be ideal @ Oscarbm1234, but then you could move contaminates around from system to system >_>
How many liquid gas in the hose and guage after close valve. If scale use manufacture said 650gram gas but when i use scale in the two hose lines and gauge has a gas. Is we r filling less gas. Need to fill 750 gram gas in it?
What brand is best when it come to fittings and hoses?
low loss "fartings" is more a correct term, good for low flow testing, but poor for recovery, vacuuming, charging. this is more or less a work around to the silly ports/ hose ends R134A has had for years ;)
and it still fails..... ports leak tons of gas per year
Hey Throttle Bottle, I use the manual valve type all the time for charging but they are built onto my hoses. None of those should be used for vacuuming or recovery. I just wanted to go over what a low loss fitting is and how to use them for those students learning the term "low loss fittings" manual or automatic during their EPA Test Prep, thanks
I get that, but low loss = lazy tech excuses 101..... then again, I recall others venting multiple pounds of R22 and worse into the 90's :))
Hey Throttle Bottle, we all use low loss fittings. At the very least one on the red side. It wouldn't make any sense not to unless a tech was only working on 3 position valves. I use them on all three because they allow me to be able to valve off and control things better with the ball valves, thanks
How many liquid gas in the hose and guage after close valve. If scale use manufacture said 650gram gas but when i use scale in the two hose lines and gauge has a gas. Is we r filling less gas. Need to fill 700 gram gas in it?