SMAN 480V refrigerant gages, understanding micron gauge. Deep vacuum.
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- Опубликовано: 19 янв 2021
- Before depressing and connecting your service valves into the vehicles air-conditioning system confirm and prove that your gauges and hoses can pull into a deep vacuum before connecting.
If you do not perform this procedure first you will never know if it’s your gauges hoses fittings or O-rings connected to your gauges that are leaking or is it the automobiles AC system that possibly has a leak.
It does not matter if a technician is given a good tool with a lot of capabilities if he doesn’t understand how the tool actually works.
If the technician does not understand the limitations of the tool.
If the technician does not understand the physics behind vacuum the rate of vacuum decay and gases offgassing out of rubber and moisture or refrigerant trapped deep in refrigerant oil that takes time to burp itself out and slowly release and Ever decreasing intervals.
Hi myself have been bit by passing up this procedure making a mistake and not following my own rules that are not my rules they’re just what is needed to be done to do it right every time.
My lifetime expectancy on a set of hoses on my gauges with the quantity of jobs I do every day on and off constantly moving my gauges around folding them up put them in my vehicle taking them out stretching straightening them out have a life expectancy of about three months before I have to replace my hoses.
When I used to do air conditioning in a shop with my hoses hung up on the wall not being used much not moving much hose is hanging straight not bent I would get about two years out of a set of hoses.
Well you have to take an account many people have use their hoses for 10 years or more.
But they did not use a micron gauge to actually prove they were actually pulling a deep vacuum even though their old analog gauges may have shown 29 inches of mercury vacuum it could possibly been only 27 inches of mercury and vacuum and they never know it because the analog gauges are so inaccurate.
And I have always used a micron gauge on all my jobs since I was 12 years old because that’s the way I was taught from that age on.
Awesome demonstration and explanation. It's basic but that's the overlooked important stuff. Thanks
Without doubt this is the best investment I've made getting one of these manifolds. Everything starts making sense and you see the bigger picture. The wireless accessories are pretty cool too. I've learned more in the last year than the previous 15 years working blind with analogue gauges. Just like the vehicles were working on, the technology moves on, so should your equipment and knowledge.
“Working blind with analog gauges”
That’s a good analogy, I will use that sometimes 👍
I would have to say nowadays working with analog gauges on air conditioning is like working on a new car using a old fashion 12 V headlight as a test light to probe a computer. And the cover of your matchbook to set points gap dwell on a new car in 2020 lol 😂
Just thought any of the young technicians will not know what I’m talking about setting points and dwell lol 🤣
Excellent stuff😊
Always great to watch your videos. Very informative, well explained. Thank you again!
Hope you got a chance to see the latest Jim Bergman video for Accu Tools on The topic of vacuum flow.
Watching. Where did you get the high capacity vacuum hose. My nice pump has that same fitting. It is on the way. Your awesome.
True Tech Tools here’s the link
www.trutechtools.com/product.asp?itemid=7649&gclid=CjwKCAiAxp-ABhALEiwAXm6IyU9LNXqUhYsb8v9yxXTM8MmEqJRxR58tYZf5D7mOPvpGAd541g7xARoCDwYQAvD_BwE
Browse around their website you’ll be amazed at how much air conditioning and vacuum tools and equipment there are
Do u beleive a new booty should emmedietly start learning with this digital gauge or start off with the needle gauges? Thanks for the content, very helpful.
Yes, having somebody to do the math for superheater subcooling most students today barely have a third grade level on a graduate high school.
So if they can’t comprehend, doing superHeat and subcooling on a piece of paper with analog gauges, why waste your time .
I was raised and started on analog age is 46 years ago .
I’d rather learn on the digital gauges I can actually see what is happening and watch the mass the formulas change right in front of my eye simultaneously.
Especially if you were doing residential or commercial on a split system . (not talking in Automotive right now.)
Because the system is always moving the temperatures of changing and running up to the roof, or out to the side of the building to go physically take the temperature of the lines and outdoor temperature at that moment and run back into the building go up the stairs through several rooms to the air handler to take to room temperature and the Supply temperature . And then do your math. What a waste of time..
And by that time the temperature on your refrigerant lines may have changed a few degrees by the time you took your temperature indoors and when you did your mouth, you’re already wrong and off by a few percent .
With analog ages in Bluetooth, it’s instantaneous
So whatever reading is being taken outside, and indoor simultaneously is giving you the actual true number .
It’s like having an automotive Training School . And teaching kids how to crank over the engine and the theory behind a FORD model A
Teach kids nowadays, how to say distributor timing and set points and check the distributor condenser .
Teach kids how to pack wheel bearings on your grandparents 1960s car
Teach kids how to change innertube tires on cars
Imagine wasting all that time in class to teach something that’s not used anymore like rebuilding carburetors
We still have his old dinosaur fogeys bleeding you’re making people stupid where are public school system has already did a good enough job at that it’s not a belief it’s a fact .
On residential or commercial I don’t know if you know that industry but I actually purchased a TrueFlow grid from The Energy Conservatory . What a game changer no more using pedo tubes for taking air flow flow meters and then having to do all the math and the set up and it’s only partially accurate within a few percent.
This thing a TrueFlow grid is extremely accurate and as it’s easy to set up as changing a filter, pull out the filter, pushing the truth located you got your numbers, drill a few holes for test ports .
With analog ages, you cannot read the moisture content, and prove that it has been removed
With analog gauges, you cannot read a extremely small leak under a high pressure nitrogen decay test that loses a few tenths of a psi over a period of a half hour
Because analog gauge needle will not move perceivable to the human eye .
It’s a no-brainer not even a contest .
It’s like comparing a quarter-mile race of the 1973 Pinto against a Tesla Plaid
@@coldfinger459sub0 My son is starting out in this field for residential, I bought him this Fieldpiece SM480v and an analog one as well, along with some of the other items your using and recommended in other videos. Thanks for the tips and great content.
@@jesseruiz2337 some people like seeing analog stick, the needle, mostly old people.
Like my son, he was raised with a half 1 million hours on video games, looking at digital data . In the form of numbers, not analog, moving gauges..
Your son needs to grasp inside his head to see with his minds eye,
Refrigerant, saturation superheat, said cooling, yes to have the ability to see himself as that molecule of refrigerant going through the system and be able to describe the phase change that he’s going through comprehend the velocity of refrigerant mass flow oil, return oil, logging the causes and cures.
And electrical .
He needs to completely read every new service manual and installation guy that comes with every manufactures piece of equipment take it home at night and read it and understand it . And a little Asterix or the number footnotes at the bottom of the page or above the item that tell you goes to the manufacturers website and download the related articles or service bulletins to that piece of equipment.. about extended long line sets
Factory additions of cold Ambien kits that are not included on the unit
He needs to know the reason why and comprehend, for what purpose are they adding these items
Not just be a Parts boy and open up the box and put it on and don’t understand why it’s being added and what will happen if it doesn’t get added .
He needs to understand the finances of a business profit, margins, gross profit, and the difference between net profit and net / net profit .
@@coldfinger459sub0 makes sence to use the digital gauges to see everything in real time at that moment vs being distracted. He is good with money, but for sure will need to understand several aspects of business. Hopefully he stays motivated, I did explain to him that he will need to do alot of reading to understand systems and manufacturer specs to not just be a simple tech, to be willing to pay attention to every detail to master this craft!
I am replacing an evaporator and as per manufacturer specs, I must add 50ml of oil on the system. Thus it mean I should put directly to the evaporator or have to inject it in the suction port after the vacuum?
In the evaporator
I know fieldpiece sells a separate micron gauge, but is there any point in buying that when the sm480 comes with the micron capability?
Excellent observation. Physics behind why a Micron gauge is not good inside refrigerant manifold gauge.
Do you have a vacuum in the key that’s in my current age can you read it just comes from the rubber hoses because they were not meant for deep vacuum.
Then you have the O-rings and the fittings and valves that are all other little possible leak points that may cost you to fail your Micron decay test.
Just the residue oil POE or PAG coating inside of your hoses absorb moisture and the offgassing from the moisture will make you fail the pressure decay test.
The micron should be connected directly to one of the lines by fitting and then have a valve to velvet off separated from the hoses.
So you are only reading the offgassing or leakage inside the system not your hoses gauge manifold assembly.
But it is nice to have it inside the gauges because something is better than nothing but only if you learn how to use it correctly.
@@coldfinger459sub0 I know what we do is run nitrogen through our gauges and hoses, but I have not had the opportunity to use my Fieldpiece manifold gauge yet as I am in training (my trainer uses a analogue manifold gauge). I just thought I would ask because fieldpiece does offer the separate micron gauge(could save money not buying that too) . Much appreciated on your reply for sure.
@@Honeyman76 the BluVac micron gauge is more reliable. You don’t have to buy the expensive BluVac Pro+ it the same gauge just more bells and whistles.
Clamp on temp sensor with your analog gauges so you can learn how to accurately measure super heat and sub cooling
I'm only new in trade (first year post apprenticeship) and thinking to save some money.. Instead of buying separately digital manifold gauge, temp clamps, vacuum gauge, thinking to get one piece of fieldpiece 480v..
What do you think is it worth it?
@@domas4463 worth every nickle in my opinion. Been doing the job now for 16 months and I love the sman 480
See your full name now, 😆 BTW, how is the quality of the fieldpiece digital gauge? It’s not cheap.
Fieldpiece SM480V is the highest quality longest lasting most durable gauge I have ever used. I literally have been trying to break it I always use this one particular one first every day trying to wear it out.
Who makes your vacuum pump?
The big 12 CFM vacuum pump that is rated down to 3 µm is made by NAVAC
The smaller 10 CFM vacuum pump is made by Fieldpiece
12cfm pump on .7cfm hoses...I'm done here
is it ok to use co2 instead of nitrogen? thanks.
CO2 quality is very sketchy in industry supposedly most of it is contaminated with moisture. Because for general use CO2 they do not take out the time and procedures to make sure the filling tanks are moisture free.
There is laboratory grade CO2 and medical grade CO2 that goes through the procedures to make sure it’s moisture free. CO2 is considered generally a dirty gas.
If you have TIG welder or meg welder and you have argon argon is also a clean dry gas that is inert.
@@coldfinger459sub0 thanks for the respond,very much appreciate it,i have the co2 tank as a ATS kit for flowing the gas in to evap pluming or a/c pluming up to 200 pound for a/c and look for co2 leak with a co2 leak detector to pin point the leak.
@@moebassidji8306 oh yea you must be in one of the EU countries or others where they are very strict on using refrigerant for leak testing. I’ve been thinking of doing a video using CO2 of course a good quality make sure it’s dry with my CO2 leak detector to show the method of using CO2 to look for leaks.
I have CO2 used for carbonating water large tanks.
And I have the DeTek Inforcon leak detector Stratus with the CO2 leak detection module
@@coldfinger459sub0 i live in LA and the kit that i mentioned is from AUTOMOTIVE TEST SOLUTION ,I will be greatful to see how you use your co2 tank and your co2 detector.
@@moebassidji8306 i’ll try to do a comparison test. When I find a small leak are use refrigerant first then remove the refrigerant and then stick CO2 in and see if I can detect it with CO2 It was in the affair side-by-side test on the exact same leak on the exact same car
Using a tru blue on 1/4" is doing absolutely nothing...only .7 cfm can be pulled through the 1/4" hoses.....this is like prehistoric hvac
Apparently you’re a literate and don’t know the difference between HVAC and automotive.
They have special schools for children like you I can help you and enroll you.
And apparently you cannot count because it’s two 1/4 inch hoses not one no we will get you a math tutor to count up to two
Unlike automotive service valve fittings that have a tiny quarter inch valve core depressor inside of them restricting the flow
Are the automotive valve core is 5/16 of an inch in diameter on this vehicle times that times to close more than 10 Times the flow then a HVAC residential or commercial quarter inch service valve port
I hear the lips flapping and talk smack but you never read a book in your life on the Automotive side. .
But if you’re watching this many videos then you’re a fan bitch