Single vacuum hose AC recharging method. Micron meter explanation of use 

Thank you. My grandfather and my father were very heavy on education plus hands-on experience not one or the other both in combination learning. With HVAC air-conditioning integrating in with drivability connected directly to the engine functions and air conditioning connected directly into the alternator and air conditioning functions the last decade air conditioning has been specifically dialed in to cool off hybrid and electric cars inverters and battery packs if the owner of the shop cannot keep up with this technology then he should not be allowed to own the shop .PERIOD !!!. I’m 100% on the side of the consumer who is constantly getting ripped off by not having the proper procedures followed servicing their vehicles whether it’s their transmissions their air-conditioning their brakes they’re cooling systems. I’m all for the protection of the consumer and education of Techs

I believe I posted it in pt:2 In the next video ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-pCwoWQa_YCk.html

Yes, I learned and started on analog micron gauge. Most all MVAC can pool under 500 µm I’ve even got most under 100 µm if I leave it on the vacuum pump overnight. Only a few with defective seals cannot achieve the 500 mark but that’s very rare . Some of the Hondas seem to have that shaft seal problem and I remember the old forts with the FX 15 compressors from the 1980s and 1990s had that problem .

If I didn’t have my micron gauge I would feel like I walked outside my house without my pants on. At the age of 12 when my dad started teaching me air conditioning the first thing was a vacuum pump and using a old-fashioned analog micron gauge and sensor. As a child my dad taught me the micron gauge was used on every job I was never taught any shortcuts so I grew up not knowing that other people did not use one. I thought it was normal but when I got older and got out into the real world started working I discovered nobody knew what hey micro gauge was.

A analogy, I like to refer to. Your mother or your child has a cancer tumor in the doctor got tired at the end of the surgery and just felt like he didn’t have to go deeper into the lungs to get that little itty-bitty tiny last piece of cancer because he has a golfing game to go to this afternoon. And the doctor knows this type of cancer from that tiny piece will take 5 to 8 years before it starts growing again to cause damage and your child or mother hast to go through a year chemotherapy and another surgery because he took a shortcut. His operation was successful. The customer got healthy again and healed, but just left a tiny piece of cancer behind to cause destruction later on.. I have some good videos of how much rust and corrosion cutting open components inside receiver, dryers or inside condensers that literally rotted out on the inside and plugged up with rust particles or Aluminum oxidation particles . The technician who did the job before was successful when he was finished the car was cold and the customer was happy and The Mechanic got paid. But that moisture over the few years later, that reacted with the refrigerant, turned into an acid and started attacking all the metal and breaking down the oil. And then the rest particles clogged expansion valve.. and because the expansion valve was getting restricted oil stopped returning to the compressor and less refrigerant so less cooling so the compressor overheated with lack of oil. And then the customers left a few years later, buying a compressor buying a condenser buying a receiver dryer, having the evaporator flushed or replaced, replacing the expansion valve and flushing out or replacing all the hoses in lines because of that quick vacuum job mechanic did a few years ago.

Yes

Receiver dryers should always be replaced. Wanna system is opened up. It also has a filter in it like a filter element in your oil filter. There is a natural absorption of moisture that actually goes through rubber hoses . Different manufactures have stated different life. Five years to seven years. . Hi myself on my personal vehicle . If the dryer was really cheap and really easy to replace, I would just replace it . But if I had one of those stupid vehicles like a couple Subarus out there, I could think of that had a special pressure switch mounted on the receiver dryer and I think Subarus price for that receiver dryer is like something stupid like $300 . I’d leave my vehicle on a vacuum pump for 24 hours . I personally myself just for fun, and to keep measurements and testing. I recharge my vehicle every two years. . Even though it didn’t need it And I would leave it on the vacuum pump overnight every time . Always got well below 100 µm . Couple times I think I hit about 66 µm.. . Because of my service habits, I don’t worry about moisture .

No one way is better just different. A little faster if you do it from both at the same time. I was just showing this method as a example. Because I know some people only have one hose. And a can of refrigerant and vacuum pump. I guess I need to make some more single holes vacuum videos and then hook up a micrometer at the other service fitting

As long as your final (ultimate) vacuum across the system is low enough to remove the contaminates, the lower the better, of course. The larger diameter hoses have more capacity to move the molecules to the vacuum pump and vacuuming from both ends (high/low) of the system speeds the process. If the system is clean/dry/leak free, ultimate vacuum is reached in less time. A system with a real leak might never reach a reasonable level of vacuum and thus you need a good vacuum gauge (micron gauge) to identify this problem and ensure the system is reaching a reasonable ultimate vacuum.

I made a video about using soft copper as lines off your refrigerant gauge manifold. And using soft copper was the way my father was taught when he was young and that’s what he taught me at the age of 12 because we always have soft copper left at the end of a job on installation for free

Thanks, lots of HVAC channels,but you have the market cornered in this area .

@@jenko701 when I started my business 30 years ago from San Francisco to Redwood City I had 30 air conditioning specialty shops as my competition in every city. As a five years ago the last largest air conditioning specialty shop in my city of San Francisco went out of business there is only one left open out of 30. And that one air conditioning shop the old original owner is no longer barely present he has new guys with new management and I started receiving some of his cars coming back to me from shops with contaminated refrigerant. He is doing R1234YF and substituting in one of those eBay mix gases that are actually not allowed to be installed in automobiles because I own a refrigerant analyzer I know that and his customers are complaining about air conditioning not working after they leave his shop. So basically there is now zero competition Occasionally every other year or so some guy decides to become a mobile automotive air-conditioning guy he cuts his price down to half of mine he does get into some of the cheaper shops but when winter comes around usually goes bankrupt and out of business because not enough of his customers call him during the winter months in San Francisco weather long and then the following year I get all his come backs from being improperly recharged or contaminated guess or throwing the wrong parts at it just guessing This is the type of competition I have

All most no oil. Just oil stain. Have you noticed if you drop one drop of oil after a few days or a week or more it spreads out a inch to two inches round?. It takes very little emotional oil at all to make a very big oil stain that looks like a lot of oil.

Many thanks, yeah I guess it makes sense. Every single one of your videos I always learn something new 😊 your channel is absolute gold, have a great Day Tom 👑

@@vw_mods_4711 👍