Bryan demonstrates Schrader Core Removal Mistakes to Avoid. He covers some of the most common errors we see when A/C Techs and installers attempt to remove schrader cores for recovery and vacuum.
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Well done. Thank you.
Can you pull off micron gauge off the side port while vacuum pump is running to pull air into vacuum pump and not get into system ?
All i hear from the experts is never do anything to allow even the tiniest bit of air in any system or it will damage something in the system.. but yet ive had to get trained by guys whove been in the field for 30 years and watch them screw into a frozen unit without wiping anything off or purging. Dirt and all ive seen on the service port and they just screw in their old gauges that been under the seat and an old tank. Then they go to charge it and set the tank upside down on the fan and proceed to fully open all valves and watch their gauges, eventually cut it all off and when they disconnect they always let a plume out thats big enough to be a ninja smoke screen , then they shake their hand that took the freeze shot, rub it on their pants, and most of the time never put the caps back on the service ports and toss the gauges in their bag and go. Me witnessing this and seeing these systems still running years and years later.. hell i watched one guy only replace the coil and blower unit indoors with a r134 newer unit, leave the old r22 condenser and compressor, but just turn it upside down trying to drain what little oil falls out, pull a vacuum on it, fill it with 134 and charge em 7 grand.. but low and behold that crap show is still running 3 years later.. the outdoor unit was over 20 years old.. lol.. and i touch a unit not even hook into it and instantly clog the metering device or filter.. im just saying here ive seen some magical shit just work for these older cats.. crazyness..
How do you Handle when the ports have only a couple of inches clearance before the cabinet gets in the way of the core removal tool and you can’t use them . How would you r&r the cores?
I always use core depressors to attach my micron guage and never have to disconnect it before releasing refrigerant after a vacuum.
They are pretty cheap and an awesome tool to have.
What can happen if you run a vaccum and charge the system but haven't even removed the Schrader core?
Appion is the best, I have 2 of them, I even have the yellow Jacket, but not as reliable as the Appion
Great! Question, So I'm replacing a Schrader valve core on my 2015 Altima 2.5L , there is no freon and I am also going vacuum out the system. I bought the kit from advanced auto I don't have that specials but just like a screw driver type of tool basic and my question is , do install the valve core first then I do vacuum or install the new valve core after I do the vacuum first ? Ty
so when you have the crt's hooked up to the valves like after you did a nitrogen test and you take out the cores is it Normal to feel that air pressure push the knob out on the crt?? like when you have to push in to take the cores out of the valves on the condenser it allows some air pressure to build into the crt I have the navac crt's and one appion crt. I used them recently for the first time w a navac vacuum pump that has the built in micron gauge
Doesn't using 7 fittings increase the chances of leaks while hooked up?
so say it's a new system new lineset and condenser do you open the valve on the condenser and then shut it before inserting the shrader back in so there is more pressure prior to inserting the shrader
Impressive
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Is my core always depressed??? Yes, yes it is. Silent cries. Great vid srs
i usually use 2 core removal tools to isolate the micron gage
What about the new style of Schrader’s that I’m seeing on Carrier units. Are they field repairable or do ya need to replace the entire assembly?
Hi Bryan,
Just for my clarification, before installing the schrader cores at the completion of the evacuation process, you recommended putting a positive charge of vapor into the system. Is it OK to use a small amount of vapor from blended refrigerants such as the R 400’s? My understanding is to always charge from the liquid state when using blended refrigerants. Also, Is a positive charge 5# acceptable or do you recommend a different psig level to bring the system above atmospheric pressure?
Thank you very much, I really enjoy the excellent content that you and your team provides!
That's a lot to take in! 🤔
That's what she said ‼️😂
I do not impress easily, BUT you Sir did a phenomenal job. I am not an HVAC tech, though I did see the original AC unit designed by Dr. Gorrie for medical use, but we in Florida are thankful. I just bought a core removal (Mastercool) system to use on my wife's SUV. I saw your video title, and thought there is never too much information, I watched, and was not disappointed. Best wishes, and many thanks!
Kudos, sir. Very well done. No filler. Perfect video.
I used a defectove adapter for my mini split during the vacuum process which wasn't vacuuming the lines because the Schrader valve wasn't being depressed and then I stupidly released the refrigerant into the system. If i recover the reidgerant and vacuum them will that work, or should i remove the refrigerant and add more.
Simply nice and clear and concise share. 👍💎✌️💪
Thanks for sharing…so the final step (after the system is charged and under positive pressure) when inserting the core BACK into the system, won't a small amount of air from the rear chamber part of the CRT will be introduced into system? Is this a negligible amount and not to be worried about?
What pressure do you recommend when breaking the vacuum, before inserting the core?
thank you for these tips, very good safe information and great recommendations
Is this something a DIYer can do? Is it dangerous? I had a company come out and they quoted me $1294 for two Shrader valves.!!
Great video. Thanks for sharing.
The Appion brand works the best.
Great video. Thank you. So interesting.
Is it safe to put nylog blue on the face of the flare fitting as well as the threads?
I wonder how many schrader are the wrong type, what should the seal material be, neoprene? Seems like the heat damages them all, about every schrader I come across leaks.
Thanks clarified the difference between core removal tool, core depressor tool and just a tee, and how to use the depressor in combination with the removal tool. Good Stuff!
Who thumbs these videos down?? Some old drunk know it all??
Greatly helpful content
L – logic. 👍