How to do a Pump Down on an Air Conditioner ( HVAC )
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- Опубликовано: 11 июн 2024
- How to do a pump down on an air conditioner ( HVAC ). In this video I explain what a pump down is and how it works, along with pumping down an AC unit using the steps I explained. This should only be done by HVAC technicians and microchannel condenser coils should never be put into a pump down because that can cause them to leak. Manufacturers of r410A ac condenser units also don't recommend putting those air conditioner systems into a pump down either since that refrigerant has higher pressures and a pump down can lead to leaks.
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Another good video with clear instructions. THANK YOU
Please make more AC videos. I’m a new tech. Been doing it for about 5 months and your videos helped me a lot. Thank you
Your videos are so invaluable to me as an HVAC apprentice and help me get a leg up on things. Thank you so much for posting these.
This is going to be my duties for the summer as a new installer thank you for this video
Another quality video J. Love your channel man.
Thank you! Glad you liked the video!
Thanks for making this video, I love your channel!
You should be a teacher ,the best videos ever ,thank you
Your videos are so helpful thanks
Great great video buddy keep them coming cause I’m always looking for more of them 👍👍
Thank you T&T! Glad you are liking the videos! I am running out of my pre-filmed Minnesota videos though... All I have here in Hawaii right now is ceiling fans lol so my HVAC content may decrease for a while until I can buy a house here.
Word of Advice TV I hope they have hvac work in Hawaii lol
Tks for your shsring the knowledge. God bless you my friend.
Exelent video, thank u, it was well explained, very helpful
Very nice information great job
Always you do great video
Another awesome video. Any differences when pimping down mini splits. ?
Great job 🎉
Great video! Thank you
Glad you liked it! Thanks for watching and commenting!
Aloha to you and the best camerawoman ever ... Lol ... Great vid as usual ...
Lol, thank you Eddy! Your presence is appreciated... As usual ;)
You great teacher.
You are awesome ! Teach very good everything tank you Jay for taking time to teach us some of your knoledge we need people like you God bless you and all your family
Very Imformative.
very good video
You are the best
Poor frog excellent video
Nice man!!
Cool video.
That frog 🐸 looked really crispy 😜
Thank you!
Haha I know right? I think that's what one would call a "weathered frog"
Thanks
Nice video
Great vid! Any comment on pumping down units with longer linesets? Ex: a 50' lineset that's charged to spec (~.6 oz/ft for 3/8" liquid) x (50' - 15' (factory charge)) = 21 oz additional refrigerant
great video! would this be an advisable way of not losing refrigerant if i'm replacing my compressor?
Hi Jay. Did you move yet. Hey I had a problem with my furnace. Everything pointed to the pressure valve for the inducer pump but when I tested it as you suggested, it tested ok. I checked all lines and they were clear. Long story short, I believe my problem was debris in the gas valve pressure sensor. It piggybacks on the gas line similiar to a water pressure sensor on a hot tub. I removed it and then purged the gas line and blew into the stem that screwed into the T of the gas line. Do you or can u do a video on how to test it. I think you can just jumper it but hoped to get the info from you. Thanks. all your videos have helped me troubleshoot and locate that I think Ive fixed the problem. It was intermittent which didnt help. since I remived and purged it the durnace hs not failed to start. thanks again
Thank you for taking the time as usual in all your videos. Great explanation with many many important tips. It’s ok to do the method that you explained for 410 and for R22 as well? What’s your opinion? Thanks again
DO NOT PUMP DOWN A 410
I have pumped down 410a they don't recommend it because of pressure.
Thanks for your videos my friend I have cuestión are you supost to Instal Dryer filter in low and high side in a unit with 410a refrigerant? Thanks
Wonderful video! When we shut off the valve at the discharge line while keeping the valve at the suction line open, would also the pressure at the discharge line become zero? And after closing both valves for pump down operation, what would be the pressure at the condenser?
Great Video. Have a nice weekend. Thank you for sharing ^_^
Good to have you here ZE KENZY! Thank you for being a regular on my channel! :)
Hello buddy ✌️ how are you doing my friend 🙏.I hope and pray 🙏 all is well with you and your family Jay. good to see you again my friend all is well here so far Bigfoot is doing really good and Arnold is too and I'm doing okay... have a wonderful blessed day my friend always praying for you all and remembering you all in prayer god bless you and your family my friend 🙏... remember me as you eat the Star fruit.lol...it sure looks exotic..
Hi David! Good to know that all is well on your side of the world! :) You almost make it sound like Arnold and Bigfoot are doing better than you? I hope you are staying healthy as well! We just plucked some starfruit today actually, I bet some stores in your area have them too. I know Cub Foods in Minnesota used to have them.
Service value repair kit could help with leaks. Service 410 offer products.
My old AC system is flat and it has leak(small or big hole don't know, and water got in the pipe perhaps) in AC line under slab we believe base on last AC guy detection. I like to use seal repair spray like leak freeze on my old system to see if I can make it last a little longer. What are correct steps involved in refilling it up with 407c(cheaper than r22) - vacuum (take out water and moisture), refill with freon, and then apply sealing chemical ? Many AC guys charge a lot like 500-600 to attempt to seal which is too much for me.
How did I miss this?? I’m the one who asked for this 😂😂
I like your teaching because you use layman terms and explain slowly compared to the other guys who talked so much jargons that lost me.
Hi
thanks for the video
I have a R410 VRF (4 units) Inverter AC
Is a pressure gauge absolutely necessary?
[this a one time job]
When you say to take off one of the low voltage wires and when pumping condenser down was that wire the 24 V or the Common or which one did you leave on the contactor? Thanks
Can you pump down a R23 minisplit systeem or a multi split system.Thx.
One time I saw a chap not use any gauges but only run it for a much longer time of about 5 minutes. I guess the compressor could handle it like u say for recipro version. After relocation of unit it worked.
I'm a fan of LeakLock. A lot of leaks are just at service valves and ports. On my condenser at my house I seal the caps
Good to know I am not alone :)
Same! On every machine,
It almost certainly reduces leaks and "jobs". But happy customers = more customers
At 7:50 "I start closing this first". That's the valve of the gas (big) pipe. You tell the important part later on: close only halfway in!
Question: Setting "heat" at 62 degree, would it be a problem?
After pump down with compressor, what is the process for recovering the remaining refrigerant? Attach yellow line from gauges to recovery machine, line from recovery machine to a recovery tank, then open necessary valves leading to the tank?
When someone pushes in a contactor to do this, is that because the low or high limit switch is still active? The workaround is bypass the limits and run the unit from stat/outdoor switch?
Nice one😂😂
Great my frind you should become a teacher
Thank you Juan!
Your videos have help me in the field and I became a stronger tech I love youre videos keep the motivation going 💪
Awesome! I love hearing that. With you continuing to self-educate, I am sure you will turn into a HVAC legend in your area! Good luck with the career!
@@WordofAdviceTV love ur videos was wondering have you done one on recharging
A great video that I learn a good knowledge from you and make my career progress. Keep motivation for those who want to be Hvac man. Thank you so much
Word of advice: "whatever refrigerant is left, jus recover with recovery machine"
Me: 😂
😂😂
Heheh :)
hand me my 10k
Thank you for your video enjoy your new home
Thank you Jozef!! We are renting right now but are on the lookout for a new house :)
@@WordofAdviceTV That's awesome I do hope you find a home for a very good price I know Hawaii is expensive I wish you and your family all the best of blessings.
Thank you good sir! Once there is some progress over here, we will post another Hawaii update video :)
Need your advice: Can you do a video about the Merv rating on AC filters, I was using a pleated filtrete 800 or 1000 on a three ton ac and gas unit, now I am not sure what merv rating i need. Thanks
Hey Ron! The lower the MERV, the better. I would go with 300 or 500 personally.
Here is a video on the topic: ruclips.net/video/GoOKjINPgpY/видео.html
My question is, is the system in the attic hace to be turn on while doing it or just the condenser and the system in the attic have to be off
Great Channel! So I took the plunge and decided to replace my 35yr old Sears AC.
I bought a Brand name Unit and but, can't seem to find ANY HVAC outfit to help me install it. They all decline to work on the project for me. It feels like conspiracy out there. How and where could I get referal?
ive never heard of anyone having issues pumping down 410 units, the condensers come from factory with a full charge so im sure they will be fine provided the system didnt have a ton of extra refrigerant added. watch your gauges and go at your own discretion i suppose
Thank you for pointing that out. I have pumped down quite a few 410a units as well and have never had any issues... But it is not recommended so I thought I should say that.
R410 and R32 units often the instruction warn against a pump down to protect the scroll compressor. However we did that numerous times without problem. That is stopping at zero pressure. I think it is fine
I picked up an old R22 unit that was advertised as having about 4 lbs of Freon in it. The guy said the person pumped the system down into the outside condenser unit. The liquid and suction lines were cut and then pinched off, and the service valves were both closed. When I open the liquid side service valve, I can see it is under pressure. But when I open the suction side service valve and hook up a gauge, it reads zero. I even pulled the shrader out to make sure it was not blocked. Is this normal? I would think the pressures on high and low side would be equal? I wanted to pull the freon out to donate the unit to an HVAC school, but I'm confused as to what's going on. Thanks in advance for any advice.
My a/c is not blowing cold air all of a sudden. My a/c is showing a little less than 150 PSI on the low pressure and about the same on the high pressure. Does it need more r22 or do I need to lower the pressure??
Pumping down a unit is nothing new, but handy sometimes. Time is money!
Amen! :)
I think I missed a step. I thought you closed the high side off at the King valve first and left it that way, then closed the suction side frim about 1/2 open?
With a HP I would imagine you can store even more in the tank near compressor. Do king valves leak when old, and when fully seated, or is that rare?
Yes they can leak a little. And if disconnecting the lines for any length of time it's best to "braze off" to be sure of not losing any gas
explain your comment heat pump " With a HP I would imagine you can store even more in the tank near compressor". The recovery tank should recover 80% of its capacity by refrigerant weight.
@@proanswers Meant to say accumulator on HPs would hold plus condenser.
I stopped short in the process one time when I heard the change in sound of the compressor. I turned off the ac but forgot to seat the low side valve. I abondoned the pump down and expected the gas to seep back around the line with both seats open. But ac wouldn't start up again after that. What would have been the problem?
Low pressure switch, not enough refrigerant in system
Can you please tell me why 2 or 3 seconds into the pump down the compressor keeps turning off and pressures rises?. There are no low and high pressure sensors at all. Thanks
Same for Multisplit R32?
Hi , Thank you for your helpful videos. Have a question:
I have a AC unit :
American Standard
Allegiance 13
MFR DATE 2/2006
Mod. No. 2A7A3024A1000Aa
Serial no 6055NE65F
Can I pump down refrigerant in this unit ??
Thank you.
Is there a way to contact you, without the comments section? I have a question that I believe you can answer.
Do you not pull a vacum on the system where it was open?
What happens if you pump down while having extra refrigerant added because of extra long lines?
difference between vacuum and Pump Down on an Air Conditioner ( HVAC ) thanks
Can I do a pressure test with nitrogen after I do a pump down?
First question to ask is do you trust the quality of refrigerant in system? If you do not know the history of unit it is better to use new refrigerant after your repair. Even with the new refrigerant expense, it is cheaper than a call back and more issues.
Can we have a video of by passing wires
Why do you only connect the low side gauge on you service hoses?? You said some people connect the low and high sides but you only connect the low?? Why is that?? My teacher taught us to connect both so I was wondering why you do it like this?? Thanks!!
The reason he only connects the low side is because he is not charging, or checking the charge he is only doing a pump down. He is only concerned about getting the gas out of the line and into the compressor.
By EPA: For high- or very high-pressure appliances, the equipment must be evacuated to 0 psig before it is opened.
The problem with pumping it down to zero is if you get it to -1 or more you will then have a vacuum in the line which will draw air into the sytem when a line is opened and you do not want that.
Nice video! So you need recover the refrigerant regardless using pump down or not. Would be more effective just to recover the entire refrigerant from the beginning weighing it and sparing the compressor? Or is it just faster to use pump down? Thanks again!
It’s faster to use a pump down method because the compressor in the AC unit in much stronger so it’ll be a much faster process to pump most of it using that compressor.
Have seen many HVAC vids, but somehow this process seems to have fallen through the cracks.
Thank you.
Hey Jay,
Does it matter which place you go to get certifications?
Already have universal.
Wanna get other certificates -for example R-410A
Go through ESCO Group or Mainstream or does it matter ??
Thanks for your info and videos! 🤙🏻
Honestly, as long as you get the paper/card, I don't think it matters where you get it. I got mine from AC&R Safety Coalition
Should we use gloves when working closely with refrigerant ? Thanks
Yes. It could give you frostbite if not careful.
Hey Jay, have you thought about starting an hvac business , being a contractor? Hawaii should do good ehh
You definetly got the skills.
Thank you Daniel! I have entertained the idea before but decided against it for now. I know quite a few HVAC business owners/ex-owners and have learned about owning your own business from them.. I would effectively be resigning myself to 7 day work weeks and a lot of headaches for the first couple years. At present, I am not willing to do that.
@@WordofAdviceTV your causing me to rethink twice 😂 It Would be nice ofcourse to be able to hire a dispatcher/someone with accountant skills of the bat. Who can take and schedule calls/ send invoices/ billing/ re stocking / ordering. so we don't have 3 jobs and our tasks/stress becomes reduced. Marriage partner? Although I've heard it's not a good idea! 😇
@Daniel L Haha yep.. All the things you listed and many more are the cause of those headaches.. HVAC business is always a good business if one puts enough effort into it but since I have an idea of how much effort it really is, I am not as enthused about jumping in.. But some people love that, they enjoy being immersed in work. I have a 32 year old friend who opened his own remodeling business and it is successful. His hair is turning grey. Lol, I just don't think having my own business is worth a few years of my lifespan. I would rather focus on other opportunities. But like a grandma used to say to me: "different strokes for different folks". ;)
@@WordofAdviceTV damn! Stop it! 😱
I already invested 10k with van, tools, website. Logo/stickers/books/invoices/magnets/apps/ registered my business/ got my ccb test/ etc. I have the mentality that if its possible for others its possible for me. Most people don't use a flat rate pricing method. They don't have a equipment book. They don't know the difference between overhead as a percentage so they calculate gross profit as 100% profit and don't charge enough. They don't know their divisor percentage, they don't know what net profit is and if they do, they better know the percentage where it needs to be at every job, every month. They better get their profit and loss statements monthly. This is the reason why 85% business fail in 5 years. Hvac millionaire is great on the business side of hvac. You are absolutely right jay, I've known a guy who owned a business for 15 years. I worked for him. He left to Mexico for 3 months and left me to take over lol. There was no pricebook! No equipment book! The van wasn't stocked I had to make a 1.5 hr trip there and back for copper fittings and other $4 parts! Ofvourse when he got back he said it took you this long to do a particular task! And he didn't pay me a total of $1,200. Thats what he is missing out on and more. I cant believe how he remains in business. I had to do all his call backs of which the customer didn't want to pay the second time around and guess what he didn't want to pay me. I guess I had to do his call backs for free ! I think if this man survived like this for so long, I can as well. And with the right principles/knowledge make it alot easier for myself. Although customer service is going to require humility! That's for sure!
I love the plan Daniel!! You are not just jumping in blindly. I very much agree with the idea of being educated in business, sales, marketing, cataloging, advertising, and other spheres aside from just HVAC knowledge. That will give you a tremendous advantage over companies like the one you worked for... Just from what you described, I am confident you will do great for yourself as long as you persist. If you are invested into this already and there are no colossal reasons to change course, I would continue to give 100% effort into this venture and it will surely succeed. I also know a few guys that opened their own HVAC companies and they LOVE it! But they definitely did their homework in how to successfully run a business before going off on their own. Being brilliant in HVAC of course does not mean one is brilliant in business. Anyway, good luck man!!! Keep improving and adjusting to the times and you will be an HVAC legend! ;)
👏👏👏
3:00 wait, isn’t it the liquid line? correct me if I’m wrong please, I’m a new tech
Yes, you are right. I said it wrong there. The discharge line is the one that comes out of the compressor and into the condenser coil. The liquid line comes after the condenser coil. My apologies for the mistake.
@@WordofAdviceTV Thank you very much!!! Your videos are very helpful
Good technical advice but he doesn't wear safety glasses or gloves. PPE is par the course in Australia!
Hbhki8
Can I fix a leak hole on the Freon tubes of mini split AC with shark bite ?
Another Execelent video and have a good day. 😃
👍👍👍
Harry you are a man of legend.
Can't you just hold in the contactor and then close off the suction, then let go of the contactor? Instead jumping out wires.
Wonder how many people did this using a scroll compressor....
On a scroll compressor,i would not pump down any further than 5 to 10 lbs.
When the disconnect is tricky recommend pushing the contactor in manually to get your timing nice, and it is possible to pulse it when it's just above zero.
Or even stop at zero it will "bounce" up a few pounds.
Recovery machine on the last 5 psi?? That's not enough to even prime the recovery pump, I think it's "loss minimus"
Thank you for the further suggestions Nathan! Much appreciated! :)
"I think its loss minumis" Try saying that on camera Nathan! 😂
Daniel L. maybe it's arguable 😁but it's a lot less gas than releasing a liquid filled gauge hose
@@Froggability i agree with you 👍 100 % jay is just protecting his behind lol
talk 2 me like im 5 yrs old because just starting i this field
You can't pump down 410 what can you pump down
Thanks