Returning To The System With High Head Pressures to Replace Liquid Line!
Vložit
- čas přidán 13. 09. 2024
- In this video I return to the house with high head pressures in heat to replace the liquid line. #airconditioner #hvactechnician #hvaclife #hvacguy #hvac #acrepair #hvacinstall #hvactech #heatpump #furnace #lineset @ruud @MilwaukeeTool @FieldpieceProducts @VetoProPacToolBags @KleinToolsVideo
Thrive Marketing: thrivehvac.com...
Merch Store : hvac-guy-2.cre...
HVAC LIFE FB Group: / 521086622906115
Here are links to the tools I use, And it costs you nothing extra to buy from this list:
Decked Storage System: amzn.to/3CPVeyq
Yellow Jacket 60278 Flaring Tool: amzn.to/3FPjlyY
Veto Pro Pac Tech MCT Blackout: Amzn.to/3iCieJK
DeWalt work table: amzn.to/3fKChoB
Inficon D-tek Stratus: amzn.to/3zNg7IO
3 Amp Lil’ Popper: amzn.to/3D5lt3e
Inficon D-Tek Stratus: amzn.to/3RvnXOl
Fielpiece SC680 Clamp Meter: amzn.to/33rhxvE
Fieldpiece SC480 Clamp Meter: amzn.to/33kfgCB
Fieldpiece SMAN 480 Digital Manifold: amzn.to/3twfVvA
Fildpiece SVG3 Vacuum Gauge: amzn.to/3udursu
Fieldpiece DR58 Leak Detector: amzn.to/3nt1TXw
Fieldpiece JL3KM2 Bluetooth Manometer set: amzn.to/3blMrJR
Fieldpiece Blutooth Scale: amzn.to/3Gzveab
Fieldpiece SDMN6 Manometer: amzn.to/3qwk9RP
Fieldpiece MR45 Recovery Machine: amzn.to/3cUFX5h
Fieldpiece 8CFM VP87 Vacuum Pump: amzn.to/3qC2wA2
Yellow Jacket Tubing Expander: amzn.to/3sjuK3a
Milwaukee M12 Impact Driver: amzn.to/37xXkqk
Makita XDT16: amzn.to/3riXuaJ
Makita 18V Light: amzn.to/3Fw4GW4
Makita Wet/Dry Vacuum : amzn.to/3tw4dAL
Makita 18V Battery Mounts in Van : amzn.to/3GxpVID
Makita Jobsite Radio: amzn.to/3HuVp2u
DIY Vacuum Attachment for drains: amzn.to/3tDpfNU
Fieldpiece Smart Probe Kit : amzn.to/34NG3HL
Klein Heavy Duty Wire Strippers : amzn.to/3I8YNzT
Klein Needle Nose Crimpers/Stippers: amzn.to/3fuwXlw
Klein Knee Pad: amzn.to/3cy6FB0
Klein 7in1 Flip Socket: amzn.to/3bpabwG
Klein Journeyman Pliers: amzn.to/3tvB60w
Milwaukee Slim Packout On My Torch: amzn.to/3KeLm3j
Aluminum Packout Wall Mount on torches : amzn.to/3Kf9hQg
Milwaukee Tool Box: amzn.to/322iyK9
Veto Pro Pac Tech MCT: amzn.to/3nwwQdA
Milwaukee Hook Blade Knife: amzn.to/33F3m5T
Testo 300 flue gas analyzer: amzn.to/3IcS3Bd
Western Nitrogen Regulator: amzn.to/3rmdKrx
Klein Canvas Bucket: amzn.to/3FyzKVf
Flag Velcro Patch Kit: amzn.to/3K8Eswx
Supco Magnetic Door Switch Holder: amzn.to/34IcXcL
Milwaukee Magnetic Light: amzn.to/3FulCfF
Milwaukee Rechargeable Headlamp: amzn.to/3nuXsvf
SS2 Float Switch: amzn.to/3K7LJMW
3-Amp Breaker: amzn.to/3nxaSXJ
Appion Valve Core Removal Tool: amzn.to/33CFArw
Appion G5 Twin Recovery Machine: amzn.to/33Dvd6C
Yellow Jacket Large Tubing Bender: amzn.to/3qwJv1U
Similar Small Tubing Bender: amzn.to/3fJsziJ
Fluke Twist Guard Test Leads: amzn.to/3216R6j
Fluke 975 Air Meter: amzn.to/3GwD9oM
Honeywell T-4, 2-Heat, 1-Cool Programmable Thermostat: amzn.to/3qtIuaX
Kidde Carbon Monoxide Alarm: amzn.to/3qtIIyP
SolderWeld Flame Resistant Magnetic Blanket: amzn.to/3qtJ4Wb
Malco 1/4 - 5/16 flip bit : amzn.to/3nr67yU
Quick Check Acid Test: amzn.to/3GA2XAy
Wiha Torqe Screwdriver : amzn.to/3u1swH6
Wiha Torqe Screwdriver 1/4” adapter: amzn.to/3IH22Pw
Compressor Tote: amzn.to/3H8xHst
Inspection Mirror: amzn.to/3r9PERV
Wiha TorqueVario-S 10-50 in/lb Torque Screwdriver : amzn.to/3GbKAku
1/4” adapter for Wiha Torque Screwdriver : amzn.to/3u8g0pq
Sweet looking White Van, Curtis. GOD knows you’re a Hard Worker and Don’t Stop until the Job is Completed and the Customer is Satisfied. Thanks! 👍🙏
So glad I am done with that work almost 20 years in the industry doing this daily and I’m done !!! Thank you lord!!
Well if you made 6 figure + income like Curtis doe's it much nicer. Than working for the man.
Thank GOD for Repairmen like you that definitely know what they’re doing. 👍 Unfortunately there aren’t enough young people getting into a number of Trades.🙏
Man I agree, these young folks don't want to work (there are exceptions). They have a Ruud awakening coming.
Yup, for every 5 hvac techs retiring, there are only 2 to replace them.
@@craigbraswell4269 Good Maybe yalls pay will go up and then I'll join the trade.
I hope you get prospective clients from them just watching your HVAC videos which show how much of a great diagnostician and hard worker you are! It's impressive...
I hope so too!
That’s Not Snow in Georgia but instead it’s Ice in Curtis’ (HVAC GUY) World. 😬👍
Good news finally a Van to work from makes it easier on jobs.Good job
Great work curtis
Nicely done Curtis, if only there were more dedicated tradesmen like yourself 👍 All the best with setting up your new van 👍
N2 tank looks great..
Congrats on the new van! Please make a video of your build out!!!
God Bless man. Keep the great videos coming
Oh wow, what a great observation.
That white van will stay nice and cool. Guard your refrigerant supply. A few days ago I heard on the police scanner that thieves broke into somewhere and stole refrigerant!
You would think they would have just run that copper line into the wall, instead of putting it under the slab. That is how mine was done. It goes into the brick, into the attic, and comes down into the hall closet evaporator coil and heat strip resistance money burner heater.
the dryer vent into the garage is super lol. I guess it would heat the garage in cool weather(re-lol). I could see doing that with an electric dryer in colder climates and a drafty garage (if not the humidity would be bad and mold everything/structure)
watching more, I bet the dryer used to vent underground through the green SDR pipe and elbow sticking up behind the condenser! It surely clogged with lint/leaking water in and breaking clothes dryers(blowing thermal fuses and other), so someone's hack fix was dumping it into the garage!
The moisture would not be good
Nothing ever goes right. Good job
Love ur new ride!
You are one hard working dude, reminds me of my father. I’m glad u got ya work van! shes beautiful. Bless God u and yours 💪🏽
Mice dryer exhaust in the garage. Top notch!
I had to pull a 3\8 line from a basement to 2 story and attic on my on Bosch Change out from a train that was 1\4 it went better than I expected I think tape had dried out through years holding the lines together and I had a helper feeding the line from the basement .
That's love the condenser being 10 ft away.
Nice pull!
You had it right the first time thanks be to GOD, not luck!
I always remove my gauges and core before brazing. Plus wrap the valve.
I would of and often do braze the line first then cut in the filter dryer. Great job on that one.
Good video tech
Nice looking van. I bet it will be even better when you get all of your supplies in it.
360, 361; whatever it takes. Couldn’t resist. Nice job!
Wow, that house was assembled by the lowest bidder it looks like! That dryer vent in the garage is unacceptable but not as bad as venting next to a condenser. That will be hard to modify. Great job on the heat pump repair, thanks for the Video!😉
Really well done
like the video. good work. nice van. i see you find your knee pad. i see they got shark bite out for cooper tubing. is your GREE HVAC working good.be bless and safe.we are going to have a polar system coming down so get ready.
looks like the way folks here do it... change an old R-22 system out and put in a R-410 and try to use Old Line Set...
Excellent job Curtis. Would love to be out there working, but due to health issues had to retire. Really enjoy watching your videos.
Like always doing an excellent job Mr Curtis and have a good day. 😃
So glad to see you got a van.
Epic job man very well done!
Did I miss something but how did you pump it down without any gauges hooked up.
His hand is calibrated for temperature and pressure. It’s the new upgrade along with new van.
All that ice on the coil sure helped with the pump down no doubt. 410 systems usually buck and open the IPR.
I commented earlier about the temperature sensor. I should have added, when forcing defrost.
He said in video that he changed out the defrost board and sensor.
Heat probably didn’t kill the seal, i find those tend to leak just from being used after installation even if you’re not using a torch near them
I suppose they used a Hose Clamp on the Old Copper line for Unknown reasons. 🤔
Watch Steve Lav's vids on restocking his new truck ... He's a one man wreckin' crew ... Good vid , thx for sharing ...
I came across something similar last night at I guess I could call him a friend's house or more like an acquaintance where it was a quarter inch liquid line where somebody had replaced the unit about 20 years ago and instead of pulling the line said they left it the quarter inch and at the ends about a foot before the unit they changed it to 3/8
Looks like refrigerant shot out of liquid line when you first started to close it off so I don't believe you caused the leak from heat I believe it was existing! But great job getting all run and done! 👍👍
For the leak of the service on I don't know if you noticed it when you went to Valve it off for a pump down you could see a little poof of liquid freon spray out more than I could just a bad seal once you open the valve it should seal it and the same goes with the cap unless you price it in to replace it and the freon which is a lot more as you know
Wooowww congrats with the new van! Can you sell me your old one?
Curious why they went under the slab with it when it looks like the lineset could have just wrapped around behind that water treatment and HWT and out the sidewall.
That would have been too easy.
I have soldered electronic components in the past and if you did not want to over heat them you would use an alligator clip as a heat sink. You could have put the valve cap back on or get a large fitting with the same threads as the cap and put that on the valve to draw the heat away. Heat travels just like electricity and the bigger the wire the more current/heat it will carry away. I don't know if that would make a big difference with a torch in such a small distance but it couldn't hurt.
I worked in electronics repair years ago. Now own a hvac company. I use my soldering skills to repair many control boards that develop cracked solder joints. Its very common on certain brands molex plugs. A soldering iron gets to around 700 degrees max. Oxyacetylene brazing can get between 6000 and 7000 degrees.
@@cal3178 copper melts at 1900 degrees. If you are brazing at 6000 degrees it probably won't work. I looked up brazing temps and they say 850 to 1400 degrees. You can also solder the connections like a plumber would if the code allows. He might be able to use a large spring clamp with the rubber removed to help draw the heat from the valve.
Just a note when ever you are pumping down a system always install gauges so you know what pressures you have. And never pump any kind of a compressor into a vacuum. With out gauges you never know if its in a positive or in a vacuum. Im sure that I'm wrong. Just do it the right way.
I noticed that too. I guess his hand is calibrated for temperature and pressure.
@@David-lf2ne This guy is fun to watch
Why wouldn’t you clean the bubbles and cool gel out the valve before you put the cap on with leak lock?
When you sucked down the system you should have your gages connected. That way you can see what you are doing.
Did anyone else notice the double trap in the drain line? Trap under stand and second trap when drain goes under slab and back up outside. Also I may have missed something but how were you able to pump that unit down into the condenser in heat mode?
I see it now, it was a Rheem/Ruud, reversing valve is energized in heating, and you pulled the O wire off the defrost board. This is why I shouldn’t watch these videos at 3 am lol
Not all repairs go nice and smooth
Glad to see you are getting the van back, will be nice and easier to work out of. Do you think once up on a time they had a smaller unit that used a smaller line or was it just incorrect from the start? Reason I ask is my unit is old, so when I do the change out, I may need to run a new line set. It won't be easy on mine. I guess check and see what the new unit calls for and go from there. I just answered my own question. Nice job Curtis.
Should you not jump the temperature sensor?
I was betting the old line was ok even at 5/16
That’s what I’m thinking. How old was that system? It’s worked for that long
35:48 failed leaking o-ring, go figure! they either leak with age or once you touch them(turn to close/service) pretty much they're useless except for being new shipping from factory with pre-charge.
I think I would have run the new line exposed
I prob woulda gave up after not pulling and just ran it through the wall and to the unit
Hey Curtis this is a very odd question I should already know but how exactly do u pump down a condensor unit well ac
Service valves on condenser. Front or back seat them to open/close
Close your high side service valve by front seating it and keep your low side open. Run the system in cooling (aka just press the contactor down). You usually want to monitor the low side pressure but in this video's case the condenser is frozen so there is low to no risk of over heating the compressor windings. You wait for the Low side to get just under 0 psig, you want to lose as little refrigerant as possible. Remember the compressor needs refrigerant to cool it down so don't run it forever in this vacuumed state. Then you can close the low side service valve and you now have a condenser pump down.
@@jrtakesthesky27 thanku !!
Gotta say 99% of techs, especially working alone, would have just drilled thru the wall vs pulling under the slab 🤷♂️
Congrats on the new van. Did the insurance company total your van?
No, but they are paying for repairs.
I always wondered why those access caps don't have some sort of seal in them.
Its supposed to cut into the valve seat.
Sometimes they have a rubber gasket in them, I've seen gaskets on certain goodman/Amana outdoor units.
What’s the charge for the replacement of the 1/4 “ liquid line , I’m very interested in how much you charge for such a difficult job!!! 😱
Hello sir .. How are You
Thanks for sharing the video. Great work. Question: did you backseat the liquid line before or after the adding the seal lock? thanks again
great job on that one ,do you ream that pipe after you cut it?
When you change the liquid line, you don't need to evacuate the whole system? Where does the freon go?
Pumped into condenser
Great job Curtis. I don't know hardly diddly about HVAC. Finally I just have to ask... what's in that dryer you always replace? Can you open a "pre-enjoyed" old one so we can see whats inside? How do you know when they need replacement?
Anytime system is opened.
Desiccant beads, or block, and fibrous filters on the ends
@@HVACGUY Had a new install and techs didnt install filter drier. I called owner of company and he came out and said it was factory installed and pointed at the compressor muffler.
Choose your hvac company carefully, and the cheapest price isnt always your best option.
But quick question did you tell him to cut the bushes around that unit to give it more air flow as well and did you test the defrost switch thermostat
I believe he replaced it.
👍👍😊😊
I love watching your videos but it kills me when you don't ream those cuts.
I wouldn’t of cut out the liquid line dryer I would’ve un sweated it so that you could use the fitting again on the service valve
Oscillating saw
I wouldn’t pull it out I would blow through it and see if it’s got a restriction with nitrogen if it goes through it super easy leave it
I didn't see the previous video. An undersized liquid line was causing high pressure?
Yes
Yes
In first video the pressure was fine in cool mode but high in heat mode. I would think the pressure would be high in both modes if the liquid line itself was too small
@James FITZSIMMONS Well, I thought about this, and restrictions or small liquid lines won't usually cause high pressure, that's why I asked. But your condenser coil gets smaller in heat mode, so it could affect you more so than in cooling mode.
@@EverythingHVACR that’s one reason some of the early Rheem/ Rudd had charge adjusters in the indoor coils to kinda equal out the charge between heat an cool
I can tell you feel like crap today!
If anyone can turn Chicken Poop into Chicken Soup, it's you. Well done.
No guage on the pull back? Probably more the drier than line size...but probably line size is important as well. Good job
Hole saw and s length of 1 inch pvc?
Ohm out defrost sensor see if its closed while ice is on coil
Hope it's a biflow drier
This unit has suction line drier could it be stopped up?
I think that’s called a charge compensator. That’s not a suction filter - it’s not on true suction.m
Jesus was on ur side on this one
As a reefer tech leak lock is garbage, best bet honestly is monster tape(very little) and nylog. Or just nylog and tighten it down.
I got scared for you when it wouldn't pull outside. Do you ever use wet wrag paste for valves?
where was the knee pad?
This call may be where I left it
Curtis just curious did you check the drier like blowing your mouth through it just to see if it was restricted I know you didn’t have any frost on it but maybe your subcooling was too high at that time to show frost etc
No, i didnt
@@HVACGUY thanks Curtis for getting back to me
Bad defrost sensor
Just curious, what did your head pressure settle out at? By the way, excellent troubleshooting!
Around 310 when I left
@@HVACGUY what is it supposed to be? Ty
@@earlestes8649 All depends on outdoor and indoor temp for pressures
@@EvesterGaming I repair appliances and furnaces and AC except for Freon anything electrical or plumbing. I’m handicapped but I wanted to take classes for it but they told me that with my history they wouldn’t pay for anything but a office job. So I took accounting and passed with b average . But couldn’t see me behind a desk, I love wiring houses and putting in meter bases etc, I’ve fixed my AC and furnace several times over the last 30 years it was installed in 92
Bad sensor for defrost
damn you braze fast , god my weak point is brazing, been working on it but damn all the pro press guys need take note, brazing can be faster
Common liquid line restrictions include clogged filter-driers or metering device restrictions. Many techs think that refrigerant will exit the compressor and back up against the source of the restriction, which would raise the head pressure. However, that’s not true.
Our diagnostic sheet shows that liquid line restrictions cause low suction pressure and normal to low head pressure, not high head pressure. That’s because the compressor requires refrigerant of a specific density to pump refrigerant into the high side of the system; when the suction pressure is low, the compressor can’t move as much pressurized refrigerant to the high side, so a liquid line restriction doesn’t have a huge impact on the head pressure when you have reduced amounts of high-pressure refrigerant in the liquid line in the first place.
Some thought experiments that can help you grapple with that idea include thinking about refrigerant in a tank and the pump down cycle (used to prevent refrigerant migration). Note: don’t pump down a microchannel condenser!
However, when you have a restriction, its location has a significant effect on the head pressure. The amount of charge also matters, as overcharged systems are more likely to have a significant impact on the head pressure (raising it and causing hydrostatic pressure buildup within the system).
The most common liquid line restrictions are clogged filter-driers, metering device inlet screens, a kinked liquid line, or a TXV with an empty bulb. These very rarely cause high head for more than a short period of time.
The most common causes of high head pressure include high load, overcharge, and poor heat rejection (such as from dirty or obstructed condensers).
One response to “Do Line
Is this your own business?
Worked in the business for a lot of years. This is one of the things that aggravated me the worst, poor installation. This unit never had a proper installation or start up done. The customer now has to pay someone to fix the installation that they have already paid for once. My second pet peeve is installation without considering serviceability.
I know you have many young followers that think everything you do is great and I truly hate to be a downer but...OK I'm not going to list the things I would correct after all. Just shaking my head.
How can I even take you serious if you cant even use a pair of channel locks the correct way 🤔
I was telling my hvac class that you are a very smart mechanic, but you do not protect your health, and over time it will kill you.please wear a mask when in dangerous atmospheres and don't breath in refrigerant.
Did you look in manual? Some of those older rheems took 1/4in liquid line….