Convert Carrier Accurator metering device to TXV
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- Опубликовано: 31 авг 2017
- Someone was asking me if I had a video of me doing this.
I never did get around to making a video of that process but I did find some photos and videos I had made a while back that never made it into a youtube video.
Sadly in this case I needed to change the compressor next because it was already damaged due to massive liquid floodback but it did get fixed. 
Хобби
I've done a few of these on Carriers...Funny thing is Carrier tech support guy at one of the branches told me it would never work.... I told him he was in the wrong trade... I like seeing videos like this...you made it work...not just throw parts at it. Old school knowledge applied... Good Job!
It won't work on a heat pump with check valves without some major reworking however on the gas/straight cool units it isn't hard at all
@Josh Burdette As long as it's not a heat pump it will work
@Josh Burdette Is your unit a heat pump or straight cool?
Of its a heat pump it won't work because the manifold with check valves will repurpose the feeds in heat vs cool.
If you have a heat pump I have another fix that works most of the time
@Josh Burdette I've converted both Carrier and Trane from multi orifice manifold to TXV like a dozen times and the end result was always an improvement over original yet alone just repaired.
@@hackfreehvac what size cap tube are you using?
Awesome awesome awesome video. Thanks for sharing this. Will use it for training my crew!
Awesome thanks
It would be great to have an infrared image of how well your distributor is feeding different parts of the coil 😎🔥👍
Great job. I had thought of doing this on a unit too. Have done it to a small restaurant cooler and had great results with txv
I used to do it a lot to Trane units about 10 to 15 years ago.
Nice work! Thanks for another video.
Looking for the accurator fix and found these. Very good job. Might try the heat and blow trick first
This works on gas or straight cool units.
Heat pumps you are stuck with the accurator assembly.
So the heat and blow is the way to go 👍
Good stuff. Great info. Thanks for sharing.
Scroll, open drive, and semi hermetic compressors rule. Hermetic reciprocating conpressors suck except for reach in fridges/freezers, drinking fountains, and other small refrigeration applications. Scroll compressors can take liquid refrigerant a lot better than reciprocating compressors.
Good stuff sir. more please and thank you
Thanks for awesome technical tips.
Totally awesome brother! Good job! Boy, that would really burn to do all that work and then have a crap compressor you didnt know about :/
that's cool! what kind of torch do you recommend? I only have mapp gas, thank you for sharing.
This is awesome I just bought one from train the other day it was $700 I'll just make one next time
Out of curiosity I see you used a sweat in TXV, when you brazed it in did you just rag the TXV or use some anti-heat gel.
Also I love the work here, that's some professional engineering, unlike some units out there....
What txv/cap tube size would you recommend for a 15ton rtu? I believe its (2) 7.5ton circuits for a data center.
I love your mods because they look the same or better than factory.
High level this job 👏👏👏👏👏
was thinking of doing this to one of the units,do you recall how much time it took you to do all this thanks for sharing trying to put together an estimate
I think you have done a vid converting TXV not too long ago. Very cool fix for that problem.
I thought I did make one before but I didn't find it.
I had these unused clips so I through this together.
hackfreehvac 😸👌
Did you ever cut open the header assembly to see why it was flooding. That's pretty stange. I've replaced several on trane units due to 1 or 2 being restricted. Much easier to get too. Plus it's nice that the kit is already made.
I don't remember. I did this repair over a year ago.
Usually it is a few restrictions as you mentioned. This one was so weird.
I am from Bangladesh your RUclips video continue I looking all the video nice
Happy Compressor 😜
Jesus how hot was it that day what kind of temperature difference were you getting across the a coil
Dear sir u done good job ....
But I have some doubt.. What is the capilarry size with lenth & expansion walve size with tonnge cen u tellme plz & that a/c modal number also...
have you ever felt the need to insulate the txv sensing bulb capilary and external E capilary. iv seen 2 stage split equipment that was insulated like that. Any thoughts or reson behind this.
my only thought was extreme heat gain from the TXV to sensing bulb etc.
Wow, the capillary insulated too? Maybe they did it to protect the tube.
Maybe even for rough weather areas like sea salt.
The large volume of refrigerant (it's a refer charge in the sensing bulb) is in the sensing bulb so generally the cap tube doesn't have much effect I bet.
@@hackfreehvac your the man...
Great work, b0ss. I hate those header manifolds regardless of brand. TXVs all day long
Maintaining super heat gives long life to the compressor and maximum output from evaporator. This what my experience tells me cause I devoted my 35 years only in refrigeration work and I love doing it can call it r&d? I just consider learning.
The TXV definitely maintains better superheat than those silly accurator designs.
Now, if we can get PHM to post one of his conversions, as well. - TB
Art Houston lol is hackfreehvac on hvac talk?
Could you tell me please. What's the gauge of capillary and length . And tonnage of unit and what type of refrigerant🙏🙏🙏🙏🙏😍😍🙂
What size is that line? 3/16th?
Nice job but sorry, that was a bad diagnoses. Your low side valve in the compressor was leaking like crazy.
well yes and no...
The compressor low-side valve got damaged by liquid in the return line... caused by a single blown through orifice once most of them got plugged up.
So yes this fixed the initial problem but compressor was already spent.
Lack of maintenance always an expensive option 🙂
@@glasser2819 hard to know when you see frost at the accurators to fix that is your first thought. its either that or replace the unit depending on the warranty and this one def looked out of warranty
You can order a distributor from sporlan or repurpose a Goodman flowrator assembly minus the piston.
Yeah but that isn't as much fun. LOL
What size cap tube do you use?
3/16" I believe. That is what I usually use but this video is from a while ago.
If the tube is large enough it is more a "distribution tube" rather than a capillary tube, as the TXV does the pressure metering and the tubes just split to each branch.
Your a fucking genius!!👍🏽
Please tell me what the gauge of capillary and length for 5ton please reply 🙏
For a TXV I just used 3/16" tube and long enough to reach the furthest coil feed from the TXV and made all tubes the same length. The TXV then adjusts the flow. It doesn't have to be critical like a capillary tube metering device. Main thing is to not go too small so it acts like a capillary after the TXV. In this case they are just distributor lines to branch and feed each parallel coil circuit.
This video is very helpful, thanks for your help hackfreehvac!
Have you needed to do this on a heatpump before? Carrier uses the same metering device for the heat mode
Most of the units here are heat pumps.
Sadly it is way more complicated. Carrier has several check valves and the bottom part of the outdoor coil isn't used as an evaporator in heating but is used as a condenser in cooling.
It makes it hard to do a TXV conversion since the refrigerant goes through two different passes for heating vs cooling.
I did learn a trick tho to fix these when restricted on the indoor coil.
Remove the refrigerant.
cut open the liquid line feeding the indoor coil.
Hook up nitrogen so that it blows backwards through the indoor coil and out the cut open liquid line feeding the accurator header.
Heat up each accurator orifice with a torch. Make the torch rich in mixture to not melt the pip.
Just as you get the spot with the accurator good and hot crank the nitrogen.
The waxed up oil stuck in the orifice will clear out.
I've done it twice now and had perfect pressures again after clearing it.
hackfreehvac Had a heat pump that is giving me issues great pressures in heat mode but the damn split over the indoor coil was only about 5- 7 degrees! I did notice that the offices were frosting up. I will need to give this method a try thanks for your input.
I also did replace the drier and check valve, but obviously that didn't help. Wish I would've know this before.
I like the ingenuity, but why do so much work on such an old unit?
He’s a technician he gets paid to fix it. Plus I’m sure a new unit was “not in the budget”.
@@DetectingArizona All that work , then needing a compressor , I'm sure that repair bill was 3/4 the cost of a new unit, just sayin .
@@michaelkranz2529 that’s how it goes. I got customers that’ll fix a unit it if cost 100$ less then a new unit for there budget. People are greedy.
@@DetectingArizona True , I have units that are 42 yrs old and they still want to repair instead of replace , usually rental property owners .
Multi orifice coil repair
Yeah. But on a straight cool.
This isn't really an option on heat pumps because of the manifold assemblies and check valves to repurpose each coil as either condenser or evaporator.
The thing that throws me off is your low superheat to begin with. I've seen that problem on these before but I've always had high superheat and low suction pressure. And you can dump all the gas and you want you will overcharging. If you had an orifice that was blown out and bypassing liquid that's not going to cause the flooding because that's high temperature liquid not low temperature liquid. You would have higher pressures and suction line temperature because of the high temperature liquid. I do hate that coil design and their dumb idea with those orifices. It looks like you had an air flow problem for those earlier pressures and temperatures.
"Feminist" folder lol
HA HA! I got a bunch of MEMES I've saved in that folder.
The NSA is coming for your secret meme stash, my dude
who the fuck has the time to do this? carrier are made to be replaced they are throw away units no customer will pay for this