Moisture in the system!

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  • Опубликовано: 15 сен 2024
  • Moisture in the system! Thanks for watching, please Like, Share and Subscribe!

Комментарии • 108

  • @padilla7019
    @padilla7019 Год назад +1

    Great

  • @jaywalling6123
    @jaywalling6123 5 лет назад +12

    I've been doing commercial refrigeration for almost 10 years and I've never seen that before! I would've just replaced that valve. Good work buddy, we learn something new every day.

    • @carsonholtorf8233
      @carsonholtorf8233 3 года назад +1

      Would you recommend going into this career?

    • @gr82becool
      @gr82becool  3 года назад +1

      Yes I would. If you are mechanically inclined. It’s long hours and Oncall too.

    • @CATA20034
      @CATA20034 Год назад +1

      The moisture is still in the system, has to be put under vaccum.

  • @UlisesPalacios
    @UlisesPalacios 6 лет назад +23

    Interesting. I wonder why the outlet of the hand valve was freezing up. Was it partially closed. I don’t think it should have that big of a pressure drop if it was fully open.

  • @ryanmalin
    @ryanmalin 6 лет назад +4

    Nice work man. I’m in the supermarket field as well. It’s good work.
    Thanks for sharing the knowledge.

  • @cesar235cs
    @cesar235cs 5 лет назад +3

    I am a supermarket tech, as a rule of thumb I always remove in line filter inside case, install hand valve and put TXV with removable strainer, regardless how the old one looks like when it goes bad. This helps me like it did in this scenario. By the way I wouldn't go on sunday if a ffcs is at 0-5 degrees, unless I needed that extra OT. Lol

  • @DisgustedGenXr
    @DisgustedGenXr 5 лет назад +4

    1-Typically there should be no frost on the hand valve
    2- when you heat the valve the ice inside will cause the blockage just after the strainer. So I only heat the side nearest the strainer to the bottom, when the ice blockage is clear the refrigerant will flow and melt the ice between the txv and the distributor telling you it is clear. In other words dont melt the frost off the txv outlet and you will get instant feedback when it clears up. Def needed to change the cores while you were there HW , perhaps several times over the next 2 weeks. Save $$$ in the long run on svc calls

  • @rogerchar246
    @rogerchar246 3 года назад +3

    This video helped me out when i first started Refrigeration. Thank You.

    • @gr82becool
      @gr82becool  3 года назад

      Thanks for watching 👍

  • @saltrue1555
    @saltrue1555 5 лет назад +2

    Thank you very instructive video we really appreciate your time to make this videos, God Bless

  • @theackid7887
    @theackid7887 5 лет назад +4

    I’ve read about this in my book. Really cool to see it on video and understand what is happening.

    • @gr82becool
      @gr82becool  5 лет назад +2

      Thanks for watching👍, I’ll try to keep them coming now that the weather is better.

  • @dalimejri5553
    @dalimejri5553 2 года назад +1

    Thanks

  • @erwinnastor154
    @erwinnastor154 3 года назад +2

    GOOD JOB BRO GOT A NICE IDEA INTERESTING

  • @user-md7gs5wc4q
    @user-md7gs5wc4q Год назад

    Thanks for learning something new from this vedio..Please what type refrigeration application was this..

  • @ralphdura9874
    @ralphdura9874 6 лет назад +4

    Appreciate what you're doing

  • @erickobonyo4465
    @erickobonyo4465 3 года назад +1

    Great sir

  • @gurjeetsingh8323
    @gurjeetsingh8323 5 лет назад +2

    Thanks brother, Very good Video

  • @rookierefrigeration4357
    @rookierefrigeration4357 4 года назад +2

    Good video man. I haven’t seen that yet. I’m only 6 months into rack refrigeration. 👍👍

  • @ruslanruban1481
    @ruslanruban1481 2 года назад +1

    Gread video

  • @syedbasheer8210
    @syedbasheer8210 4 года назад +1

    Great video👍

  • @smklimatyzacja88
    @smklimatyzacja88 Год назад +1

    please ! mooore repairs, mooooore !!!!

  • @hg2.
    @hg2. 3 года назад +2

    Thanks for making.
    Did you have to vacuum down the line after opening it to check the TXV screen?

    • @gr82becool
      @gr82becool  3 года назад +1

      Not on this one , I still had a small amount of vapor coming out , so no Noncondensible‘s got in

  • @f1reguy587
    @f1reguy587 11 месяцев назад

    Ive had this situation a couple of times, but today the txv i believe to be the cause, same behaviour of low suction pressure and ice at the oriface, no bubbles in sight glass, very hot discharge temp. Did start with adding refrigerant as was advised, no pressure change. Slight increase of head pressure. I shut the compressor off so it wasnt running when i heated the txv, (pressures had equalised before i started work, but unit had cut out on low pressure) would run at 20PSI for a minute or two (R22). So tomorrow sourcing a txv.
    Onto the question, if heating the txv cleared the issue, allowing the refrigerant to flow, thats cool, txv is sensing and running, but the refrigerant has still got moisture in it, there had to be a scenario where in my case the moisture could leave the drier, dont you have to reclaim the refrigerant, and replace it into a vacd system? Moisture a funny thing, all it takes is the condenser to get clogged up, raise the overall system temp and let the moisture out of the drier. Could take months to show up…

  • @davepenprase
    @davepenprase 5 лет назад +2

    Thanks good vid sir.

  • @Go2.R3F
    @Go2.R3F 5 лет назад +4

    Always removed old liquid line drier and straight pipe it only if the TXV has a inlet screen.......driers in cases are only used for start up.........

    • @wickylopez8867
      @wickylopez8867 5 лет назад +2

      Gio!! How’s it going??! How’s work?? This is lopez

    • @DisgustedGenXr
      @DisgustedGenXr 5 лет назад +1

      No true. Quite a few retailers have them in every case

  • @adammiller2246
    @adammiller2246 3 года назад +2

    I will share a call with you all that I had. Guess what time it came in? Yes, 2 am!! Anyway, the call was multiple cases down on rack B. Rack is in a house on the roof. Air cooled, Low temp R404a 60 hp Copeland discus comps, hot gas defrost. I checked suction pressure for the rack and it was at about set point. Had 40 % receiver, solid sight glass. .. oh oh. Went down to the cases and a few of the cases were running but about 4 or 5 of them were not. Checked suction pressure at the case and it was close to set point. Hand valve was open on all 4 cases. We know that the supermarket employees never close a hand valve and forget to turn it on.......I did notice that the TXV was warm and had frost on it. Did not look normal.
    Next thing, I got a bucket of hot water and poured it onto the TXV. In a minute I heard refrigerant flowing through the valve. Did the same to the other 3 . When I did the last one, 2 more cases shut down.
    This was not good. I wound up working about 34 hours, Tues and Wed. Went to supply house and brought all of the 163 flare filter/driers they had and a bunch of 3/8 " flare nuts, A case of 48" water cores. Spent the rest of the day there installing flare driers in all of the rack B cases. The call came in 2am Tues morning. I spent the rest of the week each day changing driers and putting hot water on TXVs . Had to sweat in 2 new TXVs as they would not clear. Of course I did check/clean inlet screens also. Little by little the driers took longer time before they needed to be changed. Finally, the issue subsided. What was the cause? They had a helper in the store by himself. ( which I voiced my opposition about it) He noticed that the oil res. was low on oil. So, he took a gallon plastic bottle that was in the motor room and added it to the rack!
    DO NOT EVER ADD OIL FROM A STRANGE CONTAINER! unless you recently used oil from the bottle that you closed the bottle tightly, you have the date and your name on it. Even with that, I recommend using the whole bottle and not leaving any partial oil bottles in the motor room. I think he learned his lesson, because I demanded the dispatcher and company owner to have him work with me though this mess. The bottle may had water in it from temperature changes in the motor room or who knows what was in it. BTW, I did not beat him up too much! :) We became good friends because of this.
    Be safe

    • @gr82becool
      @gr82becool  3 года назад

      You are absolutely right about the old oil in the motor room. If I see old oil in the motor room I dispose of it properly. Right away

  • @mikefreedom5612
    @mikefreedom5612 3 года назад +1

    Thank you

  • @jbprinting657
    @jbprinting657 5 лет назад

    nice sharing, I've been 15 yrs. in aircon industry and we've been repair this for 1 day, and you only did for a minute

  • @davesidoti8498
    @davesidoti8498 4 года назад +1

    I love your videos can you do some sub cooler operation videos thanks for your knowledge

    • @gr82becool
      @gr82becool  4 года назад

      When I get something I will do it, thanks for watching 👍

  • @Harrypizzalover
    @Harrypizzalover 4 года назад +2

    Hey man great stuff , I’ve been doing refrigeration for a couple years now and I just started doing racks . Do you have to pull a vacuum after pumping down at hand valve ? I’ve had different senior techs tell me different stuff . What your take on it ?

    • @gr82becool
      @gr82becool  4 года назад

      To me it all depends on how new the ball valve is. If you have a new ball valve then yes if not then either replace ball valve and then put it in a vacuum or purge it if it’s an old ball valve. You will find out real quick

  • @bhattt121
    @bhattt121 3 года назад +1

    I did same thing to one of the cases because had clean a txv ,it catch a fire and literally make me stop breathing .
    I had rag handy that save me ?

  • @metoo7116
    @metoo7116 3 года назад +1

    flash gaz

  • @adrianmoran1041
    @adrianmoran1041 4 года назад +2

    How do you preform your pump down?

  • @giosource08
    @giosource08 5 лет назад +3

    Good job brother, is this case being fed by a parallel rack, if so, I wonder if you replaced the filter driers to help with moisture removal. Otherwise, it might happen again. We had situations when we had to come back weekly to replace filters due to moisture in parallel racks.

  • @murfdog19
    @murfdog19 5 лет назад +1

    Good old Target!! I got called out to Target a few weeks ago at 11:30pm on a Sunday night. It was a 1.5 hour drive to the store. The MOD was pissed when I got there. The ambient produce room was warm. The MOD said FMOC called at 8:00pm and said they would have a tech come out in the morning. She left the store at 11:00, then FMOC called her at 11:30 and told her they were sending me tonight, and she had to go back. I checked the E2 when I got there, and the room went into alarm at 7:30am!!

    • @gr82becool
      @gr82becool  5 лет назад

      Wow 7:30 am !! Yes MOD's hate staying late.

  • @terryj.macmullen9968
    @terryj.macmullen9968 4 года назад +1

    after that misery,i tried to convince the customer to change tx valves and go with 507 .,get rid of demand cooling,less oil issues(high compression ratio was burning up the oil and clogging oil pick up in crankcase causing constant oil failure problems)they went with MO 99.

    • @gr82becool
      @gr82becool  4 года назад

      😳 wow they still use that

  • @donnellbaxter8050
    @donnellbaxter8050 5 месяцев назад

    Thanks make more videos

  • @terryj.macmullen9968
    @terryj.macmullen9968 4 года назад +1

    we had a store that was using an r-22 low temp rack.(poison set up)
    the guy on call went to site to check this rack for oil failure on #1 compressor.said it was low on oil level so added oil.put in oil that was in compressor room.not from a sealed container.after leaving the cases started warming up.tx valves frosted totaly, not half way on valve body.the old he put in was loaded with moiture.what a struggle that turned out to be.took a while,many drier changes etc before we got it straightened out.oil changes and new refrigerant.big mess.

    • @gr82becool
      @gr82becool  4 года назад

      Wow that sounds like a pain and a lot of work. Now about old oil in motor rooms, I tell everyone I train or work with, never leave oil in motor rooms or use it. Sorry that happened to you.

  • @MILLERS066
    @MILLERS066 5 лет назад +4

    Btw don’t forget to call FMOC and have the PMT sign you out Lmfaoo

  • @earlblakley4910
    @earlblakley4910 6 лет назад +1

    Just enough moisture in that system to be aggreviating. All you can do is change filters and see what happens.

  • @navjotsingh-lr6nn
    @navjotsingh-lr6nn 3 месяца назад

    I am second year apprentice. When you pump down did you did from rack or hand valve . Please answer me

  • @lincolnhunt9558
    @lincolnhunt9558 2 года назад +1

    Don't you have to pull a vacuum on that circuit before you open the valves again?

    • @gr82becool
      @gr82becool  2 года назад

      The system still had a small amount of pressure. So I did not have too. 👍

  • @manny4554
    @manny4554 2 года назад +1

    Whaat palm springs area!

    • @gr82becool
      @gr82becool  2 года назад

      I’m from Coachella Valley but the call was, I think Riverside Ca.

  • @SoutheastHVAC
    @SoutheastHVAC 6 лет назад +3

    Put more videos out man!

    • @gr82becool
      @gr82becool  6 лет назад

      I am editing one. I've been really busy with this heat. No excuses right 👍

    • @SoutheastHVAC
      @SoutheastHVAC 6 лет назад +1

      RefrigerationTech I feel you you man. I just learn so much out of your videos especially since this is the part of the field I want to get into!

  • @coldfinger459sub0
    @coldfinger459sub0 4 года назад +3

    1: Frost on the hand valve???? Hmmmm 🤔
    2: let’s say hand valve had nothing to do with?. 2a: supposedly The system is just worked on for moisture problem and it still had a moisture problem. Somebody’s not competent at their job and took shortcuts.
    3: if this was a new system installed there definitely should’ve never been a moisture issue that was caused by the technician. You should now be working at McDonald’s or a janitor service but not in the HVAC industry.

  • @MR-nl8xr
    @MR-nl8xr 6 лет назад +2

    Ground wire is #1.

  • @besttoursenterprisess.a.5214
    @besttoursenterprisess.a.5214 7 лет назад +1

    What seems puzzling to me is that you said that you evacuated the system, although frost build up was still present on the TXV. I was always told that starting the system without refrigerant can be bad for the compressor. I also noticed that you applied a torch to the TXV. I am not sure if the system still had refrigerant in it or not. I was again told that applying heat to the system when it contains refrigerant can cause an explosion. Can you explain in detail how you approached the TXV to remove the mosture? Was that with, or without refrigerant still in the system?

    • @gr82becool
      @gr82becool  7 лет назад +7

      +Best Tours Enterprises, S.A. When I hit the txv with a torch, that was with refrigerant in it and the system running. I did not have it in a vacuum yet. It was not alot of heat only enough to warm up the valve to melt the moister that was frozen in the txv. It will not cause an explosion. When the moisture is melted from the txv it will the get collected in the liquid line drier at the rack. Thanks for your comment.

    • @arronmcgarr2665
      @arronmcgarr2665 7 лет назад +1

      Videos are excellent 👍🏾

  • @mikepulsinelli248
    @mikepulsinelli248 Год назад

    Jack leg!!

  • @SoutheastHVAC
    @SoutheastHVAC 6 лет назад +3

    What does that blue hand valve do?

    • @gr82becool
      @gr82becool  6 лет назад +3

      It stops the refrigerant flow for that case to service it.

  • @treverkirk8110
    @treverkirk8110 5 лет назад +1

    How did that much moisture get in the system? Also did you notice your dump line was iced up? For some reason that caught my eye, wouldn't usually see frost on that I would think.

    • @gr82becool
      @gr82becool  5 лет назад

      I'm not sure how the moister got into the system, that was not my original call. I was on call when I filmed this video, but I heard about it. No I did not notice my dump line frosted, good eye.

  • @ralphhalili8511
    @ralphhalili8511 5 лет назад +1

    Ive worked on walk in freezer/ fridge and reach ins, when you open up the strainer not sure if you pull a vacuum after. Do you have to or not, i want to understand. Just want to expand my knowledge in refrigeration. Thanks

    • @gr82becool
      @gr82becool  5 лет назад +1

      Yes, you are suppose to pull a vacuum

    • @ralphhalili8511
      @ralphhalili8511 5 лет назад +1

      Thank You for answering and for the video.

    • @romandofus3986
      @romandofus3986 5 лет назад +3

      Depends if the EPA is standing over your shoulder 😁. Unless I’m torching the reality is if you can leave the valve cracked a hair or with your gages or whatever you have to do just to keep a whisper of gas flowing to keep it dry. Yes I realize hi glide blends and vapor loss blah blah but what’s the charge for rack? 1500 lbs? That side is a oz or two gonna make or break the gas? Of course not

    • @cesar235cs
      @cesar235cs 5 лет назад +2

      No, you dont pull vacuum, since you still have positive pressure coming out, no air goes into system

    • @gr82becool
      @gr82becool  5 лет назад +1

      Yes your right, 👍

  • @SoutheastHVAC
    @SoutheastHVAC 5 лет назад +1

    Fresh meat case. Medium temp rack. Blowing out 26 degrees. Great airflow. Txv screens are clean. Coil is not iced up at all. All fans are running. Manager wants case at 18 degrees. Back epr out as far as it would let me. Temperature dropped to 25. I personally don’t think it’s possible to get this low but would at least like to get to the low 20s, but not seeing it’s possible. Any suggestions?

    • @gr82becool
      @gr82becool  5 лет назад

      You can try dropping your suction pressure at the Rack. BUT, if you have a floating suction you CAN'T do that. All your circuits has to be on some kind of temp control if you drop the suction pressure. If no one has dropped it to 18 degrees in the past then just simply tell the manager that this case is not designed to drop that cold. Also, if there is a Refrigeration Schedule (RS) Sheet in the motor room, look at the design coil temp for that case, OR simply GOOGLE the specs to find that info. Good luck!

  • @zane770
    @zane770 3 года назад +1

    whats that extra copper line coming out of the distributor?

    • @gr82becool
      @gr82becool  3 года назад

      Good question, that for hot gas defrost. It bypasses the txv

    • @zane770
      @zane770 3 года назад +1

      @@gr82becool damn rookie question on my part. thanks mate. only ever seen heater elements on the little exposure ive had to supermarket systems.

  • @axiomteck
    @axiomteck 4 года назад +1

    can you sho superheat on those hussmann case

  • @D_Nice981
    @D_Nice981 5 лет назад +1

    What method do you use to pump down a circuit down on the rack ?

    • @gr82becool
      @gr82becool  5 лет назад +1

      The blow and go method, lol, J/K......I shut down liquid ball valve then use my guages to pump liquid to suction to help speed up process. Them when there is only vapor. Force compressors on and ball valve off all other suction lines except yours. When I get below 5 psi I shut off suction ball valve to my circuit and open all others, then put rack back to normal.

    • @D_Nice981
      @D_Nice981 5 лет назад +1

      could I use the recovery machine method? Close my liquid and suction line lines on the circuit I"m working on
      . Connect my gauges to both of them. Connect my middle hose to my recovery machine. then connect my hose from my recovery machine to a suction port on another system. @@gr82becool

    • @gr82becool
      @gr82becool  5 лет назад

      You could, but I think that might take longer. And you have to haul that extra equipment around.

    • @D_Nice981
      @D_Nice981 5 лет назад +1

      RefrigerationTech true I have tried ball valving all the suction line off except the circuit I’m working on and still did not work for me . I’m just trying to find an easier way of doing it

    • @romandofus3986
      @romandofus3986 5 лет назад +1

      Shut off isolation valves assuming so fortunate. Hook charging/evac hose from gage manifold to suction service port on a running compressor. Open gage manifold and front seat compressor suction service valve. Probably have to manually drive low pressure switch if mechanical with screwdriver. Let compressor suck gas in while pumping down. Don’t let a scroll run in a vacuum though- really not a good idea to run any in a vacuum but definitely not scroll

  • @hangngoaigiare
    @hangngoaigiare 4 года назад +1

    So it gonna contaminate the whole system?

    • @gr82becool
      @gr82becool  4 года назад +1

      No, they where already cleaning the moister out of the system weeks before I arrive. This was the remaining of that moister and the other techs where going to show up the next day to continue cleaning out the system. 👍

  • @ts-ln2rk
    @ts-ln2rk 6 лет назад +1

    Did you just turn the hand valve off and inspect the screen

  • @lancerudy9934
    @lancerudy9934 6 лет назад +1

    Did you do a super heat on case.

  • @gamersgtech9601
    @gamersgtech9601 6 лет назад

    Γεια σας είμαστε ψυκτική εταιρία από την Ελλάδα αν και δεν καταλαβαίνω πολύ καλά τα Αγγλικά και σας γράφω στα Ελληνικά κατάλαβα οτι είχε βρομιές και σκουπιδάκια μέσα στην εκτονωτική βαλβίδα και η τεχνική που δείξατε στην συγγκεκριμένη περίπτωση ειταν σωστή αλλά εάν είμουν στην θέση σου εγώ προσωπικά θα έκανα pump down ,θα απομόνωνα το ψυγείο και θα έβαζα άζωτο με καθαρή βενζίνη, βαίβεα αυτό θα είταν μια χρονοβόρα διαδικασία και επιδή είναι αποκλιστικά στην εκτονωτική θα έπρεπε να κάνεις πατέντα οπότε η τεχνική αυτή είταν σωστή με εκτίμηση Ψωμάς Βλάσιος Παναγιώτης

    • @romandofus3986
      @romandofus3986 5 лет назад +1

      I agree with this

    • @shatoboy1
      @shatoboy1 5 лет назад +2

      He says that while you pull vacumm, drink a couple of beers and smoke some weed. Doing that will clear your head and rethink again how to get rid of the moisture.....

  • @centinela4793
    @centinela4793 6 лет назад +3

    I preffer wet clothes than fire to defost the txv

    • @DisgustedGenXr
      @DisgustedGenXr 5 лет назад +1

      Centinela wet clothes? You mean cloths? U can just pour hot water on the valve. Wet rags will stick to everything in the case like velcro. Torch is the most efficient way

  • @MILLERS066
    @MILLERS066 5 лет назад +2

    Your hot gas line is frosted I bet your check valve is no good

    • @DisgustedGenXr
      @DisgustedGenXr 5 лет назад +1

      Shane Miller if the check valve was no good it would wash the rack out (oil safeties). The only time the HG dump is clear is in def

  • @rocker8692
    @rocker8692 3 месяца назад

    Dildos in the system again

  • @javiertrejo2694
    @javiertrejo2694 4 года назад +1

    MADE IN CHINA CHAFA¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡