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Type: Posts; User: bwd111

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  1. Replies
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    Sight glass clear then bubbles and swirls

    Working on a 5 ton split system that keeps elevator cools but the question is changed out compressor and txv. I had correct subcooling of 9 degrees and sight glass is full then swirls then goes...
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    232

    Would changing from mp39 to 134a

    Removing the mineral oil and replacing with POE oil and keeping a temp at 40 degrees give problems to the heat transfer? I found this article Retrofit Situations: Residual Mineral Oil in Polyol Ester...
  3. Replies
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    616

    Liquid R-12 mixes completely with all types of...

    Liquid R-12 mixes completely with all types of refrigeration oils (except for the separation of wax at very
    low temperatures). In an R-12 system, any mineral oil which escapes the compressor would...
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    449

    Any tips on how to change the oil on a

    Copelametic EWV1-0200-TAC ? I found the nut with a set screw in the middle
    next to the oil sight glass , but was unable to push a tube in the hole and after looking where set screw was removed...
  5. Replies
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    224,908

    Still a little lost if I wanted to use the...

    Still a little lost if I wanted to use the manifold with my iPhone am I able just to use the hoses and have the information streamed back to my iPhone where would somebody need to use the I connect...
  6. Replies
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    224,908

    Quick question will the imanifold be of use when...

    Quick question will the imanifold be of use when working on walkin coolers and freezers or is the manifold better suited for residential and light commercial applications
  7. I like bluefish better

    I like bluefish better
  8. Replies
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    616

    To bad we cant use R-11 to flush the system...

    To bad we cant use R-11 to flush the system after draining the mineral oil as I found 500 pound of R-11 in the shop from when we had a chiller recovery years ago
  9. Replies
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    I was reading this article and shows if evap is...

    I was reading this article and shows if evap is cooling at 40degress 416a should work fine. I was going to drain mineral oil for the compresser using mp39 and add same amount of oil that was removed...
  10. Replies
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    Retrofitting Considerations Equipment built for...

    Retrofitting Considerations
    Equipment built for R-12 will be sized a bit too small compared to equipment built for R-134a. In order to do the same job an R-134a system will need a larger compressor...
  11. Replies
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    616

    Will HCFC - R416A work for replacment of

    MP39? We are changing out all the evaps and the temp is keep at 40 degrees
    If the OIL is changed will R416A work?
  12. m9 39 on those units keeps the box at 40 degrees...

    m9 39 on those units keeps the box at 40 degrees and the HP80 keeps those at -10 degrees
  13. The compressor is an old copelametic KWG1...

    The compressor is an old copelametic KWG1 0075-TAC use mp39 and the ewv1-0200-tac uses HP 80
  14. Replacing walk in evaps and wanted to see if I can use

    A different refrigerant than what we are using now. The new evaps txv can use r12/404/507 currently we are using mp39 and 3 of the freezer's we use hp 80. Trying to see if I the compressor would work...
  15. Replies
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    451

    Looking for capicity for McQuay-perfex

    I have searched every where and need to replace 10 coils evap and need to know what the capacity is. Model RLC-105C-M-11
  16. Replies
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    858

    I couldn't isolate the u bend but I was able to...

    I couldn't isolate the u bend but I was able to pinch it together very tight and then I just used my torch on a low heat setting and was able to braze it so there's no leak now
  17. Replies
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    858

    [QUOTE=lkapigian;21111341]Oxy torch is fine,...

    [QUOTE=lkapigian;21111341]Oxy torch is fine, control the heat better- If not to big, you may be able to fill it, if not make a patch out of a piece of copper and lay it over the hole a braze a patch...
  18. Replies
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    858

    Went to fix a leak in condenser and

    Burned a hole in the loop bend forgetting how thin the walls of copper are on the bend and made the tiny hole bigger! Any suggestion on how to repair condenser now? I should of used propane instead...
  19. All wires were removed and went from terminals on...

    All wires were removed and went from terminals on comp to shell and also from terminals to suction and discharge lines and had continuity
  20. Also the run cap comp that was on the name place...

    Also the run cap comp that was on the name place of compresser ask for a 60 and a 50 is what I found on unit. Here are the ohms I goS to c 1.4 start to run 2.919. C to r 2.918
  21. Breaker keeps tripping and this is what I found

    Of all days my day off and At my daughters trouble shooting condenser cause breakers keeps tripping. I have 0.000 ohms when I go from start to shell of comp and I get beep on meter same with run but...
  22. Thread: Capacitor

    by bwd111
    Replies
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    824

    I can't believe I couldn't remember that! I took...

    I can't believe I couldn't remember that! I took fan off of dual and put it on 5mfd cap and other side of that 5mfd cap I wired to common on 50/5 cap and it's running great.
  23. Thread: Capacitor

    by bwd111
    Replies
    9
    Views
    824

    Capacitor

    I haven't work on a res unit for a while but question is cap is dual start run 50/5 and im getting 50 MFD but on the 5 MFD getting 2.9 MFD and fan keeps over heating and blowing breaker question is...
  24. Replies
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    224,908

    That is what is holding me back from getting this...

    That is what is holding me back from getting this manifold! Maybe one day they will not over think it and make a very user friendly manifold or even this manifold easier to use. Don't have time in...
  25. Replies
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    Just saw one on eBay for 575.00 I wondering why...

    Just saw one on eBay for 575.00 I wondering why the person is selling if it's such a great product???
  26. Thread: Anemometer

    by bwd111
    Replies
    11
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    2,295

    [QUOTE=jpsmith1cm;20936501]I've had good results...

    [QUOTE=jpsmith1cm;20936501]I've had good results from my Kestrel 1000

    Less than $100[/QUO

    Is that difficult to use the transverse method of getting and average?
  27. Replies
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    Checking txv If you work on air conditioners...

    Checking txv
    If you work on air conditioners you have heard about the thermostatic expansion valve problem be-deviling the industry right now. A relatively small detail in the manufacturing of a...
  28. Replies
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    35,768

    I took the evap out yesterday and cut out header...

    I took the evap out yesterday and cut out header to access all orfices and cleaned with small wire and used nitrogen! I will install Evap Monday and hope all is good. Lots of work and I took lots of...
  29. Replies
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    I was charging a Rheem yesterday and same results...

    I was charging a Rheem yesterday and same results with adding two pounds but got readings with 85 degree house outside temp of 96 and gauges reading of 127.2 suction and 17.1 sh and 551.6 high side...
  30. Replies
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    35,768

    Guess we are going old school with this unit...

    Guess we are going old school with this unit meaning I have to pull out coil and get access to all orifices and blow them out with nitrozen then sweat them back in . Good news its only 100 and not...
  31. Replies
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    I have the same problem with a carrier rooftop...

    I have the same problem with a carrier rooftop where the orifices are clogged and finding the parts to convert to a TXV isn't going well! I might have to remove and clean out each orifice like I did...
  32. Equalized system in twin reciprocating compressors in parallel

    What's the equalized system that is used when two reciprocating are in parallel? Is it internal,single pipe crank case,double pipe crankcase or discharge gas equalizer system?
  33. Using a larger filter drier and not adding refrigerant

    I was told that if you use a larger filter drier and not add refrigerant to compensate that the drier will act like a small evaporator! Has anyone heard of this or is this a myth?
  34. Replies
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    Does soldering the cap tube to suction line

    Sub cool the liquid refrigerant? Took a class on friday and was told it increases effciency, prevents slugging and relives stress on the cap tube which I say that has no bearing on relieves stress on...
  35. Thread: Potential relay

    by bwd111
    Replies
    12
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    1,544

    After speaking to former rses president and Norm...

    After speaking to former rses president and Norm Christopher I was told counter emf causes contacts of the potential relay to open
  36. Thread: Potential relay

    by bwd111
    Replies
    12
    Views
    1,544

    The operation of the potential relay is based on...

    The operation of the potential relay is based on the increase in back-electro-motive force (back-EMF) or a bucking voltage that is generated across the start winding as the motor increases in speed....
  37. Thread: Potential relay

    by bwd111
    Replies
    12
    Views
    1,544

    Potential relay

    What cause the contacts of the relay to open? Is it the counter EMF of the motor or current draw of the motor ?
  38. So it is the dome shell and not the compressor...

    So it is the dome shell and not the compressor inside the dome
  39. Debate on where the suction line discharges on a reciprocating compressor

    Is it the dome shell or compressor inside the dome?:gah:
  40. Replies
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    509

    Not trick question! Can test contacts if cold...

    Not trick question! Can test contacts if cold control is has correct
  41. Replies
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    509

    Cold control I think has lost its charge

    What are the results if a capillary of a cold control has lost its charge? Will the compressor not run or run continuously?
  42. Replies
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    699

    Determining factor in relay selecting

    Relay replacement what is the determing factor? Is it the system voltage or start and run current?
  43. When will a capacitor-start compressor fail to start?

    I know this is a basic question but cant remember if its when the cap is open,out of phase or shorted? I know you will hear a hum at times when the cap is bad but I was thinking when the cap is open...
  44. Seems like one but specs call for device that...

    Seems like one but specs call for device that control pressure
  45. What pressure controlled metering device operates

    in response to evap pressure? Is it a cap tube or txv or AEV
  46. Where should you check for subcooling of a domestic refrigerator ?

    or cant you check for subcooiling? Some people have told me between the condenser and the cap tube but then others have said you cant check for subcooling on a domestic refrigerator
  47. Needs some calc help on a pneumatics transmitter system

    I have a given transmitter and it has a range of 0 to 200 degrees. It maintains an output signal of 3 psig at 0 degrees and 15 psig at 200 degrees. What is the output change per unit of controled...
  48. Replies
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    224,908

    That's why I have everything delivered to my work...

    That's why I have everything delivered to my work cause there is always someone there to sign and receive the packages
  49. Replies
    1,418
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    224,908

    I do a lot of selling on eBay and never have a...

    I do a lot of selling on eBay and never have a problem with USPS shipping to P.O box. FedEx won't ship to PO box.
  50. Replies
    1,418
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    224,908

    Jim you know those test are hard and to only get...

    Jim you know those test are hard and to only get a plaque where's the wow factor! Give away a great prize with the award and people with talk and that is word of month which as you know the best kind...
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