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Type: Posts; User: Olivero

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  1. Replies
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    I use the LED Lenser I6R ...

    I use the LED Lenser I6R

    https://www.ledlenserusa.com/professional/iseries/i6r-466.html

    It's by far the best pocket flashlight I've had, battery lasts long enough with my usage to where I just...
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    I agree, at this point I would do the above. ...

    I agree, at this point I would do the above.

    Add gas and if needed, bypass the LP so you can get it dialed in.

    It is a fixed pressure switch or adjustable?
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    He can't get it running long enough to establish...

    He can't get it running long enough to establish these.
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    Wow, that's interesting. You sure you put...

    Wow, that's interesting.

    You sure you put enough freezy juice in there?

    Still sounds like a restriction.

    I've heard of TXV's needing to be changed completely, body and all for it to fix some...
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    So now it's kicking out on load pressure instead...

    So now it's kicking out on load pressure instead of high pressure?
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    Just curious, is this a new install? I can't...

    Just curious, is this a new install? I can't remember if it is.
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    Totally understand where you're coming from. ...

    Totally understand where you're coming from.

    Helps sometimes to take a step back, think about it and then continue, sometimes the lack of logical thought can be the bane of our trade when you are...
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    Okay, so here's the thing. It won't be a...

    Okay, so here's the thing.

    It won't be a compressor because the compressor is sucking in refrigerant but there is nothing there, therefore the vacuum. If the comp valves were leaking by or...
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    Okay, sounds like a good plan. It's gotta be...

    Okay, sounds like a good plan.

    It's gotta be something stupid.

    Does the TXV have a strainer?
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    Very true. It could bu. I do think blowing it...

    Very true. It could bu.

    I do think blowing it out both ways with nitro would take care of it, just need to isolate and see where the flow stops.

    If it's 200-300 PSI of nitro and it's...
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    That is so odd. Are you 10000000000000000000%...

    That is so odd.

    Are you 10000000000000000000% sure it's not running backwards?

    It's simply impossible that you can have nitro coming out but not refrigerant, it's impossible.

    You're going...
  12. Lol, okay so it might be worth it. What about...

    Lol, okay so it might be worth it.

    What about load calculations? You guys ever need that?
  13. Psychrometry, is it useful in refrigeration?

    Just checking out Trane's new training and I'm wondering if learning about psychrometrics is worth it for me. I mainly do refrigeration, walk ins, reach ins, etc.

    Also they have stuff on Cooling...
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    Just seems odd to me that the manufacturer of the...

    Just seems odd to me that the manufacturer of the compressor and the retrofit refrigerant are saying it has to be changed yet it's "totally fine" to mix them.

    I get what you are saying and that it...
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    I could see someone retrofitting just to get it...

    I could see someone retrofitting just to get it over with but I wouldn't personally do it until there was some sort of problem which would just make the retrofit another step in the repair. Like...
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    Oh, I see. I thought you were referring to...

    Oh, I see.

    I thought you were referring to MO99.

    Mixing oils is also bad practice is it not?

    "Mixing of Polyol Ester and Mineral Oil

    Published 05/19/2014 10:05 AM | Updated...
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    Sure, there's lots of factors, but a refrigerant...

    Sure, there's lots of factors, but a refrigerant is a refrigerant, I doubt suction line velocity is a factor in selecting a replacement refrigerant I would imagine that since the piping worked out...
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    You'll have to make an adjustment and try to run...

    You'll have to make an adjustment and try to run it, not other way to do it.

    It sounds like a restriction and it will most likely be at either your TEV/TXV or the filter dryer.

    You could also...
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    Ah. Can you post in PSI rather than Bar, we...

    Ah.

    Can you post in PSI rather than Bar, we all use PSI here.

    If you have suction line in vacuum, no refrigerant is making it past your TXV, it would have to be a restriction of some sort. Is...
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    There's lots of other refrigerants you can use...

    There's lots of other refrigerants you can use but it depends how much work you want to put into it.

    Some R22 units use Mineral oil, some use POE. 407C uses POE and MO99 uses Mineral oil so if you...
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    You could also measure Ma on the contactor to see...

    You could also measure Ma on the contactor to see if there is a partial short which could cause excessive amperage.
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    Absolutely, so many sensors and safeties to watch...

    Absolutely, so many sensors and safeties to watch out for.
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    I Actually started out on the hot side and moved...

    I Actually started out on the hot side and moved over to doing cold.

    Kklobas,

    It's piece by piece, I don't think I've attended any factory training on any equipment even though I've looked...
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    Use SS bolts for sure, then silicone the hole and...

    Use SS bolts for sure, then silicone the hole and stick the bolt through, seal it on both sides. you should be good.
  25. Beat me to it.

    Beat me to it.
  26. Thread: Low Delta T

    by Olivero
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    I would agree, superheat specifically would...

    I would agree, superheat specifically would determine how much of your evaporator is being utilized, if it's high superheat, it means you have a lot of "wasted" space in your evaporator coil which...
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    IT depends, you are saying your coil is what's...

    IT depends, you are saying your coil is what's shorting, I would think it's some sort of power supply issue, they don't otherwise go bad that often.

    Did you try a different brand?
  28. Replies
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    I specifically said that adding refrigerant to...

    I specifically said that adding refrigerant to see if a TXV is working properly is a correct form of troubleshooting, I don't disagree with that practice, I don't care if it's a few ounces or 8...
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    There's a difference between 1. Recognizing...

    There's a difference between

    1. Recognizing that a system is not perfect and finding out why, and knowing how to solve it.
    2. The idea that the customer doesn't care, so you see it's not perfect...
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    At what point do you consider an investigation in...

    At what point do you consider an investigation in order?

    If your numbers are off, that should warrant an investigation, no?
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    Suction pressure will change slightly depending...

    Suction pressure will change slightly depending on exterior conditions or wherever your condenser is but the simple fact is that the system is designed to work within a wide range of ambient...
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    Without knowing head pressure that's a useless...

    Without knowing head pressure that's a useless fact. It's obviously wrong, it won't work right.

    R22, at 40 PSI is 18*F saturation temp which would freeze your evap coil inside, so what did you do...
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    [QUOTE=Ghyde6005;25763966][QUOTE=Olivero;25763954]...

    Sure, but that's not what you are saying.

    You are coming off by saying you already know they don't want to fix it, so you see it, and ignore it, claiming it works just fine because the customer...
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    [QUOTE=Ghyde6005;25763755][QUOTE=pecmsg;25763604]...

    [QUOTE=Ghyde6005;25763755][QUOTE=pecmsg;25763604]



    Look, it's their choice. Offer the service. What's more likely? They'll want a tune up or a brand new system? If you see some catastrophic...
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    Sounds like a safety to me or some sort of...

    Sounds like a safety to me or some sort of loose/intermittent connection.

    Can you clip an alligator clip to the wires and run them to your meter and see what the voltage is as it's happening?...
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    Though I do agree with people not necessarily...

    Though I do agree with people not necessarily wanting things fixed if everything seems to be working well, but as an example, I saw a SG reading moisture content was present so I told the customer...
  37. Thread: Filer dryer

    by Olivero
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    Why do you think it will? What's the concern,...

    Why do you think it will?

    What's the concern, I feel there's more information you have about this which we are lacking.

    A filter drier is a filter drier, the only thing that makes them able to...
  38. Thread: Filer dryer

    by Olivero
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    Won't be any different other than it being...

    Won't be any different other than it being biflow. Heat pump systems flow both ways where a traditional system doesen't.

    I think the only difference is that they are biflow, but I don't know for...
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    I never even got to try R12 :( I'm too young.

    I never even got to try R12 :( I'm too young.
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    R12.

    R12.
  41. That means I got 1 year left till I'm no longer...

    That means I got 1 year left till I'm no longer considered an apprentice, lol.

    I've messed some stuff up too, but I never really work with another tech..... I'm by myself most of the time.
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    You got ways to go. One of mine was about 30...

    You got ways to go. One of mine was about 30 pages.

    All seriousness though, these guys can be a little rough at times but you just gotta keep doing what they are asking and it'll work out.

    I...
  43. An apprentice is considered an apprentice for 10...

    An apprentice is considered an apprentice for 10 years?
  44. Man, that's gotta suck.

    Man, that's gotta suck.
  45. Replies
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    Did your question get answered?

    Did your question get answered?
  46. Replies
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    Sheesh, that's crazy. Imagine the compressor...

    Sheesh, that's crazy.

    Imagine the compressor shooting a pin at you at 600 PSI, go right through you I imagine.
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    Got it on the ambients, thank you.

    Got it on the ambients, thank you.
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    Okay, that's what I assumed since there's all...

    Okay, that's what I assumed since there's all these ways to boost or maintain pressures in various ambient temps, I completely agree, but regardless of the weather outside, if your unit is 410A and...
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    Correct me if I'm wrong but shouldn't low and...

    Correct me if I'm wrong but shouldn't low and high side pressures be normal despite what the temperature is outside? The refrigerant has to be a certain temperature no matter how cold it is outside,...
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    Sounds like a good idea, though 500 PSI might be...

    Sounds like a good idea, though 500 PSI might be a little much unless it's for 410A
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