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Type: Posts; User: HVAC_Austin

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  1. Replies
    8
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    1,190

    What does "A.C.P." mean?

    Hello everyone,

    I came across the abbreviation "A.C.P." on a unit nameplate today. It was listing the specifications for each compressor and the numbers below "A.C.P" appear to be amperage. Anyone...
  2. They sounded like a good idea, but like Joehvac25...

    They sounded like a good idea, but like Joehvac25 says they apparently can cause problems if you're not careful. Will think very carefully before using them again. Picture below.

    372781
  3. Replies
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    929

    Different types of valve caps

    What's the difference between these different valve caps (pictured below): 9/16" brass caps, round brass caps, and plastic caps? Is one intended for the liquid line and another for the suction line?...
  4. 460 volt primary, 24 volt secondary, result of...

    460 volt primary, 24 volt secondary, result of mistake was an open primary coil. I do have electrical training, but I got in a big hurry and attempted to do something which I have not been trained to...
  5. My first blown transformer! (I'm so proud)

    Went to jump out a water source heat pump today using R to Y1 (the maintenance guys would of had to start it using their automated system, and they typically don't want to be bothered). It still...
  6. Replies
    34
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    3,677

    Thanks, Glenn. I'm headed to Johnstone tomorrow...

    Thanks, Glenn. I'm headed to Johnstone tomorrow to see if they have this.
  7. Thanks, Ron. I don't have a smart phone yet but...

    Thanks, Ron. I don't have a smart phone yet but will once I move out of the apprentice pay bracket. I currently organize my information on my laptop using a Microsoft Works file, and carry the laptop...
  8. Here's some answers to your questions: 1) Can...

    Here's some answers to your questions:

    1) Can you walk me through a typical day for you? I'm an apprentice, so I only recently began doing work on my own (mostly inspections right now). I have a...
  9. Replies
    34
    Views
    3,677

    Thanks. I'd really appreciate that.

    Thanks. I'd really appreciate that.
  10. Replies
    34
    Views
    3,677

    Trying to make a stubby gauge

    Hello everyone,

    I bought some parts to try and construct my own stubby gauges. After hooking it up to the system, refrigerant was leaking out of the middle part of the 1/4-1/4 union. I know this...
  11. Replies
    5
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    1,373

    I've heard about that a little. We don't ever...

    I've heard about that a little. We don't ever wear masks and have probably swallowed quite a bit of that gunk as it splashes back on our face.
  12. Replies
    12
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    1,245

    Well I wanted to do that to an intellipak about a...

    Well I wanted to do that to an intellipak about a week ago. Is it wrong that I now feel a little better after hearing this?
  13. Replies
    5
    Views
    1,373

    Stubborn build-up on cooling tower media

    Hello everyone,

    We occasionally clean cooling towers, which involves using a pressure washer (carefully) on the delicate tower media. Often we have to choose between either obliterating the media...
  14. Replies
    12
    Views
    1,245

    Mountain hunters nearby? (I'm assuming it's a...

    Mountain hunters nearby? (I'm assuming it's a rooftop unit)
  15. Thread: Motor FLA

    by HVAC_Austin
    Replies
    27
    Views
    2,161

    Thanks for the pdf, git-r-dun. Interesting read.

    Thanks for the pdf, git-r-dun. Interesting read.
  16. Thread: Motor FLA

    by HVAC_Austin
    Replies
    27
    Views
    2,161

    This was right. It turned out to be a dual...

    This was right. It turned out to be a dual voltage motor. The data plate said "4/2-2" but what they apparently meant was 4/2.2. Thanks for all the replies!
  17. Replies
    1
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    598

    Manifolded compressors

    I came across a Trane condensing unit today (model #TTA180C400GA) while doing a PM and was wondering what's the purpose with having a single circuit controlled by two compressors? The manual calls...
  18. Thread: Motor FLA

    by HVAC_Austin
    Replies
    27
    Views
    2,161

    That would make sense. Why does it seem like...

    That would make sense. Why does it seem like we're always running into things like this in this industry? On top of everything else, now we have to worry about manufacturers using dashes for periods....
  19. Thread: Motor FLA

    by HVAC_Austin
    Replies
    27
    Views
    2,161

    So can you break down what the numbers, slashes,...

    So can you break down what the numbers, slashes, and dashes mean? Thanks!
  20. Thread: Motor FLA

    by HVAC_Austin
    Replies
    27
    Views
    2,161

    It's a possibility. I think it was from a rooftop...

    It's a possibility. I think it was from a rooftop exhaust fan motor. I looked at so much equipment today, I don't remember for sure what motor had this FLA. I'm just going by what I wrote on my...
  21. Thread: Motor FLA

    by HVAC_Austin
    Replies
    27
    Views
    2,161

    Motor FLA

    Hello everyone,

    I came across an FLA listed like this on a motor today: 4/2-2 FLA
    I understand what FLA means, but haven't encountered it written this way before. What does it mean when written...
  22. Replies
    20
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    2,454

    I appreciate all of the comments on this issue. I...

    I appreciate all of the comments on this issue. I still haven't revisited the particular unit in question, but hope to next week. In the meantime I'll be looking closely at getting a decade box.
  23. Replies
    20
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    2,454

    Sorry, I don't have the model and serial on me....

    Sorry, I don't have the model and serial on me. But I will check to see that it's plugged into the board. I only recently began doing PMs on my own, so I'm fairly new at this. Why would the plug be...
  24. Replies
    20
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    2,454

    To tell you the truth, I don't remember. I looked...

    To tell you the truth, I don't remember. I looked at so many of these things today my head is still spinning. What would it mean if it were a Microtel?
  25. Replies
    20
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    2,454

    Trane RTU Test Mode

    Hello everyone,

    Earlier today I was trying to get a Trane RTU to start in test mode. Simple enough, just jump LTB 1 and LTB 2 and sit back and wait. The only problem is that it just got stuck in...
  26. I get the same response sometimes. Coworkers...

    I get the same response sometimes. Coworkers would often rather work with someone who is more experienced (unless it's something like demolition of an old unit). But I find the boss is perfectly...
  27. New apprentice: Work fast or take time to learn?

    Hello all,

    I've almost completed my first year as an apprentice with a commercial HVAC company. I have no prior experience, and absolutely LOVE the amount of things there are to learn in this...
  28. Ron, that's a great idea. Are you able to provide...

    Ron, that's a great idea. Are you able to provide any more details on how to make this (or pictures)? Hauling it up to the roof would be worth it when you have 20+ to do. (And my wife loves it when I...
  29. That's a good idea. It's easy to want to run...

    That's a good idea. It's easy to want to run everything at once when you have 20 other 2-stage RTUs waiting on you! Thanks, Ron.
  30. Package unit PM in low ambient conditions

    Hello everyone,

    When performing PMs on rooftop package units in low ambient conditions, it's often necessary to jump out the thermostat at the unit to get it to come on. I was always taught to go...
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