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  1. Thread: Leak check

    by Jack8080
    Replies
    39
    Views
    2,361

    Well my apologies homeandmarine but im not really...

    Well my apologies homeandmarine but im not really familiar with the h-10 or the zx-1. I would think they are leak testers. Would these be electronic or ultrasonic, and why would you prefer the older...
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    Now I'm wondering what the NHL would say to that....

    Now I'm wondering what the NHL would say to that. :grin2:
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    DuPont system?

    So I've read this section 608 book of the Clean Air Act and feel good about passing this thing almost flawlessly. One obstacle still remains.
    This Dupont refrigerant numbering system does not make...
  4. It sucks to mess up. It feels better when you see...

    It sucks to mess up. It feels better when you see the boss mess up in front of you.

    A few years back. We had an issue with proper airflow on a rooftop unit. We got a new blower motor that was...
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    Well here's a slightly different scenario. Would...

    Well here's a slightly different scenario. Would you rather hire a guy with a certificate from an accredited college in HVAC/R or a guy with NATE certification? This is also assuming they have...
  6. Thread: Leak check

    by Jack8080
    Replies
    39
    Views
    2,361

    Yeah I've had many professors in this school that...

    Yeah I've had many professors in this school that were really good with explaining what the material and even went above and beyond their call of duty. However, since the announcement that the...
  7. Thread: Leak check

    by Jack8080
    Replies
    39
    Views
    2,361

    Homeandmarine all I was asking about is standing...

    Homeandmarine all I was asking about is standing leak checks. As in after you find and repair a leak you should pump the system full of nitrogen and let it stand with the charge for a while to see...
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    Roof-top dampers

    So last year I helped install several York roof top units. These specific models were the predator line. My boss had me install resistors for the controls for the dampers as there were issues with...
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    If anyone does try this I'm wondering how deep a...

    If anyone does try this I'm wondering how deep a vacuum you would pull. Would you use a micron gage to tell? If so does pulling a deeper vacuum effect the taste? This could be experimented with in...
  10. Thread: Leak check

    by Jack8080
    Replies
    39
    Views
    2,361

    Thanks icoolfla, yeah i've been attending a local...

    Thanks icoolfla, yeah i've been attending a local community college for hvac for the last 2 years. However, because of work and other priorities it's only been 1-2 classes at a time. Now they're...
  11. Thread: evap plating

    by Jack8080
    Replies
    14
    Views
    1,476

    @meerkat yeah its a manitowoc @lovecoldair I...

    @meerkat yeah its a manitowoc
    @lovecoldair I don't know how safe it is to be drinking that ice but I wasn't able to taste the difference, when I asked our the senior mechanic he just rolled his...
  12. Thread: Leak check

    by Jack8080
    Replies
    39
    Views
    2,361

    @baloo I'm not on this site to get life advice. I...

    @baloo I'm not on this site to get life advice. I got some good answers from a few of the guys so if you have nothing important to add that relates to the topic then refrain and don't waste peoples...
  13. Thread: evap plating

    by Jack8080
    Replies
    14
    Views
    1,476

    evap plating

    Little while back I had an ice machine that would produce ice inconsistently. One of my bosses came in and we replaced the TXV, the ice thickness sensor, and the hot gas bypass solenoid. The guy was...
  14. Thread: Leak check

    by Jack8080
    Replies
    39
    Views
    2,361

    Thanks to all that responded. With different...

    Thanks to all that responded. With different systems and different situations there of course are different tests that need to be performed to find leaks. The discussion that stemed from the question...
  15. Thread: Leak check

    by Jack8080
    Replies
    39
    Views
    2,361

    Cool whip, yeah I'm trying to do that. Every...

    Cool whip, yeah I'm trying to do that. Every little bit helps.
  16. Thread: Leak check

    by Jack8080
    Replies
    39
    Views
    2,361

    Well I never said i'm trying this on my own. I'm...

    Well I never said i'm trying this on my own. I'm actually attending school for hvac right now. My current professor is not being very helpful so I was hoping that someone on here might clarify this a...
  17. Thread: Leak check

    by Jack8080
    Replies
    39
    Views
    2,361

    Leak check

    Hey guys just a general question about leak checking. So far i've read that the best leak checking method is a standing pressure check with nitrogen and a "hotshot" of r-22. Question is when doing...
  18. Sticky: New to forum

    Hi all, my name's Jack. I've worked as a mechanical operations supervisor for the last 5 years. A lot of this included maintenance and repair of A/C rooftop units, restaurant refrigeration, as well...
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