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  1. Replies
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    21,558

    What a detour... 11 pages, all kinds of topics...

    What a detour... 11 pages, all kinds of topics and no satisfaction. I want to be compensated for my time by the producer of this thread.... Oh well...

    Dan
  2. Replies
    14
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    1,437

    :worthless:

    :worthless:
  3. I don't see any getting rich with 22

    There are so many cheap R12 drop-ins that I can't justify buying one of those virgin jugs someone has been holding on to for all these years. Same thing will probably happen with 22. Unit goes flat...
  4. Replies
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    4,354

    I don't trust the Super Nova that we have in the...

    I don't trust the Super Nova that we have in the shop. I use a JB DVN 22. I'd rather my micron gauge error high, if it's going to error. Bluevac sounds tempting, but have have to buy most of the...
  5. Thread: Control Problem

    by derb
    Replies
    4
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    674

    Brand and model of the controllers will help....

    Brand and model of the controllers will help. Each manufacture has their own way of doing things. The individual controllers should be capable of running in stand alone mode. From the vague and...
  6. Replies
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    2,585

    I'm sure using a generic 10k will get you within...

    I'm sure using a generic 10k will get you within 3 or 4 deg, but then why bother with the thermistor in the first place? Making sure the thermistor matches the temperature-resistance map will get us...
  7. Replies
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    2,431

    Some leaks only appear when they system is hot,...

    Some leaks only appear when they system is hot, under pressure and vibrating.

    Best I've had recently is a string of units at this building. Most short on gas. All brazed with the cores in and...
  8. Replies
    36
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    2,585

    I want my SMAN to give me all the information on...

    I want my SMAN to give me all the information on one screen that my AK900 does. I want my AK900 to have clamps as great as my SMAN's. Since there is no fixing the display, I would love for someone to...
  9. Replies
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    I bought one last month, with a 23 lb of r409a,...

    I bought one last month, with a 23 lb of r409a, for $. I wouldn't pay for the high price for r12 and when I run out of r22 I'll buy whatever the "best" retro fit turns out to be. I like 12 and 22,...
  10. Replies
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    9,312

    How is it in your gauges? Do you use digital? ...

    How is it in your gauges? Do you use digital?

    Dan
  11. Thread: HVAC dew point

    by derb
    Replies
    6
    Views
    923

    Should be a whole section on it in whatever HVAC...

    Should be a whole section on it in whatever HVAC book you have. Being new to the industry I'd suggest "Modern Refrigeration", "Refrigeration & Air Conditioning Technology" or one of the other...
  12. Replies
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    1,238

    Some people have different was of dealing with...

    Some people have different was of dealing with transitions.
    Some do this:
    http://hvac-talk.com/vbb/picture.php?albumid=2772&pictureid=17241
    Better to do this:...
  13. Replies
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    1,238

    I was thinking about doing this same thing for my...

    I was thinking about doing this same thing for my personal system. The pressure drops for a coil range from .23 to .45. That is a huge restriction that wouldn't be tolorated in any heating only...
  14. Thread: Grease Fittings

    by derb
    Replies
    3
    Views
    539

    I call them "Zerks" as well. Sometimes I find...

    I call them "Zerks" as well. Sometimes I find the fittings are defective and other times I find that the reservior they are feeding is either blocked up or full. The fittings are universial,...
  15. Thread: testo hook broke

    by derb
    Replies
    14
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    1,488

    Funny, both my SMAN3 and AK900 have taken 4 foot...

    Funny, both my SMAN3 and AK900 have taken 4 foot falls off condensers. I don't think it left any discernible marks. I'm to clumsy for a Testo.

    Dan
  16. Replies
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    3,396

    Come back and let us know what they said. Dan

    Come back and let us know what they said.

    Dan
  17. Replies
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    I know his post is old, but I just wanted to...

    I know his post is old, but I just wanted to thank Osiyo for explaining all that. You helped me form an understanding of GPL and programming in general. I work for a facility that has many makes and...
  18. Replies
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    4,929

    Thermistors

    The sensors are my biggest disappointment with DigiCool. With my AK the High and low are always within 1.5 psig of each other, but the temp sensors!! Some times I just grab a pair of my self...
  19. Replies
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    1,146

    I'm still on metasys 4.1, but when I set up my...

    I'm still on metasys 4.1, but when I set up my alarm and link it to a reference set point and then set a high and low differential warning. Did they change this with the new version?

    Dan
  20. Replies
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    3,128

    :payattention: Last week I had a contactor...

    :payattention:

    Last week I had a contactor with a carbon trails on it between the legs. Unit blew three 60 amp fuses and tripped its MCC Breaker. With my old 902 I wouldn't have been able to see...
  21. Replies
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    6,155

    No where in the literature did I see anything...

    No where in the literature did I see anything about venting moisture between stages. I do see references to a hydrophobic pump oil, a debris catch tube, and a quick change oil reservoir. The Appion...
  22. Thread: A/C Leak Freeze

    by derb
    Replies
    44
    Views
    11,719

    I'm not using my manifold in the recovery...

    I'm not using my manifold in the recovery process. My point was concern for my recovery machine. The detection kits I've seen are for automotive applications, r12 and r134a, and have automotive style...
  23. Thread: AHU Coil cleaning

    by derb
    Replies
    9
    Views
    2,571

    We had a coil like this and spent tons of time...

    We had a coil like this and spent tons of time with a pressure washer and evap cleaner. Even hired a company. Just couldn't get it clean. Turns out it take more than just some dirt and dust to plug a...
  24. Thread: A/C Leak Freeze

    by derb
    Replies
    44
    Views
    11,719

    When I hook up to a system, my high side hose...

    When I hook up to a system, my high side hose fills with liquid refrigerant. When I disconnect I have either a low loss fitting or a ball valve on the high side hose. I disconnect the high side first...
  25. Thread: A/C Leak Freeze

    by derb
    Replies
    44
    Views
    11,719

    My question is in reguard to leak sealant, not uv...

    My question is in reguard to leak sealant, not uv die. Different products all together.

    Dan
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