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Type: Posts; User: kerndt

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  1. Replies
    10
    Views
    808

    You guys must learn how to measure voltage (to...

    You guys must learn how to measure voltage (to any type of device). Always measure voltage with load connected.

    Measuring ac voltage to ground will always make you chase your tail.

    If you...
  2. Thread: Revco -80

    by kerndt
    Replies
    9
    Views
    959

    Most definitely not removable. I can’t believe...

    Most definitely not removable. I can’t believe it’s leaking there!
  3. Thread: Defrost Control

    by kerndt
    Replies
    10
    Views
    1,053

    I think your looking for a smart defrost...

    I think your looking for a smart defrost controller. The dixell temperature controller uses incoming air temperature and evaporator coil temperature to activate the defrost cycle, fully programable...
  4. Thread: superior drier

    by kerndt
    Replies
    5
    Views
    1,012

    Superior has been bought out by I believe by Alco...

    Superior has been bought out by I believe by Alco or Emerson? I personally love the brass housing, it doesn't rust.
  5. Replies
    13
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    1,491

    15 years ago I did this to my home a/c system. I...

    15 years ago I did this to my home a/c system. I installed a 2 ton water condenser first and then the air cooled condenser for maximum use of the water condenser. The water valve is set at 210 psig...
  6. Replies
    12
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    1,894

    I mostly work on lab equipment, Revco, Sanyo,...

    I mostly work on lab equipment, Revco, Sanyo, Forma etc... These units operate at a continuous ultra low temperature, where oil return is a huge issue. We use Pentane now mostly in Sanyo products...
  7. Replies
    12
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    1,894

    most of the thermotrons ive worked on dont use an...

    most of the thermotrons ive worked on dont use an additive. They are typically not used for continous ultra low temperatures and oil return has not been a problem. But if any unit calls for an...
  8. Replies
    12
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    1,894

    Thermotron is very proprietary, if youíre not one...

    Thermotron is very proprietary, if youíre not one of their contractors, they may be tough to deal with. Sub cooling should be like every commercial system. Where did you get the valves and are they...
  9. Replies
    12
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    1,894

    Curdogg, Curious what was the complaint before...

    Curdogg,
    Curious what was the complaint before you started working on this chamber, and what did you find on your initial inspection?

    Rusted TXV on these units is pretty common, but that in its...
  10. Thread: Lights

    by kerndt
    Replies
    7
    Views
    733

    I had one of those testers, and took it back. The...

    I had one of those testers, and took it back. The tester will light any flourescent blub that has not lost its gas, if the connectors or heaters at the end of blubs were bad the tester would still...
  11. Replies
    15
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    1,185

    Is the drain tube heater power continously? Is...

    Is the drain tube heater power continously? Is the heater still good, recheck, with an ohm meter that can measure resistance at least too 10K ohm. I like to run the heaters inside the drain tube...
  12. check out this thread..........it answers your...

    check out this thread..........it answers your question

    http://www.hvac-talk.com/vbb/showthread.php?t=116028&highlight=kerndt+receiver
  13. Replies
    15
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    1,433

    Check out the dixell controls, they have controls...

    Check out the dixell controls, they have controls with alarms for high and low temperature with a built in buzzer and external contacts, plus have remote displays options. I think the XR170 control...
  14. Replies
    18
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    1,716

    We have serviced many types of saltwater...

    We have serviced many types of saltwater aquariums in the Evolution and Ecology Department at U.C. Davis. Most of these units have a titanium heat exchanger and some use plastic coated copper coils...
  15. Replies
    11
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    1,414

    The difference between the 701 and the 1560, one...

    The difference between the 701 and the 1560, one cuts in at 41 degrees and the other 39 degrees, also their cut out side has a different range. True offers a relay kit to take the stress off these...
  16. Replies
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    2,913

    787 great post, i agree, if polycold is a mix for...

    787 great post, i agree, if polycold is a mix for an autocasde system then it wouldn't work. i can't believe how misleading people can be. have you ever used propylene?, it has a boiling point of -47...
  17. Replies
    26
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    2,913

    Hey guys, I have looked at this thread over the...

    Hey guys, I have looked at this thread over the past weeks, and I am not familiar with the "Polycold" refrigerant. I realize that they are probably a manufacture, but have you used their refrigerant...
  18. Replies
    15
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    1,625

    If the system is a critically charged system...

    If the system is a critically charged system i.e.: small cap tube system, then it should not have a receiver. The critical charge system requires the ability to add refrigerant to adjust superheat...
  19. Replies
    4
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    818

    If themotron did not list pentane or propane on...

    If themotron did not list pentane or propane on the unit, than you probably donít need it. R23 is an HFC refrigerant and is miscible with POE oils, adding pentane or propane should not be necessary....
  20. Replies
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    896

    This could be a great challenge for you, and I...

    This could be a great challenge for you, and I like your attitude "its just refrigeration". I think that was similar to my attitude 24 years ago.

    There is factory training and certification...
  21. Replies
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    8,925

    This was an old thread... What is a PTC?...What...

    This was an old thread... What is a PTC?...What type of refrigeration experence have you had prior to teaching?
  22. Replies
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    2,485

    I purchase them as an OEM, in larger quantities....

    I purchase them as an OEM, in larger quantities. But Iím willing to hook you guys up if you can find a local distributor.

    Yes they seem too good to be true, but they are that good.

    These units...
  23. Replies
    23
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    2,485

    Bago, a total solution would be a XR160C control...

    Bago, a total solution would be a XR160C control from Dixel. http://www.weissinstruments.com/dixell/index.htm

    This control will provide an air sensor for temperature control, a evaporator coil...
  24. Replies
    15
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    1,268

    Good Morning boys! I had one of these where...

    Good Morning boys! I had one of these where simply the ice would not drop of the evaporator plate until it was almost completely melted. It made a full plate of ice and the harvest cycle heat was...
  25. Gee wis guys, I think your chasing your tail on...

    Gee wis guys, I think your chasing your tail on this one.

    500 # head pressure - Then he bled off one once, and the pressure dropped to 115 #, what he bled OFF was AIR.

    I had a similar problem...
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