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  1. Just setup the controller to maintain FHP at a...

    Just setup the controller to maintain FHP at a 20F TD.

    Also, since you have EEV you can go lower than 70F SCT.
  2. I have tools from $1-$10,000 All important &...

    I have tools from $1-$10,000

    All important & fundamental to me doing a good job.
  3. Just an FYI. There's no difference in...

    Just an FYI.

    There's no difference in component location when dealing with high temp, medium temp, or low temp applications.
  4. I think he means like this. I have been around...

    I think he means like this.

    I have been around refrigeration since I was born. There's always been at least one in my house & I usually walk by several other refrigerators throughout my day.
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    ME6

    ME6
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    If you write a letter to the refrigerant...

    If you write a letter to the refrigerant manufacture requesting a T/P chart. They should be able to mail you a T/P chart.
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    I think the best way for you to add the correct...

    I think the best way for you to add the correct amount of R404 is to.......

    Call a company out who knows how to work on refrigerators.
  8. Replies
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    YOU LOOK AT THE SAME THING YOU DO ON R22 AND...

    YOU LOOK AT THE SAME THING YOU DO ON R22 AND R410!!!!!!!!!

    FREEZON IS FREEZON!!!!!!!!!!!
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    why are you resistant to use an electronic...

    why are you resistant to use an electronic detector?
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    When I order it, I'll take some pictures & post.

    When I order it, I'll take some pictures & post.
  11. one per coil, but don't put a trap in the freezer

    one per coil, but don't put a trap in the freezer
  12. Replies
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    They are adjustable settings. And you order it...

    They are adjustable settings.

    And you order it with the 7/16”-20 UNF female, Schrader depressor connection.
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    Thanks kevincompass & pherman those will do just...

    Thanks kevincompass & pherman those will do just fine.
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    Ahhh - ha! Way to go. Pipe plugs are always fun.

    Ahhh - ha! Way to go. Pipe plugs are always fun.
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    1,318

    The specific application that is going to be an...

    The specific application that is going to be an issue is low-temp R-22 on a Rack.

    It's operating setpoint is 8 PSI.

    There are times during normal operation the suction pressure will dip below 8...
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    Encapsuplated low pressure controls

    Anyone know of an encapsulated low pressure control that cuts out lower than 5 PSI?

    The lowest settings I can find is cut out/cut in 5/20 PSI.

    The only option I can find is going to the...
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    Since it's isolated down to one case. Maybe...

    Since it's isolated down to one case. Maybe you've got a pipe plug bouncing around inside the pipes of the 4 door.
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    leaving the bypass time unset leaves the manual...

    leaving the bypass time unset leaves the manual bypass value until it is manually put back to no bypass.
  19. Replies
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    1,287

    Sounds like it's time to just start changing some...

    Sounds like it's time to just start changing some parts on this thing!
  20. anyone know WHY manufactures recommend a 20*...

    anyone know WHY manufactures recommend a 20* MINIMUM?
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    Sounds like there is a large air heat reclaim...

    Sounds like there is a large air heat reclaim coil.

    Ideally, the reclaim coil will just de-superheat the refrigerant gas going through it.

    But in real life, the reclaim coil will also begin to...
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    To answer you, I'll give you a multiple choice. ...

    To answer you, I'll give you a multiple choice.

    A) Yes
    B) No
  23. Replies
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    1,369

    You need to have the Rack filter/drier's...

    You need to have the Rack filter/drier's replaced, let it run 48 hours, then replace them again. Use high water capacity cores.

    Then of course, figure out where this moisture came from & how it...
  24. The problem is, you did some funky test in a lab....

    The problem is, you did some funky test in a lab.

    Do a real life experiment with a torch & pipe.

    One with CO2 & one with N2.
  25. Replies
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    why is a legitimate method used by major OEM's of...

    why is a legitimate method used by major OEM's of keeping liquid pressure up during an off cycle considered a scab route?
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    I guess just throw the LPC away, wire nut it &...

    I guess just throw the LPC away, wire nut it & install a t-stat/sol with headmaster...is this what we're getting at here?
  27. Replies
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    This is the control I've seen on HeatCraft units....

    This is the control I've seen on HeatCraft units.
    ...
  28. Replies
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    2,213

    Just curious, how would you intend to restart the...

    Just curious, how would you intend to restart the system automatically after a pump-down on a -20* night?
  29. Replies
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    Here is a leading manufacture explaining it on...

    Here is a leading manufacture explaining it on Pg.2

    https://opi.emersonclimate.com/CPID/GRAPHICS/Types/AEB/ae1234.pdf

    & here is Bohn on Pg.4 listing a heated/insulated receiver with TD relay as...
  30. Replies
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    2,213

    The problem isn't maintaining a minimum head...

    The problem isn't maintaining a minimum head pressure while running, the problem is starting after an off cycle.

    You could install a time-delay which bypasses the LPC on start up & allows the...
  31. Replies
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    3,885

    one of the same things about HVAC & Refrigeration...

    one of the same things about HVAC & Refrigeration is........

    you take the same amount of tools out of the truck.
  32. Replies
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    get in where you fit in. :grin2:

    get in where you fit in. :grin2:
  33. Replies
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    math error

    math error
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    For those who want to see the video mentioned....

    For those who want to see the video mentioned. Here ya go! :cheers:

    He makes it clear that this is a demonstration of solid material removal, not acid, not moisture.
    ...
  35. Why is your leak PPM set so low? Raise you...

    Why is your leak PPM set so low?

    Raise you PPM to avoid nuisance alarms.

    Industry standard PPM for R22 Leak/Spill/Evac is 100/300/500
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    I dunno what it is, I'm just a dumb tech. ...

    I dunno what it is, I'm just a dumb tech.

    You'd get a good answer with an oil sample sent in for analysis by a scientist.
  37. BOOM!

    BOOM!
  38. You probably have a leak inside the HGM. ...

    You probably have a leak inside the HGM.

    http://www.bacharach-inc.com/PDF/Instructions/HGM300.RDM800%20MAINT.TECH%20SUPPORT%203%202%2009.pdf
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    I just replaced a EEPR in a dual temp case the...

    I just replaced a EEPR in a dual temp case the other day.

    There was a Sporlan SDR-3 in the case, the circuit was set for medium temperature mode & the PID would call for 0% EEPR positioning once...
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    because it is the closest matching R22...

    because it is the closest matching R22 replacement. even gaining capacity. the others all lose capacity.

    We have 2 main customers doing retrofits right now from 22 to 407F.

    I've done 8...
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    http://www.google.com/imgres?client=firefox-a&hs=m...

    http://www.google.com/imgres?client=firefox-a&hs=m91&sa=X&rls=org.mozilla:en-US:official&biw=1600&bih=807&tbm=isch&tbnid=ejBjDa379vtDPM:&imgrefurl=http://www.itsokaytobesmart.com/post/20011864654/take...
  42. If you are working in supermarkets...or anywhere...

    If you are working in supermarkets...or anywhere really, but supermarkets are my specialty :grin2:

    There is possibly thousands and THOUSANDS of feet of pipe runs and case line ups.

    If you...
  43. WTFFFFFFFFFFFF kinda electronic leak detector do...

    WTFFFFFFFFFFFF kinda electronic leak detector do you use............. a potato?
  44. Replies
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    One compressor should be running per suction...

    One compressor should be running per suction group at all times, or at least, more often than not.

    So I'd take your smallest MT compressor & smallest LT compressor. Ger their model numbers and...
  45. Replies
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    7,540

    Sizing a helical style is easy peezy. Take...

    Sizing a helical style is easy peezy.

    Take your SST and your MINIMUM compressor DCFM

    botta bing botta boom.

    And I have seen ONE failed helical style separator.

    It had me wondering how...
  46. while being kicked in the nuts.

    while being kicked in the nuts.
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    wtfffffffff

    wtfffffffff
  48. Replies
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    I have seen one, or two cooler boxes with 2...

    I have seen one, or two cooler boxes with 2 evaporators with one evaporator having a plugged TEV screen, or bad power element. And half of the box was cold, the other half was warm. Not an even...
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    47 PSIG R-404 is 13* That is too low. since...

    47 PSIG R-404 is 13*

    That is too low.

    since this is new.

    you most likely have a sizing issue.
  50. Replies
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    WHAT IS YOUR SUCTION PRESSURE? Here is what, I...

    WHAT IS YOUR SUCTION PRESSURE?

    Here is what, I believe is going on.

    You have 1 condensing unit connected to (2) evaporators, in the same cooler

    Each evaporator is controlled by its own...
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