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  1. But also keeps from having to open up the system....

    But also keeps from having to open up the system. Kind of a "weigh the options" situation. I'd rather put the time delay in tan open up the system of it solves the problem.

    Sent from my VS990...
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    Was using the fan cycle control as the switch to...

    Was using the fan cycle control as the switch to control the condensing unit off the CO2 tank pressure.

    Sent from my VS990 using Tapatalk
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    Know the connection size to the tank? If I...

    Know the connection size to the tank?

    If I remember correctly, you can use a standard pressure control, I think I used a fan cycle control because of thrbhigj pressures. The only time you have...
  4. Lol. No I'm just realizing I'm over analyzing...

    Lol. No I'm just realizing I'm over analyzing things... I saw 2 sentences and wanted more info... Y'all saw 2 sentences and started diagnosis.

    Sent from my VS990 using Tapatalk
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    If it's 5/8 suction, I'd go with 12,000 btu, plan...

    If it's 5/8 suction, I'd go with 12,000 btu, plan on a -20 evap temp. Like BBeerme said, it should be cycling on tank pressure. Are you planning on converting it?

    Sent from my VS990 using...
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    I do remember working on a 2t tank that had a 1/2...

    I do remember working on a 2t tank that had a 1/2 or 3/4 compressor in the doghouse. I was changing the valveplates on it, and the pressure relief was right above my head.... And this one wasn't a...
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    That's why I was initially thinking 30,000. But...

    That's why I was initially thinking 30,000. But for some reason that seems excessive for a 4t tank.

    Sent from my VS990 using Tapatalk
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    Bah! I was way off... If you have a 5/8 suction...

    Bah! I was way off... If you have a 5/8 suction like I think you do.... 12,000 btu should take care of it.

    Sent from my VS990 using Tapatalk
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    Oh, how well insulated? Sent from my VS990...

    Oh, how well insulated?

    Sent from my VS990 using Tapatalk
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    Ok. Now, keep in mind the refrig is not meant to...

    Ok. Now, keep in mind the refrig is not meant to pull down, but maintain. Seems 30,000btu, but something tells me that may be excessive for a 4t tank. I'm leaning more towards 18-24. Let me do some...
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    Ok It was -20 then. Static storage? Sent...

    Ok It was -20 then. Static storage?

    Sent from my VS990 using Tapatalk
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    Tank outside? 4 tons of CO2, I am trying to...

    Tank outside?

    4 tons of CO2, I am trying to remember the evap temps on those, 20 degrees?

    Sent from my VS990 using Tapatalk
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    Got numbers off the txv? Sent from my VS990...

    Got numbers off the txv?

    Sent from my VS990 using Tapatalk
  14. Y'all read a lot deeper between the lines than I...

    Y'all read a lot deeper between the lines than I did. Lol. I wasn't sure if the solenoid was closing multiple times, compressor was cycling mutiple times, or what.

    And only on hot days? What's...
  15. *scratches my head* Sent from my VS990 using...

    *scratches my head*

    Sent from my VS990 using Tapatalk
  16. I have been asked that before. Most coolers...

    I have been asked that before.

    Most coolers have an off cycle defrost, but even at that, can still freeze.

    The same thing is happening in both situations. A refrigeration circuit is the...
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    Still... Sent from my VS990 using Tapatalk

    Still...

    Sent from my VS990 using Tapatalk
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    100' 7/8 suction line.... I knew someone would...

    100' 7/8 suction line.... I knew someone would catch something. That is a hell of a pressure drop.

    Sent from my VS990 using Tapatalk
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    I'm just saying the rise in liquid temp added to...

    I'm just saying the rise in liquid temp added to the reduction in superheat MAY hurt you.

    Sent from my VS990 using Tapatalk
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    Seems to me, if I remember correctly, the...

    Seems to me, if I remember correctly, the superheat will directly effect the btu capacity of the evaporator. That combined with the higher condensing temps... May hurt.

    Waiting to see myself...
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    From Sporlan Bulletin 10-11 "Valve Location:...

    From Sporlan Bulletin 10-11

    "Valve Location: TEVs may be mounted in any position, but they should be installed as close to the evaporator as possible. If a refrigerant distributor is used with the...
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    This is what I am basing my opinions on as well,...

    This is what I am basing my opinions on as well, but in the supermarket setting we deal with a lot more 100% runtimes on equipment than a self contained and we generally have internally cleaner...
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    I could see a remote probability of this being a...

    I could see a remote probability of this being a case with lower temp situations and the viscosity dropping on the oil causing slow response of the power element having to work against the oil, but...
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    That was started in '08! Sent from my VS990...

    That was started in '08!

    Sent from my VS990 using Tapatalk
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    I'd say MO99 but the cost isn't far off from 22...

    I'd say MO99 but the cost isn't far off from 22 at this point and more difficult to get.

    Sent from my VS990 using Tapatalk
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    Has it got mineral oil still in it? Sent from...

    Has it got mineral oil still in it?

    Sent from my VS990 using Tapatalk
  27. Was system properly evacuated, has receiver level...

    Was system properly evacuated, has receiver level been checked per manual? Its been a while since I've worked on a Vogt but I know the refrigerant level is critical and non condensables can really...
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    Thanks to all the soldiers, my late father and...

    Thanks to all the soldiers, my late father and great uncle, And my grandfather. I wouldn't be where I am today without any of you!

    Sent from my VS990 using Tapatalk
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    Now that I like... Sent from my VS990 using...

    Now that I like...

    Sent from my VS990 using Tapatalk
  30. I just realized how tired I am... it was said...

    I just realized how tired I am... it was said hermetic... I was thinking semi hermetic...


    Time to stop thinking now.


    Sent from my rooted Verizon Galaxy Note 4 on Tapatalk
  31. Low temp 22 have em on top of the compressors. ...

    Low temp 22 have em on top of the compressors.

    Sent from my rooted Verizon Galaxy Note 4 on Tapatalk
  32. I thought so too. Sent from my rooted Verizon...

    I thought so too.

    Sent from my rooted Verizon Galaxy Note 4 on Tapatalk
  33. A lot of racks have oil coolers on the individual...

    A lot of racks have oil coolers on the individual compressors. Screw racks will have heaters and/or coolers to maintain viscosity.

    Sent from my rooted Verizon Galaxy Note 4 on Tapatalk
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    I'd bypass the compressor on and watch the net...

    I'd bypass the compressor on and watch the net oil over an hour or more. That will show you if it's bearings if you see it drop.

    Sent from my rooted Verizon Galaxy Note 4 on Tapatalk
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    Discharge is OK. What bothers me is the way the...

    Discharge is OK. What bothers me is the way the net oil drops. Sounds like bearings to me. How long does it take to drop from 26 net oil to cut out?

    Sent from my rooted Verizon Galaxy Note 4...
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    It does not take much space for 460 to jump. ...

    It does not take much space for 460 to jump. There are technical terms for it but it's the potential of energy of the voltage

    Sent from my rooted Verizon Galaxy Note 4 on Tapatalk
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    Just. Wow. Sent from my SM-N910V using...

    Just. Wow.

    Sent from my SM-N910V using Tapatalk
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    Yeah, have also experienced that same motor blow...

    Yeah, have also experienced that same motor blow a fireball out of the shaft end due to a short. 460 volts is wicked stuff jaybee, it can do amazing things.

    The strangest was on a Copeland...
  39. I've used that method before on supermarket racks...

    I've used that method before on supermarket racks "we don't know how that switch keeps getting turned off"

    Sent from my SM-N910V using Tapatalk
  40. I'm sure if you look you can find an hour meter...

    I'm sure if you look you can find an hour meter that will also give you duration of open time to go with it.

    Sent from my SM-N910V using Tapatalk
  41. Sorry. Grainger part# 20XG41 Pic wouldn't...

    Sorry.

    Grainger part# 20XG41

    Pic wouldn't upload from phone.

    Sent from my SM-N910V using Tapatalk
  42. Wire this to a magnetic door switch.... Sent...

    Wire this to a magnetic door switch....

    Sent from my SM-N910V using Tapatalk
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    Actually looks like there is ice in the...

    Actually looks like there is ice in the electrical junction box underneath the vacuum break... or am I seeing things?

    Sent from my SM-N910V using Tapatalk
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    Ooo. Good one. Had a few in a large walk in...

    Ooo. Good one. Had a few in a large walk in that had pieces of foam insulation in the flaps that caused the same problem. Forgot about that.

    Sent from my SM-N910V using Tapatalk
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    Too small. Sent from my SM-N910V using...

    Too small.

    Sent from my SM-N910V using Tapatalk
  46. Replies
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    Had a med chain store that had a rack that was...

    Had a med chain store that had a rack that was 404, blew a charge. All they had around was 507. They put it in, charged to full capacity, been running for years no issues. They wrote it up as an...
  47. Then waterlogged insulation i get... but still...

    Then waterlogged insulation i get... but still having a block of ice? What did they do... pull it, paint it, transport and stick it back in? [emoji15]

    Sent from my SM-N910V using Tapatalk
  48. As long as they are done right. All depends on...

    As long as they are done right. All depends on age, etc. I've had stores that were 100% refurbished, racks and all... just new copper in between. Other than having to correct some installation...
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    And when you call them and they tell you "it's...

    And when you call them and they tell you "it's been like that for a few days but I just got an alarm"

    Sent from my SM-N910V using Tapatalk
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    Supermarkets... it's always "can't you do that...

    Supermarkets... it's always "can't you do that after hours?" Bahahaha. And that 3am wobble is a killer.

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