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  1. Replies
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    you should check 407A on the testo 550, now ...

    you should check 407A on the testo 550, now that's wrong.
  2. Most stable leak detector sensor technology?

    Heated diode , corona discharge or Infrared?
    I thought Infrared is the most stable.
    My ZX rarely gives me any false alarms but I dont think is very sensitive. Is my everyday detector though.
    I...
  3. Replies
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    3,686

    I never seen a compressor with the kind of...

    I never seen a compressor with the kind of readings that the OP presented here give a 50F superheat. I have worked on these before also. I mean, to me, nothing jumps out that would explain a 50F...
  4. Replies
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    3,686

    Had a Tyler frozen food 15 door lineup at a...

    Had a Tyler frozen food 15 door lineup at a chain that likes dogs, wouldnt drop below 0, tied to a Russell condensing unit.on the roof. Superheat 6 to 10 on all cases , acceptable. Suction wouldnt...
  5. Replies
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    3,686

    In a case like that the air infiltration from the...

    In a case like that the air infiltration from the condensing unit through the bottom of the case will probably be pulled in through the evaporator first, which will cause someone to add more...
  6. Replies
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    It could be very well a weak pump, just trying...

    It could be very well a weak pump, just trying to understand the connection between the compressor performance and the superheat.
    The compressor suction, discharge and amperage seem inline with...
  7. Replies
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    3,686

    at 18# suction and 240# discharge , pumping down...

    at 18# suction and 240# discharge , pumping down to vacuum and holding, sounds like a good pump...
    is it possible the case has air infiltration from the condensing unit, does the drain over the...
  8. Replies
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    3,686

    According to Heritage Parts the OEM TXV for this...

    According to Heritage Parts the OEM TXV for this case is the 1/4 ton, but they could be wrong. The BQ AA cartridge, yellow, will go up to 1/3 ton.
    Another thing could be, that the CROT is adjusted...
  9. Replies
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    3,686

    the older , R22 version of this case used to be...

    the older , R22 version of this case used to be 1/2 ton internal Alco valve, but the coil was also bigger ,
    don't remember the compressor hp though.
  10. Replies
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    3,686

    hussmann rates the case as 4280btu@-30evap , 110F...

    hussmann rates the case as 4280btu@-30evap , 110F condensing temp,with 1hp compressor.
    So it is probably closer to 5000btu at-20F evap and 75F condensing temp.
  11. Replies
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    3,686

    12#, or even 16# suction is too low for a case...

    12#, or even 16# suction is too low for a case out of temp. are all the capillary lines
    of the distributor frosted?
  12. Replies
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    3,686

    Was the case reaching setpoint before the OEM...

    Was the case reaching setpoint before the OEM control going bad?
  13. Replies
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    3,686

    Are checking suction pressure and superheat at...

    Are checking suction pressure and superheat at the evaporator or the compressor?
  14. Replies
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    1,208

    Also check for steaming during defrost, no...

    Also check for steaming during defrost, no termination.
  15. Thread: Uei Hub 6?

    by gentian
    Replies
    45
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    6,413

    Is it like Appion where you have to plug in the...

    Is it like Appion where you have to plug in the temp clamps on the pressure probes?
    It looks like it was designed by a third party, a company in USA.
    It looks like everybody is making these...
  16. is it the heated diode or the infrared? Thanks!

    is it the heated diode or the infrared?
    Thanks!
  17. Replies
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    2,003

    that's where they leak 90% of the time.

    that's where they leak 90% of the time.
  18. Replies
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    2,699

    these things work great:...

    these things work great:
    https://www.flaretite.com/flaretite-seal
  19. Replies
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    3,252

    also, if the drain pan heater is out of place and...

    also, if the drain pan heater is out of place and starting to snake and coil up where is not touching the pan anymore, it will get very very hot during defrost and water dripping from the coil...
  20. CPS Products Acquires AAB Smart Tools, LLC

    http://www.prnewswire.com/news-releases/cps-products-acquires-aab-smart-tools-llc-300368866.html
  21. Replies
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    low on gas or bad cool gas valve especially if...

    low on gas or bad cool gas valve especially if they have those stupid Danfoss valves,assuming the evap is clean, imho.
  22. Replies
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    3,530

    Had the sc240 last year that would give me...

    Had the sc240 last year that would give me erratic readings once the battery level would drop halfway on the display indicator, change to a fresh battery and readings back to normal.
    Ended up...
  23. Greenlee DM-510A...

    Greenlee DM-510A
    http://www.greenlee.com/products/DMM%2540cTRMS%2540cAC%2540FDC%2540cCAP%2540cTEMP(DM%2540d510A).html?product_id=17752

    Best bang for the buck in my opinion.
    Limited Lifetime...
  24. Might be a Humidity controll where they route the...

    Might be a Humidity controll where they route the hot gas discharge to a reheat coil on the back side of the evaporator then to the condenser then to the evaporator.
  25. I believe Hussmann was doing something similar...

    I believe Hussmann was doing something similar for a while on their Proto racks with Krack microchannel condensers on a certain food chain.
  26. Thread: manual reset

    by gentian
    Replies
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    1,076

    I have never seen them higher than 400 on...

    I have never seen them higher than 400 on 404a.[/QUOTE]
    the high pressure switch that is
  27. Thread: manual reset

    by gentian
    Replies
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    1,076

    u need to look at your receiver pressure relief...

    u need to look at your receiver pressure relief valve or fusible plug and go lower than what they are.
    I have never seen them higher than 400 on 404a.
  28. Replies
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    those liquid injection solenoids energise...

    those liquid injection solenoids energise everytime compressor runs.
  29. Replies
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    +1 on the CPS 6 CFM. The one I have is dual...

    +1 on the CPS 6 CFM. The one I have is dual voltage. Is lighter than a comparable JB or Yellow Jacket and cheaper too.
    I don"t use manifolds for vaccum, 2 3/8 hoses, a yellow jacket vacuum tree and...
  30. Thread: TXV WRENCH

    by gentian
    Replies
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    1,821

    yellow jacket makes one....

    yellow jacket makes one.
    http://www.testequipmentdepot.com/products.htm?item=60617&ref=gbase&gclid=CNrb0Me54csCFQkfhgodu0YL1A
  31. Best thing to do is install a compact suction...

    Best thing to do is install a compact suction drier on the suction line between reversing valve and compressor. Sporlan makes the ones that look like a hockey puck,
    C-144-S-TT-HH, I think they go...
  32. Replies
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    I have used sporlan solenoids with no problems...

    I have used sporlan solenoids with no problems when replacing those stupid Danfoss Cool gas valves, with no issues so far. Sporlan has a chart with all hot gas capacities for their valves .
    Last...
  33. Replies
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    I prefer the subcooler with 1 Txv only and Epr,...

    I prefer the subcooler with 1 Txv only and Epr, better control, simpler.
  34. I thought the Float lead circuit should be the...

    I thought the Float lead circuit should be the the circuit that runs the lowest temp on that rack. Maybe you have the wrong lead circuit for your float. Normally on the medium temp racks that...
  35. Replies
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    I think you should call IceOmatic tech support....

    I think you should call IceOmatic tech support. They have had some wiring issues with some of the 2014 ,2015 production units. It has something to do with the intermittent flash freezing of the...
  36. Replies
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    Since no oil traps maybe evaps are oil logged...

    Since no oil traps maybe evaps are oil logged ,low superheat.
  37. Replies
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    49 psi seems kind of high for R22. That's around...

    49 psi seems kind of high for R22. That's around 26 degree, plus you probably have a 2 psi drop, so is probably around 51 psi at the cooler. I would lower suction setpoint to around 42 especially if...
  38. Replies
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    19,716

    that product belongs in the SkyMall magazine.

    What is wrong with the flaring block?
    It has been working fine for the last 100 years.
  39. Replies
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    3,421

    I still use my 6-year old CPS VG200, never had...

    I still use my 6-year old CPS VG200, never had the need for a decimal point in the micron gauge, or a backlight or a temp display. And I know is calibrated to same specs for a wide temp range.
    never...
  40. Replies
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    Wright makes good tools. I have a 3/8 drive...

    Wright makes good tools. I have a 3/8 drive 6point SAE socket set, great quality.
  41. Replies
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    3,421

    The CEM also has the IFlex current clamp just...

    The CEM also has the IFlex current clamp just like fluke, so they could be the same.
    I would not be surprised if they are same actually. why spend the money on R&D when u can get a re badged one...
  42. Replies
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    Are Fluke Clampmeters rebadged chinese Cem ?

    http://www.cem-instruments.com/en/pro/pro-872.html

    http://en-us.fluke.com/products/clamp-meters/fluke-376-clamp-meter.html

    don't they look the same?
  43. Replies
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    1,452

    issue with fieldpiece Sc260

    anyone has problems with erratic readings when battery level drops from 3 bars to 2 bars?
    I have had this same issue now for 3 times where battery level is at 2 bars and the readings are allover...
  44. It's probably just sweating from walking too fast.

    It's probably just sweating from walking too fast.
  45. Replies
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    Amprobe 300 series measures inrush at 80ms, Fluke...

    Amprobe 300 series measures inrush at 80ms, Fluke 375, 376, at 100ms, Fieldpiece SC440 and 640 at 100ms.
    Copeland literature states that inrush current lasts 100-300ms.
    I don't think Amprobe will...
  46. bad float ?

    bad float ?
  47. Thank you .

    Thank you .
  48. Thank you. Dở you know If the TPI leak detectors...

    Thank you.
    Dở you know If the TPI leak detectors are made by Sensit, and what do you think of those leak detectors?
    Alsở I heard you were an engineer at Tif, did you have any input on the ZX 1,...
  49. Replies
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    remove the battery after each use

    it says so on the manual I think. otherwise it will discharge.
  50. Replies
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    make sure the injection solenoid valve is the...

    make sure the injection solenoid valve is the right one for that type of compressor. Copeland supplies different ones for different compressors. Are all the compressors running when this one goes...
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