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  1. Replies
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    I guess what I am saying, before you try to get...

    I guess what I am saying, before you try to get the DS to properly control the humidity in any mode, DO YOU HAVE A PROPER vapor barrier??

    Read ICOM manual, 3.7.2 of the Humidity Sensor Reading...
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    It doesn't matter where and what the DH ' styles...

    It doesn't matter where and what the DH ' styles ' are selected - crappy vapor barrier, nothing can catch up.

    I can't answer why the DH goes off at the 60 range, but what tells me a lot is the...
  3. Replies
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    Techie: A bit sparse on info, but the humidity...

    Techie:

    A bit sparse on info, but the humidity problems I see usually stem from poor to no vapor barrier.

    The only true Data Centre I worked in was double vapor barrier(ed ), air lock double...
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    Looks normal to me - ' seamed ' pipe will split...

    Looks normal to me - ' seamed ' pipe will split like that - -

    Do what HVAC_Marc says - call it a day.

    Freonguy
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    RITTAL ' Toptherm ' A/C issues

    Greetings:

    We have a RITTAL TOPTHERM spot cooler ( M/N # SK3384500 )air cooled A/C that was installed about a year ago.
    It replaced a similar unit that was over 12 years old - I was not involved...
  6. Like Doublebogey said - recover it into a tank...

    Like Doublebogey said - recover it into a tank with some integrity - a butt joint, soft solder assembly on the side of a can is asking for trouble.

    I have silver soldered the copper ' saddle '...
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    LU91tech: Yes, this is a new version compared...

    LU91tech:

    Yes, this is a new version compared to 2 others I commissioned less than 6 months ago - - -

    Freonguy CM
  8. Replies
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    Push It : Yeah, it throws a guy for a loop,...

    Push It :

    Yeah, it throws a guy for a loop, especially when you have worked on so many that were all the same ( in the pump down regard ).

    After a long and hot installation, one system has no...
  9. Replies
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    Gentle(persons): Just got off the phone with...

    Gentle(persons):

    Just got off the phone with Liebert - Tech Support.

    Seems as though the ' pump down ' mode has been disabled for about a year or so, scrolls or Carlyle - I suppose they should...
  10. Replies
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    Six: As noted, AFTER 20 minutes of running, it...

    Six:
    As noted, AFTER 20 minutes of running, it still dumps the compressor immediately on shutting off the control OFF / ON @ the iCOM touch pad.
    I have worked on / commissioned well over 200...
  11. Replies
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    Liebert Start up question(s)

    Greetings:

    Just a brain picking exercise - ( I have been working on Lieberts for nearly 30 years - iCOM trained , couple of AM/AG training sessions etc. )

    Just comissioning a VS053WUA000266A...
  12. Replies
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    2,618

    [QUOTE=SuperStar79;4402902]Im guessing the...

    [QUOTE=SuperStar79;4402902]Im guessing the compressor blew a gasket.

    SS79:
    I 'll send you 5 bucks if the compressor really blew a gasket. Just doesn't happen.
    Chillerwhisperer makes a good point...
  13. Replies
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    [QUOTE=Tech Rob;14036911]Wow! Not many of them...

    [QUOTE=Tech Rob;14036911]Wow! Not many of them around! I think I have seen one or two in my travels. Oldest one I take care of at the moment is a 1991 model with the Level 10 controls. I upgraded...
  14. Replies
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    2,924

    ZW17: I have a few 1989/1990 vintage units here...

    ZW17:
    I have a few 1989/1990 vintage units here and they all have the ' 00 ' board which is the version just after what you have - I have worked on units like the one you listed, but I am inclined...
  15. Replies
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    1,906

    Heater issue

    Glennhvac:

    Without getting in to it, what a bout a spring wound timer ( 15 minute version ).

    It could be used to energize the CC, as it is rated for 230v, and you may even find one that handles...
  16. Replies
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    MO99

    Thanks Toptech!!

    FreonguyCM
  17. Replies
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    R-438a - opinions

    Thanks for the feedback so far gentlemen ( women ) - this Forum is a wealth of knowledge if we all share.

    Freonguy CM
  18. Replies
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    R-438a - retrofit

    Boilerman:

    We are located on the West Coast where it never gets really warm - yes, I was aware that the capacity drop was in the 5% range, but, in my situation, most of the equipment in the Mill...
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    Toptech: Do you have the Copeland bulletin of...

    Toptech:

    Do you have the Copeland bulletin of which you refer to? Or it's number?

    We have used it in 7 systems so far at the Mill I work at, with good results. All A/C systems - Six Lieberts...
  20. Replies
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    H2S ATTACKS!!

    Genduct:

    Yes, the copper gets attacked - but to a lesser degree.

    First off, copper and brass components turn black - a thick, scaly oxide forms, especially on suction lines where there is...
  21. Replies
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    Holey joints !

    JSWIN:

    I am at a Pulp and Paper Mill - all coils are Heresite coated, and, unfortunately all equipment comes with Silfos joints. THe H2S is the culprit to be sure - I suggest using Easy Flo 45 as...
  22. Refrigeration / HVAC Work

    Danny:

    What exactly do you do now? I have been in the trade for over 30 years in Western Canada and cannot imagine doing it without doing gas work.

    Do you have a gas ticket?

    PM me if you...
  23. Replies
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    ****

    Sorry, my bad - will get the proper designation -

    Freonguy
  24. Replies
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    Potsibilities

    I work at a Pulp and Paper Mill - we use activated carbon ( Westvaco ) units to neutralize chemicals.

    I was once talking to a somewhat unsavoury chap - when he found out I worked at a P & P Mill,...
  25. Thread: O2 Leak

    by freonguy
    Replies
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    634

    Leak look out

    HVACkid:

    What about ultra sonic? The ones sold by the HVAC wholesalers are fair at best; I am at a Pulp and Paper Mill where the instrumentation guys have a $2300.00 unit that is unbelievable -...
  26. Carlyle info

    Thanks, and a good thread !!


    Freonguy
  27. Vexing valve plates

    Mr.Kev -

    Agreed on the Bible - I have one to be sure.

    Do you have a link for the rebuild manual? I have one, but it got badly water damaged and some of it is illegible.

    As for the valve...
  28. Replies
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    Tar Trouble

    Yes, WD-40 works pretty well; laquer thinner works better, however, it is more toxic.
    I too use never seize on the shafts - makes doing it the next time a nicer experience.

    Freonguy
  29. Replies
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    Oil pressure annoyance

    Captain 123

    Sounds like you may have it - what I was going to throw in the ring was to reverse the direction of the compressor - I have, over the years , seen a few cases where the oil pump won't...
  30. Replies
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    Vacuum Pump

    Pascone makes a good point - I have a Ritchie # 93560 @ 6CFM - really like it.

    Use a good vacuum gauge, and above all - CHANGE THE OIL REALLY OFTEN - the pump lasts, and gives good performance.
    ...
  31. Replies
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    Fluke info

    Tassajara:

    That should be enough - - -

    I will look at the differences between the II and III - but what is there will likely suffice.

    Thanks for the help!!

    Freonguy
  32. Replies
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    Fluke 79 series III DMM info

    Greetings:

    My apprentice picked up a nice used Fluke 79, series III DMM, without a manual.

    Fluke.com does not list info that I can seem to get ahold of; does anyone have a pdf of a manual for...
  33. Replies
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    R-22 replacements

    All my units here at work ( except new stuff in the last year + ) are R-22 - Air Conditioning application. That is 150 A/C s and a 134a 125 ton Carrier screw chiller.

    I am just about sold on MO-99...
  34. Replies
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    Control the chaos

    +1 on what Flange says - - - -

    '' How do you eat an elephant ?? One bite at a time. '' Remeber that when tackling this one - think out carefully each thing you are about to do - there will be a...
  35. Replies
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    Propane problems

    Regulators are rated in BTUs - you have to have a regulator that will pass in excess of the 1.6 million you require.

    If the size of the tank(s) is not large enough ( surface area ) @ a certain...
  36. Replies
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    Propane put off

    HVAC 1966:

    Low ambient, line size too small, reg. locking up, iced up tanks, not large enough tank(s) ( surface area too small for load and vaporization rate ), new system ( has it worked in past...
  37. Thread: R-500 options

    by freonguy
    Replies
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    1,300

    Ongoing R-500 saga

    Thanks Icemeister - gets the mind working again!!

    I installed the R-22 TXV and pulled a vacuum on the thing - the old TXV was internally equalized, and the suction line is literally 12 '' long -...
  38. Thread: R-500 options

    by freonguy
    Replies
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    1,300

    R-500 conundrum

    Thanks for the replies -

    No R-500 to be easily found here; what I am in the process of doing is:

    1) Found leak on hi side schrader - easy fix

    2) Unit has a JRR4-0100 compressor ( hi-temp....
  39. Replies
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    Sensor snafu

    Stebs:

    Good advice from Flange and Mikey - forgot to mention; if you run remote sensor(s) make sure they are a seperate pair of wires ( not in the same bundle as the rest ) - When I was FTC for...
  40. Thread: R-500 options

    by freonguy
    Replies
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    1,300

    R-500 options

    Wellllll, in 32 years in the trade, I have seen three R-500 ( Carene 7 ) jobs; a couple 20 ton Carrier DX splits, a Carrier Transport reefer, and, today at work, a 3/4 ton, custom built up system...
  41. Replies
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    Thermostat questions

    Steb:

    IMHO, go to the Honeywell Vision Pro 8000 series - great bang for the buck, it will do everything you need it to, including narrowing the temperature settings to a real level if you so wish...
  42. Thread: Phosgene Gas

    by freonguy
    Replies
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    26,783

    Phosgene exposure

    HVACDougie:

    From my experience, you will feel ' heavy chested ' for 24 hours or so, and the symptoms will go away.
    If you have trouble catching your breath, coughing up, shortness of breath,...
  43. Replies
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    Es and EFFs

    LOL !!

    I rebuilt several of these years ago - there was a learning curve to be sure, but I probably did half a dozen.

    Best one was a 75 hp ( ?? ) on a water cooled chiller I rebuilt in place at...
  44. Replies
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    Freeze stat

    We had a large fibre optics plant that had a 750,000 btu DFMUA for the fibre storage room. They changed the air over several times per hour as the finished, coated fibre was in 1 km lengths on...
  45. Replies
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    CRACKS

    Are you sure your safety glasses / camera don't have cracked lens' ?

    Check that temperature rise !!

    Freonguy
  46. 06D spring replacement

    Like was said, you have to be ingenious and just make it work - Blocking while re and re( ing ) the bolts is a safety essential.

    FWIW, the Carlyle part # for a spring kit c/w all the hardware is...
  47. Replies
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    Cap tube info

    Thanks a million - will double check with TRUE.

    Freonguy
  48. Replies
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    1,175

    TRUE GDM-26 cap. tube size

    Greetings:

    I usually hang around the Commercial HVAC forum: That being said, I have been given this job to look at.

    TRUE reach in, R-134a, AE4440Y compressor - plugged cap tube.

    I can cross...
  49. Replies
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    XXXL liquid line line

    Warlock:

    Is this one of the old Lennox units that used a roll of 1/4 '' for the liquid line / metering device?

    Some of us old timers remember these - but they were usually on the old horizontal...
  50. Replies
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    Display dilemna

    GITMO:

    According to your last numbers, you have 66 degrees superheat and over 30 degrees subcooling.

    Early on you said you have 7 degrees superheat - where?

    How do you come up with ' The...
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