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Type: Posts; User: toptech

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  1. Replies
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    i cut and pasted this from who seems like a smart...

    i cut and pasted this from who seems like a smart guy

    Guys, here's the issue from a VFD mfr's perspective.

    When you UL list a VFD, you are allowed to list it for TWO motor power ratings, based...
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    It always helps to RTFM TAG States rating @ 50C ...

    It always helps to RTFM
    TAG States rating @ 50C = 52.4amps
    Rating @ 40C = 74 amps
    Since this drive is installed in the return airstream it will work just fine.
    Thanks to all
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    Ya it does, i attached a pic of the Tag. im not...

    Ya it does, i attached a pic of the Tag.
    im not sure of this TR1 6027 you mentioned.
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    Man, i could see if i was installing a FORD, but...

    Man, i could see if i was installing a FORD, but this is a Cadillac unit. I just found out a tech came out to repair burnt wires at the motor about a month ago... i put an email into trane expressing...
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    14th digit specs the motor at 30HP in the IOM...

    14th digit specs the motor at 30HP in the IOM
    doesn't spec drive size, 17th digit specs VAV discharge temp control w/ VFD and Bypass
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    SFHLF75FPL00C8AD7D01ADC00000000RT0M8000

    SFHLF75FPL00C8AD7D01ADC00000000RT0M8000
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    Tr-150p18kt2e20h2

    Tr-150p18kt2e20h2
  8. Replies
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    [QUOTE=jayguy;19660711]are you going to need all...

    [QUOTE=jayguy;19660711]are you going to need all 30 hp? maybe you will only need 20 hp and all will be ok.[/QUOTE

    Not sure, ill have to assume the design engineers spec'd the 30 for a reason. I...
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    I'm going with factory mistake. This drive can do...

    I'm going with factory mistake. This drive can do no more that 52 amps
  10. Replies
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    Not set, its stamped rated output on the tag.

    Not set, its stamped rated output on the tag.
  11. Replies
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    Intellipak Concern

    merry christmas to all those who are inclined to spend like congress;0)

    I have a brand spanking new intellipak
    Model SFHLF75

    unit has a tr150 drive for the supply fan rated at 25HP 52.4 output...
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    55 DAT isn't gonna get it in an active OR. 50F is...

    55 DAT isn't gonna get it in an active OR. 50F is 100 times better, if you can get 47F your a rock star!
    problem with OR'S in my experience are the procedures and the equipment.
    in the rooms,...
  13. Thread: Work Pants

    by toptech
    Replies
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    6,113

    Waiting on my royalty checks;0)

    Waiting on my royalty checks;0)
  14. Replies
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    hmm, 3 f superheat proves you have good charge...

    hmm,
    3 f superheat proves you have good charge unless your evap fans are not operating
    compressor pump down tells me the pump is good
    Can we have proper superheat with low mass flow due to bad...
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    the pressure test imho is protection from joint...

    the pressure test imho is protection from joint failure when your not onsite. Its a controlled disaster test and ensures you bonded the pipe properly at your highest operating pressures. Added bonus...
  16. Thread: Anyone else?

    by toptech
    Replies
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    679

    here are some photos header is original coil...

    here are some photos
    header is original coil leak
    next 2 pics are of failed replacement coil.
    Carrier actually put out a mandatory rework adding clamps to the discharge lines on this model. i did...
  17. seems that unit only has an anti recycle timer....

    seems that unit only has an anti recycle timer. but thats for a AUZA and AUDA units
  18. model number seems funky, dont see a Q

    model number seems funky, dont see a Q
  19. Replies
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    if your cups are filled and ya pull a 300 micron...

    if your cups are filled and ya pull a 300 micron vac your good to go.
    That said, r410A is pretty wicked when the pipes come apart at 400 psig.
    we all purge nitro when brazing so spend the extra ...
  20. Thread: Anyone else?

    by toptech
    Replies
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    679

    2010 38 APD030 2nd coil failure and labor...

    2010 38 APD030

    2nd coil failure and labor allowance is a joke!!!
  21. Thread: Anyone else?

    by toptech
    Replies
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    679

    Anyone else?

    Loosing their arse with carrier Micro channel coil failures?
    Garbage
  22. Replies
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    Well I have not tried that. I fairly certain...

    Well I have not tried that.
    I fairly certain the compressor starts fully loaded so I did not suspect the unloader was causing the problem. If I'm wrong on that let me know
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    Nope, this is a 2014 unit and the brackets are...

    Nope, this is a 2014 unit and the brackets are installed. However I did the same job in 2010 on another building at the same location. I'll have install these on that one
    Thank you
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    Thanks I'm gonna check my email now

    Thanks I'm gonna check my email now
  25. Replies
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    801

    Typical rubber foot thru feet of compressors with...

    Typical rubber foot thru feet of compressors with sleeve and bolt.
    Unit has 2 compressors. Second stage starts normal
  26. Replies
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    New Carrier violent compressor starts

    Happy Dads day to all.
    Carrier 38APD030, brand new install with new AHU.
    1st stage digital scroll on start up snaps or torques wickedly on each start. Its like severe water hammer and the...
  27. Replies
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    Micro_Channel_coils and the proper TXV

    Carrier and Trane have published that permanent bleed T.E.V.'s must be install when using their Condensor's with micro channel coils. Trane specs 30% bleed, Carrier specs 5% bleed.
    I have a york...
  28. Thread: Superheat

    by toptech
    Replies
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    316

    If your measuring compressor superheat copeland...

    If your measuring compressor superheat copeland would be very happy with that number.
    If your evap is running 21f superheat your DA temp is probably high.
    need more info, pressures temps insulated...
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    • "Bleed port valves are used on RAUJ MCHE...

    • "Bleed port valves are used on RAUJ MCHE systems with fin tube DX evaporators. They have
    an internal port that shunts the refrigerant around the modulating portion of the valve."
    That came from...
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    Thanks dawg:)

    Thanks dawg:)
  31. Replies
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    Great question, this system has not been started...

    Great question, this system has not been started yet. All new equipment. Line sizing, distributors all sized properly.
    Control strategy is 4 stages based on supply air temperature.
    Again this...
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    Trane Application guide

    If anyone could share
    SS AGP-012-EN
    thank ya very much..
  33. Replies
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    Preventive TV sizing

    I've got a real head scratcher here.
    It's one of those " I understand the logic but completely don't understand your logic" type of head scratches.
    Air conditioning application
    R410a
    Split...
  34. Thread: WSHP DP switch

    by toptech
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    wow thats low DELTA-PRO PRESSURE SW. 1-10PSI is...

    wow thats low
    DELTA-PRO PRESSURE SW. 1-10PSI is all i buy. that boundle your working has a spec for pressure drop. you should be able throttle flow to achieve a 2-5 PD and use the swich you have....
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    Yaskawa for me support is great free software...

    Yaskawa for me
    support is great
    free software avail online to commision any of there drives with no special cables required:)
  36. Replies
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    wow

    wow
  37. Replies
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    Looking At suva's velocity chart for 404a we came...

    Looking At suva's velocity chart for 404a we came up with 3/4" for that riser, thank for your link:)
  38. Replies
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    Thank you Twoholing:cheers:

    Thank you Twoholing:cheers:
  39. Replies
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    642

    404a beer cooler @ 36F

    404a
    beer cooler @ 36F
  40. Replies
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    642

    suction line piping

    good evening
    Ive attached a sketch of an installation i have to do Saturday.
    single trap at evap do the job? This is the only route i have.
    Thoughts would be appreciated
    Thank you
  41. Replies
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    i love this board. Klove sloved my issue before i...

    i love this board. Klove sloved my issue before i even asked!! thanks
  42. Thread: 9mm or not?

    by toptech
    Replies
    4,843
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    359,018

    The the state of Illinois, ugh To read out loud...

    The the state of Illinois, ugh
    To read out loud that the state of Illinois does not allow it's citizens to use deadly force against criminals who try to do us harm is infuriating. My choice for...
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    have you purchased the recharable batts and...

    have you purchased the recharable batts and charger?
    do they hold up?
  44. Replies
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    ISCEON MO99 compressor approval The Copeland...

    ISCEON MO99 compressor approval
    The Copeland Brand Product team has approved ISCEON
    MO99 for use in Supermarket applications using Discus
    Brand compressors
    See 93-11 document located at...
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    Ive seen the reznor set up fairly simple and...

    Ive seen the reznor set up
    fairly simple and they use an FX controller for all unit operation.
  46. Replies
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    Copeland states it voids their compressor...

    Copeland states it voids their compressor warranties. united refrigeration has literature they hand out regarding this subject.
    i did not know it had a 10F glide, thats a deal breaker for me.
  47. Replies
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    I have interpted the 20 superheat as a guide line...

    I have interpted the 20 superheat as a guide line to keep you out of trouble.
    It would be very difficult to maintain no lower than 20 on a fixed orifice close coupled residential split system. IMHO...
  48. Thread: TXV problem

    by toptech
    Replies
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    1,396

    Think of it as the "cartridge" on a sporlan...

    Think of it as the "cartridge" on a sporlan valve.
    Each cage has a tonnage rating for a universal valve body.
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    Reznor RDDA-3. Circuit board failures

    Rdda-346-h700
    3bfk134zk13n788c
    Have a customer who asked why the He keeps burning up the same resistor on mulitple circuit board. Said it 1 stage heating fails and its always a melted resistor....
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    I did a little institutional kitchen work All...

    I did a little institutional kitchen work
    All the ovens had nice stainless tanks that produce the steam for cooking
    The thought of process or comfort steam piping proving the steam to cook is...
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