Search:

Type: Posts; User: Tech Rob

Page 1 of 20 1 2 3 4

Search: Search took 0.06 seconds.

  1. Replies
    10
    Views
    358

    Unless you correct soft foot and have the...

    Unless you correct soft foot and have the equipment levelled, you'll never be able to any alignment on any piece of machinery 100% right. The best you can hope for is "close enough"
  2. Replies
    10
    Views
    358

    Those types of couplings with shaft extensions...

    Those types of couplings with shaft extensions are very forgiving of angular misalignment. This is why you have the shim packs in there, for flexibility. They are not as forgiving for parallel...
  3. Replies
    13
    Views
    1,139

    I've been there. Never miss an opportunity to...

    I've been there. Never miss an opportunity to grow your skills, experience, and knowledge.
  4. Replies
    7
    Views
    790

    You definitely have something screwed up with the...

    You definitely have something screwed up with the wiring. Either that, or you have a drive that is magic and you need to play the lottery. :grin2:
  5. Replies
    12
    Views
    1,156

    This thread is hilarious so far. :couch:

    This thread is hilarious so far. :couch:
  6. Replies
    138
    Views
    9,244

    Air is not being compressed any more by a...

    Air is not being compressed any more by a centrifugal fan of any type than water is being compressed by a centrifugal pump. In both systems, the fluid is being slung outwards by rotating vanes, and...
  7. Replies
    34
    Views
    3,533

    I could be wong, but I don't think the winding...

    I could be wong, but I don't think the winding insulation has any effect on shaft currents. If you're talking about insulated bearings, then that is something different, because then you are directly...
  8. Replies
    34
    Views
    3,533

    Yes, class F or better insulation on VFD rated...

    Yes, class F or better insulation on VFD rated motors. They need heavier insulation to be able to handle the voltage spikes resulting from inverter switching. I've measured as high as 573 volts on a...
  9. Replies
    34
    Views
    3,533

    I want to know how the insulation on the stator...

    I want to know how the insulation on the stator windings has any effect on the shaft currents generated by the VFD.
  10. Replies
    34
    Views
    3,533

    Output chokes have also proven to be an effective...

    Output chokes have also proven to be an effective way to manage shaft current.
  11. Figure out if you even want to do this kind of...

    Figure out if you even want to do this kind of work before you spend a bunch of money on tools.
  12. Replies
    34
    Views
    3,533

    Could you please explain to me how the insulation...

    Could you please explain to me how the insulation on the stator affects this?
  13. Replies
    34
    Views
    3,533

    Most bearing failures I see are due to VFD...

    Most bearing failures I see are due to VFD induced shaft current.
  14. Replies
    22
    Views
    2,421

    It is, but I had used it all up on the last job...

    It is, but I had used it all up on the last job and 1/4" is all I had.
  15. Replies
    22
    Views
    2,421

    Meant to say 1/4" copper

    Meant to say 1/4" copper
  16. Replies
    22
    Views
    2,421

    I have a salvaged coaxial tube in tube condenser...

    I have a salvaged coaxial tube in tube condenser in my truck that is for this purpose, only I haven't added the adapters to it yet. It's a little bit more heavy duty than my copper contraption, but...
  17. Replies
    22
    Views
    2,421

    I made my own about 8 years ago by wrapping a 50'...

    I made my own about 8 years ago by wrapping a 50' roll of 14" copper around a 40 cu. ft. nitrogen tank., brazing some supports to the sides to keep it all together, and added some flare fittings to...
  18. Replies
    25
    Views
    1,928

    Been to hundreds of local shows, tours featuring...

    Been to hundreds of local shows, tours featuring national & international bands, three & four day open air music festivals, and I love it. I always rejoice in discovering great new bands and revel in...
  19. Replies
    9
    Views
    1,651

    It's just air conditioning, not life or death....

    It's just air conditioning, not life or death. Why in the heck are we not just turning it off and locking it out?
  20. Replies
    17
    Views
    2,968

    You're welcome! Thanks, Nuc! Most of the...

    You're welcome!



    Thanks, Nuc! Most of the WOP posts are like new system installs or big chillers or whatever. I thought it would be cool to just share an ordinary repair job we take for...
  21. Replies
    17
    Views
    2,968

    Pull the plug off the bottom of the EEV, ohm out...

    Pull the plug off the bottom of the EEV, ohm out the pins, and compare to the other circuit?
  22. This is the same question I ask. What you...

    This is the same question I ask.



    What you have, is a relationship with your own consciousness.



    This is exactly what religion is. It fills the void of lack of understanding.
  23. Complicated is relative.

    Complicated is relative.
  24. Do you really think we are all that special or...

    Do you really think we are all that special or advanced? In the absence of a logical explanation, why do you say "it must be magic!". What is so hard about just admitting to yourself that you don't...
  25. How can Christians believe that God created all...

    How can Christians believe that God created all this crap in the universe just so he could have a "personal relationship" with any one of us?
  26. Are you serious??? There is a list for you right...

    Are you serious??? There is a list for you right there on the first page.
  27. That guy is a confirmed faker. Was never even in...

    That guy is a confirmed faker. Was never even in the military.
  28. Someone who completes a course taught by an...

    Someone who completes a course taught by an ex-SEAL could say they were "SEAL-trained", and not be lying. :grin2:

    Sheep-dipping (process of getting a new identity and records sealed/destroyed) is...
  29. Replies
    17
    Views
    2,968

    I'll be back. To answer Dixie's question, the...

    I'll be back.

    To answer Dixie's question, the EXV was made obsolete on certain units, and their replacement is a TXV with a pumpdown solenoid. Superior design, IMO. Some of these units you come...
  30. Post #8 in this thread.

    Post #8 in this thread.
  31. Don't play games. This is what was said. Is there...

    Don't play games. This is what was said. Is there another way to interpret this? Perhaps you'd like to clarify what you meant here?
  32. Why do you act like the forum belongs to...

    Why do you act like the forum belongs to christians by default and everyone who disagrees is a "troll"? Maybe you're the troll?

    Why will no one answer the questions I've asked? This place is like...
  33. Muslims have always been bloodthirsty insane...

    Muslims have always been bloodthirsty insane murderers. Just ask the Sikhs

    https://en.m.wikipedia.org/wiki/Sikh_holocaust_of_1746#Origins_of_the_1746_Ghall.C5.ABgh.C4.81r.C4.81
  34. Replies
    17
    Views
    2,968

    Thank you!

    Thank you!
  35. Thread: NO Ceilings

    by Tech Rob
    Replies
    6
    Views
    664

    The person writing the check for our services.

    The person writing the check for our services.
  36. Religion is the ruse.

    Religion is the ruse.
  37. The more I think about it, God starts to have...

    The more I think about it, God starts to have many human characteristics. Christians believe we are created in his image. I believe we created him in our image.
  38. What is the plan for humanity, planet earth, the...

    What is the plan for humanity, planet earth, the universe?

    If God needs us to fulfill his plan, he is not all powerful, because he could choose to simply will his plan into being.

    Why does God...
  39. Replies
    17
    Views
    2,968

    http://i1179.photobucket.com/albums/x400/robmat813...

    http://i1179.photobucket.com/albums/x400/robmat813/Deer%20Park%20ES/1028141038a_zpsiwntkhyh.jpg
    http://i1179.photobucket.com/albums/x400/robmat813/Deer%20Park%20ES/1028141038b_zpslagceoh2.jpg...
  40. Replies
    17
    Views
    2,968

    York YCAL Air Cooled Chiller Repairs

    So, I came across these two neglected YCALs last year and they had a whole host of problems

    Two bad compressors. Both circuits on one chiller got oil changes also.
    Suction temp. sensor reading...
  41. Replies
    4
    Views
    1,000

    Offset x Width / Length

    Offset x Width / Length
  42. Thread: Average wage

    by Tech Rob
    Replies
    132
    Views
    30,810

    I don't think it should be this way. It...

    I don't think it should be this way. It encourages dishonesty. I think you missed the point of what I was saying. What I was saying was that when you have lived and worked in an area long enough, you...
  43. Replies
    25
    Views
    1,146

    And every time the media talks about refugees and...

    And every time the media talks about refugees and immigrants, they act is if it's some heroic thing they're doing... Going out into the world... better life for their family... blah blah blah... what...
  44. Replies
    25
    Views
    1,146

    http://i1179.photobucket.com/albums/x400/robmat813...

    http://i1179.photobucket.com/albums/x400/robmat813/ted%20cruz%20born%20near%20the%20usa_zpsqhwhvlyl.jpg
  45. Replies
    25
    Views
    1,146

    I think the tide will turn on Trump if he...

    I think the tide will turn on Trump if he continues to put his nonsensical opinions on non-issues like vaccines/autism on the record, and continues to let mouth-breathing doomsday prepper ham radio...
  46. Replies
    138
    Views
    9,244

    Great post, thank you.

    Great post, thank you.
  47. Replies
    25
    Views
    1,146

    I just wish we could keep all of the religious...

    I just wish we could keep all of the religious stuff out of politics, it clouds the real issues with sanctimonious appeals to peoples' emotions. It seems like elections are won by whoever says God...
  48. Replies
    25
    Views
    1,146

    I like Huckabee sometimes, until he starts...

    I like Huckabee sometimes, until he starts getting into all of his opinions on his made up illusory "war on christianity". "You won't let me force you to live according to my beliefs, so you're...
  49. If there are no leaks/moisture and the system...

    If there are no leaks/moisture and the system passes a standing vacuum test, don't worry about that little bit of air that gets in when you disconnect your vacuum gauge. You can do like timebuilder...
  50. Replies
    7
    Views
    588

    Splitter dampers, fire dampers, and internal duct...

    Splitter dampers, fire dampers, and internal duct lining are what I've found in the past. Sounds like you need to start popping ceiling tiles and drilling holes to stick your manometer into.
Results 1 to 50 of 1000
Page 1 of 20 1 2 3 4

Related Forums

Plumbing Talks | Contractor MagazineThe place where Electrical professionals meet.
Comfortech 365