Page 3 of 4 FirstFirst 1234 LastLast
Results 41 to 60 of 62

Thread: FIGURE OUT the Microns

  1. #41
    Join Date
    Jul 2019
    Location
    Oklahoma home its in the name
    Posts
    7,642
    Post Likes
    Quote Originally Posted by AC Hacker View Post
    Did this when I first bought it, pulled to 500 and have only used it 7 times since.
    So how many times have you changed the oil?

    Sent from the Okie state usin Tapatalk

  2. #42
    Join Date
    Jul 2019
    Location
    Oklahoma home its in the name
    Posts
    7,642
    Post Likes
    Quote Originally Posted by AC Hacker View Post
    yes , it still had a minute of pressure.
    But is there a low pressure switch? If not the low side could easily be running in a vacuum.

    Sent from the Okie state usin Tapatalk

  3. #43
    Join Date
    May 2021
    Posts
    24
    Post Likes
    Thread Starter
    Quote Originally Posted by R600a View Post
    So how many times have you changed the oil?

    Sent from the Okie state usin Tapatalk
    every job once before I start

  4. #44
    Join Date
    May 2021
    Posts
    24
    Post Likes
    Thread Starter
    Quote Originally Posted by R600a View Post
    But is there a low pressure switch? If not the low side could easily be running in a vacuum.

    Sent from the Okie state usin Tapatalk
    SO, the bad braze leak was on the high side at the condenser connection.

  5. #45
    Join Date
    Jul 2019
    Location
    Oklahoma home its in the name
    Posts
    7,642
    Post Likes
    Quote Originally Posted by AC Hacker View Post
    every job once before I start
    That should about do it but I would suggest switching to changing it when you finish because that used oil contains moisture and possibly acid that will attack the valves and make the pump loose performance over time. Also the hot oil drains much quicker.

    Sent from the Okie state usin Tapatalk

  6. #46
    Join Date
    Jul 2019
    Location
    Oklahoma home its in the name
    Posts
    7,642
    Post Likes
    Quote Originally Posted by AC Hacker View Post
    SO, the bad braze leak was on the high side at the condenser connection.
    Then you should be fine.

    Sent from the Okie state usin Tapatalk

  7. #47
    Join Date
    May 2021
    Posts
    24
    Post Likes
    Thread Starter
    Quote Originally Posted by R600a View Post
    OP I thought I should let you know to expect some ribbing over your screen name because usually when we refer to a hack we are referring to someone who installs things incorrectly or does sloppy work

    Sent from the Okie state usin Tapatalk
    Im very modest and do believe I can change the screen name when I prove to myself That I wont hack it all up to s**t.
    Hence, the bad braze work.

  8. #48
    Join Date
    Jul 2019
    Location
    Oklahoma home its in the name
    Posts
    7,642
    Post Likes
    Quote Originally Posted by AC Hacker View Post
    Im very modest and do believe I can change the screen name when I prove to myself That I wont hack it all up to s**t.
    Hence, the bad braze work.
    Its all in fun. I would keep it. I have had a couple braze joints leak from when I started and was still trying to listen to my boss on how to braze. I learned pretty quick that he wasn't that great at it himself.

    Sent from the Okie state usin Tapatalk

  9. #49
    Join Date
    Sep 2002
    Posts
    29,940
    Post Likes
    There is no correlation between micron level and moisture volume.

    It's more akin to a saturation pressure. You put gauges on a static system and if the pressure is at or above the pressure for the surrounding ambient - you know there is liquid refrigerant in the system - but you have no idea how much liquid refrigerant it is. Could be a pound or it could be a thousand pounds - the vapor pressure your gauge shows would be the same number in both cases.

    PHM
    --------


    Quote Originally Posted by AC Hacker View Post
    I am trying to grasp how much moisture is in the system so I can determine where I think its coming from either Materials or oil or water Basically so i can convince myself that its OK to stop pulling the vacuum.

    "When they say"... 1 micron is 25,400 of an inch in the water column is that a literate measurement
    of what is in the system??? ( no clue)

    Hypothetically, If I am pulling 1100 mics for days and I know that when I reach 1000 basically all moisture is gone, I would be safe to assume that 100 mics of moisture is in material, right?
    Sooo, how much is 100 mics of moisture 1 teaspoon, 1 spec of water/oil?
    PHM
    --------
    The conventional view serves to protect us from the painful job of Thinking

  10. Likes R600a liked this post.
  11. #50
    Join Date
    Sep 2002
    Posts
    29,940
    Post Likes
    This is bad practice in my opinion. You are changing the oil because of the possibility that is is bad. You do not want bad oil in your pump. Change the vacuum pump oil Before you put it away after each use and it will be stored with fresh oil in it - and it will be ready-to-go immediately next time.

    PHM
    ---------




    Quote Originally Posted by AC Hacker View Post
    every job once before I start
    PHM
    --------
    The conventional view serves to protect us from the painful job of Thinking

  12. Likes R600a liked this post.
  13. #51
    Join Date
    Mar 2018
    Location
    Virginia
    Posts
    2,242
    Post Likes

    FIGURE OUT the Microns

    Micron level is just the gauge sensing the density of molecules in the environment. That correlation would be difficult to know. Also the total number of molecules in the system would be related to the system volume and the assumption that they’re equally distributed. So no it’s not really something that can be estimated, but it’s also not something that’s very important to know. Just focus on micron level and that’s all you need.
    "I think Quantum tunneling would work great... "

    "Call a technician for God's sake. Or we'll see you on the news or the Dark Side of the Moon."

  14. #52
    Join Date
    Sep 2002
    Posts
    29,940
    Post Likes
    Where the hell is That mechanical room??? <g>

    PHM
    -------



    Quote Originally Posted by BadDaddy420 View Post
    . . .




    Sent from my remote link to R2D2 using Tapatalk
    PHM
    --------
    The conventional view serves to protect us from the painful job of Thinking

  15. Likes R600a liked this post.
  16. #53
    Join Date
    Oct 2011
    Location
    Harrisburg, NC
    Posts
    1,534
    Post Likes
    Quote Originally Posted by Poodle Head Mikey View Post
    Where the hell is That mechanical room??? <g>

    PHM
    -------
    Stock photo I found lol.


    Sent from my remote link to R2D2 using Tapatalk

    I can't fix it if it won't stay broke..

  17. Likes R600a liked this post.
  18. #54
    Join Date
    Aug 2002
    Location
    Southold, NY
    Posts
    32,912
    Post Likes
    Quote Originally Posted by BadDaddy420 View Post
    Stock photo I found lol.


    Sent from my remote link to R2D2 using Tapatalk
    Figures! We never get that much room and clean floors!

  19. Likes R600a, JayMan7 liked this post.
  20. #55
    Join Date
    Mar 2018
    Location
    Virginia
    Posts
    2,242
    Post Likes
    Quote Originally Posted by pecmsg View Post
    Figures! We never get that much room and clean floors!
    Hahaha I know every mechanical room I work in is closer to a dungeon than that room.
    "I think Quantum tunneling would work great... "

    "Call a technician for God's sake. Or we'll see you on the news or the Dark Side of the Moon."

  21. #56
    Join Date
    May 2014
    Location
    Bay Area California
    Posts
    30,707
    Post Likes
    Guess I'm doing it wrong.

    Name:  20160215_122336.jpg
Views: 68
Size:  987.0 KB

    Name:  20160215_122348.jpg
Views: 65
Size:  777.3 KB
    I do a triple evac with nitro to remove non condensables.

  22. #57
    Join Date
    Oct 2011
    Location
    Harrisburg, NC
    Posts
    1,534
    Post Likes
    Quote Originally Posted by BBeerme View Post
    Guess I'm doing it wrong.

    Name:  20160215_122336.jpg
Views: 68
Size:  987.0 KB

    Name:  20160215_122348.jpg
Views: 65
Size:  777.3 KB
    Love the floating vacuum pump look.

    Sent from my remote link to R2D2 using Tapatalk

    I can't fix it if it won't stay broke..

  23. Likes JayMan7, R600a, BBeerme liked this post.
  24. #58
    Join Date
    Jul 2019
    Location
    Oklahoma home its in the name
    Posts
    7,642
    Post Likes
    Quote Originally Posted by BadDaddy420 View Post
    Love the floating vacuum pump look.

    Sent from my remote link to R2D2 using Tapatalk
    Yes seriously I can't figure out how he's got it levitating there.

    Sent from the Okie state usin Tapatalk

  25. #59
    Join Date
    May 2014
    Location
    Bay Area California
    Posts
    30,707
    Post Likes
    It's a piece of channel welded to the frame to make a box. Probably used as a tie down for trucking down the highway.


    Quote Originally Posted by R600a View Post
    Yes seriously I can't figure out how he's got it levitating there.

    Sent from the Okie state usin Tapatalk
    I do a triple evac with nitro to remove non condensables.

  26. Likes R600a liked this post.
  27. #60
    Join Date
    May 2021
    Posts
    153
    Post Likes
    Outstanding when this chemical is misuses a wide variety of disasters, of course would take place simultaneously.

  28. Likes ksefan liked this post.
Page 3 of 4 FirstFirst 1234 LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •