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  1. #14
    Join Date
    Jan 2013
    Location
    Wisconsin
    Posts
    23
    And I agree with Tommy Knocker

  2. #15
    Join Date
    Oct 2009
    Location
    Raleigh, NC
    Posts
    799
    A standard 5-foot gauge hose will hold about 0.4-0.5oz of liquid 134A. I would fill up a hose (by purging with liquid) three times and use a ball valve to place into system.

  3. #16
    Join Date
    Jun 2003
    Location
    Tampa Bay, FL.
    Posts
    120
    Quote Originally Posted by keepinitcool View Post
    Ummmm........use a charging cylinder for R134A. They come with directions and are made for critically charging in small amounts of refrigerant. Done.
    That would be the correct way to do it, but where's the fun in that? :-)

  4. #17
    Join Date
    Sep 2009
    Location
    S.C.
    Posts
    1,412
    You interested in my way?

    OVER CHARGE IT. Yep. I honestly don't Care what or how, other than being lucky and having a special built rig it's Not Possible to charge such a small about of gas. Over charge it, tape your temperature sensor to a place on the evaporator and start'er up. Adjust your charge to get a good temp on your evaporator and let it go. I've fought these small systems for years. I'll connect to the Low side and check the compressor, pull a good vacuum and hit it with the charge.

    If you have a fast response sensor, you'll be able to see exactly what's going on as you "drop" some charge. Too much charge and the evaporator is going to be warm (40-50ish degrees, flooded) you'll be amazed how little you carefully remove to bring the evaporator temp down. On Marine refrigerators I normally go down to 10 degrees. They'll freeze beer in the bottom with the 'stat turned all the way down.
    Yes, I know I Shouldn't But I Just Can't Help Myself...

  5. #18
    Join Date
    Mar 2002
    Location
    fort walton beach fl.
    Posts
    790
    Hook up your low side gauge to the process tube. Weight in the charge with electronic scale. Disconnect the evap fan and let the compressor pull the low side in a vacuum and sucking out the hose as well. Use a pitch off tool to pinch the process tube. Done.
    http://acfwb.com/

    "The best preparation for good work tomorrow is to do good work today"

  6. #19
    Join Date
    Jul 2000
    Location
    Guayaquil EC
    Posts
    10,460
    If you consider that a standard 1/4" service hose will hold .33 oz/ft of liquid R134A, it would be rather simple to make a simple "dial-a-charge" device just using a hose. A 5 foot hose filled with liquid R134A would hold about 1.65 oz.

  7. #20
    Join Date
    Jul 2002
    Location
    Texas
    Posts
    276
    The liguid filled 5 foot hose will work. Need a hand valve or 2, but I have used this method more than once.
    Recycle Life. Donate Blood.

  8. #21
    Join Date
    Dec 2008
    Location
    NW Iowa
    Posts
    125
    Quote Originally Posted by hydra View Post
    Sounds like you have a restriction instead of a leak.
    Plugged cap tube for sure!

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